{"Bibliographic":{
"Title":"Southwest Fisheries Center Monthly Report: July-August 1989",
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"Publication date":"1989",
"Publisher":"Southwest Fisheries Center (U.S.)"
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"Language":"English",
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    "content": "Bugge\nOM\nMERCE\nUNITED\nERICA\nSTATES OF A\nSouthwest FISHERIES CENTER\nHONOLULU LA JOLLA MONTEREY\nTIBURON\nREPORT OF ACTIVITIES\nJuly-August 1989\nANTARCTIC ECOSYSTEM RESEARCH GROUP\nPage\nMeeting Held of the Working Group for the CCAMLR Ecosystem Monitoring Program 1\nCOASTAL FISHERIES RESOURCES DIVISION Cruise Planned to Evaluate Use of ROV for Biomass Estimation ........................ 4\nFISHERY-MARINE MAMMAL INTERACTIONS DIVISION\nStudies Are Under Way on Effects of Seal Bombs\n5\nHONOLULU LABORATORY\nHead Start Project Releases Female Monk Seal Pups ....... . 10\nPACIFIC FISHERIES ENVIRONMENTAL GROUP\nResults Show Long-Term Decline in Albacore Catch Rates 14\nPELAGIC FISHERIES RESOURCES DIVISION Summary of 1988 North and South Pacific Albacore Data .................... 15\nTIBURON LABORATORY\nOccurrences of First-Year Juvenile Rockfishes in Nearshore Habitats Indicate Weak Recruitment in 1989 .15\nINFORMATION TECHNOLOGY SERVICES\nInspector General Reviews Information Technology 1995 Project 18\nPUBLICATIONS .................. 18\nPHERIC\nNATIONAL OCEAN\nNOAA\nISTRATION\nU.S. DEPARTM\nSOUTHWEST FISHERIES CENTER\nCENTER ADMINISTRATION- La Jolla, California\nScience and Research Director, SWR\nIzadore Barrett\nDeputy Director.\nRichard A. Neal\nPlanning Officer\nDavid J. Mackett\nInformation Technology Services\nDorothy Roll\nExecutive Officer\nBenjamin F. Remington\nLABORATORIES & DIVISIONS\nAntarctic Ecosystem Research Group, Chief ...... Rennie Holt\nLa Jolla, California\nCoastal Fisheries Resources Division, Chief ......... John R. Hunter\nLa Jolla, California\nFishery-Marine Mammal Interactions Division, Chief ......... Douglas P. DeMaster\nLa Jolla, California\nHonolulu Laboratory, Director George W. Boehlert\nHonolulu, Hawaii\nPelagic Fisheries Resources Division, Chief La Jolla, California\nGary T. Sakagawa\nPacific Fisheries Environmental Group, Chief Monterey, California\nAndrew Bakun\nTiburon Laboratory, Director\n...... Alec D. MacCall, Acting\nTiburon, California\nThe Report of Activities of the Southwest Fisheries Center is compiled at La Jolla from material submitted by the Center's staff. To change the delivery address of the Report of Activities, or to cancel your subscription, please notify Lorraine C. Prescott , at P.O. Box 271, La Jolla, CA 92038. Telephone: (619) 546-7063.\nANTARCTIC ECOSYSTEM RESEARCH GROUP\nLa Jolla, California\nReview of Antarctic Ecosystem Research Plan Completed\nOn July 11, 1989, the Advisory Panel to the Antarctic Ecosystem Research Group (AERG) was convened to provide advice to the Center Director concerning the direction of research to be completed by the U.S. Antarctic Marine Living Resources (AMLR) Program. The meeting was held at the U.S. State Department in Washington, DC. Members of the Panel included repre- sentatives of the State Department, Marine Mam- mal Commission, Environmental Defense Fund, National Science Foundation, and NOAA Fisheries Headquarters.\nDr. Rennie Holt, AERG Chief, summarized the criteria that were provided by the Panel and used to evaluate three alternative research strategies. All members felt that the proposed research should consider the likely budget level. In addi- tion, they expressed concern that there is insuffi- cient time between the beginning of the fiscal year (October 1) when funding becomes available and the beginning of the field season in late November to complete contracts and obtain equipment and supplies. They suggested that funding should be provided one year in advance.\nThe members also felt that the research should meet research priorities set by the Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR). Research should also be done without duplicating research efforts of other nations and other U.S. research efforts. Finally, tasks for which the U.S. is uniquely qualified (e.g., collection of satellite imagery data) should be given priority.\nThe Panel reviewed a strategic planning docu- ment which presented three research alternatives plus basic \"core\" research which must be under- taken in conjunction with either of the three alter- natives. The proposed research plan was designed to support CCAMLR priorities which include active participation in the Fish Stock As-\nsessment, Ecosystem Monitoring, and Krill Work- ing Groups. AMLR field research activities will focus on the Antarctic Peninsula which has been designated by CCAMLR as an area for con- centrated integrated studies. This area is impor- tant to commercial fisheries, is home to a high abundance of protected species, and offers the advantage of complementing other national and U.S. marine research efforts.\nBased upon recommendations of the Advisory Panel, the AMLR research will consist of offshore sampling of prey and environmental conditions, coupled with land-based studies of predators during the austral summer to investigate factors influencing the reproduction, growth, survival, abundance, and distribution of key biotic com- ponents of the marine ecosystem. The research will be conducted in the vicinity of Elephant Is- land, South Shetland Islands. It will examine both intra- and inter-annual natural variability on a long-term basis to assess the potential impact of human activities. A 10-year time series of meas- urements is crucial to understanding the nature of this variability.\nSpecific research tasks will include systematic ship surveys and monitoring at coupled offshore and land-based sites, development of reliable sur- vey methods for interpreting the results of monitoring activities, investigation of methods to better determine krill abundance and distribution, determining spatial and temporal scales of krill aggregations, and analyzing remote sensing data obtained via satellite to investigate broad patterns in environmental conditions within the study area during both the austral summer sampling period and winter season in conjunction with satellite monitoring of crabeater seals.\nBased upon this plan, a preliminary cruise an- nouncement and a solicitation of proposals were distributed in July 1989. The deadline for receiv- ing the proposals was September 15, 1989. A finalized research plan will then be completed. (R. Holt, FTS 893-7601)\nMeeting Held of the Working Group for the CCAMLR Ecosystem Monitoring Program\nThe fourth meeting of the Working Group for the CCAMLR Ecosystem Monitoring Program\n1\n(CEMP) was held August 23-30 in Mar Del Plata, Argentina. The U.S. delegation consisted of Drs. Rennie Holt, John Bengtson of the National Marine Mammal Laboratory, and Polly Penhale of the National Science Foundation. Other national delegations were from Argentina, Australia, Brazil, Chile, India, and the United Kingdom.\nMajor agenda items considered included 1) evaluation of agreed predator monitoring parameters, 2) progress and achievements of directed research on predators, 3) prey monitor- ing, and 4) specification of environmental data. The group considered 24 working papers address- ing these items.\nThe Group conducted an extensive review of research, being or proposed to be, conducted at CEMP selected monitoring sites. A document was reviewed which provided comments from the Scientific Committee on Antarctic Research (SCAR) Bird Biology Sub-Committee concerning the research at the CEMP sites. Several modifica- tions, including additions and deletions of directed research on specific species, were made based on the SCAR report.\nThe standard methods for monitoring parameters of predatory species were reviewed. Based on members' experiences in using the in- structions and results from sensitivity analyses, major revision and reorganization were recom- mended for most standard methods. The draft forms for recording field data and reporting sum- mary data were then reviewed. In many cases, revisions were completed to accommodate chan- ges in the standard methods.\nThe collection of environmental data required to monitor predator and prey species was inves- tigated. The information required to collect en- vironmental data was divided into two categories, environmental features that have a direct in- fluence on predators and environmental condi- tions that have an indirect effect through their impact on the prey. Features that have a direct influence on predators (e.g., sea ice, local weather) should be the emphasis at land-based monitoring sites. The Group decided that features that have an indirect effect on predators (e.g., water circulation, productivity) should be con- sidered in association with the distribution and\nabundance of prey and should be addressed by the CCAMLR Working Group on Krill. The Group noted that remote sensing using satellites should play an increasing role in the acquisition of key environmental data. In particular, satellite im- agery data on sea-ice distribution and global-scale maps of phytoplankton concentrations and dis- tribution are valuable. (R. Holt, FTS 893-7601)\nCOASTAL FISHERIES RESOURCES DIVISION\nLa Jolla, California\nCOMMERCIAL AND RECREATIONAL FISHERIES RESEARCH FOR MANAGEMENT\nPacific States Integrated Fisheries Economic Model: PSIFEM\nDrs. Samuel Herrick, Jr. and Dale Squires, In- dustry Economists, and Dr. Jack Doll, Summer Faculty Fellow, report significant progress in the development of the Pacific States Integrated Fisheries Economic Model (PSIFEM). PSIFEM is a positive quadratic programming model that is initially being developed to assess the economic consequences of changing biological and economic conditions within West Coast groundfish, pink shrimp, and joint venture whit- ing fisheries. Essentially, it extends the linear programming model for these fisheries, being developed by Squires, by incorporating ex-vessel supply and demand relationships into the linear program (LP) framework.\nPSIFEM is a more general model, in that it relaxes the restrictive assumptions of LP, namely that prices facing fishermen are constant, the costs of catching fish are also constant, and production from a particular fishing activity simply expands until some resource is exhausted. Therefore, the number of non-zero fishing activities will equal the number of binding resource constraints. In the West Coast groundfish fishery it is not unusual for a fishing firm or fleet to engage in a number of distinct fishing operations in which the output is a particular species or mix of species. It is unlike-\n2\nly that the number of truly fixed constraints would equal the number of observed fishing operations.\nBecause PSIFEM allows for increasing costs and decreasing prices, the number of observed fishing operations can differ from the number of binding constraints since their perceived marginal benefit and marginal cost calculations can equal- ize at the empirically observed output levels. Fur- thermore, by accounting for shifts in supply and demand of fisheries outputs, PSIFEM is able to predict the welfare or cost-benefit implications when analyzing a variety of policy issues, for example:\n1. What if an energy crisis occurs that leads to a significant increase in fuel prices or fuel shortages?\n2. What if trade policies are altered to favor in- creased U.S. imports/exports of fisheries products?\n3. What if allowable catches are changed for West Coast target species?\n4. What if limited entry, or a system of individual fisherman quotas is introduced into the West Coast groundfish fishery?\nA PSIFEM analysis of such issues will not only predict the fleet response in terms of adjusted fishing patterns, but also changes in the net economic benefits accruing to both fishermen and consumers. All results are conditional upon the status of the fishery resources over the time period of the data used to estimate the model.\nDuring July-August 1989, some major concep- tual issues regarding the specification of supply and demand relationships for different fish species and gear types were resolved. This per- mitted the researchers to proceed with the development of some preliminary models, for a subset of the fishery, for which Doll has provided calibration algorithms using GAMS (General Al- gebraic Modeling System) language. (S. Herrick, FTS 893-7111; D. Squires, FTS 893-7113)\nGroundfish Stock Assessment\nDr. Larry Jacobson, Fishery Biologist, par- ticipated in the Pacific Fisheries Management\nCouncil (PFMC) Groundfish Management Team's ad hoc review of stock assessments. The review was held at the Tiburon Laboratory, August 7-9. At the meeting Jacobson discussed, with state and NMFS colleagues, a proposed ap- proach for assessment of shortspine thornyhead stocks. He also obtained logbook data for bottom trawl catches landed in California during 1978- 1986, and length composition data for shortspine thornyhead landed in California during 1978- 1988. His goal is to develop an assessment of the shortspine thornyhead stock for use by the Groundfish Management Team and the PFMC during the 1990 management cycle. (L. Jacobson, FTS 893-7117)\nAnchovy Management\nAt the PFMC meeting held in San Diego on July 13, Industry Economist Cynthia Thomson, Fishery Biologist Larry Jacobson, and Chairper- son Rick Klingbeil (CDF&G) were appointed to the Anchovy Fisheries Management Plan (FMP) Team. The team has been charged with drafting two amendments to the existing FMP. The first amendment would allow a small reduction fishery under certain circumstances when the estimated spawning biomass is below the current cut-off level for reduction fishing. The second amend- ment stems from a requirement in the recently revised NOAA guidelines for fishery manage- ment plans that requires each FMP to include an explicit definition of overfishing. The team met for the first time August 25 at the SWFC, developed a timetable for its work, discussed preliminary options, and assigned the tasks of preparing an analysis of each option to specific individuals. It is hoped that the final version of the revised FMP will be adopted by the PFMC in March.\nLarry Jacobson, Mathematician Nancy Lo, and other Coastal Fisheries Resources Division (CFRD) colleagues have outlined approaches to: 1) evaluating the information requirements and precision of the Stock Synthesis Model currently used to estimate annual spawning biomass for the PFMC, and 2) calculating confidence intervals for spawning biomass estimates. They plan to com- plete their analyses in time for use by the NMFS\n3\nand PFMC during 1990. (L. Jacobson, FTS 893- 7117; C. Thomson, FTS 893- 7116).\nExtent of \" Avidity Bias\" in Angler Surveys Revealed\nCynthia Thomson has completed a paper en- titled \"The Effect of the avidity bias in on-site angler surveys on estimates of fishing effort and economic value.\" While on-site surveys are often more cost-effective than other sample selection techniques, they typically generate samples that are biased toward more frequent anglers. This paper compares the \"avidity bias\" associated with two surveys: 1) the Marine Recreational Fishery Statistics Survey (MRFSS), an on-site creel sur- vey of recreational anglers, and 2) the Bay Area Sportfish Economic Survey (BASES), an economic survey conducted as a mail follow-up to a random telephone canvass.\nThe results indicate that the avidity bias is much larger for the MRFSS Intercept respondents than the BASES respondents. This bias carried over into estimates of annual fishing expenditures and consumer surplus, resulting in estimates of annual economic value per angler that are 1.5 to 4.0 times larger for the Intercept than the BASES respondents. Given that the BASES sample is itself biased toward more avid anglers, these figures are probably conservative estimates of the \"true\" magnitude of the bias in the MRFSS Inter- cept relative to the angling population as a whole.\nThe paper offers the following general con- clusions:\n1. Estimates of economic value can be significantly affected by the extent of avidity bias in the sample.\n2. Angler expenditures are not necessarily propor- tional to the number of trips taken. The relationship between expenditures and avidity may be more complicated, either offsetting or exacerbating the effect of the avidity bias in the sample.\n3. The sensitivity of consumer surplus estimates to the avidity bias is affected by the functional form of the travel cost model used to generate these es- timates.\nThe paper will be presented at the International Symposium and Workshop on Creel and Angler Surveys in Fisheries Management in Houston, Texas in March 1990. (C. Thomson, FTS 893- 7116)\nSURVEY SYSTEMS DEVELOPMENT AND EVALUATION\nCruise Planned to Evaluate Use of ROV For Biomass Estimation\nThe Coastal Fisheries Resources Division is planning a jointly-funded cruise with two vessels to develop new survey techniques for estimating the biomass of demersal fisheries resources. The cruise is funded jointly by the Southwest Fisheries Center and National Undersea Research Program (NURP). The cruise will involve two ships, the F/V Gus D chartered by the SWFC and the R/V William A. McGaw chartered by Sachse Engineering As- sociates. Sachse Engineering was awarded the con- tract by NURP to operate a towed vehicle with side-scan sonar, video cameras and a 70 mm survey camera. The vehicle will be towed over depths of 100 to 700 fathoms and cameras and sonar will be used to provide a census of bottom fishes. To com- pare abundance estimates provided by the ROV to those provided by conventional trawling, the F/V Gus D, a commercial trawler, will trawl over the same grounds surveyed by the ROV. The ROV will also be towed over untrawlable grounds to deter- mine how the density of groundfish differs between trawlable and untrawlable areas.\nCruise dates have been set for September 28 on the McGaw and September 29 on the Gus D. SWFC personnel participating in the cruise will be Cruise Leader John Butler, Richard Charter, and Cindy Meyer (SWFC), and Pete Adams (Tiburon Laboratory) on board the McGaw. Cruise Leader Eric Lynn, Ron Dotson, Sue Miller and Wayne Samiere (Tiburon Laboratory) will be onboard the Gus D. The two vessels will rendezvous off Morro Bay on September 29 to begin work.\nA one day shake-down cruise on the R/V Blue Horizon with the SWFC and Sachse Engineering has been scheduled for September 22. This cruise will determine sampling procedures and operational height of the ROV and calibrate the strobes for the survey camera. (J. Butler, FTS 893-7149).\n4\n₹\nFISHERY-MARINE MAMMAL INTERACTIONS DIVISION\nLa Jolla, California\nBIOLOGY ASSESSMENT PROGRAM\nStudies Are Under Way on Effects of Seal Bombs\nUnder the 1988 amendments to the Marine Mammal Protection Act (MMPA), the Secretary of Commerce is required to conduct a study to determine that the use of seal bombs (class C explosives) does not cause injury to, or increase the mortality of, dolphins when the bombs are used to control the dolphins during yellowfin tuna purse-seining operations. In response to the MMPA requirement, Wildlife Biologist Al Myrick has been exploring different avenues of inquiry into the effects of seal bombs on dolphins. One of these involves conducting open-water tests of seal bombs on inanimate objects and dolphin carcasses to determine whether mechani- cal damage can be done to the targets by under- water seal-bomb explosions. Another study involves the monitoring of set log data for years 1986-1989 to determine percent use of seal bombs on dolphins, and to estimate annual numbers of dolphins potentially exposed to bombs. A third study, now in its early stages, will involve ex- amining inner ear tissue of purse-seined dolphin carcasses for evidence of hearing damage.\nSince July, tests have been conducted at sea using both the legal, Class-C seal bombs and il- legal foreign-made bombs (over 40 grains of ex- plosive). Using an electric detonator, the bombs were exploded remotely on target objects. Gelatin-filled bottles containing air-filled balloons and water- and air-filled metal cylinders were used as targets to simulate organ systems, and dol- phin carcasses were used to simulate whole live animals. With considerable assistance from Chuck Oliver and the SWFC dive team, targets were deployed at various depths and distances from the detonation site and fired on. After the tests, the targets were examined for damage.\nObservers have been trained in the collection of ear bones (cochlea) and a call has been made to observers at sea to begin cochlea sampling. Samples received by he SWFC will be forwarded to a noted specialist for examination and evaluation. A report of the study should be available in Novem- ber.\nResults of these and other studies in the SWFC's seal-bomb investigations will be reviewed and finalized at a Seal Bomb Workshop to be held at the SWFC in mid-November. The workshop will be attended by a small group of experts representing industry, the environmental community, and specialized fields covered in this study. (A. Myrick, FTS 893-7092).\nFISHERY DEPENDENT ASSESSMENT PROGRAM\nReport on Blue Whale Distribution in The Eastern Tropical Pacific\nDr. Steve Reilly, Fishery Biologist, and Victoria Thayer, Oceanographer, have just completed a manuscript describing the distribution of blue whales in the eastern tropical Pacific Ocean (ETP). The classical, and general, depiction of blue whale distribution includes a seasonal migration to high latitudes where they feed extensively on euphausiids, then to low latitudes where, it is thought, they rarely feed but rather mate and give birth. Foraging has not been considered a major factor in their low latitude distribution. From the patterns of blue whale distribution in the ETP, Reilly and Thayer hypothesize that forage availability may be an important determinant of blue whale habitat in low latitudes.\nFigure 1 shows the distribution of blue whales in the ETP studied from 211 sightings of 355 whales recorded during research vessel sighting surveys and by biologists aboard fishing vessels. All sightings occurred in relatively cool, produc- tive upwelling-modified waters along Baja California, the equator near the Galapagos Islands, the northern coast of South America, and around the Costa Rican Dome (a large, stationary eddy centered at 9°N, 89°W). Occupation of the most productive parts of the ETP, all with relatively large standing stocks of euphausiids, indicates that blue whales may select low latitude \"breeding\" areas which also permit foraging.\n5\n30\n20\n10.\n0 -\n-10 -\n-20 -\n130\n120\n110\n100\n90\n80\nFigure 1. Spatial distribution of 211 blue whale sightings in the eastern tropical Pacific, 1974-1988. The boundary line encloses the area in which there was at least 185 km search effort per one degree latitude-longitude square.\nBaja California was occupied seasonally, with a sighting peak coinciding with the spring peak in upwelling and biological production. The Costa Rican Dome and nearby areas on the eastern-most and shallowest end of the prominent ridge in the thermocline undergo very little seasonal variation in both physical and biological processes. This discrete area was occupied year round, suggesting either a resident population or that both northern and southern hemisphere whales visit, with tem- poral overlap and potential for interbreeding. The modal group size was one for all areas and seasons, but the frequency of groups with two or more whales was significantly higher in sightings made near the Galapagos Islands and coast of South America. (S. Reilly, FTS 893-7164).\nHONOLULU LABORATORY\nHonolulu, Hawaii\nU.S .- Japan Cooperative Seminar on Sebastes\nScientists from the United States, Japan, and Canada met in Honolulu, June 26-30, 1989, for a cooperative seminar, Rockfishes of the Genus\nSebastes: Their Reproduction and Early Life His- tory. A major goal of the seminar was to provide U.S. and Japanese scientists the opportunity to share their knowledge and examine alternative ap- proaches to the study of Sebastes. The seminar, which was held at the East-West Center on the University of Hawaii-Manoa campus, was jointly funded by the International Programs Division of the National Science Foundation (NSF) and the Japan Society for the Promotion of Science. The organizers of the seminar were George W. Boeh- lert, Director of the Honolulu Laboratory, and Juro Yamada from the University of Hokkaido, Hakodate, Japan.\nIn both the United States and Japan, the primary impetus for research on Sebastes has been its impor- tance to marine fisheries, but the secondary im- petuses have differed: Japan has focused on aquaculture potential, and the United States on basic ecology pertinent to fisheries. As a result, the two countries use different approaches to the study of reproductive biology and early life history of Sebas- tes. For example, Japan has developed an energetic aquaculture industry to replenish the coastal marine resources, while the United States concentrated on natural production and management of stocks.\nA\nN. America\n40\nJapan ZZZ\nPercentage\n30-\n20 +\n10-\n0 -\nEcology\nRepro\nPhysiol/\nFisheries\nSystematics\nBiology/\nAquaculture\nScience\nFood\nFigure 1A. Differences in research effort on rock- fishes in North America and Japan as shown by publications. Data for North America are based upon 456 references from a published bibliography by Maureen Leet of the Tiburon Lab. in 1988. Those from Japan are based upon 129 references from a bibliography by Koji Ikehara of the Japan Sea Regional Fisheries Research Lab. in Niigata. Each paper was selected on the basis of whether the genus Sebastes or Sebastodes or the word rockfish appeared in its title and was categorized according to the content implied by its title.\n6\n90+ B\nEcology .-.\n80\nFisheries A-A\nPercentage\n70\nBiology/Systematics -\n60\n50\n40\n30-\n20-\n10\n0 -\npre-1950s\n1950s\n1960s\n1970s\n1980s\nFigure 1B. Changes in the direction of research on rockfishes in North America over time.\nAn examination of pertinent publications demonstrates the differences between research ap- proaches in Japan and North America (United States and Canada). Research papers on Sebastes in North America focus largely on biology, systematics, fisheries, and ecology and, to a lesser extent, reproduction, physiology, and food science (Figure 1A). On the other hand, Japanese publications are mostly on reproduction, physiology, biology, and systematics and, to a lesser extent, aquaculture, ecol- ogy, and fisheries. Early research in North America was dominated by papers on systematics and basic\nbiology, but recent decades have seen an increase in studies on fisheries and ecology (Figure 1B).\nThe 24 scientists attending the meeting presented papers on the reproduction, physiology, life history, and aquaculture of rockfish. Many of the papers resulted from a 4-year, NSF- sponsored, cooperative research program between U.S. and Japanese scientists. NOAA Fisheries was well rep- resented, with coauthorship on 12 of the 25 papers presented.\nThe North American participants made several ties for future cooperative research and learned a great deal from their Japanese colleagues about new research on reproduction in Sebastes, includ- ing a paper and a video presentation on mating behavior and copulation. Applications of reproductive and ecological research were con- sidered in several papers on aquaculture. Some papers examined the feasibility of raising commer- cially-important rockfish in hatcheries for later release in the wild. Pilot studies in Japan -- where raising young rockfish is much more advanced than in the United States -- have involved raising rockfish to a viable size and then releasing them in the open ocean. Later, these rockfish may be cap-\nParticipants of U.S .- Japan Cooperative Seminar. Front row (left to right): Hiroya Takahashi, Hokkaido Univ .; Bruce Leaman, Pacific Biol. Station, British Columbia; Milton Love, Univ. of California, Santa Barbara; Ralph Larson, San Francisco State Univ .; Akihiko Shinomiya, Univ. of Kagoshima; Kazunori Takano, Hokkaido Univ .; Motohiro Shimizu, Hokkaido Univ. Second row: Teruyuki Nakanishi, Japan Nat. Res. Inst. of Aquaculture; Muneharu Kusakari, Hokkaido Central Fish. Exp. Station; Maxwell Eldridge, Tiburon Lab .; John Wourms, Clemson Univ .; Leslie Williams, Honolulu Lab .; Akihiro Takemura, Hokkaido Univ .; Tina Wyllie Echeverria, Univ. of Alaska-Fairbanks; Juro Yamada, Hokkaido Univ .; Jeannette Whipple, Tiburon Lab .; Yoshitaka Nagahama, Japan Nat. Inst. Basic Biol .; Lisa Seeb, S. Illinois Univ. Third row: Lewis Haldorson, Univ. of Alaska-Southeast; Arthur Kendall, Jr., Alaska Fish. Sci. Center; Jeffrey Polovina, Honolulu Lab .; George Boehlert, Honolulu Lab .; Mary\n7\ntured as adults by commercial fishermen. Such hatchery releases may help prevent natural popula- tions of rockfish from becoming depleted, but have not been proven to be effective as yet.\nThe papers presented at the meeting are being reviewed for publication as a dedicated volume of Environmental Biology of Fishes and in book form as a companion volume in the series Developments in the Environmental Biology of Fishes, which will be edited by Boehlert and Yamada. (G. Boehlert (808) 943-1211)\nINSULAR RESOURCES INVESTIGATION\nNOAA-UH Tropical Stock Assessment Workshop Held in Honolulu\nThe Tropical Assessment Workshop was held in Honolulu, July 5-26, 1989, to assist fishery scien- tists from selected Pacific island countries (Figure 3) in analyzing their research and commercial\nFigure 3. Participants of the Tropical Assessment Workshop. Front row (left to right): Paul Lokani, Donald Kobayashi, Helen Pili, Gideon Tiroba, Ned Howard, M. Kimberly Smith, Apisai Sesewa, and Richard Shomura. Second row: Albert Carlot, Gianandar Nath, Ronald Benco, Taniela Sua, Tevita Latu, Esperance Cillaurren, Jeffrey Polovina, Paul Dalzell, and Sosaia Tulua.\ncatch and effort data on deepwater snappers. The workshop was convened by NOAA Fisheries and the University of Hawaii's School of Ocean and Earth Science and Technology, with funding provided by NOAA and the U.S. Agency for Inter- national Development. Workshop participants were from the Cook Islands, Fiji, Kingdom of Tonga, Papua New Guinea, Solomon Islands, Tuvalu, Vanuatu, and Western Samoa. The ul-\ntimate objective of the analyses was to estimate the maximum sustainable yield (MSY) and the fishing effort that achieves this yield for the snapper resources in each country. The analytical methods used during the workshop were developed and adapted for use with deepwater snappers by Honolulu Laboratory staff during the past 10 years.\nFirst, participants used depletion analysis to estimate the unexploited exploitable biomass (Bo in metric tons (t)) per nautical mile (nmi) of 200 m isobath from the catch rates and catches at 18 heavily fished locations (Table 1). Except for a few outliers, most estimates of Bo cluster around the median values of 2.7 t/nmi for seamounts and 0.7 t/nmi for islands.\nTable 1. Length of 200 m isobaths and biomass per nautical mile (Bo/nmi) of 200 m isobath for all depletion analyses.\nNautical Unexploited\nLocation\nmile\nBo/nmi\nSeamounts\nKavieng\n0.25\n3.30\n1004\n1.20\n8.50\nPathfinder\n3.00\n2.00\nTavenui\n3.10\n2.50\nNapuka\n4.20\n3.80\n801\n5.00\n2.70\n901\n6.80\n2.70\nSavusavu\n7.90\n1.40\nGrid 147\n13.10\n7.00\nKadavu\n18.00\n1.50\n903\n35.00\n2.40\nMedian = 2.70\nIsland\nPaama\n28.00\n2.30\nSchoutten Islands\n33.00\n0.20\nMoon Reef to Ellington\n40.00\n0.60\nGrid 482\n40.00\n0.55\nOvalau to Moon Reef\n42.00\n0.70\nNasilai to Ovalau\n50.00\n0.70\nAmbae\n62.00\n0.70\nMedian = 0.70\nSince the bottomfish fisheries are just begin- ning to be exploited, no time series of catch and effort data is available for the production models. Thus, workshop participants estimated MSY as a fraction of Bo by using Beverton-Holt, Gulland, and Pauly's methods: ratios of MSY to Bo were about 10-30% (Table 2). For natural mortality (W) equaling 0.25, a lower bound of MSY estimated at 9% Bo was obtained. For the Beverton-Holt method with M equaling 0.5 and Pauly's method, which depends only on fish weight, MSY was estimated at about 30% Bo. Therefore, the range of 10 to 30% Bo includes the true value of MSY.\nEstimates of MSY for each Pacific island were determined as the product of MSY per nautical mile of 200 m isobath for each country and the total\n8\nTable 2. Ratios of maximum sustainable yield (MSY) to biomass (Bo) for the three methods (Gul- land, Beverton-Holt, and Pauly).\nMSY/BO M=0.25\nMSY/BO M=0.5\nGulland (0.5 m)\n0.13\n0.25\nBeverton-Holt when m/k=2\nAge at recruitment\n3 years\n0.06\n0.18\n4 years\n0.09\n0.28\nPauly (2.3 w) -0.26\nMarianas\n0.34\nPapua New Guinea\n0.28\nWestern Samoa\n0.27\nVanuatu\n0.32\nTonga\n0.28\nlength of the 200 m isobath (Table 3). For Tonga, current landings from the seamounts are almost twice the upper bound of estimated MSY, and fishing mortality (F) is about equal to M. This suggests that fishing effort in Tonga is at the level that produces the MSY, and once the seamount fishery reaches its equilibrium, catches and catch per unit effort will be substantially lower.\nTable 3. Estimates of maximum sustainable yield (MSY), landings, and fishing mortality (F) for deepwater snappers at selected Pacific island countries in 1988 (t = metric tons).\nCountry\nMSY (t/year)\nLandings (t/year)\nF/year\nTonga\n77-222\n391\n0.38\nWestern Samoa\n17-50\n25\n__ a\nFiji\n70-200\n300\n0.12\nFishing area of 500 nmi of 200 m habitat now being fished\nFiji\n426-1,280\n0\n0\nPotential fishing\narea of 3,000 nmi\nPapua New Guinea\n170-270\n0\n0\nVanuatu\n113-190\n40\n0.07\naNo estimate of q was available to estimate F.\nIn western Samoa, the deepwater snappers are already close to MSY although some increase is possible, and in Fiji, the fishery is using only about 20% of the estimated 3,000 nmi of 200 m isobath and thus has the potential to increase catches if this unfished habitat has populations of deepwater snappers. However, if the fishery remains only within the habitat currently fished, catches will decline, perhaps by 50%. In Fiji, the current level of fishing effort may be a little lower\nthan the level that produces MSY. Papua New Guinea has no appreciable landings of deepwater snappers, but a potential exists with MSY in the range of 170-270 t/year. Vanuatu's landings repre- sent only one-third to one-fifth of the potential MSY, as indicated by the current landings and level of F, so the potential exists for greater landings.\nThe Honolulu Laboratory staff that provided assistance to this workshop included: Jeffrey J. Polovina, Program Manager of the Insular Resources Investigation; David A. Somerton, Leader of the Insular Stock Assessment Program; NRC-NOAA Postdoctoral Fellow M. Kimberly Smith; Computer Programmers Ronald A. Benco and Donald Kobayashi; and Biological Tech- nician Happy A. Williams. The results of these analyses were presented in reports written by the participants and will be published in the NOAA Technical Memorandum Series. (J. Polovina (808) 943-1218)\nPELAGIC RESOURCES INVESTIGATION\nPacific Blue Marlin Tracked Successfully\nTwo Pacific blue marlin, Makaira mazara, car- rying depth-sensitive, ultrasonic transmitters were tracked successfully by Fishery Biologist Richard W. Brill of the Honolulu Laboratory, Kim Holland of the University of Hawaii's Institute of Marine Biology, and NOAA Corps Officer LTJG Scott Sullivan off the Kona Coast, island of Hawaii, July 28 to August 6, 1989. The fish were caught and released by anglers participating in the 31st Annual Hawaiian International Billfish Tournament in Kailua-Kona.\nBoth fish behaved remarkably similar to three marlin tracked in the summer of 1988, although they were captured and released about 10 nmi south of last year's capture site. After release, the two fish moved directly offshore and along parallel courses for approximately 10 nmi. This offshore movement appears to be a stereotypical response of marlin to the stress of capture. Both fish eventually turned north and proceeded in that direction for the duration of the tracking. With respect to swimming depth, both fish moved up and down only within the mixed layer (i.e., the 50-100 m layer of uniform water temperature). Further analysis of the data is proceeding. (R. Brill (808) 943-1234)\n9\nBrill Attends Two International Conferences\nFishery Biologist Richard W. Brill attended the Kjell Johansen Commemorative Symposium, Strategies of Physiological Adaptation, at the August Krogh Institute in Copenhagen, Denmark, July 6-8, 1989, and the XXXI Congress of Physiological Sciences in Helsinki, Finland, July 9-14, 1989. At the symposium in Denmark, Brill presented a poster, \"Temperature effects on the acid/base balance of isolated whole blood and plas- ma of yellowfin tuna (Thunnus albacares),\" which was coauthored with David Jones and Peter Bush- nell, who are with the University of British Colum- bia.\nThe poster described a re-investigation of the unusual rates of pH change with temperature pre- viously reported in isolated tuna blood. Tunas often subject themselves to rapid temperature changes during vertical movements, which are a regular part of their behavior. Also, because they have countercurrent, vascular heat exchangers, their muscle temperatures may be as much as 10°- 15℃ above ambient. Tuna blood is therefore regularly subjected to rapid temperature changes in open (i.e., in the gills) and closed systems (i.e., in the vascular heat exchangers). Understanding how tunas regulate their blood acid-base balance is therefore critical to understanding their habitat requirements and temperature tolerances.\nThe effects of temperature on the acid-base balance of the blood of skipjack tuna, Katsuwonus pelamis, were first investigated in vitro by S. F. Perry and others, who found similar rates of pH change with temperature in open (i.e., constant pCO2) and closed systems (-0.0131 and -0.0165 pH units/C, respectively) (cf. Comp. Biochem. Physiol. 81A:49- 53, 1985). These data contrast sharply with those for marine seatrout, Cynoscion arenarius, which have more typical rates of pH change with temperature (-0.0048 and -0.0150 pH units/°C in open and closed systems, respectively) according to a study by J. N. Cameron (Respir. Physiol. 33:129-144, 1978). Perry and others pos- tulated that the unusual rates of pH change with temperature in tuna blood were an adaptation re- lated to the unusual anatomy, physiology, and life- style of these pelagic teleosts. Blood from albacore, Thunnus alalunga, also exhibits a high rate of pH change with temperature (0.016 pH units/°C) in the open system, according to a study by J. J. Cech and others (J. Exp. Biol. 109:21-34, 1985).\nThe study described in the poster used blood from small (ca. 1-3 kg) yellowfin tuna, equi- librated at temperatures inhabited by this species and at CO2 levels corresponding to normal arterial and venous blood values. Results showed that the yellowfin tuna blood had an unusually high HCO3 and non-bicarbonate buffering capacity when compared with other teleosts. Tuna blood and plasma had the same rates of pH/℃ and pCO2/℃ in a closed system as other teleosts; this result was expected since these changes were most likely due to reciprocal titration of plasma proteins and HCO3. Tuna red blood cells appeared to be in- volved in the unusually high pH/℃ and [HCO3]/℃ changes occurring in the open system. The pH/℃ changes in the open system were pCO2 dependent and independent of [HCO3]/℃ changes, most like- ly reflecting the movement of strong ions into or out of red blood cells. The study is part of a larger effort aimed at understanding the in vivo regula- tion of acid-base status in tunas.\nAt the symposium in Finland, Brill presented an invited lecture, \"Comparative physiology of animal athletes: Tunas and other fast fishes.\" His lecture centered on the new concept that the unique anatomy, physiology, and biochemistry of tunas have evolved not to permit exceptionally high sus- tained swimming speeds, but rather to permit rapid repayment (i.e., rapid lactate metabolism) of the exceptionally large oxygen debts (i.e., high muscle lactate levels) that tunas are capable of accumulat- ing. Previously, tunas were assumed to be like human athletes: good marathoners. Brill pointed out that these terms are inappropriate despite the title of the lecture, because the unique environment in which tunas live does not lend itself to descrip- tion by analogy to situations in the terrestrial en- vironment. Brill's lecture was part of a symposium on the physiology and biochemistry of elite animal athletes. (R. Brill (808) 943-1234)\nMARINE MAMMALS AND ENDANGERED SPECIES PROGRAM\nHead Start Project Releases Female Monk Seal Pups\nAccording to Fishery Biologist John Hender- son, the Head Start Project at Kure Atoll completed another successful year on August 7, 1989, with the release of four female Hawaiian monk seal, Monachus schauinslandi, pups. The pups had\n10\nbeen maintained in a protective enclosure on Green Island at the atoll since weaning earlier this year.\nInitiated in 1981, the Head Start Project is designed to increase the survival of weaned female pups at Kure Atoll, where first- year survival of pups was very low during the 1960's and 1970's. By maintaining female pups in a wire mesh enclosure, the Project protects them from two of the sources of first-year mortality: adult male seals and tiger sharks, Galeocerdo cuvieri, both of\nwhich are known to attack weaned pups. During the field season at Kure Atoll, staff and volunteers of the Marine Mammals and Endangered Species Program maintain the protective enclosure, trap locally occurring reef fish to feed the female pups during their time in captivity, and also monitor the monk seal population.\nThe Head Start Project also \"rehabilitates\" abandoned or otherwise prematurely weaned, female monk seal pups from French Frigate Shoals, where the monk seal population may be near carrying capacity. Female pups collected from the shoals are flown to Honolulu for rehabilitation and subsequently released at Kure Atoll, after being held in the protective enclosure to ensure they are able to feed on their own. This year, three rehabilitated female seals, originally captured in 1988, were added to the Kure popula- tion. They were transported to Kure Atoll in April and maintained in the protective enclosure until being released in late May. Two of the females were sighted at Kure Atoll throughout the summer, but the third was not sighted, having either emigrated or died.\nTen pups were born at Kure Atoll in 1989; nine survived to weaning. This is the highest number of births documented at the atoll since 1981 and is a marked increase since the low of one birth in 1986. Furthermore, female seals that were \"graduates\" of the Head Start Project in its early years are now giving birth. With a relatively large cohort of young females approaching reproductive age, the number of births at Kure Atoll is expected to con- tinue to increase. (J. Henderson (808) 943-1225)\nResearch Successfully Completed on Laysan Island and Pearl and Hermes Reef\nThe annual field research directed at monitoring the Hawaiian monk seal, Monachus schauinslandi, and green turtle, Chelonia mydas, on Laysan Island\nand Pearl and Hermes Reef was completed on August 2, 1989, by Wildlife Biologist Brenda L. Becker, with the assistance of several volunteers. Preliminary results from the 3.5-month field camp at Laysan Island indicated that a minimum of 32 pups were born in 1989, which is about average for this island. The minimum survival rate (60%) of the yearling monk seals was lower than normal (80- 90%), but births (N=45) in 1988 were the highest on record since 1977, when intensive research efforts began at Laysan Island.\nThirteen mortalities of seals were documented at Laysan Island; half (seven) were adult females. Injuries due to mobbings by adult males were present on eight of the carcasses (i.e. , all seven of the adult females and one subadult male). Only one mobbing incident, which was not fatal, was observed; it involved a 5-year-old adult female and at least five adult males. One of the mortalities was of an immature seal whose skull and attached foreflipper were found in the stomach of a dead tiger shark, Galeocerdo cuvieri, that washed ashore. This is the first documented case of a monk seal skull being discovered inside a shark. Three seals were found entangled in marine debris; one incident required physical restraint to remove a small tire from an adult female.\nTurtle nesting activity on Laysan Island was quite low -- only nine nests. Three adult turtles with fibropapillomas (tumors) were sighted during the field season, compared with one sight- ing of a diseased turtle in 1988. Last year's sight- ing was the first on record at Laysan Island, although the number of turtles exhibiting fibropapillomas has been increasing around the main Hawaiian Islands. One of the diseased turtles sighted in 1989 had tumors on its eyes, and during the field season, its left front flipper was partially amputated, presumably by a tiger shark. Loss of vision due to the tumors probably made the turtle more vulnerable to shark attack.\nAfter the Laysan Island field season, re- searchers spent 2 weeks at Pearl and Hermes Reef conducting census counts as well as individual identification of monk seals via tags and identify- ing marks (i.e., scars). Fourteen pups were tagged, no mortalities were documented, and one entanglement was observed. Turtle nesting ac- tivity was again minimal. (B. Becker (808) 943- 1265)\n11\nTumors Continue to Spread in Hawaiian Green Turtles\nThe incidence of fibropapillomas, a life- threatening tumor, has substantially increased in an important aggregation of the Hawaiian green turtle, Chelonia mydas, which resides along the southern coast of the island of Molokai and, prior to 1985, had no known cases of the tumors. Ac- cording to George H. Balazs, Leader of the Marine Turtle Research Task, tag and recapture work per- formed in July 1989 indicates that 14 of 143 turtles (9.8%) captured off Molokai had tumors, com- pared with 6 of 125 turtles (4.8%) during the same period in 1988. The etiology of this disease, its mode of transmission, and its impact to the biologi- cal recovery of the green turtle population in Hawaii are presently unknown. Scientists also have yet to pinpoint why the disease has spread simultaneously at certain sites in Hawaii and Florida during the past few years.\nThe periodic monitoring and tagging of imma- ture and adult green turtles at Palau has been under way since May 1982, in cooperation with Bill Puleloa, an Aquatic Biologist with the State of Hawaii, and Ed Medeiros, a local fisherman who is well versed in the capture of sea turtles. During 1982-85, approximately 300 turtles were captured, examined, tagged, and released without any cases of tumors being seen. However, one of the turtles captured in October 1985 was heavily afflicted with these debilitating epithelial growths; the second diseased turtle was captured in June 1987.\nIncreased effort will be directed at monitoring the incidence of tumors at other coastal habitats preferred by turtles in the Hawaiian Islands. In addition, cooperative studies were initiated in Hawaii with researchers at the Universities of Florida and Chicago in concordance with the priority position assigned to this problem in the Recovery Plan for Hawaiian Sea Turtles. (G. Balazs (808) 943-1221)\nFISHERY MANAGEMENT RESEARCH PROGRAM\nMidyear Fishery Reports\nThe source of greatest controversy in Hawaii's commercial fisheries in 1989 is the emerging conflict between a group of recently arrived longline fishing boats from the Gulf of\nMexico and small-scale recreational, commer- cial, and charter boats off Oahu's Waianae coast and on Haleiwa's fishing grounds. The topic dominated discussions at the July 24-26, 1989 meeting of the Western Pacific Regional Fishery Management Council in Kahuku, Oahu. By mid- August, the two sides involved in the conflict had attended several meetings held by Council Chair- person William Paty, and informal \"rules of the road\" had been proposed. Neither Federal nor State of Hawaii regulations on the pelagic fisheries have been applicable to this situation.\nThe potential for conflicts over markets, resour- ces, and gear has increased over the past couple of years as the longline tuna fleet expanded -- from as few as 16 vessels in 1980 to 37 vessels in 1987 to at least 65 vessels in 1989. At the same time, the commercial, charter boat, and recreational trollers have expanded in number and are fishing farther from shore. Some of the newer longline vessels fish their gear in shallower depths (some immedi- ately subsurface) and closer to shore, catching a higher percentage of striped marlin, Tetrapturus audax, and yellowfin tuna, Thunnus albacares, than most of Hawaii's longline fleet. This summer, a few of the new longline boats began fishing near fish aggregating devices (FAD's) located 3.5 to 5 miles off the coasts of Oahu and Kauai. This led to a period of intense gear competition, because over the past few years, the FAD's have been used almost exclusively by trollers. Although a number of Honolulu Laboratory scientists have been asked for technical assistance during the controversy, information on the biological and economic inter- actions in these nearshore pelagic fisheries is, at best, weak.\nMeanwhile, the longline fishery for pelagic fishes and tunas remained strong through the first half of 1989. Landings by the longline fishery in the first quarter of 1989 were similar to the last quarter of 1988, which itself was a record. Tunas comprised 65% of the landings, most of which were bigeye tuna, Thunnus obesus. The largest component in the non- tuna landings was striped marlin. Substantial land- ings of broadbill swordfish, Xiphias gladius, also were reported this year, the first time that swordfish has been a primary target for Hawaii's boats. Most of the swordfish were exported to the east coast.\nDetailed estimates of troll and handline land- ings in 1989 are not available, but this does not\n12\nappear to be a particularly good year, intensifying the interaction problems with the longline fleet.\nLogbooks have been collected from a fourth precious coral trip under the experimental permit section of the Precious Coral Fishery Management Plan. Two boats have permits, but only one has fished. Detailed activity data on the fishery cannot be released because of the confidentiality restric- tions.\nActivity in the bottom fish fishery in the Northwestern Hawaiian Islands (NWHI) was light during the first half of 1989. Only five vessels were active in the fishery in the first half of 1989, making 21 trips. Catch rates on the primary species of red and pink snappers reportedly were not good, although prices have held up well.\nOnly nine trips by seven vessels were made in the NWHI lobster fishery through June 1989. Ves- sel and trip activity were lower than in 1988; however, fishing effort, catch rates for spiny lobster, Panulirus marginatus, and total lobster catches substantially exceeded the 1988 midyear levels. Not only has fishing been good, but prices also have been higher than in 1988. (S. Pooley (808) 943-1216)\nPACIFIC FISHERIES ENVIRONMENTAL GROUP\nMonterey, California\nFISHERY/ENVIRONMENTAL LINKAGES\nStock Structure and Size Composition\nThe stock structure of albacore in the North Pacific is presently an unresolved problem. Fishery Biologist Richard Parrish is currently using the extensive length frequency measure- ments taken in the Japanese baitboat fishery (479,400 fish) and those from the American fishery (318,558 fish) to examine this problem. There is circumstantial evidence which suggests that the traditional U.S. albacore fishery is based on two stocks. A principal piece of evidence is that differences in the growth rates of albacore\ncaught in the northern and southern fishing grounds have been observed (i.e. north and south of 38 degrees North). Growth studies based on a limited number of fish for which daily otolith counts have been made (98 from the northern area and 127 from the southern area) and from tag and recapture data from 521 fish indicate faster growth for fish in the southern area than in the northern area. Tag recoveries suggest that there is more interchange of albacore between the Kuroshio Current region and the northern portion of the California Current region than between the Kuroshio and the southern portion of the Califor- nia Current, and that there may be two stocks.\nThe North Pacific albacore fisheries are quite seasonal and occur in different seasons in dif- ferent regions. Also, albacore grow very quickly and the differences in size distributions between regions is heavily influenced by the interaction of these factors. To limit the seasonal bias, the analysis was limited to fish captured in July and August, when the California Current albacore fishery peaks. The data were divided into bands of 5 degrees of latitude for both the Kuroshio and California Current fisheries to show regional pat- terns in length frequencies. In the July-August period the catch from the Japanese baitboat fishery is dominated by fish taken in the Kuroshio Extension.\nThe clearest feature of the data is that all of the regions have a mode at 61-62 cm, representing 3-year old fish (A in Figures 1 and 2). This mode dominates the size composition in each of the regions; with the significant exception of the 30\nA\n35 N (n=6,109)\n14\nPERCENTAGE AT LENGTH\n12\n10\n30 N (n=14,398)\n8\n40 N (n=3,925)\n6\nB\nc\n4\n2\n50\n60\n70\n80\n90\n100\nLENGTH (CM)\nFigure 1. Length frequencies of albacore taken in July-August (1965-82) within 5 degree latitude bands by the Japanese baitboat fishery.\n13\n14\n40 N (n=41,867)\nPERCENTAGE AT LENGTH\n45 N (n=96,981)\n12\n35 N (n=32,211)\nB\n10\n50 N (n=8,509)\n8\n1\n6\n30 N (n=38,132)\n25 N (n=2,790)\n4\n2\n50\n55\n60\n65\n70\n75\n80\n85\nLENGTH (CM)\nFigure 2. Length frequencies of albacore taken in July-August (1961-84) within 5 degree latitude bands in the California Current Region.\ndegree bands in the Kuroshio where albacore of this size comprise only a very minor proportion of the size composition and in the most southern 5 degree bands in the California Current where it is the secondary mode. Thus, 3-year old albacore are the same size in July and August in all regions in which they are caught in the North Pacific.\nThe size of 4-year old albacore is quite a different story. In the California Current region, size com- position has a mode at 73 cm in the 40, 45, and 50 degree north bands (B in Figure 2); whereas the mode is at 76 or 77 cm in the 25, 30, and 35 degree north bands (C in Figure 2). In addition, there is a continuous increase in the proportion of fish larger than 73 cm from the north to the south. In the Japanese baitboat fishery there are modes at either 77 or 78 cm at the 30, 35, and 40 degree north bands (C in Figure 1); however, the bulk of the albacore catch in the 30 degree north bands are larger than the mode for 4-year olds.\nThe evidence from this analysis suggests that the size composition, and presumably the growth rates, of albacore are more similar in the Western Pacific region and the southern portion of the California Current than they are in the northern and southern portions of the California Current or in the northern portion of the California Current and the Western Pacific. Three-year olds appear to be the same size everywhere, and the size of 4-year olds appears to be primarily a function of latitude. (D. Parrish (408) 646-3311)\nMATHEMATICAL MODELING AND DATA ANALYSIS\nResults Show Long-Term Decline in Albacore Catch Rates\nOperations Research Analyst Roy Men- delssohn has been developing predictive models for the West Coast albacore fishery utilizing catch information from the albacore logbook program. As a part of this program, the annual variations in catch rates are being examined. Recent results show that there has been a long-term decline in the number of fish caught per day in the fishery and that the decline has been particularly dramatic in the region which has traditionally provided the bulk of the catch from the northern Oregon- Washington portion of the fishery. During the 1960s, median catches averaged nearly 100 fish per day in the northern fishery, and catches ex- ceeding 200 fish per day were quite common (Figure 3). In the 1970s, median catch per day\n600-\n400\nextreme values\n.\nT\n. -\n-\n1.5 x interquartile range\n200+\n75 th percentile\nmedian\nT\n1\nT\n1964 1965\n1966\n1967\n1968\n1969\ninterval\n600+\nFish per day\n100\n·\n200\n.\n-\nH\n1970\n1971\n1972\n1973\n1974\n1975 1976 1977\n7978\n1979\n1980 1981 1982 1983\nFigure 3. Albacore catch per day, from logbook data, for the region of maximum catch in the north- ern fishery (i.e. between 40 and 48 degrees north and 50 to 200 km offshore).\ndeclined markedly and catches above 200 fish per day became rare. Catch rates continued to decline in the early 1980s; median catch ran around 25 fish per day and catches of 100 fish per day be- came rare. (R. Mendelssohn (408) 646-3311)\n14\n)\n95 % median\n0-\nconfidence\n196\n1962 1963\n-\n&\nPELAGIC FISHERIES RESOURCES DIVISION\nLa Jolla, California\nMULTISPECIES DATA COLLECTION AND EVALUATION PROGRAM\nSummary of the 1988 North and South Pacific Albacore Data\nAnthony Majors, Fishery Biologist, and Chris- tina Perrin, Computer Programmer Analyst, SWFC, and Forrest Miller, IATTC, have com- pleted SWFC Administrative Report LJ-89-19, which summarizes 1988 U.S. Pacific albacore fisheries. Catches of albacore in the northern fishery have increased slightly from 2,900 metric tons (t) in 1987 to 4,800 t in 1988, but are still well below the 20-year average of 16,000 t (1968-87). The average sizes of fish landed in the northern fishery (12.8 lbs), was slightly smaller than those landed in 1987 (14.9 lbs). Catch rates in fish per standard day's fishing increased from 70 fish per day in 1987 to 117 fish per day in 1988.\nParticipation in the south Pacific U.S. albacore fishery reached its highest level (43 vessels in 1988) since its start in 1986. Catches for the southern fishery increased substantially from 700 t in 1987 to 3,500 t in 1988. Average size of fish caught was 14.9 lbs. (A. Majors, FTS 893-7077; C. Perrin, FTS 893-7078)\nSTOCK ASSESSMENT AND FISHERY IMPACT ANALYSIS PROGRAM\nTuna Avifauna\nFishery Biologist David Au, has prepared a manuscript comparing the avifaunal charac- teristics of \"log\", \"school\", and \"porpoise\" as- sociated schools of tuna in the eastern tropical Pacific. Some 1,762 catch records, which were obtained by observers during 1974 and 1975 when much information on species associated with tuna catches was collected, were analyzed. Terns and small shearwaters were most abundant with\nschoolfish tuna, while boobies, frigatebirds, and the larger shearwaters were more abundant with logs, and especially porpoise-associated tuna. This difference was observed in the occurrence rates of the bird species, and in the flock sizes by species and flock characteristics. It is hypothesized that the avifaunal differences are re- lated to species-specific, aerial foraging tactics used by the birds in pursuit of prey driven to the surface by tuna. (D. Au, FTS 893-7071)\nTIBURON LABORATORY\nTiburon, California\nGROUNDFISH COMMUNITIES INVESTIGATIONS\nOccurrences of First-Year Juvenile Rockfishes in Nearshore Habitats Indicate Weak Recruitment in 1989.\nDirect underwater counts of first-year juvenile rockfishes in nearshore habitats along the Men- docino and Sonoma Coasts indicate that the cur- rent year-classes of the three major species, Sebastes flavidus, S. mystinus, and S. melanops, are relatively weak. As in previous years, the comparisons between sites and years are based on counts made between August 15 and September 15, by which time virtually all recruits of these species that will settle in the nearshore habitats have done so. This year's counts, which were made by Fishery Biologists Dan Howard and Tony Chess of the Groundfish Communities In- vestigations, indicate levels of recruitment similar to 1984, another weak year (Tables 1 and 2). In fact, of the three, there were fewer S. flavidus and S. melanops counted this year than any other year since the El Niño year of 1983.\nDespite the relatively low numbers, however, certain patterns noted during previous years remained evident (although less so than during years of greater abundance). Thus, the first-year juvenile S. flavidus continued to be more numerous off Mendocino than off Sonoma, while the reverse was true of S. mystinus.\n15\nTable 1 .-- Mean number (standard error in parentheses) of first-year juveniles counted/minute off the Mendocino coast during August, 1989. Results from other years provided for comparison. n=number of one minute assessments.\nSpecies\n1983 n=36\n1984 n=57\n1985 n=50\n1986 n=103\n1987 n=112\n1988 n=62\nn=184\nS. flavidus\n0.00\n6.58\n115.60\n6.01\n102.66\n59.47\n2.63\n(0.00)\n(2.29)\n(21.26)\n(1.50)\n(11.08)\n(10.23)\n(0.96)\nS. mystinus\n0.27\n1.49\n70.56\n7.83\n181.04\n75.89\n6.07\n(0.09)\n(0.30)\n(15.32)\n(1.88)\n(26.19)\n(10.18)\n(0.93)\nS. melanops\n0.41\n0.31\n4.34\n9.52\n7.58\n5.94\n2.99\n(0.14)\n(0.08)\n(1.54)\n(2.08)\n(1.24)\n(1.35)\n(0.56)\nTotal\n0.68\n8.38\n190.50\n23.35\n291.67\n141.29\n11.69\n(0.19)\n(2.33)\n(29.82)\n(3.91)\n(33.99)\n(16.88)\nTable 2 .-- Mean number (standard error in parentheses) of first- year juveniles counted/minute off the Sonoma coast during August, 1989. Results from other years provided for comparison. n=number of one minute assessments.\nSpecies\n1984 n=57\n1985 n=50\n1986 n=103\n1987 n=112\n1988 n=62\n1989 n=184\nS. flavidus\n4.39\n135.17\n6.73\n89.39\n0.92\n1.26\n(1.48)\n(26.00)\n(2.29)\n(18.42)\n(7.94)\n(0.81)\nS. mystinus\n4.89\n117.63\n15.27\n328.05\n175.06\n7.13\n(1.29)\n(19.50)\n(3.81)\n(52.15)\n(16.76)\n(1.43)\nS. melanops\n1.63\n4.40\n3.00\n4.48\n6.40\n2.46\n(0.52)\n(1.17)\n(1.31)\n(1.70)\n(1.95)\n(0.74)\nTotal\n10.91\n257.20\n24.97\n442.48\n221.38\n10.85\n(2.12)\n(35.38)\n(5.17)\n(66.72)\n(22.55)\n(E. Hobson, FTS 556-0565)\nTrends in Sablefish Abundance and Diet with Depth and Time of Day\nSablefish (Anoplopoma fimbria) data from 1987 and 1988 SWFC Jordan cruises off central California show two trends: 1) changes with depth, and 2) changes with the daily-24 hour cycle. Fishery Biologists Peter Adams and Wayne Samiere of the Groundfish Communities Inves- tigations have identified these basic trends in sablefish population abundance and diet using trawl and stomach contents data. Trawl abun- dance data (Figure 1) shows an increase in number of sablefish both with increasing depth and during the 0200 to 1000 time strata. Sablefish are not only more abundant with depth, but also have an in- creasing trend of average size with depth (Figure 2). The low or level abundances of sablefish in\n72.4\n40.9\nAVE. NUMBER\n38.2\n27\n11.8\n12.7\n2200\n1080\n0600\nTIME\n630\nDEPTH\n1400\n270\nFigure 1. Time and depth distribution (in meters) of sablefish Anoplopoma fimbria.\n16\n1989\n700\n650\nAVERAGE LENGTH (mm)\n600\n611.3 (9.2)\n550\n560.6\n(3.5)\n546.9 (2.8)\n500\n(3.5)\n499.8\n(3.8)\n450\n452.6\n(6.7)\n400\n380.4\n(6.1)\n350\n.\n300\nT\n200\n350\n550\n700\n900\n1 100\n1300\nDEPTH (meters)\nFigure 2. Average length of sablefish Anoplopoma fimbria captured during 1987 and 1988 slope sur- vey cruises, by sampling depth.\n366-732 m depth strata also occur with the other common fish species. The increase in abundance related to the 0200-1000 time strata occurs in all depth strata, but is less prominent in the 366-732 m strata. The sample size is not large enough to further subdivide the time strata, but there are indications that the increase in the 0200-1000 time strata is occurring just after sunrise (approximately 0600-1000).\nSablefish have two distinct feeding modes; ben- thic and pelagic. The benthic mode consists of feeding on ophiuroids, polychaetes, and bottom fishes, principally longspine thornyheads, Sebas- tolobus altivelis. The pelagic feeding mode con- sists of heteropods, thaliaceans, and pelagic fishes such as myctophids, and Pacific whiting. In- dividual sablefish may be feeding in either or both modes.\n90\nBO\nFISH SPECIES\nAVERAGE GUT VOLUME\n70\nXXX BENTHIC\n60\nZZZ PELAGIC\n50\n40\n30\n20\n10 .\n0\n0000 to 0600\n0600 to 0900\n0900 10 1200\n1200 to 1500\n1500 to 1800\n1800 10 2400\nTIME\nFigure 3. Average gut volumes for major prey groups of sablefish.\nSablefish diet also shows trends with depth and time of day (Figure 3). Fishes increase as part of the diet from 30-50 percent over a depth range of 183-1281 m. The timing of certain prey taken from pelagic habitats shows a strong decline in the diet during morning and mid-day (approximately 0900-1500).\nSablefish have a strong pelagic feeding com- ponent. This means that a substantial portion of the population will be off-bottom and unavailable to bottom trawl gear. This has implications for estimating population size, especially since the timing of this off-bottom behavior is not uniform. (P. Adams, FTS 556-0565).\nGROUNDFISH PHYSIOLOGICAL ECOLOGY INVESTIGATIONS\nRockfish Conference\nFishery Biologists Drs. Jeannette Whipple and Mickey Eldridge attended a joint Japanese- American conference on reproduction and early life history of rockfishes (Genus Sebastes), June 26- July 1, at the University of Hawaii (see p. 6). Eldridge presented a paper entitled \"Reproductive performances of yellowtail rockfish, Sebastes flavidus\" which included much of the research findings from over 3 years of studies on the yel- lowtail rockfish from Cordell Bank, California. Results that described and analyzed reproductive strategies were organized by multiple levels in an attempt to provide a comprehensive overview of reproductive life history of yellowtail rockfish.\nExpansion of Yellowtail Rockfish Sampling\nThree years of studies on the reproduction and physiological conditions of yellowtail rockfish from Cordell Bank, California, were recently com- pleted. Preliminary results showed that this population had many traits typical of fish from the southern extent of their range. There were also some unique traits that may relate to their remote seamount habitat. In order to further characterize this population and to relate it to other yellowtail rockfish populations throughout its range, an ex- panded sampling program is planned that will pro- vide the opportunity to compare the Cordell Bank population with those from Queen Charlotte Sound, the central Washington coast, and Heceta Bank, Oregon. The research is to include synoptic studies that cover such aspects as blood nutrients,\n17\ndiseases and parasites, gonadal histology, and general measures of condition. Fecundity studies that examine the factors relating to reproductive and adaptive capacities will also be part of this research. The program will begin in November and sampling will be done on both chartered and commercial vessels. (J. Whipple, FTS 556-0565)\nGROUNDFISH ANALYSIS INVESTIGATIONS\nWidow Rockfish Stock Assessment Draft Prepared\nFishery Biologists Joseph Hightower and Wil- liam Lenarz of the Groundfish Analysis Investiga- tions prepared a draft of the annual stock assessment report of the widow rockfish fishery. Their assess- ment utilized catch-at-age data collected from the fishery between 1980 and 1988. Deterministic cohort analysis (computer program GENCOH) and stochastic catch at age analysis (computer program Cagean and the stock synthesis model of Methot) were used to analyze the data.\nThe deterministic and stochastic approaches have different strengths and weaknesses. The deter- ministic approach assumes that catches-at-age are measured without error, which is unlikely, and it is necessary to provide starting values of fishing mor- tality. However the deterministic approach allows age specific selectivity to vary from year to year. The stochastic approaches do not allow age specific selectivity to vary from year to year and also require some constraints on starting values of fishing mor- tality. However the stochastic approaches fit fewer parameters and allow catch-at-age to be measured with error. The stock synthesis model allows age specific selectivity curves to vary from area to area. This feature was explored for three separate areas. While the results were promising, the practical use of area specific selectivity curves awaits further work.\nWhile there is some uncertainty in the strength of recent year-classes and current biomass, results of the assessment indicate that biomass is lower than in previous years and that the harvest should be reduced. The lower biomass is the result of the normal fishing down process and the entry of two very weak year-classes into the fishery. The biomass is estimated to be close to the maximum sustainable yield level. The authors recommend that the 1990 harvest be set at 7,900 t. This is lower than the expected 1989. harvest, 12,400 t, and the 1984-88 average, 10,000 t.\nThe report will serve as the technical basis for the recommendation of allowable biological catch (ABC) by the Groundfish Management Team to the Pacific Fishery Management Council after review. The review process began in Tiburon, August 7-9, when Hightower and Lenarz presented the report to the Ad Hoc Stock Assess- ment Committee of the team. Hightower also presented this assessment to the team later in the week. The report has been distributed to the Scientific and Statistical Committee of the Coun- cil for further review. The team will make its recommendation for ABC during the November Council meeting. (J. Hightower, FTS 556-0565)\nINFORMATION TECHNOLOGY SERVICES\nInspector General Reviews Information Technology 1995 Project\nA special unit of the Commerce Inspector General's (IG) office has been reviewing future high-tech procurements, including major com- puter systems within NMFS. Two of their specialists were appointed to survey the NMFS Information Technology (IT) project, and have been gathering information about regional com- puter resources, planning processes for the proposed NMFS-wide IT-95 computer system, and the Request for Proposal for the system. Dorothy Roll, Computer Systems Analyst, has been assisting the Washington office in these in- teractions with the IG. A report on the investiga- tion was released by the IG in August, in which the suitability of the IT-95 system project was questioned. NMFS and the IG office are now negotiating the issue, and until further notice, action on the IT-95 project is on hold. (D. Roll, FTS 893-7057)\nPUBLICATIONS\nPublished\nButler, John L., Carol A. Kimbrell, William C. Flerx and Richard D. Methot. 1989. The 1987-88 demersal fish surveys off central California (34°30'N to 36'30'N). U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS-SWFC-133, 11 p.\n18\nMason, Janet E. 1989. The southern California jack mackerel fishery, and the age and length composi- tion of the catch for the 1972-73 through 1983-84 seasons. Calif. Dep. Fish and Game, Mar. Res. Tech. Rep. 58, 38 p.\nMoffitt, Robert B., Frank A. Parrish and Jeffrey J. Polovina. 1989. Community structure, biomass and productivity of deepwater artificial reefs in Hawaii. Bull. Mar. Sci. 44:616-630.\nArtificial reef modules constructed of plastic or concrete were deployed at three sites in deep water on Penguin Bank, Hawaii, in October 1985. Fish communities were censused shortly after deploy- ment and irregularly thereafter, by using the manned submersibles Makalii and Pisces V. In determining the aggregated biomass of transient fish species, depth of reef placement was more important than the reef's structural material and configuration. Con- versely, reef structural material and configuration were more important than depth in determining the species diversity, richness and perhaps biomass of resident species attracted to these deepwater artifi- cial reefs. Results suggest that small-scale, deep- water artificial reefs in Pacific island areas function primarily as devices for aggregating fish rather than increasing fish production and that reef configura- tion and structural material are not very important in aggregating transient species.\nPolovina, Jeffrey J. 1989. A debate on responsible artificial reef development. Part III. Should anyone build reefs? Bull. Mar. Sci. 44:1056-1057 (Note).\nPolovina, Jeffrey J. and Ichiro Sakai. 1989. Impacts of artificial reefs on fishery production in Shimamaki, Japan. Bull. Mar. Sci. 44:997-1003.\nThe role of artificial reefs as a tool for increasing fishery production rather than just aggregating fish is addressed for two fisheries, octopus, Octopus dofleini, and flatfish, (Pleuronectidae), near Shimamaki, Japan. The time series of catch and effort data examined covers periods before and after two adjacent fishing grounds received 8,645 and 40,766 m3 of artificial reef. Octopus catches were increased by 4% per 1,000 m3 of artificial reef or by an average of 1.8 kg/m3 of artificial reef. Artificial reefs aggregated flatfishes but did not increase catches in the regions. A survey of fishermen in the two regions revealed that the reefs generally are considered beneficial.\nRalston, Stephen and Happy A. Williams. 1989. Numerical integration of daily growth increments: An efficient means of ageing tropical fishes for stock assessment. Fish. Bull., U.S. 87:1-16.\nFor an objective, cost-effective ageing methodology applicable to tropical species, a new approach to estimating parameters of the von Bertalanffy growth\nequation through the study of otolith microstructure was developed and applied to Pristipomoides zonatus, a deepwater snapper widely distributed throughout the Indo-Pacific region. The average width of sagittal daily growth increments was used to measure otolith growth rate, which was then related to the size of the otolith. The data were numerically integrated, providing estimates of age (in years) at regular 500-um increments to otolith length, which was then used to predict fork length (FL mm) at age with regression analysis. The data were fitted to the von Bertalanffy growth model, resulting in\nFL=442 (1-exp(-0.234(Age+0.892))). The method was critically examined and validated through the study of 1) annual hyaline and opaque markings that appear in the otoliths, 2) Monte Carlo simulation, 3) length-frequency analysis, 4) ex- amination of spawning seasonality relative to back- calculated birth date taken from the time of first annulus formation, and 5) empirical comparisons with the literature concerning snapper growth.\nSeaman, William, Jr., Raymond M. Buckley and Jeffrey J. Polovina. 1989. Advances in knowledge and priorities for research, technology and management related to artificial aquatic habitats. Bull. Mar. Sci. 44:527-532.\nSeki, Michael P. and Michael W. Callahan. 1988. The feeding habits of two deep slope snappers, Pris- tipomoides zonatus and P. auricilla, at Pathfinder Reef, Mariana Archipelago. Fish. Bull., U.S. 86:807-810.\nUeber, Edward. 1989. Xanthic, gigantic China rock- fish. Calif. Fish and Game 75(1):47-48.\nApproved by Science and Research Director, SWR\nBakun, Andrew. Global warming and the coastal up- welling system. For publication in Provocative Statement, Greenhouse Effects Workshop, Univer- sity of California, Davis.\nBakun, Andrew. Global climate change and intensifica- tion of coastal ocean upwelling systems. For con- sideration for publication in Science.\nBoehlert, George W., Muneharu Kusakari and Juro Yamada. Oxygen consumption during gestation in female Sebastes schlegeli and a comparison with embryonic oxygen requirements. U.S .- Japan Cooperative Seminar, Rockfishes of the Genus Sebastes: Reproduction and Early Life History, Honolulu, HI 96822-2396, 26- 30 June 1989. En- vironmental Biology of Fishes.\nCohen, Daniel M., Richard H. Rosenblatt and H. Geof- frey Moser. Biology and description of a bythitid fish from deep-sea thermal vents in the tropical\n19\neastern Pacific. For consideration for publication in Deep Sea Research.\nConte, Frank P., Kazunori Takano, Akihiro Takemura and George W. Boehlert. Ontogeny of the sodium pump in larval rockfish, Sebastes. For publication in the Rockfish Symposium Papers -- Environmental Biology of Fishes.\nGerrodette, Tim and William G. Gilmartin. Demographic consequences of changed pupping and hauling sites of the Hawaiian monk seal. For consideration for publication in Science.\nHenderson, John R. Recent entanglements of Hawaiian monk seals in marine debris. For publication in the Proceedings of the Second International Conference on Marine Debris.\nHolland, Kim, Richard Brill and Randolph K. C. Chang. Horizontal and vertical movements of Pacific blue marlin captured by sport- fishing techniques. For consideration for publication in Fishery Bulletin, U.S. [Note].\nJohanos, Thea C. Juvenile Hawaiian monk seal survival. For publication in the Eighth Biennial Conference on the Biology of Marine Mammals (Abstract).\nMacCall, Alec D. Impacts of global warming on California's marine fisheries. For publication in Provocative Statement, Greenhouse Effects Workshop, University of California, Davis.\nMoser, H. Geoffrey and George W. Boehlert. Ecology and distribution of pelagic larval and juvenile Sebastes. For consideration for publication in En- vironmental Biology of Fishes.\nMuench, R. D., J. T. Gunn and D. M. Husby. Mid-winter 1988 physical oceanographic observations in the Scotia Sea. For consideration for publication in the Antarctic Journal of the United States.\nParks, Wesley W., Patricia Donley and Samuel F. Herrick, Jr. U.S. trade in tuna for canning, 1987. For con- sideration for publication in Marine Fisheries Review.\nSakagawa, Gary T. Are U.S. regulations on dolphin-tuna fishing driving U.S. seiners to foreign-flag registry? For consideration for publication in the North American Journal of Fisheries Management.\nShimizu, Motohiro, Muneharu Kusakari, Mary M. Yok- lavich, George W. Boehlert and Juro Yamada. Ultrastructure of the epidermis and digestive tract in Sebastes embryos, with special reference to the up- take of exogenous nutrients. For publication in the Rockfish symposium Papers -- Environmental Biol- ogy of Fishes.\nYoklavich, Mary M. and George W. Boehlert. Uptake and utilization of 14C-glycine by Sebastes melanops embryos. For consideration for publication in En- vironmental Biology of Fishes.\nAdministrative Reports\nAdministrative Report LJ-89-07 by Christina H. Perrin and Anthony P. Majors \"U.S. Pacific albacore fishery data base description\" is not available for distribution.\nEdwards, Elizabeth F. and Christina H. Perrin. 1989. Effects of dolphin group type, percent coverage, and fleet size on estimates of dolphin mortality derived from tuna vessel observer data. SWFC Admin. Rep., La Jolla, LJ-89-22, 24 p.\nForney, Karin A., Doyle A. Hanan and Jay Barlow. 1989. Detecting tends in harbor porpoise abun- dance using aerial surveys: A preliminary report based on three years. SWFC Admin. Rep., La Jolla, LJ-89-20, 13 p.\nWetherall, Jerry A. 1989. Strategic planning for North Pacific squid driftnet entanglement research. SWFC Admin. Rep., Honolulu, H-89-9, 51 p.\n20\nUNITED STATES DEPARTMENT OF COMMERCE\nNATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION NATIONAL MARINE FISHERIES SERVICE SOUTHWEST FISHERIES CENTER 8604 LA JOLLA SHORES DRIVE P.O. BOX 271 LA JOLLA, CALIFORNIA 92038 OFFICIAL BUSINESS PENALTY FOR PRIVATE USE, $300\nAN EQUAL OPPORTUNITY EMPLOYER\nPOSTAGE AND FEES PAID DEPARTMENT OF COMMERCE 210\nU.S.MAIL\n®\nTHIRD CLASS",
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                    "content": "criteria that were provided by the Panel and used",
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                    "content": "to evaluate three alternative research strategies.",
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                    "content": "should consider the likely budget level. In addi-",
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                    "content": "tion, they expressed concern that there is insuffi-",
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                    "content": "cient time between the beginning of the fiscal year",
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                    "content": "(October 1) when funding becomes available and",
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                    "content": "the beginning of the field season in late November",
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                    "content": "to complete contracts and obtain equipment and",
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                    "content": "supplies. They suggested that funding should be",
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                    "content": "provided one year in advance.",
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                    "content": "The members also felt that the research should",
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                    "content": "meet research priorities set by the Convention for",
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                    "content": "Resources (CCAMLR). Research should also be",
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                    "content": "done without duplicating research efforts of other",
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                    "content": "nations and other U.S. research efforts. Finally,",
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                    "content": "tasks for which the U.S. is uniquely qualified",
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                    "content": "(e.g., collection of satellite imagery data) should",
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                    "content": "be given priority.",
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                    "content": "taken in conjunction with either of the three alter-",
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                    "content": "focus on the Antarctic Peninsula which has been",
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                    "content": "centrated integrated studies. This area is impor-",
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                    "content": "tant to commercial fisheries, is home to a high",
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                    "content": "abundance of protected species, and offers the",
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                    "content": "advantage of complementing other national and",
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                    "content": "Based upon recommendations of the Advisory",
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                    "content": "during the austral summer to investigate factors",
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                    "content": "influencing the reproduction, growth, survival,",
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                    "content": "abundance, and distribution of key biotic com-",
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                    "content": "ponents of the marine ecosystem. The research",
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                    "content": "will be conducted in the vicinity of Elephant Is-",
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                    "content": "land, South Shetland Islands. It will examine both",
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                    "content": "intra- and inter-annual natural variability on a",
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                    "content": "long-term basis to assess the potential impact of",
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                    "content": "human activities. A 10-year time series of meas-",
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                    "content": "and land-based sites, development of reliable sur-",
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                    "content": "vey methods for interpreting the results of",
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                    "content": "better determine krill abundance and distribution,",
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                {
                    "content": "parameters of predatory species were reviewed.",
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                {
                    "content": "Based on members' experiences in using the in-",
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                    "content": "structions and results from sensitivity analyses,",
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                    "content": "major revision and reorganization were recom-",
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                {
                    "content": "mended for most standard methods. The draft",
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                    "content": "forms for recording field data and reporting sum-",
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                    "content": "mary data were then reviewed. In many cases,",
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                {
                    "content": "revisions were completed to accommodate chan-",
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                    "content": "ges in the standard methods.",
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                {
                    "content": "The collection of environmental data required",
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                    "content": "to monitor predator and prey species was inves-",
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                    "content": "tigated. The information required to collect en-",
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                {
                    "content": "vironmental data was divided into two categories,",
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                {
                    "content": "environmental features that have a direct in-",
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                    "content": "fluence on predators and environmental condi-",
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                {
                    "content": "tions that have an indirect effect through their",
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                {
                    "content": "impact on the prey. Features that have a direct",
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                },
                {
                    "content": "influence on predators (e.g., sea ice, local",
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                {
                    "content": "weather) should be the emphasis at land-based",
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                },
                {
                    "content": "monitoring sites. The Group decided that features",
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                {
                    "content": "that have an indirect effect on predators (e.g.,",
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                    "content": "water circulation, productivity) should be con-",
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                {
                    "content": "sidered in association with the distribution and",
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                {
                    "content": "abundance of prey and should be addressed by the",
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                },
                {
                    "content": "CCAMLR Working Group on Krill. The Group",
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                },
                {
                    "content": "noted that remote sensing using satellites should",
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                    "content": "play an increasing role in the acquisition of key",
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                {
                    "content": "environmental data. In particular, satellite im-",
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                },
                {
                    "content": "agery data on sea-ice distribution and global-scale",
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                    ]
                },
                {
                    "content": "maps of phytoplankton concentrations and dis-",
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                    ]
                },
                {
                    "content": "tribution are valuable. (R. Holt, FTS 893-7601)",
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                },
                {
                    "content": "COASTAL FISHERIES",
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                },
                {
                    "content": "RESOURCES DIVISION",
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                },
                {
                    "content": "La Jolla, California",
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                },
                {
                    "content": "COMMERCIAL AND",
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                },
                {
                    "content": "RECREATIONAL FISHERIES",
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                },
                {
                    "content": "RESEARCH FOR MANAGEMENT",
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                },
                {
                    "content": "Pacific States Integrated Fisheries Economic",
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                {
                    "content": "Model: PSIFEM",
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                },
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                    "content": "Drs. Samuel Herrick, Jr. and Dale Squires, In-",
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                },
                {
                    "content": "dustry Economists, and Dr. Jack Doll, Summer",
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                    "content": "Faculty Fellow, report significant progress in the",
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                    "content": "development of the Pacific States Integrated",
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                {
                    "content": "Fisheries Economic Model (PSIFEM). PSIFEM is",
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                {
                    "content": "a positive quadratic programming model that is",
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                    "content": "initially being developed to assess the economic",
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                {
                    "content": "consequences of changing biological and",
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                    "content": "economic conditions within West Coast",
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                },
                {
                    "content": "groundfish, pink shrimp, and joint venture whit-",
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                {
                    "content": "ing fisheries. Essentially, it extends the linear",
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                },
                {
                    "content": "programming model for these fisheries, being",
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                },
                {
                    "content": "developed by Squires, by incorporating ex-vessel",
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                {
                    "content": "supply and demand relationships into the linear",
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                },
                {
                    "content": "program (LP) framework.",
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                {
                    "content": "PSIFEM is a more general model, in that it",
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                {
                    "content": "relaxes the restrictive assumptions of LP, namely",
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                },
                {
                    "content": "that prices facing fishermen are constant, the costs",
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                {
                    "content": "of catching fish are also constant, and production",
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                    "content": "from a particular fishing activity simply expands",
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                {
                    "content": "until some resource is exhausted. Therefore, the",
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                    ]
                },
                {
                    "content": "thermore, by accounting for shifts in supply and",
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                {
                    "content": "demand of fisheries outputs, PSIFEM is able to",
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                {
                    "content": "predict the welfare or cost-benefit implications",
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                    "content": "when analyzing a variety of policy issues, for",
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                },
                {
                    "content": "example:",
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                {
                    "content": "1. What if an energy crisis occurs that leads to a",
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                {
                    "content": "significant increase in fuel prices or fuel shortages?",
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                {
                    "content": "2. What if trade policies are altered to favor in-",
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                            "offset": 11052,
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                {
                    "content": "creased U.S. imports/exports of fisheries products?",
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                    "spans": [
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                {
                    "content": "3. What if allowable catches are changed for West",
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                    "spans": [
                        {
                            "offset": 11155,
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                },
                {
                    "content": "Coast target species?",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 11205,
                            "length": 21
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                    ]
                },
                {
                    "content": "4. What if limited entry, or a system of individual",
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                        5,
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                    "spans": [
                        {
                            "offset": 11227,
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                    ]
                },
                {
                    "content": "fisherman quotas is introduced into the West Coast",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 11279,
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                    ]
                },
                {
                    "content": "groundfish fishery?",
                    "polygon": [
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                    "spans": [
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                            "offset": 11330,
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                },
                {
                    "content": "A PSIFEM analysis of such issues will not only",
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                    "spans": [
                        {
                            "offset": 11350,
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                        }
                    ]
                },
                {
                    "content": "predict the fleet response in terms of adjusted",
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                },
                {
                    "content": "fishing patterns, but also changes in the net",
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                {
                    "content": "economic benefits accruing to both fishermen and",
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                            "offset": 11491,
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                },
                {
                    "content": "consumers. All results are conditional upon the",
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                            "offset": 11540,
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                    ]
                },
                {
                    "content": "status of the fishery resources over the time period",
                    "polygon": [
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                            "offset": 11588,
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                },
                {
                    "content": "of the data used to estimate the model.",
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                            "offset": 11641,
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                },
                {
                    "content": "During July-August 1989, some major concep-",
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                            "offset": 11681,
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                },
                {
                    "content": "tual issues regarding the specification of supply",
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                            "offset": 11725,
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                },
                {
                    "content": "and demand relationships for different fish",
                    "polygon": [
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                            "offset": 11775,
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                },
                {
                    "content": "species and gear types were resolved. This per-",
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                    "spans": [
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                            "offset": 11819,
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                    ]
                },
                {
                    "content": "mitted the researchers to proceed with the",
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                            "offset": 11867,
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                },
                {
                    "content": "development of some preliminary models, for a",
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                            "offset": 11910,
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                },
                {
                    "content": "subset of the fishery, for which Doll has provided",
                    "polygon": [
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                {
                    "content": "calibration algorithms using GAMS (General Al-",
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                },
                {
                    "content": "gebraic Modeling System) language. (S. Herrick,",
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                            "offset": 12054,
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                    ]
                },
                {
                    "content": "FTS 893-7111; D. Squires, FTS 893-7113)",
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                },
                {
                    "content": "Groundfish Stock Assessment",
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                {
                    "content": "Dr. Larry Jacobson, Fishery Biologist, par-",
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                {
                    "content": "ticipated in the Pacific Fisheries Management",
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                {
                    "content": "Council (PFMC) Groundfish Management",
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                            "offset": 12260,
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                },
                {
                    "content": "Team's ad hoc review of stock assessments. The",
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                },
                {
                    "content": "review was held at the Tiburon Laboratory,",
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                },
                {
                    "content": "August 7-9. At the meeting Jacobson discussed,",
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                {
                    "content": "with state and NMFS colleagues, a proposed ap-",
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                },
                {
                    "content": "proach for assessment of shortspine thornyhead",
                    "polygon": [
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                },
                {
                    "content": "stocks. He also obtained logbook data for bottom",
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                            "offset": 12528,
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                },
                {
                    "content": "trawl catches landed in California during 1978-",
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                },
                {
                    "content": "1986, and length composition data for shortspine",
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                {
                    "content": "thornyhead landed in California during 1978-",
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                },
                {
                    "content": "1988. His goal is to develop an assessment of the",
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                {
                    "content": "shortspine thornyhead stock for use by the",
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                {
                    "content": "Groundfish Management Team and the PFMC",
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                {
                    "content": "during the 1990 management cycle. (L. Jacobson,",
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                {
                    "content": "FTS 893-7117)",
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                {
                    "content": "Anchovy Management",
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                    "content": "At the PFMC meeting held in San Diego on",
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                    "content": "July 13, Industry Economist Cynthia Thomson,",
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                },
                {
                    "content": "Fishery Biologist Larry Jacobson, and Chairper-",
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                {
                    "content": "son Rick Klingbeil (CDF&G) were appointed to",
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                {
                    "content": "the Anchovy Fisheries Management Plan (FMP)",
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                    "content": "Team. The team has been charged with drafting",
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                {
                    "content": "two amendments to the existing FMP. The first",
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                    "content": "amendment would allow a small reduction fishery",
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                {
                    "content": "under certain circumstances when the estimated",
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                {
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                    "content": "and PFMC during 1990. (L. Jacobson, FTS 893-",
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                    "content": "and consumer surplus, resulting in estimates of",
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                    ]
                },
                {
                    "content": "annual economic value per angler that are 1.5 to",
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                },
                {
                    "content": "4.0 times larger for the Intercept than the BASES",
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                            "offset": 15403,
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                },
                {
                    "content": "respondents. Given that the BASES sample is",
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                },
                {
                    "content": "itself biased toward more avid anglers, these",
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                },
                {
                    "content": "figures are probably conservative estimates of the",
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                },
                {
                    "content": "\"true\" magnitude of the bias in the MRFSS Inter-",
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                },
                {
                    "content": "cept relative to the angling population as a whole.",
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                {
                    "content": "The paper offers the following general con-",
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                },
                {
                    "content": "clusions:",
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                },
                {
                    "content": "1. Estimates of economic value can be significantly",
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                {
                    "content": "affected by the extent of avidity bias in the sample.",
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                {
                    "content": "2. Angler expenditures are not necessarily propor-",
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                {
                    "content": "tional to the number of trips taken. The relationship",
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                {
                    "content": "between expenditures and avidity may be more",
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                {
                    "content": "complicated, either offsetting or exacerbating the",
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                    ]
                },
                {
                    "content": "effect of the avidity bias in the sample.",
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                },
                {
                    "content": "3. The sensitivity of consumer surplus estimates to",
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                },
                {
                    "content": "the avidity bias is affected by the functional form of",
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                    ]
                },
                {
                    "content": "the travel cost model used to generate these es-",
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                    ]
                },
                {
                    "content": "timates.",
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                            "length": 8
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                    ]
                },
                {
                    "content": "The paper will be presented at the International",
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                    ]
                },
                {
                    "content": "Symposium and Workshop on Creel and Angler",
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                    "spans": [
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                            "offset": 16312,
                            "length": 42
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                    ]
                },
                {
                    "content": "Surveys in Fisheries Management in Houston,",
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                            "offset": 16355,
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                },
                {
                    "content": "Texas in March 1990. (C. Thomson, FTS 893-",
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                            "offset": 16399,
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                    ]
                },
                {
                    "content": "7116)",
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                },
                {
                    "content": "SURVEY SYSTEMS",
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                },
                {
                    "content": "DEVELOPMENT AND EVALUATION",
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                },
                {
                    "content": "Cruise Planned to Evaluate Use of ROV For",
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                },
                {
                    "content": "Biomass Estimation",
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                    ]
                },
                {
                    "content": "The Coastal Fisheries Resources Division is",
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                },
                {
                    "content": "planning a jointly-funded cruise with two vessels to",
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                },
                {
                    "content": "develop new survey techniques for estimating the",
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                },
                {
                    "content": "biomass of demersal fisheries resources. The cruise",
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                {
                    "content": "is funded jointly by the Southwest Fisheries Center",
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                },
                {
                    "content": "and National Undersea Research Program (NURP).",
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                    "content": "The cruise will involve two ships, the F/V Gus D",
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                    "content": "chartered by the SWFC and the R/V William A.",
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                    "content": "McGaw chartered by Sachse Engineering As-",
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                    "content": "sociates. Sachse Engineering was awarded the con-",
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                    "content": "tract by NURP to operate a towed vehicle with",
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                    "content": "side-scan sonar, video cameras and a 70 mm survey",
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                    "content": "camera. The vehicle will be towed over depths of",
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                    "content": "100 to 700 fathoms and cameras and sonar will be",
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                    "content": "used to provide a census of bottom fishes. To com-",
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                {
                    "content": "pare abundance estimates provided by the ROV to",
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                    "content": "those provided by conventional trawling, the F/V",
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                    "content": "Gus D, a commercial trawler, will trawl over the",
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                {
                    "content": "same grounds surveyed by the ROV. The ROV will",
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                    "content": "also be towed over untrawlable grounds to deter-",
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                },
                {
                    "content": "mine how the density of groundfish differs between",
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                    "content": "trawlable and untrawlable areas.",
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                    "content": "Cruise dates have been set for September 28 on",
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                    "content": "the McGaw and September 29 on the Gus D.",
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                },
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                    "content": "SWFC personnel participating in the cruise will be",
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                    "content": "Cruise Leader John Butler, Richard Charter, and",
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                },
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                    "content": "Cindy Meyer (SWFC), and Pete Adams (Tiburon",
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                    "content": "Laboratory) on board the McGaw. Cruise Leader",
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                    "content": "Eric Lynn, Ron Dotson, Sue Miller and Wayne",
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                    "content": "MMPA requirement, Wildlife Biologist Al",
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                    "content": "dolphin carcasses to determine whether mechani-",
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                    "content": "cal damage can be done to the targets by under-",
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                    "content": "water seal-bomb explosions. Another study",
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                    "content": "involves the monitoring of set log data for years",
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                    "content": "dolphins potentially exposed to bombs. A third",
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                    "content": "legal foreign-made bombs (over 40 grains of ex-",
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                    "content": "from the detonation site and fired on. After the",
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                    "content": "Observers have been trained in the collection of",
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                    "content": "ear bones (cochlea) and a call has been made to",
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                    "content": "observers at sea to begin cochlea sampling.",
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                    "content": "Samples received by he SWFC will be forwarded to",
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                    "content": "a noted specialist for examination and evaluation. A",
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                    "content": "report of the study should be available in Novem-",
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                    "content": "ber.",
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                    "content": "Results of these and other studies in the",
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                    "content": "SWFC's seal-bomb investigations will be",
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                    "content": "reviewed and finalized at a Seal Bomb Workshop",
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                    "content": "to be held at the SWFC in mid-November. The",
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                    "content": "workshop will be attended by a small group of",
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                {
                    "content": "community, and specialized fields covered in this",
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                    "content": "study. (A. Myrick, FTS 893-7092).",
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                {
                    "content": "FISHERY DEPENDENT",
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                {
                    "content": "ASSESSMENT PROGRAM",
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                {
                    "content": "Report on Blue Whale Distribution in The",
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                    "content": "Eastern Tropical Pacific",
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                {
                    "content": "Dr. Steve Reilly, Fishery Biologist, and Victoria",
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                    "content": "Thayer, Oceanographer, have just completed a",
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                    "content": "manuscript describing the distribution of blue",
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                    "content": "whales in the eastern tropical Pacific Ocean (ETP).",
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                    "content": "The classical, and general, depiction of blue whale",
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                    "content": "distribution includes a seasonal migration to high",
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                    "content": "latitudes where they feed extensively on",
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                    "content": "euphausiids, then to low latitudes where, it is",
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                    "content": "thought, they rarely feed but rather mate and give",
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                    "content": "birth. Foraging has not been considered a major",
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                    "content": "factor in their low latitude distribution. From the",
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                {
                    "content": "patterns of blue whale distribution in the ETP,",
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                    "content": "Reilly and Thayer hypothesize that forage",
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                {
                    "content": "availability may be an important determinant of",
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                    "content": "blue whale habitat in low latitudes.",
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                    "content": "Figure 1 shows the distribution of blue whales",
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                    "content": "in the ETP studied from 211 sightings of 355",
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                    "content": "whales recorded during research vessel sighting",
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                    "content": "surveys and by biologists aboard fishing vessels.",
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                    "content": "All sightings occurred in relatively cool, produc-",
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                    "content": "tive upwelling-modified waters along Baja",
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                    "content": "California, the equator near the Galapagos Islands,",
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                    "content": "the northern coast of South America, and around",
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                    "content": "the Costa Rican Dome (a large, stationary eddy",
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                    "content": "centered at 9°N, 89°W). Occupation of the most",
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                    "content": "productive parts of the ETP, all with relatively",
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                    "content": "large standing stocks of euphausiids, indicates that",
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                    "content": "was at least 185 km search effort per one degree",
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                {
                    "content": "latitude-longitude square.",
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                    "content": "Baja California was occupied seasonally, with",
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                    "content": "a sighting peak coinciding with the spring peak in",
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                    "content": "upwelling and biological production. The Costa",
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                    "content": "Rican Dome and nearby areas on the eastern-most",
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                    "content": "and shallowest end of the prominent ridge in the",
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                    "content": "thermocline undergo very little seasonal variation",
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                    "content": "in both physical and biological processes. This",
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                    "content": "discrete area was occupied year round, suggesting",
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                    "content": "either a resident population or that both northern",
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                {
                    "content": "and southern hemisphere whales visit, with tem-",
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                    "content": "poral overlap and potential for interbreeding. The",
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                    "content": "modal group size was one for all areas and seasons,",
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                {
                    "content": "but the frequency of groups with two or more",
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                    "content": "whales was significantly higher in sightings made",
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                },
                {
                    "content": "near the Galapagos Islands and coast of South",
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                },
                {
                    "content": "America. (S. Reilly, FTS 893-7164).",
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                },
                {
                    "content": "HONOLULU",
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                {
                    "content": "LABORATORY",
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                },
                {
                    "content": "Honolulu, Hawaii",
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                    "content": "U.S .- Japan Cooperative Seminar on Sebastes",
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                    "content": "Scientists from the United States, Japan, and",
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                    "content": "Canada met in Honolulu, June 26-30, 1989, for a",
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                    "content": "cooperative seminar, Rockfishes of the Genus",
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                    "content": "Sebastes: Their Reproduction and Early Life His-",
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                {
                    "content": "tory. A major goal of the seminar was to provide",
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                    "content": "U.S. and Japanese scientists the opportunity to",
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                {
                    "content": "share their knowledge and examine alternative ap-",
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                    "content": "proaches to the study of Sebastes. The seminar,",
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                    "content": "which was held at the East-West Center on the",
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                    "content": "University of Hawaii-Manoa campus, was jointly",
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                    "content": "funded by the International Programs Division of",
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                    "content": "the National Science Foundation (NSF) and the",
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                    "content": "Japan Society for the Promotion of Science. The",
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                    "content": "organizers of the seminar were George W. Boeh-",
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                    "content": "lert, Director of the Honolulu Laboratory, and Juro",
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                    "content": "Yamada from the University of Hokkaido,",
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                    "content": "Hakodate, Japan.",
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                    "content": "In both the United States and Japan, the primary",
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                    "content": "impetus for research on Sebastes has been its impor-",
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                    "content": "tance to marine fisheries, but the secondary im-",
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                    "content": "petuses have differed: Japan has focused on",
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                    "content": "aquaculture potential, and the United States on basic",
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                    "content": "ecology pertinent to fisheries. As a result, the two",
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                    "content": "countries use different approaches to the study of",
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                    "content": "reproductive biology and early life history of Sebas-",
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                    "content": "tes. For example, Japan has developed an energetic",
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                    "content": "aquaculture industry to replenish the coastal marine",
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                    "content": "resources, while the United States concentrated on",
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                    "content": "natural production and management of stocks.",
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                    "content": "A",
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                    "content": "N. America",
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                    "content": "40",
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                    "content": "Japan ZZZ",
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                    "content": "Percentage",
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                    "content": "30-",
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                    "content": "20 +",
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                    "content": "10-",
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                },
                {
                    "content": "(808) 943-1211)",
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                },
                {
                    "content": "INSULAR RESOURCES",
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                },
                {
                    "content": "INVESTIGATION",
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                    "spans": [
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                },
                {
                    "content": "NOAA-UH Tropical Stock Assessment",
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                },
                {
                    "content": "Workshop Held in Honolulu",
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                    "spans": [
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                {
                    "content": "The Tropical Assessment Workshop was held in",
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                            "offset": 29132,
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                    ]
                },
                {
                    "content": "Honolulu, July 5-26, 1989, to assist fishery scien-",
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                    ]
                },
                {
                    "content": "tists from selected Pacific island countries (Figure",
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                {
                    "content": "3) in analyzing their research and commercial",
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                {
                    "content": "Figure 3. Participants of the Tropical Assessment",
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                },
                {
                    "content": "Workshop. Front row (left to right): Paul Lokani,",
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                },
                {
                    "content": "Donald Kobayashi, Helen Pili, Gideon Tiroba, Ned",
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                },
                {
                    "content": "Howard, M. Kimberly Smith, Apisai Sesewa, and",
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                {
                    "content": "Richard Shomura. Second row: Albert Carlot,",
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                    ]
                },
                {
                    "content": "Gianandar Nath, Ronald Benco, Taniela Sua,",
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                    ]
                },
                {
                    "content": "Tevita Latu, Esperance Cillaurren, Jeffrey",
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                    ]
                },
                {
                    "content": "Polovina, Paul Dalzell, and Sosaia Tulua.",
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                    ]
                },
                {
                    "content": "catch and effort data on deepwater snappers. The",
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                {
                    "content": "workshop was convened by NOAA Fisheries and",
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                    ]
                },
                {
                    "content": "the University of Hawaii's School of Ocean and",
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                {
                    "content": "Earth Science and Technology, with funding",
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                },
                {
                    "content": "provided by NOAA and the U.S. Agency for Inter-",
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                {
                    "content": "national Development. Workshop participants",
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                {
                    "content": "were from the Cook Islands, Fiji, Kingdom of",
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                    ]
                },
                {
                    "content": "Tonga, Papua New Guinea, Solomon Islands,",
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                    ]
                },
                {
                    "content": "Tuvalu, Vanuatu, and Western Samoa. The ul-",
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                    ]
                },
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                    "content": "timate objective of the analyses was to estimate the",
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                {
                    "content": "maximum sustainable yield (MSY) and the fishing",
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                    "content": "effort that achieves this yield for the snapper",
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                    "content": "resources in each country. The analytical methods",
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                    "content": "used during the workshop were developed and",
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                {
                    "content": "adapted for use with deepwater snappers by",
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                {
                    "content": "Honolulu Laboratory staff during the past 10 years.",
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                },
                {
                    "content": "First, participants used depletion analysis to",
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                    ]
                },
                {
                    "content": "estimate the unexploited exploitable biomass (Bo",
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                },
                {
                    "content": "in metric tons (t)) per nautical mile (nmi) of 200 m",
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                {
                    "content": "isobath from the catch rates and catches at 18",
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                    "content": "heavily fished locations (Table 1). Except for a few",
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                {
                    "content": "outliers, most estimates of Bo cluster around the",
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                },
                {
                    "content": "median values of 2.7 t/nmi for seamounts and 0.7",
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                {
                    "content": "t/nmi for islands.",
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                    "content": "Table 1. Length of 200 m isobaths and biomass per",
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                    ]
                },
                {
                    "content": "nautical mile (Bo/nmi) of 200 m isobath for all",
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                {
                    "content": "depletion analyses.",
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                    "content": "Nautical Unexploited",
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                },
                {
                    "content": "Location",
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                {
                    "content": "mile",
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                    "content": "Bo/nmi",
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                {
                    "content": "Seamounts",
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                            "length": 9
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                },
                {
                    "content": "Kavieng",
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                    "spans": [
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                            "length": 7
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                    ]
                },
                {
                    "content": "0.25",
                    "polygon": [
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                        4.8247,
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                    "spans": [
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                            "length": 4
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                    ]
                },
                {
                    "content": "3.30",
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                    "spans": [
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                    ]
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                {
                    "content": "1004",
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                    "spans": [
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                {
                    "content": "1.20",
                    "polygon": [
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                {
                    "content": "8.50",
                    "polygon": [
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                    "spans": [
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                },
                {
                    "content": "Pathfinder",
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                {
                    "content": "3.00",
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                    "content": "2.00",
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                {
                    "content": "Tavenui",
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                    ],
                    "spans": [
                        {
                            "offset": 31030,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "3.10",
                    "polygon": [
                        6.3469,
                        5.1166,
                        6.5719,
                        5.1166,
                        6.5719,
                        5.1932,
                        6.3469,
                        5.198
                    ],
                    "spans": [
                        {
                            "offset": 31038,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "2.50",
                    "polygon": [
                        7.1367,
                        5.1166,
                        7.376,
                        5.1214,
                        7.376,
                        5.198,
                        7.1367,
                        5.2028
                    ],
                    "spans": [
                        {
                            "offset": 31043,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Napuka",
                    "polygon": [
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                        5.2028,
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                    ],
                    "spans": [
                        {
                            "offset": 31048,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "4.20",
                    "polygon": [
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                        6.5767,
                        5.2123,
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                    ],
                    "spans": [
                        {
                            "offset": 31055,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "3.80",
                    "polygon": [
                        7.1367,
                        5.2123,
                        7.3712,
                        5.2171,
                        7.3712,
                        5.2937,
                        7.1367,
                        5.2937
                    ],
                    "spans": [
                        {
                            "offset": 31060,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "801",
                    "polygon": [
                        4.7434,
                        5.2985,
                        4.9253,
                        5.3033,
                        4.9158,
                        5.3799,
                        4.7434,
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                    ],
                    "spans": [
                        {
                            "offset": 31065,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "5.00",
                    "polygon": [
                        6.3469,
                        5.3081,
                        6.5719,
                        5.3081,
                        6.5719,
                        5.3847,
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                    ],
                    "spans": [
                        {
                            "offset": 31069,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "2.70",
                    "polygon": [
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                        5.3081,
                        7.376,
                        5.3129,
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                        5.3894,
                        7.1415,
                        5.3894
                    ],
                    "spans": [
                        {
                            "offset": 31074,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "901",
                    "polygon": [
                        4.7434,
                        5.3942,
                        4.911,
                        5.399,
                        4.911,
                        5.4708,
                        4.7434,
                        5.4708
                    ],
                    "spans": [
                        {
                            "offset": 31079,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "6.80",
                    "polygon": [
                        6.3469,
                        5.4038,
                        6.5767,
                        5.4086,
                        6.5767,
                        5.4804,
                        6.3469,
                        5.4804
                    ],
                    "spans": [
                        {
                            "offset": 31083,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "2.70",
                    "polygon": [
                        7.1367,
                        5.4038,
                        7.3712,
                        5.4086,
                        7.3665,
                        5.4804,
                        7.1367,
                        5.4852
                    ],
                    "spans": [
                        {
                            "offset": 31088,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Savusavu",
                    "polygon": [
                        4.7387,
                        5.49,
                        5.2077,
                        5.4947,
                        5.2077,
                        5.5713,
                        4.7387,
                        5.5713
                    ],
                    "spans": [
                        {
                            "offset": 31093,
                            "length": 8
                        }
                    ]
                },
                {
                    "content": "7.90",
                    "polygon": [
                        6.3469,
                        5.4995,
                        6.5767,
                        5.5043,
                        6.5815,
                        5.5761,
                        6.3469,
                        5.5761
                    ],
                    "spans": [
                        {
                            "offset": 31102,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1.40",
                    "polygon": [
                        7.1463,
                        5.4995,
                        7.376,
                        5.5043,
                        7.376,
                        5.5809,
                        7.1463,
                        5.5809
                    ],
                    "spans": [
                        {
                            "offset": 31107,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Grid 147",
                    "polygon": [
                        4.7387,
                        5.5857,
                        5.2029,
                        5.5857,
                        5.2029,
                        5.6671,
                        4.7387,
                        5.6671
                    ],
                    "spans": [
                        {
                            "offset": 31112,
                            "length": 8
                        }
                    ]
                },
                {
                    "content": "13.10",
                    "polygon": [
                        6.2895,
                        5.5905,
                        6.5767,
                        5.5953,
                        6.5767,
                        5.6766,
                        6.2895,
                        5.6766
                    ],
                    "spans": [
                        {
                            "offset": 31121,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "7.00",
                    "polygon": [
                        7.1415,
                        5.5953,
                        7.3712,
                        5.6,
                        7.3712,
                        5.6766,
                        7.1367,
                        5.6766
                    ],
                    "spans": [
                        {
                            "offset": 31127,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Kadavu",
                    "polygon": [
                        4.7339,
                        5.6814,
                        5.0976,
                        5.6814,
                        5.0976,
                        5.7628,
                        4.7339,
                        5.758
                    ],
                    "spans": [
                        {
                            "offset": 31132,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "18.00",
                    "polygon": [
                        6.2847,
                        5.6862,
                        6.5719,
                        5.691,
                        6.5719,
                        5.7676,
                        6.2847,
                        5.7676
                    ],
                    "spans": [
                        {
                            "offset": 31139,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1.50",
                    "polygon": [
                        7.1463,
                        5.6958,
                        7.3712,
                        5.6958,
                        7.3712,
                        5.7724,
                        7.1463,
                        5.7724
                    ],
                    "spans": [
                        {
                            "offset": 31145,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "903",
                    "polygon": [
                        4.7387,
                        5.7771,
                        4.911,
                        5.7819,
                        4.911,
                        5.8537,
                        4.7387,
                        5.8489
                    ],
                    "spans": [
                        {
                            "offset": 31150,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "35.00",
                    "polygon": [
                        6.2799,
                        5.7867,
                        6.5767,
                        5.7819,
                        6.5767,
                        5.8633,
                        6.2799,
                        5.8681
                    ],
                    "spans": [
                        {
                            "offset": 31154,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "2.40",
                    "polygon": [
                        7.1367,
                        5.7915,
                        7.3665,
                        5.7915,
                        7.3665,
                        5.8681,
                        7.1367,
                        5.8681
                    ],
                    "spans": [
                        {
                            "offset": 31160,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Median = 2.70",
                    "polygon": [
                        6.6293,
                        5.8777,
                        7.3712,
                        5.8872,
                        7.3712,
                        5.9686,
                        6.6293,
                        5.959
                    ],
                    "spans": [
                        {
                            "offset": 31165,
                            "length": 13
                        }
                    ]
                },
                {
                    "content": "Island",
                    "polygon": [
                        4.6238,
                        5.9638,
                        4.9732,
                        5.9686,
                        4.9732,
                        6.05,
                        4.6238,
                        6.05
                    ],
                    "spans": [
                        {
                            "offset": 31179,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "Paama",
                    "polygon": [
                        4.7434,
                        6.0595,
                        5.0306,
                        6.0691,
                        5.0306,
                        6.1505,
                        4.7387,
                        6.1409
                    ],
                    "spans": [
                        {
                            "offset": 31186,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "28.00",
                    "polygon": [
                        6.2847,
                        6.0739,
                        6.5719,
                        6.0739,
                        6.5719,
                        6.1553,
                        6.2847,
                        6.1553
                    ],
                    "spans": [
                        {
                            "offset": 31192,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "2.30",
                    "polygon": [
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                        6.0787,
                        7.3712,
                        6.0787,
                        7.3665,
                        6.1553,
                        7.1367,
                        6.16
                    ],
                    "spans": [
                        {
                            "offset": 31198,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Schoutten Islands",
                    "polygon": [
                        4.7387,
                        6.16,
                        5.7199,
                        6.1648,
                        5.7199,
                        6.2462,
                        4.7387,
                        6.2414
                    ],
                    "spans": [
                        {
                            "offset": 31203,
                            "length": 17
                        }
                    ]
                },
                {
                    "content": "33.00",
                    "polygon": [
                        6.2847,
                        6.1696,
                        6.5767,
                        6.1696,
                        6.5767,
                        6.251,
                        6.2847,
                        6.2462
                    ],
                    "spans": [
                        {
                            "offset": 31221,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "0.20",
                    "polygon": [
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                        6.1744,
                        7.376,
                        6.1792,
                        7.376,
                        6.251,
                        7.1511,
                        6.2558
                    ],
                    "spans": [
                        {
                            "offset": 31227,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Moon Reef to Ellington",
                    "polygon": [
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                        6.0071,
                        6.2558,
                        6.0023,
                        6.3515,
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                    ],
                    "spans": [
                        {
                            "offset": 31232,
                            "length": 22
                        }
                    ]
                },
                {
                    "content": "40.00",
                    "polygon": [
                        6.2847,
                        6.2653,
                        6.5767,
                        6.2653,
                        6.5719,
                        6.3467,
                        6.2847,
                        6.3419
                    ],
                    "spans": [
                        {
                            "offset": 31255,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "0.60",
                    "polygon": [
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                        6.2701,
                        7.376,
                        6.2701,
                        7.3712,
                        6.3419,
                        7.1463,
                        6.3467
                    ],
                    "spans": [
                        {
                            "offset": 31261,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Grid 482",
                    "polygon": [
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                        6.3467,
                        5.2029,
                        6.3515,
                        5.2029,
                        6.4329,
                        4.7387,
                        6.4329
                    ],
                    "spans": [
                        {
                            "offset": 31266,
                            "length": 8
                        }
                    ]
                },
                {
                    "content": "40.00",
                    "polygon": [
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                        6.3563,
                        6.5767,
                        6.3611,
                        6.5767,
                        6.4424,
                        6.2847,
                        6.4377
                    ],
                    "spans": [
                        {
                            "offset": 31275,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "0.55",
                    "polygon": [
                        7.1463,
                        6.3611,
                        7.3712,
                        6.3659,
                        7.3712,
                        6.4424,
                        7.1463,
                        6.4424
                    ],
                    "spans": [
                        {
                            "offset": 31281,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Ovalau to Moon Reef",
                    "polygon": [
                        4.7387,
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                        5.8443,
                        6.4472,
                        5.8443,
                        6.5334,
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                    ],
                    "spans": [
                        {
                            "offset": 31286,
                            "length": 19
                        }
                    ]
                },
                {
                    "content": "42.00",
                    "polygon": [
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                        6.4568,
                        6.5767,
                        6.4568,
                        6.5767,
                        6.5334,
                        6.2799,
                        6.5334
                    ],
                    "spans": [
                        {
                            "offset": 31306,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "0.70",
                    "polygon": [
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                        6.4568,
                        7.3712,
                        6.4664,
                        7.3617,
                        6.5382,
                        7.1463,
                        6.5382
                    ],
                    "spans": [
                        {
                            "offset": 31312,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Nasilai to Ovalau",
                    "polygon": [
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                        5.7247,
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                        5.7199,
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                        6.6243
                    ],
                    "spans": [
                        {
                            "offset": 31317,
                            "length": 17
                        }
                    ]
                },
                {
                    "content": "50.00",
                    "polygon": [
                        6.2751,
                        6.5477,
                        6.5767,
                        6.5477,
                        6.5767,
                        6.6339,
                        6.2751,
                        6.6291
                    ],
                    "spans": [
                        {
                            "offset": 31335,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "0.70",
                    "polygon": [
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                        6.5525,
                        7.3712,
                        6.5573,
                        7.3712,
                        6.6339,
                        7.1319,
                        6.6339
                    ],
                    "spans": [
                        {
                            "offset": 31341,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Ambae",
                    "polygon": [
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                        6.6387,
                        5.0402,
                        6.6387,
                        5.0402,
                        6.7248,
                        4.7339,
                        6.7201
                    ],
                    "spans": [
                        {
                            "offset": 31346,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "62.00",
                    "polygon": [
                        6.2847,
                        6.6483,
                        6.5767,
                        6.6483,
                        6.5767,
                        6.7248,
                        6.2847,
                        6.7296
                    ],
                    "spans": [
                        {
                            "offset": 31352,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "0.70",
                    "polygon": [
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                        6.6483,
                        7.376,
                        6.653,
                        7.3712,
                        6.7296,
                        7.1319,
                        6.7296
                    ],
                    "spans": [
                        {
                            "offset": 31358,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Median = 0.70",
                    "polygon": [
                        6.615,
                        6.7392,
                        7.376,
                        6.744,
                        7.376,
                        6.8301,
                        6.615,
                        6.8254
                    ],
                    "spans": [
                        {
                            "offset": 31363,
                            "length": 13
                        }
                    ]
                },
                {
                    "content": "Since the bottomfish fisheries are just begin-",
                    "polygon": [
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                        7.0695,
                        7.467,
                        7.0886,
                        7.467,
                        7.2418,
                        4.7913,
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                    ],
                    "spans": [
                        {
                            "offset": 31377,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "ning to be exploited, no time series of catch and",
                    "polygon": [
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                        7.4718,
                        7.2466,
                        7.4718,
                        7.4045,
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                    ],
                    "spans": [
                        {
                            "offset": 31424,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "effort data is available for the production models.",
                    "polygon": [
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                        7.467,
                        7.4189,
                        7.467,
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                    ],
                    "spans": [
                        {
                            "offset": 31474,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "Thus, workshop participants estimated MSY as a",
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                    ],
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                        {
                            "offset": 31526,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "fraction of Bo by using Beverton-Holt, Gulland,",
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                        7.7539,
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                        4.6238,
                        7.9023
                    ],
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                        {
                            "offset": 31573,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "and Pauly's methods: ratios of MSY to Bo were",
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                        7.9166,
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                            "offset": 31621,
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                    ]
                },
                {
                    "content": "about 10-30% (Table 2). For natural mortality (W)",
                    "polygon": [
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                    ]
                },
                {
                    "content": "equaling 0.25, a lower bound of MSY estimated at",
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                        }
                    ]
                },
                {
                    "content": "9% Bo was obtained. For the Beverton-Holt",
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                    ]
                },
                {
                    "content": "method with M equaling 0.5 and Pauly's method,",
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                            "offset": 31808,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "which depends only on fish weight, MSY was",
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                            "length": 42
                        }
                    ]
                },
                {
                    "content": "estimated at about 30% Bo. Therefore, the range",
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                        }
                    ]
                },
                {
                    "content": "of 10 to 30% Bo includes the true value of MSY.",
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                    ],
                    "spans": [
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                            "offset": 31946,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "Estimates of MSY for each Pacific island were",
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                    "spans": [
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                        0.8865,
                        1.2987
                    ],
                    "spans": [
                        {
                            "offset": 32186,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "land, Beverton-Holt, and Pauly).",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32236,
                            "length": 32
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                    ]
                },
                {
                    "content": "MSY/BO",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32269,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "M=0.25",
                    "polygon": [
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                        2.9711,
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                    "spans": [
                        {
                            "offset": 32276,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "MSY/BO",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32283,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "M=0.5",
                    "polygon": [
                        3.1867,
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                        1.7492,
                        3.5509,
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                        3.1867,
                        1.8451
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                    "spans": [
                        {
                            "offset": 32290,
                            "length": 5
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                    ]
                },
                {
                    "content": "Gulland (0.5 m)",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32296,
                            "length": 15
                        }
                    ]
                },
                {
                    "content": "0.13",
                    "polygon": [
                        2.6404,
                        2.0703,
                        2.8944,
                        2.0751,
                        2.8896,
                        2.1614,
                        2.6404,
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                    "spans": [
                        {
                            "offset": 32312,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "0.25",
                    "polygon": [
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                        3.5317,
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                        2.1566,
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                    "spans": [
                        {
                            "offset": 32317,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Beverton-Holt when m/k=2",
                    "polygon": [
                        0.8386,
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                        2.3481,
                        2.1805,
                        2.3481,
                        2.2764,
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                    "spans": [
                        {
                            "offset": 32322,
                            "length": 24
                        }
                    ]
                },
                {
                    "content": "Age at recruitment",
                    "polygon": [
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                        2.1133,
                        2.2812,
                        2.1133,
                        2.3818,
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                    "spans": [
                        {
                            "offset": 32347,
                            "length": 18
                        }
                    ]
                },
                {
                    "content": "3 years",
                    "polygon": [
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                        2.401,
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                    "spans": [
                        {
                            "offset": 32366,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "0.06",
                    "polygon": [
                        2.65,
                        2.3914,
                        2.8992,
                        2.3914,
                        2.8992,
                        2.4729,
                        2.65,
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                    "spans": [
                        {
                            "offset": 32374,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "0.18",
                    "polygon": [
                        3.2682,
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                        2.3818,
                        3.5269,
                        2.4681,
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                    "spans": [
                        {
                            "offset": 32379,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "4 years",
                    "polygon": [
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                        2.5064,
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                    "spans": [
                        {
                            "offset": 32384,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "0.09",
                    "polygon": [
                        2.65,
                        2.4968,
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                        2.4968,
                        2.8992,
                        2.5783,
                        2.65,
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                    "spans": [
                        {
                            "offset": 32392,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "0.28",
                    "polygon": [
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                        3.5269,
                        2.4873,
                        3.5221,
                        2.5735,
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                    "spans": [
                        {
                            "offset": 32397,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Pauly (2.3 w) -0.26",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32402,
                            "length": 19
                        }
                    ]
                },
                {
                    "content": "Marianas",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32422,
                            "length": 8
                        }
                    ]
                },
                {
                    "content": "0.34",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32431,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Papua New Guinea",
                    "polygon": [
                        0.8386,
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                        1.8641,
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                    "spans": [
                        {
                            "offset": 32436,
                            "length": 16
                        }
                    ]
                },
                {
                    "content": "0.28",
                    "polygon": [
                        2.65,
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                        2.904,
                        2.8083,
                        2.904,
                        2.8898,
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                    "spans": [
                        {
                            "offset": 32453,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Western Samoa",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32458,
                            "length": 13
                        }
                    ]
                },
                {
                    "content": "0.27",
                    "polygon": [
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                        2.909,
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                    "spans": [
                        {
                            "offset": 32472,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Vanuatu",
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                    "spans": [
                        {
                            "offset": 32477,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "0.32",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32485,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Tonga",
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                    "spans": [
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                            "offset": 32490,
                            "length": 5
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                    ]
                },
                {
                    "content": "0.28",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32496,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "length of the 200 m isobath (Table 3). For Tonga,",
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                    "spans": [
                        {
                            "offset": 32501,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "current landings from the seamounts are almost",
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                    "spans": [
                        {
                            "offset": 32551,
                            "length": 46
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                    ]
                },
                {
                    "content": "twice the upper bound of estimated MSY, and",
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                        3.618,
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                    "spans": [
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                            "offset": 32598,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "fishing mortality (F) is about equal to M. This",
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                            "offset": 32642,
                            "length": 47
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                    ]
                },
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                    "content": "suggests that fishing effort in Tonga is at the level",
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                    "spans": [
                        {
                            "offset": 32690,
                            "length": 53
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                    ]
                },
                {
                    "content": "that produces the MSY, and once the seamount",
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                            "length": 44
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                    ]
                },
                {
                    "content": "fishery reaches its equilibrium, catches and catch",
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                    "spans": [
                        {
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                            "length": 50
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                    ]
                },
                {
                    "content": "per unit effort will be substantially lower.",
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                            "length": 44
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                    ]
                },
                {
                    "content": "Table 3. Estimates of maximum sustainable yield",
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                    ]
                },
                {
                    "content": "(MSY), landings, and fishing mortality (F) for",
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                    "spans": [
                        {
                            "offset": 32933,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "deepwater snappers at selected Pacific island",
                    "polygon": [
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                        5.6694,
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                    "spans": [
                        {
                            "offset": 32980,
                            "length": 45
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                    ]
                },
                {
                    "content": "countries in 1988 (t = metric tons).",
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                    "spans": [
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                            "offset": 33026,
                            "length": 36
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                    ]
                },
                {
                    "content": "Country",
                    "polygon": [
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                        6.1918,
                        1.5478,
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                    "spans": [
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                            "offset": 33063,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "MSY",
                    "polygon": [
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                    "spans": [
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                            "offset": 33071,
                            "length": 3
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                    ]
                },
                {
                    "content": "(t/year)",
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                        6.1774,
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                    "spans": [
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                            "length": 8
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                    ]
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                {
                    "content": "Landings",
                    "polygon": [
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                            "length": 8
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                    ]
                },
                {
                    "content": "(t/year)",
                    "polygon": [
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                        6.1774,
                        3.1627,
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                        2.7219,
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                    "spans": [
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                            "length": 8
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                    ]
                },
                {
                    "content": "F/year",
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                        6.1726,
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                        3.2538,
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                    "spans": [
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                            "offset": 33102,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "Tonga",
                    "polygon": [
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                        1.0495,
                        6.556,
                        0.7763,
                        6.556
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                    "spans": [
                        {
                            "offset": 33109,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "77-222",
                    "polygon": [
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                        2.5589,
                        6.4601,
                        2.5589,
                        6.5368,
                        2.2043,
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                    "spans": [
                        {
                            "offset": 33115,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "391",
                    "polygon": [
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                        3.0477,
                        6.4601,
                        3.0477,
                        6.532,
                        2.8752,
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                    "spans": [
                        {
                            "offset": 33122,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "0.38",
                    "polygon": [
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                        6.4506,
                        3.5509,
                        6.5272,
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                    "spans": [
                        {
                            "offset": 33126,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Western Samoa",
                    "polygon": [
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                        1.5047,
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                        1.5047,
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                    "spans": [
                        {
                            "offset": 33131,
                            "length": 13
                        }
                    ]
                },
                {
                    "content": "17-50",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33145,
                            "length": 5
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                    ]
                },
                {
                    "content": "25",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33151,
                            "length": 2
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                    ]
                },
                {
                    "content": "__ a",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33154,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Fiji",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33159,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "70-200",
                    "polygon": [
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                        2.5589,
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                    "spans": [
                        {
                            "offset": 33164,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "300",
                    "polygon": [
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                        3.0621,
                        6.6423,
                        3.0621,
                        6.7141,
                        2.8752,
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                    "spans": [
                        {
                            "offset": 33171,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "0.12",
                    "polygon": [
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                        3.5605,
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                    "spans": [
                        {
                            "offset": 33175,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Fishing area of 500",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33180,
                            "length": 19
                        }
                    ]
                },
                {
                    "content": "nmi of 200 m habitat",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33200,
                            "length": 20
                        }
                    ]
                },
                {
                    "content": "now being fished",
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                    "spans": [
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                            "offset": 33221,
                            "length": 16
                        }
                    ]
                },
                {
                    "content": "Fiji",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33238,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "426-1,280",
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                        {
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                            "length": 9
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                    ]
                },
                {
                    "content": "0",
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                            "length": 1
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                    ]
                },
                {
                    "content": "0",
                    "polygon": [
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                    ]
                },
                {
                    "content": "Potential fishing",
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                    ]
                },
                {
                    "content": "area of 3,000 nmi",
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                    ]
                },
                {
                    "content": "Papua New Guinea",
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                    "spans": [
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                            "offset": 33293,
                            "length": 16
                        }
                    ]
                },
                {
                    "content": "170-270",
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                    "spans": [
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                            "offset": 33310,
                            "length": 7
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                    ]
                },
                {
                    "content": "0",
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                            "offset": 33318,
                            "length": 1
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                    ]
                },
                {
                    "content": "0",
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                            "length": 1
                        }
                    ]
                },
                {
                    "content": "Vanuatu",
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                            "length": 7
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                    ]
                },
                {
                    "content": "113-190",
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                    ]
                },
                {
                    "content": "40",
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                    ]
                },
                {
                    "content": "0.07",
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                    "spans": [
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                            "offset": 33341,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "aNo estimate of q was available to estimate F.",
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                    ]
                },
                {
                    "content": "In western Samoa, the deepwater snappers are",
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                    ]
                },
                {
                    "content": "already close to MSY although some increase is",
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                    ]
                },
                {
                    "content": "possible, and in Fiji, the fishery is using only",
                    "polygon": [
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                        }
                    ]
                },
                {
                    "content": "about 20% of the estimated 3,000 nmi of 200 m",
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                    ]
                },
                {
                    "content": "isobath and thus has the potential to increase",
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                    ]
                },
                {
                    "content": "catches if this unfished habitat has populations of",
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                    ]
                },
                {
                    "content": "deepwater snappers. However, if the fishery",
                    "polygon": [
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                    ]
                },
                {
                    "content": "remains only within the habitat currently fished,",
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                    ]
                },
                {
                    "content": "catches will decline, perhaps by 50%. In Fiji, the",
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                    ]
                },
                {
                    "content": "current level of fishing effort may be a little lower",
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                    ]
                },
                {
                    "content": "than the level that produces MSY. Papua New",
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                },
                {
                    "content": "Guinea has no appreciable landings of deepwater",
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                    ]
                },
                {
                    "content": "snappers, but a potential exists with MSY in the",
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                },
                {
                    "content": "range of 170-270 t/year. Vanuatu's landings repre-",
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                    ]
                },
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                    "content": "sent only one-third to one-fifth of the potential",
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                },
                {
                    "content": "MSY, as indicated by the current landings and level",
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                    ]
                },
                {
                    "content": "of F, so the potential exists for greater landings.",
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                    ]
                },
                {
                    "content": "The Honolulu Laboratory staff that provided",
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                    ]
                },
                {
                    "content": "assistance to this workshop included: Jeffrey J.",
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                    ]
                },
                {
                    "content": "Polovina, Program Manager of the Insular",
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                    ]
                },
                {
                    "content": "Resources Investigation; David A. Somerton,",
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                    ]
                },
                {
                    "content": "Leader of the Insular Stock Assessment Program;",
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                },
                {
                    "content": "NRC-NOAA Postdoctoral Fellow M. Kimberly",
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                    ]
                },
                {
                    "content": "Smith; Computer Programmers Ronald A. Benco",
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                    ]
                },
                {
                    "content": "and Donald Kobayashi; and Biological Tech-",
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                    "spans": [
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                    ]
                },
                {
                    "content": "nician Happy A. Williams. The results of these",
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                    ]
                },
                {
                    "content": "analyses were presented in reports written by the",
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                    "spans": [
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                            "offset": 34625,
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                    ]
                },
                {
                    "content": "participants and will be published in the NOAA",
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                },
                {
                    "content": "Technical Memorandum Series. (J. Polovina",
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                    ]
                },
                {
                    "content": "(808) 943-1218)",
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                    ]
                },
                {
                    "content": "PELAGIC RESOURCES",
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                    ]
                },
                {
                    "content": "INVESTIGATION",
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                    "spans": [
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                            "offset": 34798,
                            "length": 13
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                    ]
                },
                {
                    "content": "Pacific Blue Marlin Tracked Successfully",
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                    "spans": [
                        {
                            "offset": 34812,
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                        }
                    ]
                },
                {
                    "content": "Two Pacific blue marlin, Makaira mazara, car-",
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                    "spans": [
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                            "offset": 34853,
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                    ]
                },
                {
                    "content": "rying depth-sensitive, ultrasonic transmitters were",
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                            "offset": 34899,
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                    ]
                },
                {
                    "content": "tracked successfully by Fishery Biologist Richard",
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                },
                {
                    "content": "W. Brill of the Honolulu Laboratory, Kim Holland",
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                    ]
                },
                {
                    "content": "of the University of Hawaii's Institute of Marine",
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                },
                {
                    "content": "Biology, and NOAA Corps Officer LTJG Scott",
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                    "spans": [
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                            "offset": 35100,
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                    ]
                },
                {
                    "content": "Sullivan off the Kona Coast, island of Hawaii, July",
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                            "offset": 35143,
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                    ]
                },
                {
                    "content": "28 to August 6, 1989. The fish were caught and",
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                    ]
                },
                {
                    "content": "released by anglers participating in the 31st Annual",
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                },
                {
                    "content": "Hawaiian International Billfish Tournament in",
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                },
                {
                    "content": "Kailua-Kona.",
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                },
                {
                    "content": "Both fish behaved remarkably similar to three",
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                    ]
                },
                {
                    "content": "marlin tracked in the summer of 1988, although",
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                    "content": "they were captured and released about 10 nmi",
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                    "content": "south of last year's capture site. After release, the",
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                    "content": "two fish moved directly offshore and along parallel",
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                    "content": "courses for approximately 10 nmi. This offshore",
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                    "content": "movement appears to be a stereotypical response of",
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                    "content": "marlin to the stress of capture. Both fish eventually",
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                    "content": "turned north and proceeded in that direction for the",
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                {
                    "content": "duration of the tracking. With respect to swimming",
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                    "content": "depth, both fish moved up and down only within the",
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                    "content": "mixed layer (i.e., the 50-100 m layer of uniform water",
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                {
                    "content": "temperature). Further analysis of the data is",
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                },
                {
                    "content": "proceeding. (R. Brill (808) 943-1234)",
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                            "length": 46
                        }
                    ]
                },
                {
                    "content": "unusual rates of pH change with temperature pre-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36712,
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                        }
                    ]
                },
                {
                    "content": "viously reported in isolated tuna blood. Tunas",
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                    "spans": [
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                    ]
                },
                {
                    "content": "often subject themselves to rapid temperature",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36808,
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                        }
                    ]
                },
                {
                    "content": "changes during vertical movements, which are a",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36854,
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                        }
                    ]
                },
                {
                    "content": "regular part of their behavior. Also, because they",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36901,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "have countercurrent, vascular heat exchangers,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36952,
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                        }
                    ]
                },
                {
                    "content": "their muscle temperatures may be as much as 10°-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36999,
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                        }
                    ]
                },
                {
                    "content": "15℃ above ambient. Tuna blood is therefore",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 37048,
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                        }
                    ]
                },
                {
                    "content": "regularly subjected to rapid temperature changes",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 37091,
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                        }
                    ]
                },
                {
                    "content": "in open (i.e., in the gills) and closed systems (i.e.,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 37140,
                            "length": 54
                        }
                    ]
                },
                {
                    "content": "in the vascular heat exchangers). Understanding",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 37195,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "how tunas regulate their blood acid-base balance",
                    "polygon": [
                        1.507,
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                        5.483,
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                    "spans": [
                        {
                            "offset": 37243,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "is therefore critical to understanding their habitat",
                    "polygon": [
                        1.507,
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                    ],
                    "spans": [
                        {
                            "offset": 37292,
                            "length": 52
                        }
                    ]
                },
                {
                    "content": "requirements and temperature tolerances.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 37345,
                            "length": 40
                        }
                    ]
                },
                {
                    "content": "The effects of temperature on the acid-base",
                    "polygon": [
                        1.6744,
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                    ],
                    "spans": [
                        {
                            "offset": 37386,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "balance of the blood of skipjack tuna, Katsuwonus",
                    "polygon": [
                        1.5022,
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                        4.3535,
                        6.1619,
                        4.3535,
                        6.3148,
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                    ],
                    "spans": [
                        {
                            "offset": 37430,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "pelamis, were first investigated in vitro by S. F.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 37480,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "Perry and others, who found similar rates of pH",
                    "polygon": [
                        1.4974,
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                        4.3487,
                        6.4965,
                        4.3487,
                        6.659,
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                    ],
                    "spans": [
                        {
                            "offset": 37531,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "change with temperature in open (i.e., constant",
                    "polygon": [
                        1.4974,
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                    ],
                    "spans": [
                        {
                            "offset": 37579,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "pCO2) and closed systems (-0.0131 and -0.0165",
                    "polygon": [
                        1.4926,
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                        6.8263,
                        4.3391,
                        6.9841,
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                    ],
                    "spans": [
                        {
                            "offset": 37627,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "pH units/C, respectively) (cf. Comp. Biochem.",
                    "polygon": [
                        1.4926,
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                        4.3343,
                        6.9936,
                        4.3296,
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                    ],
                    "spans": [
                        {
                            "offset": 37673,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "Physiol. 81A:49- 53, 1985). These data contrast",
                    "polygon": [
                        1.4974,
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                        4.3439,
                        7.1657,
                        4.3439,
                        7.3235,
                        1.4926,
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                    ],
                    "spans": [
                        {
                            "offset": 37719,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "sharply with those for marine seatrout, Cynoscion",
                    "polygon": [
                        1.4974,
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                        4.3439,
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                    ],
                    "spans": [
                        {
                            "offset": 37767,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "arenarius, which have more typical rates of pH",
                    "polygon": [
                        1.4926,
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                        4.3439,
                        7.6677,
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                    ],
                    "spans": [
                        {
                            "offset": 37817,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "change with temperature (-0.0048 and -0.0150 pH",
                    "polygon": [
                        1.4926,
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                        4.3487,
                        7.835,
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                    ],
                    "spans": [
                        {
                            "offset": 37864,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "units/°C in open and closed systems, respectively)",
                    "polygon": [
                        1.4926,
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                        4.3343,
                        7.8445,
                        4.3296,
                        8.0023,
                        1.4878,
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                    ],
                    "spans": [
                        {
                            "offset": 37912,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "according to a study by J. N. Cameron (Respir.",
                    "polygon": [
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                        4.3296,
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                    ],
                    "spans": [
                        {
                            "offset": 37963,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "Physiol. 33:129-144, 1978). Perry and others pos-",
                    "polygon": [
                        1.4831,
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                        4.3248,
                        8.1744,
                        4.3248,
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                    ],
                    "spans": [
                        {
                            "offset": 38010,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "tulated that the unusual rates of pH change with",
                    "polygon": [
                        1.4831,
                        8.3034,
                        4.3296,
                        8.3369,
                        4.3248,
                        8.4947,
                        1.4831,
                        8.4516
                    ],
                    "spans": [
                        {
                            "offset": 38060,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "temperature in tuna blood were an adaptation re-",
                    "polygon": [
                        1.4783,
                        8.4803,
                        4.3248,
                        8.4994,
                        4.32,
                        8.6524,
                        1.4783,
                        8.6189
                    ],
                    "spans": [
                        {
                            "offset": 38109,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "lated to the unusual anatomy, physiology, and life-",
                    "polygon": [
                        1.4783,
                        8.6333,
                        4.32,
                        8.6715,
                        4.3152,
                        8.8293,
                        1.4783,
                        8.7863
                    ],
                    "spans": [
                        {
                            "offset": 38158,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "style of these pelagic teleosts. Blood from",
                    "polygon": [
                        1.4783,
                        8.8054,
                        4.3296,
                        8.8293,
                        4.3248,
                        8.987,
                        1.4783,
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                    ],
                    "spans": [
                        {
                            "offset": 38210,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "albacore, Thunnus alalunga, also exhibits a high",
                    "polygon": [
                        1.4783,
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                        4.3248,
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                    ],
                    "spans": [
                        {
                            "offset": 38254,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "rate of pH change with temperature (0.016 pH",
                    "polygon": [
                        1.4783,
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                    "spans": [
                        {
                            "offset": 38303,
                            "length": 44
                        }
                    ]
                },
                {
                    "content": "units/°C) in the open system, according to a study",
                    "polygon": [
                        1.4831,
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                    ],
                    "spans": [
                        {
                            "offset": 38348,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "by J. J. Cech and others (J. Exp. Biol. 109:21-34,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 38399,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "1985).",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 38450,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "The study described in the poster used blood",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 38457,
                            "length": 44
                        }
                    ]
                },
                {
                    "content": "from small (ca. 1-3 kg) yellowfin tuna, equi-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 38502,
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                    ]
                },
                {
                    "content": "librated at temperatures inhabited by this species",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 38548,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "and at CO2 levels corresponding to normal arterial",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 38599,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "and venous blood values. Results showed that the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 38650,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "yellowfin tuna blood had an unusually high HCO3",
                    "polygon": [
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                    "spans": [
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                            "offset": 38699,
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                    ]
                },
                {
                    "content": "and non-bicarbonate buffering capacity when",
                    "polygon": [
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                    "spans": [
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                            "offset": 38747,
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                    ]
                },
                {
                    "content": "compared with other teleosts. Tuna blood and",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 38791,
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                        }
                    ]
                },
                {
                    "content": "plasma had the same rates of pH/℃ and pCO2/℃",
                    "polygon": [
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                    "spans": [
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                            "offset": 38836,
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                    ]
                },
                {
                    "content": "in a closed system as other teleosts; this result was",
                    "polygon": [
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                    "spans": [
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                            "offset": 38881,
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                    ]
                },
                {
                    "content": "expected since these changes were most likely due",
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                    "spans": [
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                            "offset": 38935,
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                    ]
                },
                {
                    "content": "to reciprocal titration of plasma proteins and",
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                    "spans": [
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                            "offset": 38985,
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                    ]
                },
                {
                    "content": "HCO3. Tuna red blood cells appeared to be in-",
                    "polygon": [
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                        {
                            "offset": 39032,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "volved in the unusually high pH/℃ and [HCO3]/℃",
                    "polygon": [
                        4.6836,
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                    "spans": [
                        {
                            "offset": 39078,
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                        }
                    ]
                },
                {
                    "content": "changes occurring in the open system. The pH/℃",
                    "polygon": [
                        4.674,
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                        3.2124,
                        7.5301,
                        3.3701,
                        4.674,
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                    "spans": [
                        {
                            "offset": 39125,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "changes in the open system were pCO2 dependent",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 39172,
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                        }
                    ]
                },
                {
                    "content": "and independent of [HCO3]/℃ changes, most like-",
                    "polygon": [
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                    "spans": [
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                            "offset": 39219,
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                    ]
                },
                {
                    "content": "ly reflecting the movement of strong ions into or",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 39267,
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                        }
                    ]
                },
                {
                    "content": "out of red blood cells. The study is part of a larger",
                    "polygon": [
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                            "offset": 39317,
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                    ]
                },
                {
                    "content": "effort aimed at understanding the in vivo regula-",
                    "polygon": [
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                            "offset": 39371,
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                    ]
                },
                {
                    "content": "tion of acid-base status in tunas.",
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                    ]
                },
                {
                    "content": "At the symposium in Finland, Brill presented an",
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                        6.117
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                    "spans": [
                        {
                            "offset": 42005,
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                    ]
                },
                {
                    "content": "tion. They were transported to Kure Atoll in April",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 42054,
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                    ]
                },
                {
                    "content": "and maintained in the protective enclosure until",
                    "polygon": [
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                    "spans": [
                        {
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                    ]
                },
                {
                    "content": "being released in late May. Two of the females",
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                    "spans": [
                        {
                            "offset": 42154,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "were sighted at Kure Atoll throughout the summer,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 42201,
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                        }
                    ]
                },
                {
                    "content": "but the third was not sighted, having either",
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                    "spans": [
                        {
                            "offset": 42251,
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                    ]
                },
                {
                    "content": "emigrated or died.",
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                        {
                            "offset": 42296,
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                    ]
                },
                {
                    "content": "Ten pups were born at Kure Atoll in 1989; nine",
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                    ]
                },
                {
                    "content": "survived to weaning. This is the highest number of",
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                    "spans": [
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                    ]
                },
                {
                    "content": "births documented at the atoll since 1981 and is a",
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                    "spans": [
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                    ]
                },
                {
                    "content": "marked increase since the low of one birth in 1986.",
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                        {
                            "offset": 42464,
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                        }
                    ]
                },
                {
                    "content": "Furthermore, female seals that were \"graduates\" of",
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                    "spans": [
                        {
                            "offset": 42516,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "the Head Start Project in its early years are now",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 42567,
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                        }
                    ]
                },
                {
                    "content": "giving birth. With a relatively large cohort of",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 42617,
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                        }
                    ]
                },
                {
                    "content": "young females approaching reproductive age, the",
                    "polygon": [
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                        {
                            "offset": 42665,
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                    ]
                },
                {
                    "content": "number of births at Kure Atoll is expected to con-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 42713,
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                        }
                    ]
                },
                {
                    "content": "tinue to increase. (J. Henderson (808) 943-1225)",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 42764,
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                        }
                    ]
                },
                {
                    "content": "Research Successfully Completed on Laysan",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 42813,
                            "length": 41
                        }
                    ]
                },
                {
                    "content": "Island and Pearl and Hermes Reef",
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                    "spans": [
                        {
                            "offset": 42855,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "The annual field research directed at monitoring",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 42888,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "the Hawaiian monk seal, Monachus schauinslandi,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 42937,
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                        }
                    ]
                },
                {
                    "content": "and green turtle, Chelonia mydas, on Laysan Island",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 42985,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "and Pearl and Hermes Reef was completed on",
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                    "spans": [
                        {
                            "offset": 43036,
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                        }
                    ]
                },
                {
                    "content": "August 2, 1989, by Wildlife Biologist Brenda L.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 43079,
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                        }
                    ]
                },
                {
                    "content": "Becker, with the assistance of several volunteers.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 43127,
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                        }
                    ]
                },
                {
                    "content": "Preliminary results from the 3.5-month field camp",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 43178,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "at Laysan Island indicated that a minimum of 32",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 43228,
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                        }
                    ]
                },
                {
                    "content": "pups were born in 1989, which is about average for",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 43276,
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                        }
                    ]
                },
                {
                    "content": "this island. The minimum survival rate (60%) of the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 43327,
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                        }
                    ]
                },
                {
                    "content": "yearling monk seals was lower than normal (80-",
                    "polygon": [
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                    "spans": [
                        {
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                        }
                    ]
                },
                {
                    "content": "90%), but births (N=45) in 1988 were the highest on",
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                        {
                            "offset": 43426,
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                        }
                    ]
                },
                {
                    "content": "record since 1977, when intensive research efforts",
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                        {
                            "offset": 43478,
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                        }
                    ]
                },
                {
                    "content": "began at Laysan Island.",
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                    "spans": [
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                            "offset": 43529,
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                    ]
                },
                {
                    "content": "Thirteen mortalities of seals were documented",
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                            "offset": 43553,
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                    ]
                },
                {
                    "content": "at Laysan Island; half (seven) were adult females.",
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                    "spans": [
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                    ]
                },
                {
                    "content": "Injuries due to mobbings by adult males were",
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                },
                {
                    "content": "present on eight of the carcasses (i.e. , all seven of",
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                    ]
                },
                {
                    "content": "the adult females and one subadult male). Only",
                    "polygon": [
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                    ]
                },
                {
                    "content": "one mobbing incident, which was not fatal, was",
                    "polygon": [
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                },
                {
                    "content": "observed; it involved a 5-year-old adult female",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "and at least five adult males. One of the mortalities",
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                    ]
                },
                {
                    "content": "was of an immature seal whose skull and attached",
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                    "spans": [
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                    ]
                },
                {
                    "content": "foreflipper were found in the stomach of a dead",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "tiger shark, Galeocerdo cuvieri, that washed",
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                    "spans": [
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                            "offset": 44043,
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                    ]
                },
                {
                    "content": "ashore. This is the first documented case of a",
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                    "spans": [
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                    ]
                },
                {
                    "content": "monk seal skull being discovered inside a shark.",
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                    ]
                },
                {
                    "content": "Three seals were found entangled in marine",
                    "polygon": [
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                            "offset": 44184,
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                    ]
                },
                {
                    "content": "debris; one incident required physical restraint to",
                    "polygon": [
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                        {
                            "offset": 44227,
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                        }
                    ]
                },
                {
                    "content": "remove a small tire from an adult female.",
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                        {
                            "offset": 44279,
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                    ]
                },
                {
                    "content": "Turtle nesting activity on Laysan Island was",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 44321,
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                        }
                    ]
                },
                {
                    "content": "quite low -- only nine nests. Three adult turtles",
                    "polygon": [
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                    "spans": [
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                            "offset": 44366,
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                    ]
                },
                {
                    "content": "with fibropapillomas (tumors) were sighted",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 44416,
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                    ]
                },
                {
                    "content": "during the field season, compared with one sight-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 44459,
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                    ]
                },
                {
                    "content": "ing of a diseased turtle in 1988. Last year's sight-",
                    "polygon": [
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                            "offset": 44509,
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                    ]
                },
                {
                    "content": "ing was the first on record at Laysan Island,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 44562,
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                    ]
                },
                {
                    "content": "although the number of turtles exhibiting",
                    "polygon": [
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                            "offset": 44608,
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                    ]
                },
                {
                    "content": "fibropapillomas has been increasing around the",
                    "polygon": [
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                    "spans": [
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                            "offset": 44650,
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                    ]
                },
                {
                    "content": "main Hawaiian Islands. One of the diseased",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "turtles sighted in 1989 had tumors on its eyes, and",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "during the field season, its left front flipper was",
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                    ]
                },
                {
                    "content": "partially amputated, presumably by a tiger shark.",
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                },
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                    "content": "Loss of vision due to the tumors probably made",
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                    "content": "the turtle more vulnerable to shark attack.",
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                    "content": "After the Laysan Island field season, re-",
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                    "content": "searchers spent 2 weeks at Pearl and Hermes Reef",
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                    "content": "conducting census counts as well as individual",
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                    "content": "tagged, no mortalities were documented, and one",
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                    "content": "tivity was again minimal. (B. Becker (808) 943-",
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                },
                {
                    "content": "cording to George H. Balazs, Leader of the Marine",
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                {
                    "content": "Turtle Research Task, tag and recapture work per-",
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                },
                {
                    "content": "formed in July 1989 indicates that 14 of 143 turtles",
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                    ]
                },
                {
                    "content": "(9.8%) captured off Molokai had tumors, com-",
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                },
                {
                    "content": "pared with 6 of 125 turtles (4.8%) during the same",
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                    ]
                },
                {
                    "content": "period in 1988. The etiology of this disease, its",
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                },
                {
                    "content": "mode of transmission, and its impact to the biologi-",
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                    ]
                },
                {
                    "content": "cal recovery of the green turtle population in",
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                {
                    "content": "Hawaii are presently unknown. Scientists also",
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                {
                    "content": "have yet to pinpoint why the disease has spread",
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                {
                    "content": "simultaneously at certain sites in Hawaii and",
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                },
                {
                    "content": "Florida during the past few years.",
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                },
                {
                    "content": "The periodic monitoring and tagging of imma-",
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                },
                {
                    "content": "ture and adult green turtles at Palau has been under",
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                },
                {
                    "content": "way since May 1982, in cooperation with Bill",
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                },
                {
                    "content": "Puleloa, an Aquatic Biologist with the State of",
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                },
                {
                    "content": "Hawaii, and Ed Medeiros, a local fisherman who",
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                },
                {
                    "content": "is well versed in the capture of sea turtles. During",
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                },
                {
                    "content": "1982-85, approximately 300 turtles were captured,",
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                },
                {
                    "content": "examined, tagged, and released without any cases",
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                },
                {
                    "content": "of tumors being seen. However, one of the turtles",
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                {
                    "content": "captured in October 1985 was heavily afflicted",
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                },
                {
                    "content": "with these debilitating epithelial growths; the",
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                    ]
                },
                {
                    "content": "second diseased turtle was captured in June 1987.",
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                    ]
                },
                {
                    "content": "Increased effort will be directed at monitoring",
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                    ]
                },
                {
                    "content": "the incidence of tumors at other coastal habitats",
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                    ]
                },
                {
                    "content": "preferred by turtles in the Hawaiian Islands. In",
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                },
                {
                    "content": "addition, cooperative studies were initiated in",
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                },
                {
                    "content": "Hawaii with researchers at the Universities of",
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                },
                {
                    "content": "Florida and Chicago in concordance with the",
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                },
                {
                    "content": "priority position assigned to this problem in the",
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                },
                {
                    "content": "Recovery Plan for Hawaiian Sea Turtles. (G.",
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                },
                {
                    "content": "Balazs (808) 943-1221)",
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                },
                {
                    "content": "FISHERY MANAGEMENT",
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                },
                {
                    "content": "RESEARCH PROGRAM",
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                {
                    "content": "Midyear Fishery Reports",
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                },
                {
                    "content": "The source of greatest controversy in",
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                    ]
                },
                {
                    "content": "Hawaii's commercial fisheries in 1989 is the",
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                },
                {
                    "content": "emerging conflict between a group of recently",
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                },
                {
                    "content": "arrived longline fishing boats from the Gulf of",
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                    ]
                },
                {
                    "content": "Mexico and small-scale recreational, commer-",
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                    ]
                },
                {
                    "content": "cial, and charter boats off Oahu's Waianae coast",
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                    ]
                },
                {
                    "content": "and on Haleiwa's fishing grounds. The topic",
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                },
                {
                    "content": "dominated discussions at the July 24-26, 1989",
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                {
                    "content": "meeting of the Western Pacific Regional Fishery",
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                {
                    "content": "Management Council in Kahuku, Oahu. By mid-",
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                {
                    "content": "August, the two sides involved in the conflict had",
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                {
                    "content": "attended several meetings held by Council Chair-",
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                {
                    "content": "person William Paty, and informal \"rules of the",
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                {
                    "content": "road\" had been proposed. Neither Federal nor State",
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                {
                    "content": "of Hawaii regulations on the pelagic fisheries have",
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                {
                    "content": "been applicable to this situation.",
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                },
                {
                    "content": "The potential for conflicts over markets, resour-",
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                {
                    "content": "ces, and gear has increased over the past couple of",
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                },
                {
                    "content": "years as the longline tuna fleet expanded -- from as",
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                },
                {
                    "content": "few as 16 vessels in 1980 to 37 vessels in 1987 to",
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                    "content": "at least 65 vessels in 1989. At the same time, the",
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                {
                    "content": "commercial, charter boat, and recreational trollers",
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                {
                    "content": "have expanded in number and are fishing farther",
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                    "content": "than most of Hawaii's longline fleet. This summer,",
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                    "content": "to a period of intense gear competition, because",
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                    "content": "over the past few years, the FAD's have been used",
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                    "content": "almost exclusively by trollers. Although a number",
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                    "content": "of Honolulu Laboratory scientists have been asked",
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                    "content": "for technical assistance during the controversy,",
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                    "content": "information on the biological and economic inter-",
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                    "content": "actions in these nearshore pelagic fisheries is, at",
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                    "content": "best, weak.",
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                    "content": "Meanwhile, the longline fishery for pelagic fishes",
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                    "content": "and tunas remained strong through the first half of",
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                    "content": "1989. Landings by the longline fishery in the first",
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                        1.7462
                    ],
                    "spans": [
                        {
                            "offset": 50093,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "section of the Precious Coral Fishery Management",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50143,
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                        }
                    ]
                },
                {
                    "content": "Plan. Two boats have permits, but only one has",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50192,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "fished. Detailed activity data on the fishery cannot",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50239,
                            "length": 52
                        }
                    ]
                },
                {
                    "content": "be released because of the confidentiality restric-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50292,
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                        }
                    ]
                },
                {
                    "content": "tions.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50344,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "Activity in the bottom fish fishery in the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50351,
                            "length": 42
                        }
                    ]
                },
                {
                    "content": "Northwestern Hawaiian Islands (NWHI) was light",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50394,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "during the first half of 1989. Only five vessels were",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50441,
                            "length": 53
                        }
                    ]
                },
                {
                    "content": "active in the fishery in the first half of 1989,",
                    "polygon": [
                        0.7794,
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                        3.2711,
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                    ],
                    "spans": [
                        {
                            "offset": 50495,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "making 21 trips. Catch rates on the primary species",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50544,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "of red and pink snappers reportedly were not good,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50596,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "although prices have held up well.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50647,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "Only nine trips by seven vessels were made in",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50682,
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                        }
                    ]
                },
                {
                    "content": "the NWHI lobster fishery through June 1989. Ves-",
                    "polygon": [
                        0.7698,
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                    "spans": [
                        {
                            "offset": 50728,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "sel and trip activity were lower than in 1988;",
                    "polygon": [
                        0.7746,
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                    "spans": [
                        {
                            "offset": 50777,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "however, fishing effort, catch rates for spiny",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 50824,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "lobster, Panulirus marginatus, and total lobster",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 50871,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "catches substantially exceeded the 1988 midyear",
                    "polygon": [
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                        3.6374,
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                    ],
                    "spans": [
                        {
                            "offset": 50920,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "levels. Not only has fishing been good, but prices",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 50968,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "also have been higher than in 1988. (S. Pooley",
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                        {
                            "offset": 51019,
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                        }
                    ]
                },
                {
                    "content": "(808) 943-1216)",
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                    "spans": [
                        {
                            "offset": 51066,
                            "length": 15
                        }
                    ]
                },
                {
                    "content": "PACIFIC FISHERIES",
                    "polygon": [
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                        6.2007,
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                        1.198,
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                    "spans": [
                        {
                            "offset": 51082,
                            "length": 17
                        }
                    ]
                },
                {
                    "content": "ENVIRONMENTAL GROUP",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 51100,
                            "length": 19
                        }
                    ]
                },
                {
                    "content": "Monterey, California",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 51120,
                            "length": 20
                        }
                    ]
                },
                {
                    "content": "FISHERY/ENVIRONMENTAL",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 51141,
                            "length": 21
                        }
                    ]
                },
                {
                    "content": "LINKAGES",
                    "polygon": [
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                        1.6214,
                        7.514,
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                    ],
                    "spans": [
                        {
                            "offset": 51163,
                            "length": 8
                        }
                    ]
                },
                {
                    "content": "Stock Structure and Size Composition",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 51172,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "The stock structure of albacore in the North",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 51209,
                            "length": 44
                        }
                    ]
                },
                {
                    "content": "Pacific is presently an unresolved problem.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 51254,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "Fishery Biologist Richard Parrish is currently",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 51298,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "using the extensive length frequency measure-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 51345,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "ments taken in the Japanese baitboat fishery",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 51391,
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                        }
                    ]
                },
                {
                    "content": "(479,400 fish) and those from the American",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 51436,
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                        }
                    ]
                },
                {
                    "content": "fishery (318,558 fish) to examine this problem.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 51479,
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                        }
                    ]
                },
                {
                    "content": "There is circumstantial evidence which suggests",
                    "polygon": [
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                    "spans": [
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                            "offset": 51527,
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                        }
                    ]
                },
                {
                    "content": "that the traditional U.S. albacore fishery is based",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 51575,
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                    ]
                },
                {
                    "content": "on two stocks. A principal piece of evidence is",
                    "polygon": [
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                    "spans": [
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                            "offset": 51627,
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                        }
                    ]
                },
                {
                    "content": "that differences in the growth rates of albacore",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 51675,
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                        }
                    ]
                },
                {
                    "content": "caught in the northern and southern fishing",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 51724,
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                        }
                    ]
                },
                {
                    "content": "grounds have been observed (i.e. north and south",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 51768,
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                        }
                    ]
                },
                {
                    "content": "of 38 degrees North). Growth studies based on a",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 51817,
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                        }
                    ]
                },
                {
                    "content": "limited number of fish for which daily otolith",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 51865,
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                    ]
                },
                {
                    "content": "counts have been made (98 from the northern area",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 51912,
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                    ]
                },
                {
                    "content": "and 127 from the southern area) and from tag and",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 51961,
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                    ]
                },
                {
                    "content": "recapture data from 521 fish indicate faster",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 52010,
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                    ]
                },
                {
                    "content": "growth for fish in the southern area than in the",
                    "polygon": [
                        3.955,
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                        2.1695,
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                    "spans": [
                        {
                            "offset": 52055,
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                        }
                    ]
                },
                {
                    "content": "northern area. Tag recoveries suggest that there",
                    "polygon": [
                        3.955,
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                    "spans": [
                        {
                            "offset": 52104,
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                        }
                    ]
                },
                {
                    "content": "is more interchange of albacore between the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 52153,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "Kuroshio Current region and the northern portion",
                    "polygon": [
                        3.955,
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                    "spans": [
                        {
                            "offset": 52197,
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                        }
                    ]
                },
                {
                    "content": "of the California Current region than between the",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 52246,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "Kuroshio and the southern portion of the Califor-",
                    "polygon": [
                        3.955,
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                    "spans": [
                        {
                            "offset": 52296,
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                        }
                    ]
                },
                {
                    "content": "nia Current, and that there may be two stocks.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 52346,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "The North Pacific albacore fisheries are quite",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 52393,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "seasonal and occur in different seasons in dif-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 52440,
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                        }
                    ]
                },
                {
                    "content": "ferent regions. Also, albacore grow very quickly",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 52488,
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                        }
                    ]
                },
                {
                    "content": "and the differences in size distributions between",
                    "polygon": [
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                    "spans": [
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                            "offset": 52537,
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                    ]
                },
                {
                    "content": "regions is heavily influenced by the interaction of",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 52587,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "these factors. To limit the seasonal bias, the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 52639,
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                        }
                    ]
                },
                {
                    "content": "analysis was limited to fish captured in July and",
                    "polygon": [
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                            "offset": 52686,
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                    ]
                },
                {
                    "content": "August, when the California Current albacore",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 52736,
                            "length": 44
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                    ]
                },
                {
                    "content": "fishery peaks. The data were divided into bands",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "of 5 degrees of latitude for both the Kuroshio and",
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                    ]
                },
                {
                    "content": "California Current fisheries to show regional pat-",
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                    ]
                },
                {
                    "content": "terns in length frequencies. In the July-August",
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                {
                    "content": "period the catch from the Japanese baitboat",
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                },
                {
                    "content": "fishery is dominated by fish taken in the Kuroshio",
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                    ]
                },
                {
                    "content": "Extension.",
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                            "offset": 53074,
                            "length": 10
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                    ]
                },
                {
                    "content": "The clearest feature of the data is that all of the",
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                    "spans": [
                        {
                            "offset": 53085,
                            "length": 51
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                    ]
                },
                {
                    "content": "regions have a mode at 61-62 cm, representing",
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                    "spans": [
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                            "offset": 53137,
                            "length": 45
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                    ]
                },
                {
                    "content": "3-year old fish (A in Figures 1 and 2). This mode",
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                    "spans": [
                        {
                            "offset": 53183,
                            "length": 49
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                    ]
                },
                {
                    "content": "dominates the size composition in each of the",
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                    "spans": [
                        {
                            "offset": 53233,
                            "length": 45
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                    ]
                },
                {
                    "content": "regions; with the significant exception of the 30",
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                },
                {
                    "content": "A",
                    "polygon": [
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                            "offset": 53329,
                            "length": 1
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                    ]
                },
                {
                    "content": "35 N (n=6,109)",
                    "polygon": [
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                    "spans": [
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                            "offset": 53331,
                            "length": 14
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                    ]
                },
                {
                    "content": "14",
                    "polygon": [
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                    "spans": [
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                },
                {
                    "content": "PERCENTAGE AT LENGTH",
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                },
                {
                    "content": "12",
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                },
                {
                    "content": "10",
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                },
                {
                    "content": "30 N (n=14,398)",
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                    "content": "8",
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                },
                {
                    "content": "40 N (n=3,925)",
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                {
                    "content": "6",
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                {
                    "content": "B",
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                {
                    "content": "c",
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                    "content": "50",
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                    "content": "60",
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                {
                    "content": "70",
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                {
                    "content": "80",
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                    "content": "90",
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                {
                    "content": "100",
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                    "content": "LENGTH (CM)",
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                {
                    "content": "Figure 1. Length frequencies of albacore taken in",
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                    "content": "July-August (1965-82) within 5 degree latitude",
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                {
                    "content": "bands by the Japanese baitboat fishery.",
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                    "content": "13",
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                    "content": "N",
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                {
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                {
                    "content": "%",
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                    "content": "median",
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                    "content": "0-",
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                    "confidence": 0.989,
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                    }
                },
                {
                    "content": "196",
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                {
                    "content": "1962",
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                {
                    "content": "1963",
                    "polygon": [
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                    "span": {
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                },
                {
                    "content": "-",
                    "polygon": [
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                    "confidence": 0.337,
                    "span": {
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                    }
                },
                {
                    "content": "&",
                    "polygon": [
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                    "confidence": 0.241,
                    "span": {
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            ],
            "lines": [
                {
                    "content": "14",
                    "polygon": [
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                    "spans": [
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                            "length": 2
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                },
                {
                    "content": "40 N (n=41,867)",
                    "polygon": [
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                    "spans": [
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                            "offset": 53593,
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                    ]
                },
                {
                    "content": "PERCENTAGE AT LENGTH",
                    "polygon": [
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                    ]
                },
                {
                    "content": "45 N (n=96,981)",
                    "polygon": [
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                },
                {
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                        }
                    ]
                },
                {
                    "content": "35 N (n=32,211)",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "B",
                    "polygon": [
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                },
                {
                    "content": "10",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "50 N (n=8,509)",
                    "polygon": [
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                    ]
                },
                {
                    "content": "8",
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                },
                {
                    "content": "1",
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                    ]
                },
                {
                    "content": "6",
                    "polygon": [
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                    "spans": [
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                            "offset": 53689,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "30 N (n=38,132)",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "25 N (n=2,790)",
                    "polygon": [
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                    ]
                },
                {
                    "content": "4",
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                    ]
                },
                {
                    "content": "2",
                    "polygon": [
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                    ]
                },
                {
                    "content": "50",
                    "polygon": [
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                            "length": 2
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                    ]
                },
                {
                    "content": "55",
                    "polygon": [
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                    "spans": [
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                            "length": 2
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                    ]
                },
                {
                    "content": "60",
                    "polygon": [
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                    "spans": [
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                            "offset": 53732,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "65",
                    "polygon": [
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                            "offset": 53735,
                            "length": 2
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                    ]
                },
                {
                    "content": "70",
                    "polygon": [
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                            "offset": 53738,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "75",
                    "polygon": [
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                            "length": 2
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                    ]
                },
                {
                    "content": "80",
                    "polygon": [
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                            "length": 2
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                    ]
                },
                {
                    "content": "85",
                    "polygon": [
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                            "length": 2
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                    ]
                },
                {
                    "content": "LENGTH (CM)",
                    "polygon": [
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                            "length": 11
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                    ]
                },
                {
                    "content": "Figure 2. Length frequencies of albacore taken in",
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                            "length": 49
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                    ]
                },
                {
                    "content": "July-August (1961-84) within 5 degree latitude",
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                    "spans": [
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                            "offset": 53812,
                            "length": 46
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                    ]
                },
                {
                    "content": "bands in the California Current Region.",
                    "polygon": [
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                    "spans": [
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                            "offset": 53859,
                            "length": 39
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                    ]
                },
                {
                    "content": "degree bands in the Kuroshio where albacore of",
                    "polygon": [
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                    ]
                },
                {
                    "content": "this size comprise only a very minor proportion of",
                    "polygon": [
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                            "offset": 53946,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "the size composition and in the most southern 5",
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                    "spans": [
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                    ]
                },
                {
                    "content": "degree bands in the California Current where it is",
                    "polygon": [
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                    ]
                },
                {
                    "content": "the secondary mode. Thus, 3-year old albacore",
                    "polygon": [
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                            "length": 45
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                    ]
                },
                {
                    "content": "are the same size in July and August in all regions",
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                            "offset": 54142,
                            "length": 51
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                    ]
                },
                {
                    "content": "in which they are caught in the North Pacific.",
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                            "offset": 54194,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "The size of 4-year old albacore is quite a different",
                    "polygon": [
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                    "spans": [
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                            "offset": 54241,
                            "length": 52
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                    ]
                },
                {
                    "content": "story. In the California Current region, size com-",
                    "polygon": [
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                            "offset": 54294,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "position has a mode at 73 cm in the 40, 45, and 50",
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                            "offset": 54345,
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                    ]
                },
                {
                    "content": "degree north bands (B in Figure 2); whereas the",
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                    ]
                },
                {
                    "content": "mode is at 76 or 77 cm in the 25, 30, and 35 degree",
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                    ]
                },
                {
                    "content": "north bands (C in Figure 2). In addition, there is a",
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                    ]
                },
                {
                    "content": "continuous increase in the proportion of fish larger",
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                    ]
                },
                {
                    "content": "than 73 cm from the north to the south. In the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 54602,
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                    ]
                },
                {
                    "content": "Japanese baitboat fishery there are modes at either",
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                    ]
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                {
                    "content": "77 or 78 cm at the 30, 35, and 40 degree north bands",
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                    ]
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                {
                    "content": "(C in Figure 1); however, the bulk of the albacore",
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                {
                    "content": "catch in the 30 degree north bands are larger than the",
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                    ]
                },
                {
                    "content": "mode for 4-year olds.",
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                    ]
                },
                {
                    "content": "The evidence from this analysis suggests that the",
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                },
                {
                    "content": "size composition, and presumably the growth rates,",
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                    ]
                },
                {
                    "content": "of albacore are more similar in the Western Pacific",
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                },
                {
                    "content": "region and the southern portion of the California",
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                    ]
                },
                {
                    "content": "Current than they are in the northern and southern",
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                            "offset": 55085,
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                    ]
                },
                {
                    "content": "portions of the California Current or in the northern",
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                            "offset": 55136,
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                    ]
                },
                {
                    "content": "portion of the California Current and the Western",
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                    "spans": [
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                            "offset": 55190,
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                    ]
                },
                {
                    "content": "Pacific. Three-year olds appear to be the same size",
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                            "offset": 55240,
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                    ]
                },
                {
                    "content": "everywhere, and the size of 4-year olds appears to",
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                    "spans": [
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                            "offset": 55292,
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                    ]
                },
                {
                    "content": "be primarily a function of latitude. (D. Parrish (408)",
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                    ]
                },
                {
                    "content": "646-3311)",
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                    ]
                },
                {
                    "content": "MATHEMATICAL MODELING AND",
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                    ]
                },
                {
                    "content": "DATA ANALYSIS",
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                {
                    "content": "Results Show Long-Term Decline in Albacore",
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                },
                {
                    "content": "Catch Rates",
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                    ]
                },
                {
                    "content": "Operations Research Analyst Roy Men-",
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                    ]
                },
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                    "content": "delssohn has been developing predictive models",
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                    ]
                },
                {
                    "content": "for the West Coast albacore fishery utilizing catch",
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                },
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                    "content": "information from the albacore logbook program.",
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                    ]
                },
                {
                    "content": "As a part of this program, the annual variations in",
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                    ]
                },
                {
                    "content": "catch rates are being examined. Recent results",
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                },
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                    "content": "show that there has been a long-term decline in",
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                    ]
                },
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                    "content": "the number of fish caught per day in the fishery",
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                },
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                    "content": "and that the decline has been particularly dramatic",
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                },
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                    "content": "in the region which has traditionally provided the",
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                    ]
                },
                {
                    "content": "bulk of the catch from the northern Oregon-",
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                    ]
                },
                {
                    "content": "Washington portion of the fishery. During the",
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                    ]
                },
                {
                    "content": "1960s, median catches averaged nearly 100 fish",
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                    ]
                },
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                    "content": "per day in the northern fishery, and catches ex-",
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                },
                {
                    "content": "ceeding 200 fish per day were quite common",
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                },
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                    "content": "(Figure 3). In the 1970s, median catch per day",
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                },
                {
                    "content": "600-",
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                },
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                    "content": "400",
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                    ]
                },
                {
                    "content": "extreme values",
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                    ]
                },
                {
                    "content": ".",
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                },
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                    "content": "T",
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                },
                {
                    "content": ". -",
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                },
                {
                    "content": "-",
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                {
                    "content": "1.5 x interquartile",
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                },
                {
                    "content": "range",
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                },
                {
                    "content": "200+",
                    "polygon": [
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                },
                {
                    "content": "75 th percentile",
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                },
                {
                    "content": "median",
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                            "length": 6
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                    ]
                },
                {
                    "content": "T",
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                    "spans": [
                        {
                            "offset": 56350,
                            "length": 1
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                    ]
                },
                {
                    "content": "1",
                    "polygon": [
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                    "spans": [
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                            "offset": 56352,
                            "length": 1
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                    ]
                },
                {
                    "content": "T",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 56354,
                            "length": 1
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                    ]
                },
                {
                    "content": "1964 1965",
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                },
                {
                    "content": "1966",
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                            "offset": 56366,
                            "length": 4
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                    ]
                },
                {
                    "content": "1967",
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                },
                {
                    "content": "1968",
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                            "offset": 56376,
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                },
                {
                    "content": "1969",
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                            "offset": 56381,
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                    ]
                },
                {
                    "content": "interval",
                    "polygon": [
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                            "offset": 56386,
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                },
                {
                    "content": "600+",
                    "polygon": [
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                },
                {
                    "content": "Fish per day",
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                            "length": 12
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                    ]
                },
                {
                    "content": "100",
                    "polygon": [
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                        6.6566
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                    "spans": [
                        {
                            "offset": 56413,
                            "length": 3
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                    ]
                },
                {
                    "content": "·",
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                    "spans": [
                        {
                            "offset": 56417,
                            "length": 1
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                    ]
                },
                {
                    "content": "200",
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                    "spans": [
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                },
                {
                    "content": ".",
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                    ]
                },
                {
                    "content": "-",
                    "polygon": [
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                    "spans": [
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                            "offset": 56425,
                            "length": 1
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                    ]
                },
                {
                    "content": "H",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 56427,
                            "length": 1
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                    ]
                },
                {
                    "content": "1970",
                    "polygon": [
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                            "offset": 56429,
                            "length": 4
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                    ]
                },
                {
                    "content": "1971",
                    "polygon": [
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                        {
                            "offset": 56434,
                            "length": 4
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                    ]
                },
                {
                    "content": "1972",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 56439,
                            "length": 4
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                    ]
                },
                {
                    "content": "1973",
                    "polygon": [
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                    "spans": [
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                            "offset": 56444,
                            "length": 4
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                    ]
                },
                {
                    "content": "1974",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 56449,
                            "length": 4
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                    ]
                },
                {
                    "content": "1975 1976 1977",
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                    "spans": [
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                            "offset": 56454,
                            "length": 14
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                    ]
                },
                {
                    "content": "7978",
                    "polygon": [
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                            "offset": 56469,
                            "length": 4
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                    ]
                },
                {
                    "content": "1979",
                    "polygon": [
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                            "offset": 56474,
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                    ]
                },
                {
                    "content": "1980 1981 1982 1983",
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                },
                {
                    "content": "Figure 3. Albacore catch per day, from logbook",
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                    ]
                },
                {
                    "content": "data, for the region of maximum catch in the north-",
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                    ]
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                {
                    "content": "ern fishery (i.e. between 40 and 48 degrees north",
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                {
                    "content": "and 50 to 200 km offshore).",
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                {
                    "content": "declined markedly and catches above 200 fish per",
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                },
                {
                    "content": "day became rare. Catch rates continued to decline",
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                {
                    "content": "in the early 1980s; median catch ran around 25",
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                },
                {
                    "content": "fish per day and catches of 100 fish per day be-",
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                    ]
                },
                {
                    "content": "came rare. (R. Mendelssohn (408) 646-3311)",
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                {
                    "content": "14",
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                {
                    "content": ")",
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                {
                    "content": "95 % median",
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                    "content": "confidence",
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                    "content": "196",
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                {
                    "content": "1962 1963",
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                {
                    "content": "-",
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                {
                    "content": "&",
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                    "content": "La",
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                    "content": "Jolla,",
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                    "content": "California",
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                    "content": "AND",
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                    "content": "PROGRAM",
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                {
                    "content": "Summary",
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                {
                    "content": "the",
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                {
                    "content": "1988",
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                    "content": "Anthony",
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                {
                    "content": "Majors,",
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                    "content": "Chris-",
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                    "content": "tina",
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                        "length": 9
                    }
                },
                {
                    "content": "15",
                    "polygon": [
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                        0.5189,
                        4.5313,
                        0.5189,
                        4.5313,
                        0.394,
                        4.6771,
                        0.394
                    ],
                    "confidence": 0.999,
                    "span": {
                        "offset": 60415,
                        "length": 2
                    }
                }
            ],
            "lines": [
                {
                    "content": "PELAGIC FISHERIES",
                    "polygon": [
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                        9.9212,
                        5.0936,
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                        9.7482
                    ],
                    "spans": [
                        {
                            "offset": 56963,
                            "length": 17
                        }
                    ]
                },
                {
                    "content": "RESOURCES DIVISION",
                    "polygon": [
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                        9.7194,
                        5.0071,
                        9.5416,
                        7.2415,
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                    ],
                    "spans": [
                        {
                            "offset": 56981,
                            "length": 18
                        }
                    ]
                },
                {
                    "content": "La Jolla, California",
                    "polygon": [
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                        9.3014,
                        5.5404,
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                        9.1429
                    ],
                    "spans": [
                        {
                            "offset": 57000,
                            "length": 20
                        }
                    ]
                },
                {
                    "content": "MULTISPECIES DATA",
                    "polygon": [
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                        5.8384,
                        8.9555,
                        5.8384,
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                    ],
                    "spans": [
                        {
                            "offset": 57021,
                            "length": 17
                        }
                    ]
                },
                {
                    "content": "COLLECTION AND EVALUATION",
                    "polygon": [
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                        4.9398,
                        8.7489,
                        4.9398,
                        8.5807,
                        7.5634,
                        8.5903
                    ],
                    "spans": [
                        {
                            "offset": 57039,
                            "length": 25
                        }
                    ]
                },
                {
                    "content": "PROGRAM",
                    "polygon": [
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                        6.6601,
                        8.5711,
                        6.6601,
                        8.3982,
                        7.5634,
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                    ],
                    "spans": [
                        {
                            "offset": 57065,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "Summary of the 1988 North and South Pacific",
                    "polygon": [
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                        4.7284,
                        8.033,
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                    "spans": [
                        {
                            "offset": 57073,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "Albacore Data",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 57117,
                            "length": 13
                        }
                    ]
                },
                {
                    "content": "Anthony Majors, Fishery Biologist, and Chris-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 57131,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "tina Perrin, Computer Programmer Analyst,",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 57177,
                            "length": 41
                        }
                    ]
                },
                {
                    "content": "SWFC, and Forrest Miller, IATTC, have com-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 57219,
                            "length": 42
                        }
                    ]
                },
                {
                    "content": "pleted SWFC Administrative Report LJ-89-19,",
                    "polygon": [
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                        7.2547,
                        4.7139,
                        7.0914,
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                    ],
                    "spans": [
                        {
                            "offset": 57262,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "which summarizes 1988 U.S. Pacific albacore",
                    "polygon": [
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                        4.6995,
                        7.0769,
                        4.6995,
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                    ],
                    "spans": [
                        {
                            "offset": 57306,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "fisheries. Catches of albacore in the northern",
                    "polygon": [
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                        4.7091,
                        6.904,
                        4.7091,
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                    "spans": [
                        {
                            "offset": 57350,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "fishery have increased slightly from 2,900 metric",
                    "polygon": [
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                        4.7043,
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                    ],
                    "spans": [
                        {
                            "offset": 57397,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "tons (t) in 1987 to 4,800 t in 1988, but are still well",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 57447,
                            "length": 55
                        }
                    ]
                },
                {
                    "content": "below the 20-year average of 16,000 t (1968-87).",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 57503,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "The average sizes of fish landed in the northern",
                    "polygon": [
                        7.5875,
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                        6.2025,
                        4.7139,
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                    ],
                    "spans": [
                        {
                            "offset": 57552,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "fishery (12.8 lbs), was slightly smaller than those",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 57601,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "landed in 1987 (14.9 lbs). Catch rates in fish per",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 57653,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "standard day's fishing increased from 70 fish per",
                    "polygon": [
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                        4.7043,
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                    "spans": [
                        {
                            "offset": 57704,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "day in 1987 to 117 fish per day in 1988.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 57754,
                            "length": 40
                        }
                    ]
                },
                {
                    "content": "Participation in the south Pacific U.S. albacore",
                    "polygon": [
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                        4.7187,
                        5.1648,
                        4.7187,
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                    ],
                    "spans": [
                        {
                            "offset": 57795,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "fishery reached its highest level (43 vessels in",
                    "polygon": [
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                        4.7139,
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                    ],
                    "spans": [
                        {
                            "offset": 57844,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "1988) since its start in 1986. Catches for the",
                    "polygon": [
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                        4.8333,
                        4.7187,
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                    ],
                    "spans": [
                        {
                            "offset": 57893,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "southern fishery increased substantially from 700",
                    "polygon": [
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                        4.7235,
                        4.5162,
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                    ],
                    "spans": [
                        {
                            "offset": 57940,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "t in 1987 to 3,500 t in 1988. Average size of fish",
                    "polygon": [
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                        4.5354,
                        4.7235,
                        4.5018,
                        4.7235,
                        4.348,
                        7.6019,
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                    ],
                    "spans": [
                        {
                            "offset": 57990,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "caught was 14.9 lbs. (A. Majors, FTS 893-7077;",
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                    "spans": [
                        {
                            "offset": 58041,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "C. Perrin, FTS 893-7078)",
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                    "spans": [
                        {
                            "offset": 58088,
                            "length": 24
                        }
                    ]
                },
                {
                    "content": "STOCK ASSESSMENT AND",
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                        5.4107,
                        3.8243,
                        5.4107,
                        3.6562,
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                    "spans": [
                        {
                            "offset": 58113,
                            "length": 20
                        }
                    ]
                },
                {
                    "content": "FISHERY IMPACT ANALYSIS",
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                            "offset": 58134,
                            "length": 23
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                    ]
                },
                {
                    "content": "PROGRAM",
                    "polygon": [
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                        3.2622,
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                            "offset": 58158,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "Tuna Avifauna",
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                    "spans": [
                        {
                            "offset": 58166,
                            "length": 13
                        }
                    ]
                },
                {
                    "content": "Fishery Biologist David Au, has prepared a",
                    "polygon": [
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                        4.7428,
                        2.7866,
                        4.7428,
                        2.628,
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                    "spans": [
                        {
                            "offset": 58180,
                            "length": 42
                        }
                    ]
                },
                {
                    "content": "manuscript comparing the avifaunal charac-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 58223,
                            "length": 42
                        }
                    ]
                },
                {
                    "content": "teristics of \"log\", \"school\", and \"porpoise\" as-",
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                    "spans": [
                        {
                            "offset": 58266,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "sociated schools of tuna in the eastern tropical",
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                    "spans": [
                        {
                            "offset": 58315,
                            "length": 48
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                    ]
                },
                {
                    "content": "Pacific. Some 1,762 catch records, which were",
                    "polygon": [
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                    "spans": [
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                            "offset": 58364,
                            "length": 45
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                    ]
                },
                {
                    "content": "obtained by observers during 1974 and 1975 when",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 58410,
                            "length": 47
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                    ]
                },
                {
                    "content": "much information on species associated with tuna",
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                    "spans": [
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                            "offset": 58458,
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                    ]
                },
                {
                    "content": "catches was collected, were analyzed. Terns and",
                    "polygon": [
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                    "spans": [
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                            "offset": 58507,
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                    ]
                },
                {
                    "content": "small shearwaters were most abundant with",
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                    "spans": [
                        {
                            "offset": 58555,
                            "length": 41
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                    ]
                },
                {
                    "content": "schoolfish tuna, while boobies, frigatebirds, and",
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                    ]
                },
                {
                    "content": "the larger shearwaters were more abundant with",
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                            "offset": 58647,
                            "length": 46
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                    ]
                },
                {
                    "content": "logs, and especially porpoise-associated tuna.",
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                    "spans": [
                        {
                            "offset": 58694,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "This difference was observed in the occurrence",
                    "polygon": [
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                        9.508,
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                    "spans": [
                        {
                            "offset": 58741,
                            "length": 46
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                    ]
                },
                {
                    "content": "rates of the bird species, and in the flock sizes by",
                    "polygon": [
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                        1.504,
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                    "spans": [
                        {
                            "offset": 58788,
                            "length": 52
                        }
                    ]
                },
                {
                    "content": "species and flock characteristics. It is",
                    "polygon": [
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                        9.1813,
                        1.504,
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                    "spans": [
                        {
                            "offset": 58841,
                            "length": 40
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                    ]
                },
                {
                    "content": "hypothesized that the avifaunal differences are re-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 58882,
                            "length": 51
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                    ]
                },
                {
                    "content": "lated to species-specific, aerial foraging tactics",
                    "polygon": [
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                        1.504,
                        8.8402,
                        1.504,
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                    "spans": [
                        {
                            "offset": 58934,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "used by the birds in pursuit of prey driven to the",
                    "polygon": [
                        4.3776,
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                        8.6672,
                        1.5088,
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                    "spans": [
                        {
                            "offset": 58985,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "surface by tuna. (D. Au, FTS 893-7071)",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 59036,
                            "length": 38
                        }
                    ]
                },
                {
                    "content": "TIBURON LABORATORY",
                    "polygon": [
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                        1.7539,
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                        1.7539,
                        7.5622,
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                    "spans": [
                        {
                            "offset": 59075,
                            "length": 18
                        }
                    ]
                },
                {
                    "content": "Tiburon, California",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 59094,
                            "length": 19
                        }
                    ]
                },
                {
                    "content": "GROUNDFISH COMMUNITIES",
                    "polygon": [
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                        2.0134,
                        6.9761,
                        2.0134,
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                    "spans": [
                        {
                            "offset": 59114,
                            "length": 22
                        }
                    ]
                },
                {
                    "content": "INVESTIGATIONS",
                    "polygon": [
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                        2.9696,
                        6.7839,
                        2.9696,
                        6.6109,
                        4.4016,
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                    "spans": [
                        {
                            "offset": 59137,
                            "length": 14
                        }
                    ]
                },
                {
                    "content": "Occurrences of First-Year Juvenile",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 59152,
                            "length": 34
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                    ]
                },
                {
                    "content": "Rockfishes in Nearshore Habitats Indicate",
                    "polygon": [
                        4.416,
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                    "spans": [
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                    ]
                },
                {
                    "content": "Weak Recruitment in 1989.",
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                    "spans": [
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                },
                {
                    "content": "Direct underwater counts of first-year juvenile",
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                    ]
                },
                {
                    "content": "rockfishes in nearshore habitats along the Men-",
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                    "spans": [
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                    ]
                },
                {
                    "content": "docino and Sonoma Coasts indicate that the cur-",
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                    "spans": [
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                            "offset": 59351,
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                    ]
                },
                {
                    "content": "rent year-classes of the three major species,",
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                            "offset": 59399,
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                    ]
                },
                {
                    "content": "Sebastes flavidus, S. mystinus, and S. melanops,",
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                    ]
                },
                {
                    "content": "are relatively weak. As in previous years, the",
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                },
                {
                    "content": "comparisons between sites and years are based on",
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                            "offset": 59541,
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                },
                {
                    "content": "counts made between August 15 and September",
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                            "offset": 59590,
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                    ]
                },
                {
                    "content": "15, by which time virtually all recruits of these",
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                    ]
                },
                {
                    "content": "species that will settle in the nearshore habitats",
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                },
                {
                    "content": "have done so. This year's counts, which were",
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                },
                {
                    "content": "made by Fishery Biologists Dan Howard and",
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                },
                {
                    "content": "Tony Chess of the Groundfish Communities In-",
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                            "offset": 59822,
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                    ]
                },
                {
                    "content": "vestigations, indicate levels of recruitment similar",
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                    ]
                },
                {
                    "content": "to 1984, another weak year (Tables 1 and 2). In",
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                    ]
                },
                {
                    "content": "fact, of the three, there were fewer S. flavidus and",
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                    ]
                },
                {
                    "content": "S. melanops counted this year than any other year",
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                },
                {
                    "content": "since the El Niño year of 1983.",
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                },
                {
                    "content": "Despite the relatively low numbers, however,",
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                },
                {
                    "content": "certain patterns noted during previous years",
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                    "content": "remained evident (although less so than during",
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                    "content": "years of greater abundance). Thus, the first-year",
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                    "content": "numerous off Mendocino than off Sonoma, while",
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                        3.049,
                        8.4096,
                        3.049,
                        8.2804,
                        3.5037,
                        8.2804
                    ],
                    "spans": [
                        {
                            "offset": 60897,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(26.19)",
                    "polygon": [
                        2.7905,
                        8.4096,
                        2.2353,
                        8.4144,
                        2.2353,
                        8.2852,
                        2.7858,
                        8.2804
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                    "spans": [
                        {
                            "offset": 60904,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "(10.18)",
                    "polygon": [
                        2.0486,
                        8.4192,
                        1.5078,
                        8.4144,
                        1.5078,
                        8.2852,
                        2.0486,
                        8.29
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                    "spans": [
                        {
                            "offset": 60912,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "(0.93)",
                    "polygon": [
                        1.3163,
                        8.424,
                        0.8568,
                        8.4192,
                        0.8568,
                        8.2852,
                        1.3163,
                        8.2852
                    ],
                    "spans": [
                        {
                            "offset": 60920,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "S. melanops",
                    "polygon": [
                        6.7538,
                        8.2613,
                        5.8443,
                        8.2517,
                        5.8443,
                        8.1225,
                        6.7538,
                        8.1272
                    ],
                    "spans": [
                        {
                            "offset": 60927,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "0.41",
                    "polygon": [
                        5.6289,
                        8.2517,
                        5.2843,
                        8.2565,
                        5.2843,
                        8.1464,
                        5.6242,
                        8.1416
                    ],
                    "spans": [
                        {
                            "offset": 60939,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "0.31",
                    "polygon": [
                        4.8918,
                        8.2517,
                        4.5472,
                        8.2565,
                        4.5472,
                        8.1464,
                        4.8918,
                        8.1416
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                    "spans": [
                        {
                            "offset": 60944,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "4.34",
                    "polygon": [
                        4.0733,
                        8.2613,
                        3.7431,
                        8.2613,
                        3.7431,
                        8.1512,
                        4.0733,
                        8.1512
                    ],
                    "spans": [
                        {
                            "offset": 60949,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "9.52",
                    "polygon": [
                        3.4463,
                        8.2613,
                        3.1065,
                        8.266,
                        3.1065,
                        8.156,
                        3.4415,
                        8.1512
                    ],
                    "spans": [
                        {
                            "offset": 60954,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "7.58",
                    "polygon": [
                        2.6422,
                        8.2708,
                        2.2975,
                        8.2756,
                        2.2975,
                        8.1655,
                        2.6422,
                        8.1607
                    ],
                    "spans": [
                        {
                            "offset": 60959,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "5.94",
                    "polygon": [
                        1.905,
                        8.2804,
                        1.5556,
                        8.2804,
                        1.5556,
                        8.1607,
                        1.905,
                        8.1607
                    ],
                    "spans": [
                        {
                            "offset": 60964,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "2.99",
                    "polygon": [
                        1.3115,
                        8.2804,
                        0.9094,
                        8.2804,
                        0.9094,
                        8.156,
                        1.3115,
                        8.156
                    ],
                    "spans": [
                        {
                            "offset": 60969,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "(0.14)",
                    "polygon": [
                        5.6768,
                        8.132,
                        5.2173,
                        8.1272,
                        5.2221,
                        7.9693,
                        5.6768,
                        7.9693
                    ],
                    "spans": [
                        {
                            "offset": 60974,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(0.08)",
                    "polygon": [
                        4.9684,
                        8.1368,
                        4.4802,
                        8.132,
                        4.485,
                        7.9693,
                        4.9732,
                        7.9789
                    ],
                    "spans": [
                        {
                            "offset": 60981,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(1.54)",
                    "polygon": [
                        4.1356,
                        8.1416,
                        3.6521,
                        8.1464,
                        3.6521,
                        7.9789,
                        4.1403,
                        7.9884
                    ],
                    "spans": [
                        {
                            "offset": 60988,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(2.08)",
                    "polygon": [
                        3.5085,
                        8.1416,
                        3.0394,
                        8.1512,
                        3.0394,
                        7.9837,
                        3.5085,
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                    ],
                    "spans": [
                        {
                            "offset": 60995,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(1.24)",
                    "polygon": [
                        2.7092,
                        8.1464,
                        2.2353,
                        8.1512,
                        2.2353,
                        7.9837,
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                    ],
                    "spans": [
                        {
                            "offset": 61002,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(1.35)",
                    "polygon": [
                        1.972,
                        8.156,
                        1.4551,
                        8.1607,
                        1.4551,
                        7.998,
                        1.972,
                        7.9932
                    ],
                    "spans": [
                        {
                            "offset": 61009,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(0.56)",
                    "polygon": [
                        1.3259,
                        8.156,
                        0.852,
                        8.156,
                        0.8616,
                        7.9932,
                        1.3307,
                        7.9932
                    ],
                    "spans": [
                        {
                            "offset": 61016,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "Total",
                    "polygon": [
                        6.749,
                        7.8448,
                        6.3326,
                        7.8448,
                        6.3326,
                        7.73,
                        6.749,
                        7.7252
                    ],
                    "spans": [
                        {
                            "offset": 61023,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "0.68",
                    "polygon": [
                        5.6146,
                        7.8401,
                        5.2843,
                        7.8496,
                        5.2843,
                        7.73,
                        5.6146,
                        7.73
                    ],
                    "spans": [
                        {
                            "offset": 61029,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "8.38",
                    "polygon": [
                        4.887,
                        7.8448,
                        4.552,
                        7.8448,
                        4.552,
                        7.7395,
                        4.887,
                        7.7348
                    ],
                    "spans": [
                        {
                            "offset": 61034,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "190.50",
                    "polygon": [
                        4.2265,
                        7.8544,
                        3.7335,
                        7.8544,
                        3.7335,
                        7.7443,
                        4.2265,
                        7.7395
                    ],
                    "spans": [
                        {
                            "offset": 61039,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "23.35",
                    "polygon": [
                        3.4319,
                        7.8592,
                        3.0251,
                        7.8688,
                        3.0251,
                        7.7539,
                        3.4319,
                        7.7491
                    ],
                    "spans": [
                        {
                            "offset": 61046,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "291.67",
                    "polygon": [
                        2.8001,
                        7.8688,
                        2.2927,
                        7.8688,
                        2.2927,
                        7.7539,
                        2.8001,
                        7.7539
                    ],
                    "spans": [
                        {
                            "offset": 61052,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "141.29",
                    "polygon": [
                        2.0582,
                        7.8736,
                        1.5269,
                        7.8736,
                        1.5269,
                        7.7539,
                        2.0582,
                        7.7539
                    ],
                    "spans": [
                        {
                            "offset": 61059,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "11.69",
                    "polygon": [
                        1.3307,
                        7.8736,
                        0.9094,
                        7.8736,
                        0.9094,
                        7.7539,
                        1.3307,
                        7.7539
                    ],
                    "spans": [
                        {
                            "offset": 61066,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "(0.19)",
                    "polygon": [
                        5.6864,
                        7.7252,
                        5.2077,
                        7.73,
                        5.2125,
                        7.5672,
                        5.6864,
                        7.5577
                    ],
                    "spans": [
                        {
                            "offset": 61072,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(2.33)",
                    "polygon": [
                        4.954,
                        7.7252,
                        4.4706,
                        7.73,
                        4.4706,
                        7.5625,
                        4.9588,
                        7.572
                    ],
                    "spans": [
                        {
                            "offset": 61079,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(29.82)",
                    "polygon": [
                        4.2169,
                        7.7204,
                        3.676,
                        7.7204,
                        3.676,
                        7.5864,
                        4.2121,
                        7.5864
                    ],
                    "spans": [
                        {
                            "offset": 61086,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "(3.91)",
                    "polygon": [
                        3.4271,
                        7.7252,
                        2.9533,
                        7.73,
                        2.9533,
                        7.596,
                        3.4271,
                        7.596
                    ],
                    "spans": [
                        {
                            "offset": 61094,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(33.99)",
                    "polygon": [
                        2.7905,
                        7.7443,
                        2.197,
                        7.7443,
                        2.197,
                        7.5816,
                        2.7905,
                        7.5816
                    ],
                    "spans": [
                        {
                            "offset": 61101,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "(16.88)",
                    "polygon": [
                        2.0582,
                        7.7491,
                        1.4886,
                        7.7491,
                        1.4886,
                        7.5864,
                        2.0582,
                        7.5864
                    ],
                    "spans": [
                        {
                            "offset": 61109,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "Table 2 .-- Mean number (standard error in parentheses) of first- year juveniles counted/minute off the Sonoma coast",
                    "polygon": [
                        6.6676,
                        7.1413,
                        0.9477,
                        7.1652,
                        0.9477,
                        7.0168,
                        6.6676,
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                    "spans": [
                        {
                            "offset": 61117,
                            "length": 116
                        }
                    ]
                },
                {
                    "content": "during August, 1989. Results from other years provided for comparison. n=number of one minute assessments.",
                    "polygon": [
                        6.6916,
                        6.9929,
                        1.0482,
                        7.0072,
                        1.0482,
                        6.8684,
                        6.6868,
                        6.8493
                    ],
                    "spans": [
                        {
                            "offset": 61234,
                            "length": 106
                        }
                    ]
                },
                {
                    "content": "Species",
                    "polygon": [
                        6.7346,
                        6.5334,
                        6.1507,
                        6.5334,
                        6.1507,
                        6.3994,
                        6.7346,
                        6.3994
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                    "spans": [
                        {
                            "offset": 61341,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "1984",
                    "polygon": [
                        4.8727,
                        6.6578,
                        4.5376,
                        6.6578,
                        4.5424,
                        6.5477,
                        4.8727,
                        6.5477
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                    "spans": [
                        {
                            "offset": 61349,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "n=57",
                    "polygon": [
                        4.8823,
                        6.5238,
                        4.5424,
                        6.5286,
                        4.5424,
                        6.4137,
                        4.8775,
                        6.4137
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                    "spans": [
                        {
                            "offset": 61354,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1985",
                    "polygon": [
                        4.1356,
                        6.6578,
                        3.8101,
                        6.6626,
                        3.8053,
                        6.5573,
                        4.1308,
                        6.5525
                    ],
                    "spans": [
                        {
                            "offset": 61359,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "n=50",
                    "polygon": [
                        4.1451,
                        6.5238,
                        3.8101,
                        6.5286,
                        3.8053,
                        6.4233,
                        4.1451,
                        6.4137
                    ],
                    "spans": [
                        {
                            "offset": 61364,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1986",
                    "polygon": [
                        3.4176,
                        6.6722,
                        3.0921,
                        6.677,
                        3.0921,
                        6.5669,
                        3.4176,
                        6.5669
                    ],
                    "spans": [
                        {
                            "offset": 61369,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "n=103",
                    "polygon": [
                        3.4319,
                        6.5382,
                        3.0251,
                        6.543,
                        3.0251,
                        6.4281,
                        3.4271,
                        6.4281
                    ],
                    "spans": [
                        {
                            "offset": 61374,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1987",
                    "polygon": [
                        2.7044,
                        6.677,
                        2.355,
                        6.6818,
                        2.355,
                        6.5717,
                        2.7044,
                        6.5669
                    ],
                    "spans": [
                        {
                            "offset": 61380,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "n=112",
                    "polygon": [
                        2.714,
                        6.543,
                        2.2832,
                        6.543,
                        2.2832,
                        6.4281,
                        2.714,
                        6.4281
                    ],
                    "spans": [
                        {
                            "offset": 61385,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1988",
                    "polygon": [
                        1.9673,
                        6.677,
                        1.637,
                        6.6818,
                        1.637,
                        6.5765,
                        1.9673,
                        6.5717
                    ],
                    "spans": [
                        {
                            "offset": 61391,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "n=62",
                    "polygon": [
                        1.9768,
                        6.543,
                        1.6274,
                        6.543,
                        1.6274,
                        6.4329,
                        1.9768,
                        6.4329
                    ],
                    "spans": [
                        {
                            "offset": 61396,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1989",
                    "polygon": [
                        1.2253,
                        6.677,
                        0.9094,
                        6.6818,
                        0.9094,
                        6.5765,
                        1.2253,
                        6.5765
                    ],
                    "spans": [
                        {
                            "offset": 61401,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "n=184",
                    "polygon": [
                        1.2397,
                        6.543,
                        0.8329,
                        6.5477,
                        0.8329,
                        6.4377,
                        1.2397,
                        6.4281
                    ],
                    "spans": [
                        {
                            "offset": 61406,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "S. flavidus",
                    "polygon": [
                        6.7346,
                        6.1218,
                        5.8204,
                        6.1265,
                        5.8204,
                        5.9973,
                        6.7346,
                        5.9973
                    ],
                    "spans": [
                        {
                            "offset": 61412,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "4.39",
                    "polygon": [
                        4.8679,
                        6.117,
                        4.5376,
                        6.117,
                        4.5376,
                        6.0069,
                        4.8679,
                        6.0069
                    ],
                    "spans": [
                        {
                            "offset": 61424,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "135.17",
                    "polygon": [
                        4.2169,
                        6.1218,
                        3.7239,
                        6.1218,
                        3.7239,
                        6.0069,
                        4.2169,
                        6.0069
                    ],
                    "spans": [
                        {
                            "offset": 61429,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "6.73",
                    "polygon": [
                        3.4176,
                        6.1218,
                        3.0921,
                        6.1313,
                        3.0921,
                        6.0212,
                        3.4128,
                        6.0212
                    ],
                    "spans": [
                        {
                            "offset": 61436,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "89.39",
                    "polygon": [
                        2.7044,
                        6.1361,
                        2.288,
                        6.1361,
                        2.288,
                        6.026,
                        2.7044,
                        6.0212
                    ],
                    "spans": [
                        {
                            "offset": 61441,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "0.92",
                    "polygon": [
                        1.8907,
                        6.1361,
                        1.546,
                        6.1361,
                        1.546,
                        6.026,
                        1.8907,
                        6.026
                    ],
                    "spans": [
                        {
                            "offset": 61447,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1.26",
                    "polygon": [
                        1.2253,
                        6.1409,
                        0.8951,
                        6.1409,
                        0.8951,
                        6.026,
                        1.2301,
                        6.026
                    ],
                    "spans": [
                        {
                            "offset": 61452,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "(1.48)",
                    "polygon": [
                        4.9301,
                        5.983,
                        4.4658,
                        5.983,
                        4.4658,
                        5.8537,
                        4.9301,
                        5.8537
                    ],
                    "spans": [
                        {
                            "offset": 61457,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(26.00)",
                    "polygon": [
                        4.193,
                        5.9877,
                        3.6617,
                        5.9877,
                        3.6617,
                        5.8537,
                        4.193,
                        5.8537
                    ],
                    "spans": [
                        {
                            "offset": 61464,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "(2.29)",
                    "polygon": [
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                        3.0347,
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                        3.0347,
                        5.8633,
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                    ],
                    "spans": [
                        {
                            "offset": 61472,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(18.42)",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 61479,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "(7.94)",
                    "polygon": [
                        1.9529,
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                    "spans": [
                        {
                            "offset": 61487,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(0.81)",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 61494,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "S. mystinus",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 61501,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "4.89",
                    "polygon": [
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                        5.8394,
                        4.5233,
                        5.7341,
                        4.8727,
                        5.7341
                    ],
                    "spans": [
                        {
                            "offset": 61513,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "117.63",
                    "polygon": [
                        4.2074,
                        5.8441,
                        3.7096,
                        5.8394,
                        3.7096,
                        5.7293,
                        4.2074,
                        5.7341
                    ],
                    "spans": [
                        {
                            "offset": 61518,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "15.27",
                    "polygon": [
                        3.4942,
                        5.8537,
                        3.0825,
                        5.8537,
                        3.0825,
                        5.7436,
                        3.4894,
                        5.7436
                    ],
                    "spans": [
                        {
                            "offset": 61525,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "328.05",
                    "polygon": [
                        2.7762,
                        5.8585,
                        2.2688,
                        5.8633,
                        2.2688,
                        5.7484,
                        2.7762,
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                    ],
                    "spans": [
                        {
                            "offset": 61531,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "175.06",
                    "polygon": [
                        2.0391,
                        5.8633,
                        1.5365,
                        5.8633,
                        1.5365,
                        5.7532,
                        2.0391,
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                    "spans": [
                        {
                            "offset": 61538,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "7.13",
                    "polygon": [
                        1.2493,
                        5.8633,
                        0.9047,
                        5.8585,
                        0.9047,
                        5.7532,
                        1.2493,
                        5.7532
                    ],
                    "spans": [
                        {
                            "offset": 61545,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "(1.29)",
                    "polygon": [
                        4.9349,
                        5.7197,
                        4.4563,
                        5.7293,
                        4.4563,
                        5.5665,
                        4.9349,
                        5.5665
                    ],
                    "spans": [
                        {
                            "offset": 61550,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(19.50)",
                    "polygon": [
                        4.1882,
                        5.7149,
                        3.6473,
                        5.7101,
                        3.6473,
                        5.5809,
                        4.1882,
                        5.5857
                    ],
                    "spans": [
                        {
                            "offset": 61557,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "(3.81)",
                    "polygon": [
                        3.4846,
                        5.7245,
                        3.0203,
                        5.7341,
                        3.0203,
                        5.5761,
                        3.4846,
                        5.5761
                    ],
                    "spans": [
                        {
                            "offset": 61565,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(52.15)",
                    "polygon": [
                        2.757,
                        5.7293,
                        2.2162,
                        5.7293,
                        2.2162,
                        5.6,
                        2.757,
                        5.6
                    ],
                    "spans": [
                        {
                            "offset": 61572,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "(16.76)",
                    "polygon": [
                        2.0199,
                        5.7293,
                        1.4599,
                        5.7293,
                        1.4599,
                        5.6,
                        2.0199,
                        5.6
                    ],
                    "spans": [
                        {
                            "offset": 61580,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "(1.43)",
                    "polygon": [
                        1.2876,
                        5.7293,
                        0.8472,
                        5.7293,
                        0.8472,
                        5.6048,
                        1.2876,
                        5.6
                    ],
                    "spans": [
                        {
                            "offset": 61588,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "S. melanops",
                    "polygon": [
                        6.7251,
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                        5.8204,
                        5.557,
                        5.8204,
                        5.4325,
                        6.7251,
                        5.4421
                    ],
                    "spans": [
                        {
                            "offset": 61595,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "1.63",
                    "polygon": [
                        4.8679,
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                        4.528,
                        5.5713,
                        4.528,
                        5.4612,
                        4.8679,
                        5.4612
                    ],
                    "spans": [
                        {
                            "offset": 61607,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "4.40",
                    "polygon": [
                        4.0446,
                        5.5713,
                        3.7096,
                        5.5713,
                        3.7096,
                        5.466,
                        4.0446,
                        5.4612
                    ],
                    "spans": [
                        {
                            "offset": 61612,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "3.00",
                    "polygon": [
                        3.4271,
                        5.5761,
                        3.0873,
                        5.5809,
                        3.0873,
                        5.4708,
                        3.4271,
                        5.4708
                    ],
                    "spans": [
                        {
                            "offset": 61617,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "4.48",
                    "polygon": [
                        2.6182,
                        5.5857,
                        2.2784,
                        5.5857,
                        2.2784,
                        5.4756,
                        2.6134,
                        5.4756
                    ],
                    "spans": [
                        {
                            "offset": 61622,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "6.40",
                    "polygon": [
                        1.8763,
                        5.5905,
                        1.5365,
                        5.5905,
                        1.5365,
                        5.4756,
                        1.8763,
                        5.4756
                    ],
                    "spans": [
                        {
                            "offset": 61627,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "2.46",
                    "polygon": [
                        1.2349,
                        5.5905,
                        0.8903,
                        5.5953,
                        0.8903,
                        5.4756,
                        1.2349,
                        5.4708
                    ],
                    "spans": [
                        {
                            "offset": 61632,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "(0.52)",
                    "polygon": [
                        4.9349,
                        5.4421,
                        4.4467,
                        5.4421,
                        4.4467,
                        5.2841,
                        4.9349,
                        5.2889
                    ],
                    "spans": [
                        {
                            "offset": 61637,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(1.17)",
                    "polygon": [
                        4.1116,
                        5.4421,
                        3.6473,
                        5.4421,
                        3.6473,
                        5.3033,
                        4.1116,
                        5.3081
                    ],
                    "spans": [
                        {
                            "offset": 61644,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(1.31)",
                    "polygon": [
                        3.4846,
                        5.4469,
                        3.0203,
                        5.4517,
                        3.0203,
                        5.3129,
                        3.4846,
                        5.3129
                    ],
                    "spans": [
                        {
                            "offset": 61651,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(1.70)",
                    "polygon": [
                        2.6852,
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                        5.466,
                        2.2066,
                        5.3033,
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                    "spans": [
                        {
                            "offset": 61658,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(1.95)",
                    "polygon": [
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                        1.4599,
                        5.4612,
                        1.4599,
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                    "spans": [
                        {
                            "offset": 61665,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(0.74)",
                    "polygon": [
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                        0.8329,
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                        5.3224
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                    "spans": [
                        {
                            "offset": 61672,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "Total",
                    "polygon": [
                        6.7298,
                        5.1597,
                        6.3086,
                        5.1645,
                        6.3086,
                        5.0448,
                        6.7251,
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                    "spans": [
                        {
                            "offset": 61679,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "10.91",
                    "polygon": [
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                        4.5233,
                        5.1645,
                        4.5233,
                        5.0496,
                        4.9349,
                        5.0496
                    ],
                    "spans": [
                        {
                            "offset": 61685,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "257.20",
                    "polygon": [
                        4.2074,
                        5.1645,
                        3.7143,
                        5.1693,
                        3.7143,
                        5.0544,
                        4.2074,
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                    "spans": [
                        {
                            "offset": 61691,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "24.97",
                    "polygon": [
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                        3.0059,
                        5.1788,
                        3.0059,
                        5.0688,
                        3.408,
                        5.064
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                    "spans": [
                        {
                            "offset": 61698,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "442.48",
                    "polygon": [
                        2.7714,
                        5.1836,
                        2.2736,
                        5.1836,
                        2.2736,
                        5.0688,
                        2.7714,
                        5.0688
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                    "spans": [
                        {
                            "offset": 61704,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "221.38",
                    "polygon": [
                        2.0391,
                        5.1884,
                        1.5365,
                        5.1884,
                        1.5365,
                        5.0735,
                        2.0391,
                        5.0688
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                    "spans": [
                        {
                            "offset": 61711,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "10.85",
                    "polygon": [
                        1.3019,
                        5.1884,
                        0.8855,
                        5.1884,
                        0.8855,
                        5.0688,
                        1.3067,
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                    "spans": [
                        {
                            "offset": 61718,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "(2.12)",
                    "polygon": [
                        4.9349,
                        5.0448,
                        4.4419,
                        5.0448,
                        4.4467,
                        4.8773,
                        4.9349,
                        4.8821
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                    "spans": [
                        {
                            "offset": 61724,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(35.38)",
                    "polygon": [
                        4.2121,
                        5.0496,
                        3.6378,
                        5.0496,
                        3.6378,
                        4.8821,
                        4.2121,
                        4.8821
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                    "spans": [
                        {
                            "offset": 61731,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "(5.17)",
                    "polygon": [
                        3.4032,
                        5.0544,
                        2.9246,
                        5.0592,
                        2.9294,
                        4.8917,
                        3.4032,
                        4.8964
                    ],
                    "spans": [
                        {
                            "offset": 61739,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "(66.72)",
                    "polygon": [
                        2.7714,
                        5.064,
                        2.13,
                        5.0592,
                        2.13,
                        4.8917,
                        2.7714,
                        4.8964
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                    "spans": [
                        {
                            "offset": 61746,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "(22.55)",
                    "polygon": [
                        2.0151,
                        5.0592,
                        1.4647,
                        5.064,
                        1.4647,
                        4.8964,
                        2.0151,
                        4.8964
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                    "spans": [
                        {
                            "offset": 61754,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "(E. Hobson, FTS 556-0565)",
                    "polygon": [
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                        4.6045,
                        5.1072,
                        4.4417,
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                        {
                            "offset": 61762,
                            "length": 25
                        }
                    ]
                },
                {
                    "content": "Trends in Sablefish Abundance and Diet with",
                    "polygon": [
                        6.7921,
                        4.0062,
                        4.0111,
                        4.0158,
                        4.0111,
                        3.8626,
                        6.7921,
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                        {
                            "offset": 61788,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "Depth and Time of Day",
                    "polygon": [
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                        3.8578,
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                        6.7969,
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                    "spans": [
                        {
                            "offset": 61832,
                            "length": 21
                        }
                    ]
                },
                {
                    "content": "Sablefish (Anoplopoma fimbria) data from",
                    "polygon": [
                        6.6245,
                        3.5946,
                        3.9489,
                        3.6041,
                        3.9489,
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                    "spans": [
                        {
                            "offset": 61854,
                            "length": 40
                        }
                    ]
                },
                {
                    "content": "1987 and 1988 SWFC Jordan cruises off central",
                    "polygon": [
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                        {
                            "offset": 61895,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "California show two trends: 1) changes with",
                    "polygon": [
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                        3.9393,
                        3.1159,
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                    "spans": [
                        {
                            "offset": 61941,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "depth, and 2) changes with the daily-24 hour cycle.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 61985,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "Fishery Biologists Peter Adams and Wayne",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 62037,
                            "length": 40
                        }
                    ]
                },
                {
                    "content": "Samiere of the Groundfish Communities Inves-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 62078,
                            "length": 44
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                    ]
                },
                {
                    "content": "tigations have identified these basic trends in",
                    "polygon": [
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                        2.6134,
                        3.9441,
                        2.4554,
                        6.7873,
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                    "spans": [
                        {
                            "offset": 62123,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "sablefish population abundance and diet using",
                    "polygon": [
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                        3.9393,
                        2.2831,
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                    "spans": [
                        {
                            "offset": 62171,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "trawl and stomach contents data. Trawl abun-",
                    "polygon": [
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                        2.2783,
                        3.9393,
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                    "spans": [
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                            "offset": 62217,
                            "length": 44
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                    ]
                },
                {
                    "content": "dance data (Figure 1) shows an increase in number",
                    "polygon": [
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                            "offset": 62262,
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                    ]
                },
                {
                    "content": "of sablefish both with increasing depth and during",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 62312,
                            "length": 50
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                    ]
                },
                {
                    "content": "the 0200 to 1000 time strata. Sablefish are not only",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 62363,
                            "length": 52
                        }
                    ]
                },
                {
                    "content": "more abundant with depth, but also have an in-",
                    "polygon": [
                        6.7825,
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                    "spans": [
                        {
                            "offset": 62416,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "creasing trend of average size with depth (Figure",
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                            "offset": 62463,
                            "length": 49
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                    ]
                },
                {
                    "content": "2). The low or level abundances of sablefish in",
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                        3.9249,
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                    "spans": [
                        {
                            "offset": 62513,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "72.4",
                    "polygon": [
                        1.7423,
                        3.8865,
                        1.5843,
                        3.8865,
                        1.5843,
                        3.8195,
                        1.7423,
                        3.8195
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                    "spans": [
                        {
                            "offset": 62561,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "40.9",
                    "polygon": [
                        2.2066,
                        3.652,
                        2.0486,
                        3.652,
                        2.0486,
                        3.5898,
                        2.2066,
                        3.5898
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                    "spans": [
                        {
                            "offset": 62566,
                            "length": 4
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                    ]
                },
                {
                    "content": "AVE. NUMBER",
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                        3.2643,
                        3.3266,
                        3.2643,
                        3.3218,
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                    "spans": [
                        {
                            "offset": 62571,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "38.2",
                    "polygon": [
                        2.8719,
                        3.1542,
                        2.7092,
                        3.1542,
                        2.7092,
                        3.0872,
                        2.8719,
                        3.092
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                    "spans": [
                        {
                            "offset": 62583,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "27",
                    "polygon": [
                        1.2206,
                        3.0489,
                        1.144,
                        3.0489,
                        1.144,
                        2.9819,
                        1.2253,
                        2.9867
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                    "spans": [
                        {
                            "offset": 62588,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "11.8",
                    "polygon": [
                        2.714,
                        2.958,
                        2.556,
                        2.9628,
                        2.556,
                        2.9053,
                        2.714,
                        2.9053
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                    "spans": [
                        {
                            "offset": 62591,
                            "length": 4
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                    ]
                },
                {
                    "content": "12.7",
                    "polygon": [
                        3.2644,
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                        3.1208,
                        2.8192,
                        3.1208,
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                {
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                {
                    "content": "17",
                    "polygon": [
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                    "polygon": [
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                    "spans": [
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                {
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                    "content": "AVERAGE LENGTH (mm)",
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                    "content": "600",
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                {
                    "content": "611.3",
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                {
                    "content": "(9.2)",
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                    "content": "550",
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                    "content": "560.6",
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                {
                    "content": "(3.5)",
                    "polygon": [
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                            "offset": 62785,
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                    ]
                },
                {
                    "content": "546.9",
                    "polygon": [
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                {
                    "content": "(2.8)",
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                },
                {
                    "content": "500",
                    "polygon": [
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                },
                {
                    "content": "(3.5)",
                    "polygon": [
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                },
                {
                    "content": "499.8",
                    "polygon": [
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                },
                {
                    "content": "450",
                    "polygon": [
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                    ]
                },
                {
                    "content": "452.6",
                    "polygon": [
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                    ]
                },
                {
                    "content": "(6.7)",
                    "polygon": [
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                    "content": "380.4",
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                {
                    "content": "(6.1)",
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                {
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                    "content": "300",
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                },
                {
                    "content": "T",
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                    "spans": [
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                },
                {
                    "content": "200",
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                    "content": "550",
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                    "content": "900",
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                },
                {
                    "content": "1 100",
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                    "content": "Figure 2. Average length of sablefish Anoplopoma",
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                    "content": "fimbria captured during 1987 and 1988 slope sur-",
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                {
                    "content": "vey cruises, by sampling depth.",
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                    "content": "366-732 m depth strata also occur with the other",
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                },
                {
                    "content": "common fish species. The increase in abundance",
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                },
                {
                    "content": "related to the 0200-1000 time strata occurs in all",
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                    "content": "depth strata, but is less prominent in the 366-732",
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                },
                {
                    "content": "m strata. The sample size is not large enough to",
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                {
                    "content": "further subdivide the time strata, but there are",
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                {
                    "content": "indications that the increase in the 0200-1000 time",
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                },
                {
                    "content": "strata is occurring just after sunrise (approximately",
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                },
                {
                    "content": "0600-1000).",
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                    ]
                },
                {
                    "content": "Sablefish have two distinct feeding modes; ben-",
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                    ]
                },
                {
                    "content": "thic and pelagic. The benthic mode consists of",
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                            "length": 46
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                    ]
                },
                {
                    "content": "feeding on ophiuroids, polychaetes, and bottom",
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                    ]
                },
                {
                    "content": "fishes, principally longspine thornyheads, Sebas-",
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                },
                {
                    "content": "tolobus altivelis. The pelagic feeding mode con-",
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                    ]
                },
                {
                    "content": "sists of heteropods, thaliaceans, and pelagic fishes",
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                {
                    "content": "such as myctophids, and Pacific whiting. In-",
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                {
                    "content": "dividual sablefish may be feeding in either or both",
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                    ]
                },
                {
                    "content": "modes.",
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                },
                {
                    "content": "90",
                    "polygon": [
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                            "length": 2
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                },
                {
                    "content": "BO",
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                        7.8796,
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                    "spans": [
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                {
                    "content": "FISH SPECIES",
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                    ]
                },
                {
                    "content": "AVERAGE GUT VOLUME",
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                {
                    "content": "70",
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                {
                    "content": "XXX BENTHIC",
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                {
                    "content": "60",
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                {
                    "content": "ZZZ PELAGIC",
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                {
                    "content": "50",
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                    ]
                },
                {
                    "content": "40",
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                    ]
                },
                {
                    "content": "30",
                    "polygon": [
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                {
                    "content": "20",
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                    ]
                },
                {
                    "content": "10 .",
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                    "content": "0",
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                    "content": "0000",
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                {
                    "content": "to",
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                {
                    "content": "0600",
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                {
                    "content": "0600",
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                    "content": "to",
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                },
                {
                    "content": "0900",
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                },
                {
                    "content": "0900",
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                {
                    "content": "10",
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                    "spans": [
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                    ]
                },
                {
                    "content": "1200",
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                },
                {
                    "content": "1200",
                    "polygon": [
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                {
                    "content": "to",
                    "polygon": [
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                    "spans": [
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                },
                {
                    "content": "1500",
                    "polygon": [
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                },
                {
                    "content": "1500",
                    "polygon": [
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                },
                {
                    "content": "to",
                    "polygon": [
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                    "spans": [
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                            "length": 2
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                    ]
                },
                {
                    "content": "1800",
                    "polygon": [
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                },
                {
                    "content": "1800",
                    "polygon": [
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                            "length": 4
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                    ]
                },
                {
                    "content": "10",
                    "polygon": [
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                {
                    "content": "2400",
                    "polygon": [
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                {
                    "content": "TIME",
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                    "content": "Figure 3. Average gut volumes for major prey",
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                    "content": "groups of sablefish.",
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                    "content": "Sablefish diet also shows trends with depth and",
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                {
                    "content": "time of day (Figure 3). Fishes increase as part of",
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                {
                    "content": "the diet from 30-50 percent over a depth range of",
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                {
                    "content": "183-1281 m. The timing of certain prey taken",
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                {
                    "content": "from pelagic habitats shows a strong decline in the",
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                    "content": "diet during morning and mid-day (approximately",
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                {
                    "content": "0900-1500).",
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                    "content": "Sablefish have a strong pelagic feeding com-",
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                {
                    "content": "ponent. This means that a substantial portion of",
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                    "content": "the population will be off-bottom and unavailable",
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                {
                    "content": "to bottom trawl gear. This has implications for",
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                {
                    "content": "estimating population size, especially since the",
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                    "content": "timing of this off-bottom behavior is not uniform.",
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                {
                    "content": "(P. Adams, FTS 556-0565).",
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                {
                    "content": "GROUNDFISH PHYSIOLOGICAL",
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                    "content": "ECOLOGY INVESTIGATIONS",
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                    "content": "Rockfish Conference",
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                    "content": "Fishery Biologists Drs. Jeannette Whipple and",
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                    "content": "Mickey Eldridge attended a joint Japanese-",
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                    "content": "American conference on reproduction and early",
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                    "content": "life history of rockfishes (Genus Sebastes), June",
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                {
                    "content": "26- July 1, at the University of Hawaii (see p. 6).",
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                    "content": "Eldridge presented a paper entitled \"Reproductive",
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                    "content": "performances of yellowtail rockfish, Sebastes",
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                    "content": "flavidus\" which included much of the research",
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                    "content": "findings from over 3 years of studies on the yel-",
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                    "content": "lowtail rockfish from Cordell Bank, California.",
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                    "content": "seamount habitat. In order to further characterize",
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                    "content": "this population and to relate it to other yellowtail",
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                    "content": "rockfish populations throughout its range, an ex-",
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                    "content": "panded sampling program is planned that will pro-",
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                    "content": "vide the opportunity to compare the Cordell Bank",
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                    "content": "Sound, the central Washington coast, and Heceta",
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                    "confidence": 0.991,
                    "span": {
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                    }
                },
                {
                    "content": "Kimbrell,",
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                    "confidence": 0.992,
                    "span": {
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                },
                {
                    "content": "William",
                    "polygon": [
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                    "confidence": 0.993,
                    "span": {
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                    }
                },
                {
                    "content": "C.",
                    "polygon": [
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                    "confidence": 0.994,
                    "span": {
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                    }
                },
                {
                    "content": "Flerx",
                    "polygon": [
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                    "confidence": 0.992,
                    "span": {
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                        "length": 5
                    }
                },
                {
                    "content": "and",
                    "polygon": [
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                    "confidence": 0.998,
                    "span": {
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                    }
                },
                {
                    "content": "Richard",
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                    "confidence": 0.995,
                    "span": {
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                    }
                },
                {
                    "content": "D.",
                    "polygon": [
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                    "confidence": 0.995,
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                },
                {
                    "content": "Methot.",
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                    "confidence": 0.992,
                    "span": {
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                },
                {
                    "content": "1989.",
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                    "confidence": 0.995,
                    "span": {
                        "offset": 70310,
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                },
                {
                    "content": "The",
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                    "confidence": 0.998,
                    "span": {
                        "offset": 70316,
                        "length": 3
                    }
                },
                {
                    "content": "1987-88",
                    "polygon": [
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                    "confidence": 0.993,
                    "span": {
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                },
                {
                    "content": "demersal",
                    "polygon": [
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                    "confidence": 0.992,
                    "span": {
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                },
                {
                    "content": "fish",
                    "polygon": [
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                    "confidence": 0.992,
                    "span": {
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                },
                {
                    "content": "surveys",
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                    "confidence": 0.993,
                    "span": {
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                },
                {
                    "content": "off",
                    "polygon": [
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                    "confidence": 0.998,
                    "span": {
                        "offset": 70350,
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                },
                {
                    "content": "central",
                    "polygon": [
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                    "confidence": 0.994,
                    "span": {
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                        "length": 7
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                },
                {
                    "content": "California",
                    "polygon": [
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                    "confidence": 0.992,
                    "span": {
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                },
                {
                    "content": "(34°30'N",
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                    "confidence": 0.554,
                    "span": {
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                },
                {
                    "content": "to",
                    "polygon": [
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                    "confidence": 0.997,
                    "span": {
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                },
                {
                    "content": "36'30'N).",
                    "polygon": [
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                    "confidence": 0.734,
                    "span": {
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                },
                {
                    "content": "U.S.",
                    "polygon": [
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                },
                {
                    "content": "Dep.",
                    "polygon": [
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                    "confidence": 0.987,
                    "span": {
                        "offset": 70400,
                        "length": 4
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                },
                {
                    "content": "Commer.,",
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                    "confidence": 0.992,
                    "span": {
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                },
                {
                    "content": "NOAA",
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                },
                {
                    "content": "Tech.",
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                    }
                },
                {
                    "content": "Memo.,",
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                },
                {
                    "content": "NOAA-TM-NMFS-SWFC-133,",
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                    "confidence": 0.989,
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                },
                {
                    "content": "11",
                    "polygon": [
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                    "confidence": 0.986,
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                        "length": 2
                    }
                },
                {
                    "content": "p.",
                    "polygon": [
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                    "confidence": 0.992,
                    "span": {
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                },
                {
                    "content": "18",
                    "polygon": [
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                    "confidence": 0.999,
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            ],
            "lines": [
                {
                    "content": "diseases and parasites, gonadal histology, and",
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                    ]
                },
                {
                    "content": "general measures of condition. Fecundity studies",
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                    "content": "that examine the factors relating to reproductive",
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                    ]
                },
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                    "content": "and adaptive capacities will also be part of this",
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                },
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                    "content": "research. The program will begin in November",
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                },
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                    "content": "and sampling will be done on both chartered and",
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                    ]
                },
                {
                    "content": "commercial vessels. (J. Whipple, FTS 556-0565)",
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                    "content": "GROUNDFISH ANALYSIS",
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                    "content": "INVESTIGATIONS",
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                    "content": "Widow Rockfish Stock Assessment Draft",
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                    "content": "Prepared",
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                    "content": "Fishery Biologists Joseph Hightower and Wil-",
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                    "content": "liam Lenarz of the Groundfish Analysis Investiga-",
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                    "content": "tions prepared a draft of the annual stock assessment",
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                    "content": "report of the widow rockfish fishery. Their assess-",
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                    "content": "ment utilized catch-at-age data collected from the",
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                    "content": "fishery between 1980 and 1988. Deterministic",
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                    "content": "cohort analysis (computer program GENCOH) and",
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                    "content": "stochastic catch at age analysis (computer program",
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                    "content": "Cagean and the stock synthesis model of Methot)",
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                    "content": "were used to analyze the data.",
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                    "content": "The deterministic and stochastic approaches",
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                    "content": "have different strengths and weaknesses. The deter-",
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                    "content": "ministic approach assumes that catches-at-age are",
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                    "content": "measured without error, which is unlikely, and it is",
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                    "content": "necessary to provide starting values of fishing mor-",
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                    "content": "tality. However the deterministic approach allows",
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                    "content": "age specific selectivity to vary from year to year.",
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                    "content": "The stochastic approaches do not allow age specific",
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                    "content": "selectivity to vary from year to year and also require",
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                    "content": "some constraints on starting values of fishing mor-",
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                    "spans": [
                        {
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                    ]
                },
                {
                    "content": "tality. However the stochastic approaches fit fewer",
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                },
                {
                    "content": "parameters and allow catch-at-age to be measured",
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                },
                {
                    "content": "with error. The stock synthesis model allows age",
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                },
                {
                    "content": "specific selectivity curves to vary from area to area.",
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                },
                {
                    "content": "This feature was explored for three separate areas.",
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                },
                {
                    "content": "While the results were promising, the practical use",
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                {
                    "content": "of area specific selectivity curves awaits further",
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                },
                {
                    "content": "work.",
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                    ]
                },
                {
                    "content": "While there is some uncertainty in the strength of",
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                },
                {
                    "content": "recent year-classes and current biomass, results of",
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                },
                {
                    "content": "the assessment indicate that biomass is lower than",
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                },
                {
                    "content": "in previous years and that the harvest should be",
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                },
                {
                    "content": "reduced. The lower biomass is the result of the",
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                },
                {
                    "content": "normal fishing down process and the entry of two",
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                    ]
                },
                {
                    "content": "very weak year-classes into the fishery. The",
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                    ]
                },
                {
                    "content": "biomass is estimated to be close to the maximum",
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                    ]
                },
                {
                    "content": "sustainable yield level. The authors recommend",
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                        }
                    ]
                },
                {
                    "content": "that the 1990 harvest be set at 7,900 t. This is lower",
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                        }
                    ]
                },
                {
                    "content": "than the expected 1989. harvest, 12,400 t, and the",
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                    "spans": [
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                            "offset": 68555,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "1984-88 average, 10,000 t.",
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                            "offset": 68606,
                            "length": 26
                        }
                    ]
                },
                {
                    "content": "The report will serve as the technical basis for",
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                            "offset": 68633,
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                    ]
                },
                {
                    "content": "the recommendation of allowable biological catch",
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                    ]
                },
                {
                    "content": "(ABC) by the Groundfish Management Team to",
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                    ]
                },
                {
                    "content": "the Pacific Fishery Management Council after",
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                    "spans": [
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                    ]
                },
                {
                    "content": "review. The review process began in Tiburon,",
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                    ]
                },
                {
                    "content": "August 7-9, when Hightower and Lenarz",
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                },
                {
                    "content": "presented the report to the Ad Hoc Stock Assess-",
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                    ]
                },
                {
                    "content": "ment Committee of the team. Hightower also",
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                },
                {
                    "content": "presented this assessment to the team later in the",
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                            "length": 50
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                    ]
                },
                {
                    "content": "week. The report has been distributed to the",
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                    ]
                },
                {
                    "content": "Scientific and Statistical Committee of the Coun-",
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                            "offset": 69090,
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                    ]
                },
                {
                    "content": "cil for further review. The team will make its",
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                },
                {
                    "content": "recommendation for ABC during the November",
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                    ]
                },
                {
                    "content": "Council meeting. (J. Hightower, FTS 556-0565)",
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                    ]
                },
                {
                    "content": "INFORMATION",
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                            "length": 11
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                    ]
                },
                {
                    "content": "TECHNOLOGY SERVICES",
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                },
                {
                    "content": "Inspector General Reviews Information",
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                    ]
                },
                {
                    "content": "Technology 1995 Project",
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                },
                {
                    "content": "A special unit of the Commerce Inspector",
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                    "spans": [
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                    ]
                },
                {
                    "content": "General's (IG) office has been reviewing future",
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                    "spans": [
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                    ]
                },
                {
                    "content": "high-tech procurements, including major com-",
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                    "spans": [
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                    ]
                },
                {
                    "content": "puter systems within NMFS. Two of their",
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                },
                {
                    "content": "specialists were appointed to survey the NMFS",
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                },
                {
                    "content": "Information Technology (IT) project, and have",
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                },
                {
                    "content": "been gathering information about regional com-",
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                            "offset": 69636,
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                },
                {
                    "content": "puter resources, planning processes for the",
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                    "spans": [
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                },
                {
                    "content": "proposed NMFS-wide IT-95 computer system,",
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                            "offset": 69727,
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                    ]
                },
                {
                    "content": "and the Request for Proposal for the system.",
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                    "spans": [
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                            "offset": 69769,
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                },
                {
                    "content": "Dorothy Roll, Computer Systems Analyst, has",
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                },
                {
                    "content": "been assisting the Washington office in these in-",
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                },
                {
                    "content": "teractions with the IG. A report on the investiga-",
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                            "offset": 69908,
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                {
                    "content": "tion was released by the IG in August, in which",
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                    ]
                },
                {
                    "content": "the suitability of the IT-95 system project was",
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                },
                {
                    "content": "questioned. NMFS and the IG office are now",
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                            "offset": 70055,
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                },
                {
                    "content": "negotiating the issue, and until further notice, action",
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                },
                {
                    "content": "on the IT-95 project is on hold. (D. Roll, FTS",
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                },
                {
                    "content": "893-7057)",
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                },
                {
                    "content": "PUBLICATIONS",
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                },
                {
                    "content": "Published",
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                    "confidence": 0.992,
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                    }
                },
                {
                    "content": "the",
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                {
                    "content": "tropical",
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                {
                    "content": "19",
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            "lines": [
                {
                    "content": "Mason, Janet E. 1989. The southern California jack",
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                    "spans": [
                        {
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                    ]
                },
                {
                    "content": "mackerel fishery, and the age and length composi-",
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                {
                    "content": "tion of the catch for the 1972-73 through 1983-84",
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                },
                {
                    "content": "seasons. Calif. Dep. Fish and Game, Mar. Res.",
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                            "offset": 70615,
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                    ]
                },
                {
                    "content": "Tech. Rep. 58, 38 p.",
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                    "spans": [
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                    ]
                },
                {
                    "content": "Moffitt, Robert B., Frank A. Parrish and Jeffrey J.",
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                {
                    "content": "Polovina. 1989. Community structure, biomass",
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                },
                {
                    "content": "and productivity of deepwater artificial reefs in",
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                    "spans": [
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                        }
                    ]
                },
                {
                    "content": "Hawaii. Bull. Mar. Sci. 44:616-630.",
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                {
                    "content": "Artificial reef modules constructed of plastic or",
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                },
                {
                    "content": "concrete were deployed at three sites in deep water",
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                },
                {
                    "content": "on Penguin Bank, Hawaii, in October 1985. Fish",
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                    "content": "communities were censused shortly after deploy-",
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                {
                    "content": "ment and irregularly thereafter, by using the manned",
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                },
                {
                    "content": "submersibles Makalii and Pisces V. In determining",
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                            "offset": 71115,
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                },
                {
                    "content": "the aggregated biomass of transient fish species,",
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                {
                    "content": "depth of reef placement was more important than the",
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                {
                    "content": "reef's structural material and configuration. Con-",
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                            "offset": 71267,
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                },
                {
                    "content": "versely, reef structural material and configuration",
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                {
                    "content": "were more important than depth in determining the",
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                            "offset": 71370,
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                    ]
                },
                {
                    "content": "species diversity, richness and perhaps biomass of",
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                            "offset": 71420,
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                    ]
                },
                {
                    "content": "resident species attracted to these deepwater artifi-",
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                    "spans": [
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                            "offset": 71471,
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                },
                {
                    "content": "cial reefs. Results suggest that small-scale, deep-",
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                            "offset": 71525,
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                {
                    "content": "water artificial reefs in Pacific island areas function",
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                            "offset": 71577,
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                {
                    "content": "primarily as devices for aggregating fish rather than",
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                    "spans": [
                        {
                            "offset": 71633,
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                {
                    "content": "increasing fish production and that reef configura-",
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                            "offset": 71687,
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                },
                {
                    "content": "tion and structural material are not very important",
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                },
                {
                    "content": "in aggregating transient species.",
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                            "offset": 71791,
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                },
                {
                    "content": "Polovina, Jeffrey J. 1989. A debate on responsible",
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                    "spans": [
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                            "offset": 71825,
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                },
                {
                    "content": "artificial reef development. Part III. Should anyone",
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                    "spans": [
                        {
                            "offset": 71876,
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                    ]
                },
                {
                    "content": "build reefs? Bull. Mar. Sci. 44:1056-1057 (Note).",
                    "polygon": [
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                            "offset": 71929,
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                },
                {
                    "content": "Polovina, Jeffrey J. and Ichiro Sakai. 1989. Impacts of",
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                            "offset": 71979,
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                    ]
                },
                {
                    "content": "artificial reefs on fishery production in Shimamaki,",
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                    "spans": [
                        {
                            "offset": 72035,
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                        }
                    ]
                },
                {
                    "content": "Japan. Bull. Mar. Sci. 44:997-1003.",
                    "polygon": [
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                            "offset": 72088,
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                    ]
                },
                {
                    "content": "The role of artificial reefs as a tool for increasing",
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                        {
                            "offset": 72124,
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                        }
                    ]
                },
                {
                    "content": "fishery production rather than just aggregating fish",
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                },
                {
                    "content": "is addressed for two fisheries, octopus, Octopus",
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                    ]
                },
                {
                    "content": "dofleini, and flatfish, (Pleuronectidae), near",
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                    "content": "Shimamaki, Japan. The time series of catch and",
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                {
                    "content": "effort data examined covers periods before and after",
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                {
                    "content": "two adjacent fishing grounds received 8,645 and",
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                {
                    "content": "40,766 m3 of artificial reef. Octopus catches were",
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                            "offset": 72475,
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                    ]
                },
                {
                    "content": "increased by 4% per 1,000 m3 of artificial reef or by",
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                        {
                            "offset": 72526,
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                },
                {
                    "content": "an average of 1.8 kg/m3 of artificial reef. Artificial",
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                            "offset": 72580,
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                {
                    "content": "reefs aggregated flatfishes but did not increase",
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                            "offset": 72635,
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                },
                {
                    "content": "catches in the regions. A survey of fishermen in the",
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                            "offset": 72684,
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                },
                {
                    "content": "two regions revealed that the reefs generally are",
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                {
                    "content": "considered beneficial.",
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                        {
                            "offset": 72787,
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                        }
                    ]
                },
                {
                    "content": "Ralston, Stephen and Happy A. Williams.",
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                        {
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                    ]
                },
                {
                    "content": "1989.",
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                        {
                            "offset": 72850,
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                    ]
                },
                {
                    "content": "Numerical integration of daily growth increments:",
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                    "spans": [
                        {
                            "offset": 72856,
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                },
                {
                    "content": "An efficient means of ageing tropical fishes for",
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                },
                {
                    "content": "stock assessment. Fish. Bull., U.S. 87:1-16.",
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                    "content": "For an objective, cost-effective ageing methodology",
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                {
                    "content": "applicable to tropical species, a new approach to",
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                },
                {
                    "content": "estimating parameters of the von Bertalanffy growth",
                    "polygon": [
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                        {
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                            "length": 51
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                    ]
                },
                {
                    "content": "equation through the study of otolith microstructure",
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                {
                    "content": "was developed and applied to Pristipomoides",
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                },
                {
                    "content": "zonatus, a deepwater snapper widely distributed",
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                {
                    "content": "throughout the Indo-Pacific region. The average",
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                    ]
                },
                {
                    "content": "width of sagittal daily growth increments was used",
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                    "spans": [
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                            "offset": 73347,
                            "length": 50
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                    ]
                },
                {
                    "content": "to measure otolith growth rate, which was then",
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                        {
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                    ]
                },
                {
                    "content": "related to the size of the otolith. The data were",
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                    "spans": [
                        {
                            "offset": 73445,
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                },
                {
                    "content": "numerically integrated, providing estimates of age",
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                    "spans": [
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                            "offset": 73495,
                            "length": 50
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                    ]
                },
                {
                    "content": "(in years) at regular 500-um increments to otolith",
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                    "spans": [
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                            "offset": 73546,
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                },
                {
                    "content": "length, which was then used to predict fork length",
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                            "offset": 73597,
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                },
                {
                    "content": "(FL mm) at age with regression analysis. The data",
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                    "spans": [
                        {
                            "offset": 73648,
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                },
                {
                    "content": "were fitted to the von Bertalanffy growth model,",
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                            "offset": 73698,
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                {
                    "content": "resulting in",
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                        {
                            "offset": 73747,
                            "length": 12
                        }
                    ]
                },
                {
                    "content": "FL=442 (1-exp(-0.234(Age+0.892))).",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 73760,
                            "length": 34
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                    ]
                },
                {
                    "content": "The method was critically examined and validated",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 73795,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "through the study of 1) annual hyaline and opaque",
                    "polygon": [
                        4.265,
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                        3.1526,
                        6.8845,
                        3.2965,
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                    "spans": [
                        {
                            "offset": 73844,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "markings that appear in the otoliths, 2) Monte Carlo",
                    "polygon": [
                        4.265,
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                        3.2965,
                        6.8749,
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                    "spans": [
                        {
                            "offset": 73894,
                            "length": 52
                        }
                    ]
                },
                {
                    "content": "simulation, 3) length-frequency analysis, 4) ex-",
                    "polygon": [
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                        6.8797,
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                    "spans": [
                        {
                            "offset": 73947,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "amination of spawning seasonality relative to back-",
                    "polygon": [
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                        6.8797,
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                    "spans": [
                        {
                            "offset": 73996,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "calculated birth date taken from the time of first",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 74048,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "annulus formation, and 5) empirical comparisons",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 74099,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "with the literature concerning snapper growth.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 74147,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "Seaman, William, Jr., Raymond M. Buckley and Jeffrey",
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                        6.8701,
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                    ],
                    "spans": [
                        {
                            "offset": 74194,
                            "length": 52
                        }
                    ]
                },
                {
                    "content": "J. Polovina. 1989. Advances in knowledge and",
                    "polygon": [
                        4.265,
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                        6.8749,
                        4.4625,
                        6.8749,
                        4.6017,
                        4.265,
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                    "spans": [
                        {
                            "offset": 74247,
                            "length": 44
                        }
                    ]
                },
                {
                    "content": "priorities for research, technology and management",
                    "polygon": [
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                        6.8797,
                        4.7456,
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                    ],
                    "spans": [
                        {
                            "offset": 74292,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "related to artificial aquatic habitats. Bull. Mar. Sci.",
                    "polygon": [
                        4.2602,
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                    "spans": [
                        {
                            "offset": 74343,
                            "length": 55
                        }
                    ]
                },
                {
                    "content": "44:527-532.",
                    "polygon": [
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                        4.8944,
                        4.8887,
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                        4.2602,
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                    "spans": [
                        {
                            "offset": 74399,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "Seki, Michael P. and Michael W. Callahan. 1988. The",
                    "polygon": [
                        4.0107,
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                        5.1823,
                        6.8749,
                        5.3262,
                        4.0107,
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                    "spans": [
                        {
                            "offset": 74411,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "feeding habits of two deep slope snappers, Pris-",
                    "polygon": [
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                        6.8653,
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                    "spans": [
                        {
                            "offset": 74463,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "tipomoides zonatus and P. auricilla, at Pathfinder",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 74512,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "Reef, Mariana Archipelago. Fish. Bull., U.S.",
                    "polygon": [
                        4.2554,
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                    "spans": [
                        {
                            "offset": 74563,
                            "length": 44
                        }
                    ]
                },
                {
                    "content": "86:807-810.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 74608,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "Ueber, Edward. 1989. Xanthic, gigantic China rock-",
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                        4.0012,
                        6.0604,
                        6.8605,
                        6.07,
                        6.8605,
                        6.2092,
                        4.0012,
                        6.1948
                    ],
                    "spans": [
                        {
                            "offset": 74620,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "fish. Calif. Fish and Game 75(1):47-48.",
                    "polygon": [
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                        6.2092,
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                    ],
                    "spans": [
                        {
                            "offset": 74671,
                            "length": 39
                        }
                    ]
                },
                {
                    "content": "Approved by Science and Research Director,",
                    "polygon": [
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                        6.731,
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                        {
                            "offset": 74711,
                            "length": 42
                        }
                    ]
                },
                {
                    "content": "SWR",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 74754,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "Bakun, Andrew. Global warming and the coastal up-",
                    "polygon": [
                        3.9964,
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                        6.8509,
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                    "spans": [
                        {
                            "offset": 74758,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "welling system. For publication in Provocative",
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                    "spans": [
                        {
                            "offset": 74808,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "Statement, Greenhouse Effects Workshop, Univer-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 74855,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "sity of California, Davis.",
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                        {
                            "offset": 74903,
                            "length": 26
                        }
                    ]
                },
                {
                    "content": "Bakun, Andrew. Global climate change and intensifica-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 74930,
                            "length": 53
                        }
                    ]
                },
                {
                    "content": "tion of coastal ocean upwelling systems. For con-",
                    "polygon": [
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                        7.8262,
                        6.8509,
                        7.9606,
                        4.241,
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                    ],
                    "spans": [
                        {
                            "offset": 74984,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "sideration for publication in Science.",
                    "polygon": [
                        4.241,
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                        7.9654,
                        6.1265,
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                        4.241,
                        8.0997
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                    "spans": [
                        {
                            "offset": 75034,
                            "length": 38
                        }
                    ]
                },
                {
                    "content": "Boehlert, George W., Muneharu Kusakari and Juro",
                    "polygon": [
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                        6.8509,
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                    "spans": [
                        {
                            "offset": 75073,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "Yamada. Oxygen consumption during gestation in",
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                    "spans": [
                        {
                            "offset": 75121,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "female Sebastes schlegeli and a comparison with",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 75168,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "embryonic oxygen requirements. U.S .- Japan",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 75216,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "Cooperative Seminar, Rockfishes of the Genus",
                    "polygon": [
                        4.2362,
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                        {
                            "offset": 75260,
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                    ]
                },
                {
                    "content": "Sebastes: Reproduction and Early Life History,",
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                        {
                            "offset": 75305,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "Honolulu, HI 96822-2396, 26- 30 June 1989. En-",
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                    "spans": [
                        {
                            "offset": 75352,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "vironmental Biology of Fishes.",
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                    ]
                },
                {
                    "content": "Cohen, Daniel M., Richard H. Rosenblatt and H. Geof-",
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                    ]
                },
                {
                    "content": "frey Moser. Biology and description of a bythitid",
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                    ]
                },
                {
                    "content": "fish from deep-sea thermal vents in the tropical",
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                {
                    "content": "19",
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            ],
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        {
            "pageNumber": 22,
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                {
                    "content": "eastern",
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                    "content": "Pacific.",
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                    "content": "Deep Sea Research.",
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                    "content": "George W. Boehlert.",
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                    "content": "Ontogeny of the sodium",
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                {
                    "content": "pump in larval rockfish, Sebastes. For publication",
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                    "content": "in the Rockfish Symposium Papers -- Environmental",
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                {
                    "content": "Gerrodette, Tim and William G. Gilmartin.",
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                    "content": "Demographic consequences of changed pupping",
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                {
                    "content": "and hauling sites of the Hawaiian monk seal. For",
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                {
                    "content": "consideration for publication in Science.",
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                    "content": "Henderson, John R. Recent entanglements of Hawaiian",
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                {
                    "content": "monk seals in marine debris. For publication in the",
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                    "content": "Proceedings of the Second International Conference",
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                {
                    "content": "on Marine Debris.",
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                {
                    "content": "Holland, Kim, Richard Brill and Randolph K. C. Chang.",
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                {
                    "content": "Horizontal and vertical movements of Pacific blue",
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                    "content": "For publication in the Eighth Biennial Conference",
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                    "content": "on the Biology of Marine Mammals (Abstract).",
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                    "content": "Provocative Statement, Greenhouse Effects",
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                    "content": "Workshop, University of California, Davis.",
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                    "content": "1988 physical oceanographic observations in the",
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                    "content": "For consideration for publication in the North",
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                    "content": "Sebastes embryos, with special reference to the up-",
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                    "content": "take of exogenous nutrients. For publication in the",
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                {
                    "content": "ogy of Fishes.",
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                    "content": "Yoklavich, Mary M. and George W. Boehlert. Uptake",
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                    "content": "from tuna vessel observer data. SWFC Admin.",
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                    "content": "Rep., La Jolla, LJ-89-22, 24 p.",
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                {
                    "content": "Forney, Karin A., Doyle A. Hanan and Jay Barlow.",
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                    "content": "based on three years. SWFC Admin. Rep., La Jolla,",
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                {
                    "content": "LJ-89-20, 13 p.",
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                    "content": "SWFC Admin. Rep., Honolulu, H-89-9, 51 p.",
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            ],
            "content": "...... Alec D. MacCall, Acting"
        },
        {
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                    "length": 19
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            "content": "Tiburon, California"
        },
        {
            "spans": [
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            "content": "The Report of Activities of the Southwest Fisheries Center is compiled at La Jolla from material submitted by the Center's staff. To change the delivery address of the Report of Activities, or to cancel your subscription, please notify Lorraine C. Prescott , at P.O. Box 271, La Jolla, CA 92038. Telephone: (619) 546-7063."
        },
        {
            "spans": [
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            "content": "ANTARCTIC ECOSYSTEM RESEARCH GROUP"
        },
        {
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            "content": "La Jolla, California"
        },
        {
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            "content": "Review of Antarctic Ecosystem Research Plan Completed"
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            "content": "On July 11, 1989, the Advisory Panel to the Antarctic Ecosystem Research Group (AERG) was convened to provide advice to the Center Director concerning the direction of research to be completed by the U.S. Antarctic Marine Living Resources (AMLR) Program. The meeting was held at the U.S. State Department in Washington, DC. Members of the Panel included repre- sentatives of the State Department, Marine Mam- mal Commission, Environmental Defense Fund, National Science Foundation, and NOAA Fisheries Headquarters."
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        {
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            ],
            "content": "Dr. Rennie Holt, AERG Chief, summarized the criteria that were provided by the Panel and used to evaluate three alternative research strategies. All members felt that the proposed research should consider the likely budget level. In addi- tion, they expressed concern that there is insuffi- cient time between the beginning of the fiscal year (October 1) when funding becomes available and the beginning of the field season in late November to complete contracts and obtain equipment and supplies. They suggested that funding should be provided one year in advance."
        },
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            ],
            "content": "The members also felt that the research should meet research priorities set by the Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR). Research should also be done without duplicating research efforts of other nations and other U.S. research efforts. Finally, tasks for which the U.S. is uniquely qualified (e.g., collection of satellite imagery data) should be given priority."
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            "content": "The Panel reviewed a strategic planning docu- ment which presented three research alternatives plus basic \"core\" research which must be under- taken in conjunction with either of the three alter- natives. The proposed research plan was designed to support CCAMLR priorities which include active participation in the Fish Stock As-"
        },
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            "content": "sessment, Ecosystem Monitoring, and Krill Work- ing Groups. AMLR field research activities will focus on the Antarctic Peninsula which has been designated by CCAMLR as an area for con- centrated integrated studies. This area is impor- tant to commercial fisheries, is home to a high abundance of protected species, and offers the advantage of complementing other national and U.S. marine research efforts."
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            "content": "Based upon recommendations of the Advisory Panel, the AMLR research will consist of offshore sampling of prey and environmental conditions, coupled with land-based studies of predators during the austral summer to investigate factors influencing the reproduction, growth, survival, abundance, and distribution of key biotic com- ponents of the marine ecosystem. The research will be conducted in the vicinity of Elephant Is- land, South Shetland Islands. It will examine both intra- and inter-annual natural variability on a long-term basis to assess the potential impact of human activities. A 10-year time series of meas- urements is crucial to understanding the nature of this variability."
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            "content": "Specific research tasks will include systematic ship surveys and monitoring at coupled offshore and land-based sites, development of reliable sur- vey methods for interpreting the results of monitoring activities, investigation of methods to better determine krill abundance and distribution, determining spatial and temporal scales of krill aggregations, and analyzing remote sensing data obtained via satellite to investigate broad patterns in environmental conditions within the study area during both the austral summer sampling period and winter season in conjunction with satellite monitoring of crabeater seals."
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            "content": "Based upon this plan, a preliminary cruise an- nouncement and a solicitation of proposals were distributed in July 1989. The deadline for receiv- ing the proposals was September 15, 1989. A finalized research plan will then be completed. (R. Holt, FTS 893-7601)"
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            "content": "Meeting Held of the Working Group for the CCAMLR Ecosystem Monitoring Program"
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            "content": "The fourth meeting of the Working Group for the CCAMLR Ecosystem Monitoring Program"
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            "content": "(CEMP) was held August 23-30 in Mar Del Plata, Argentina. The U.S. delegation consisted of Drs. Rennie Holt, John Bengtson of the National Marine Mammal Laboratory, and Polly Penhale of the National Science Foundation. Other national delegations were from Argentina, Australia, Brazil, Chile, India, and the United Kingdom."
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            "content": "Major agenda items considered included 1) evaluation of agreed predator monitoring parameters, 2) progress and achievements of directed research on predators, 3) prey monitor- ing, and 4) specification of environmental data. The group considered 24 working papers address- ing these items."
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            "content": "The Group conducted an extensive review of research, being or proposed to be, conducted at CEMP selected monitoring sites. A document was reviewed which provided comments from the Scientific Committee on Antarctic Research (SCAR) Bird Biology Sub-Committee concerning the research at the CEMP sites. Several modifica- tions, including additions and deletions of directed research on specific species, were made based on the SCAR report."
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            "content": "The standard methods for monitoring parameters of predatory species were reviewed. Based on members' experiences in using the in- structions and results from sensitivity analyses, major revision and reorganization were recom- mended for most standard methods. The draft forms for recording field data and reporting sum- mary data were then reviewed. In many cases, revisions were completed to accommodate chan- ges in the standard methods."
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            "content": "The collection of environmental data required to monitor predator and prey species was inves- tigated. The information required to collect en- vironmental data was divided into two categories, environmental features that have a direct in- fluence on predators and environmental condi- tions that have an indirect effect through their impact on the prey. Features that have a direct influence on predators (e.g., sea ice, local weather) should be the emphasis at land-based monitoring sites. The Group decided that features that have an indirect effect on predators (e.g., water circulation, productivity) should be con- sidered in association with the distribution and"
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            "content": "abundance of prey and should be addressed by the CCAMLR Working Group on Krill. The Group noted that remote sensing using satellites should play an increasing role in the acquisition of key environmental data. In particular, satellite im- agery data on sea-ice distribution and global-scale maps of phytoplankton concentrations and dis- tribution are valuable. (R. Holt, FTS 893-7601)"
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            "content": "COASTAL FISHERIES RESOURCES DIVISION"
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            "content": "La Jolla, California"
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            "content": "COMMERCIAL AND RECREATIONAL FISHERIES RESEARCH FOR MANAGEMENT"
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            "content": "Pacific States Integrated Fisheries Economic Model: PSIFEM"
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            "content": "Drs. Samuel Herrick, Jr. and Dale Squires, In- dustry Economists, and Dr. Jack Doll, Summer Faculty Fellow, report significant progress in the development of the Pacific States Integrated Fisheries Economic Model (PSIFEM). PSIFEM is a positive quadratic programming model that is initially being developed to assess the economic consequences of changing biological and economic conditions within West Coast groundfish, pink shrimp, and joint venture whit- ing fisheries. Essentially, it extends the linear programming model for these fisheries, being developed by Squires, by incorporating ex-vessel supply and demand relationships into the linear program (LP) framework."
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            "content": "PSIFEM is a more general model, in that it relaxes the restrictive assumptions of LP, namely that prices facing fishermen are constant, the costs of catching fish are also constant, and production from a particular fishing activity simply expands until some resource is exhausted. Therefore, the number of non-zero fishing activities will equal the number of binding resource constraints. In the West Coast groundfish fishery it is not unusual for a fishing firm or fleet to engage in a number of distinct fishing operations in which the output is a particular species or mix of species. It is unlike-"
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            "content": "ly that the number of truly fixed constraints would equal the number of observed fishing operations."
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            "content": "Because PSIFEM allows for increasing costs and decreasing prices, the number of observed fishing operations can differ from the number of binding constraints since their perceived marginal benefit and marginal cost calculations can equal- ize at the empirically observed output levels. Fur- thermore, by accounting for shifts in supply and demand of fisheries outputs, PSIFEM is able to predict the welfare or cost-benefit implications when analyzing a variety of policy issues, for example:"
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            ],
            "content": "1. What if an energy crisis occurs that leads to a significant increase in fuel prices or fuel shortages?"
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        {
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            ],
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            ],
            "content": "2. What if trade policies are altered to favor in- creased U.S. imports/exports of fisheries products?"
        },
        {
            "spans": [
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                    "offset": 11155,
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            "content": "3. What if allowable catches are changed for West Coast target species?"
        },
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            "spans": [
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            ],
            "content": "4. What if limited entry, or a system of individual fisherman quotas is introduced into the West Coast groundfish fishery?"
        },
        {
            "spans": [
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                    "offset": 11350,
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            "content": "A PSIFEM analysis of such issues will not only predict the fleet response in terms of adjusted fishing patterns, but also changes in the net economic benefits accruing to both fishermen and consumers. All results are conditional upon the status of the fishery resources over the time period of the data used to estimate the model."
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            "content": "During July-August 1989, some major concep- tual issues regarding the specification of supply and demand relationships for different fish species and gear types were resolved. This per- mitted the researchers to proceed with the development of some preliminary models, for a subset of the fishery, for which Doll has provided calibration algorithms using GAMS (General Al- gebraic Modeling System) language. (S. Herrick, FTS 893-7111; D. Squires, FTS 893-7113)"
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            "content": "Groundfish Stock Assessment"
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            ],
            "content": "Dr. Larry Jacobson, Fishery Biologist, par- ticipated in the Pacific Fisheries Management"
        },
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            "content": "Council (PFMC) Groundfish Management Team's ad hoc review of stock assessments. The review was held at the Tiburon Laboratory, August 7-9. At the meeting Jacobson discussed, with state and NMFS colleagues, a proposed ap- proach for assessment of shortspine thornyhead stocks. He also obtained logbook data for bottom trawl catches landed in California during 1978- 1986, and length composition data for shortspine thornyhead landed in California during 1978- 1988. His goal is to develop an assessment of the shortspine thornyhead stock for use by the Groundfish Management Team and the PFMC during the 1990 management cycle. (L. Jacobson, FTS 893-7117)"
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            "content": "Anchovy Management"
        },
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            "spans": [
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                    "offset": 12933,
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            "content": "At the PFMC meeting held in San Diego on July 13, Industry Economist Cynthia Thomson, Fishery Biologist Larry Jacobson, and Chairper- son Rick Klingbeil (CDF&G) were appointed to the Anchovy Fisheries Management Plan (FMP) Team. The team has been charged with drafting two amendments to the existing FMP. The first amendment would allow a small reduction fishery under certain circumstances when the estimated spawning biomass is below the current cut-off level for reduction fishing. The second amend- ment stems from a requirement in the recently revised NOAA guidelines for fishery manage- ment plans that requires each FMP to include an explicit definition of overfishing. The team met for the first time August 25 at the SWFC, developed a timetable for its work, discussed preliminary options, and assigned the tasks of preparing an analysis of each option to specific individuals. It is hoped that the final version of the revised FMP will be adopted by the PFMC in March."
        },
        {
            "spans": [
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            ],
            "content": "Larry Jacobson, Mathematician Nancy Lo, and other Coastal Fisheries Resources Division (CFRD) colleagues have outlined approaches to: 1) evaluating the information requirements and precision of the Stock Synthesis Model currently used to estimate annual spawning biomass for the PFMC, and 2) calculating confidence intervals for spawning biomass estimates. They plan to com- plete their analyses in time for use by the NMFS"
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            "content": "3"
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        {
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            ],
            "content": "and PFMC during 1990. (L. Jacobson, FTS 893- 7117; C. Thomson, FTS 893- 7116)."
        },
        {
            "spans": [
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            "content": "Extent of \" Avidity Bias\" in Angler Surveys Revealed"
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            "content": "Cynthia Thomson has completed a paper en- titled \"The Effect of the avidity bias in on-site angler surveys on estimates of fishing effort and economic value.\" While on-site surveys are often more cost-effective than other sample selection techniques, they typically generate samples that are biased toward more frequent anglers. This paper compares the \"avidity bias\" associated with two surveys: 1) the Marine Recreational Fishery Statistics Survey (MRFSS), an on-site creel sur- vey of recreational anglers, and 2) the Bay Area Sportfish Economic Survey (BASES), an economic survey conducted as a mail follow-up to a random telephone canvass."
        },
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            "content": "The results indicate that the avidity bias is much larger for the MRFSS Intercept respondents than the BASES respondents. This bias carried over into estimates of annual fishing expenditures and consumer surplus, resulting in estimates of annual economic value per angler that are 1.5 to 4.0 times larger for the Intercept than the BASES respondents. Given that the BASES sample is itself biased toward more avid anglers, these figures are probably conservative estimates of the \"true\" magnitude of the bias in the MRFSS Inter- cept relative to the angling population as a whole."
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            "content": "The paper offers the following general con- clusions:"
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            "spans": [
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            "content": "1. Estimates of economic value can be significantly affected by the extent of avidity bias in the sample."
        },
        {
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            "content": "2. Angler expenditures are not necessarily propor- tional to the number of trips taken. The relationship between expenditures and avidity may be more complicated, either offsetting or exacerbating the effect of the avidity bias in the sample."
        },
        {
            "spans": [
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            ],
            "content": "3. The sensitivity of consumer surplus estimates to the avidity bias is affected by the functional form of the travel cost model used to generate these es- timates."
        },
        {
            "spans": [
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                    "offset": 16263,
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            ],
            "content": "The paper will be presented at the International Symposium and Workshop on Creel and Angler Surveys in Fisheries Management in Houston, Texas in March 1990. (C. Thomson, FTS 893- 7116)"
        },
        {
            "spans": [
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                    "offset": 16448,
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            "content": "SURVEY SYSTEMS DEVELOPMENT AND EVALUATION"
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        {
            "spans": [
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                    "length": 60
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            ],
            "content": "Cruise Planned to Evaluate Use of ROV For Biomass Estimation"
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            ],
            "content": "The Coastal Fisheries Resources Division is planning a jointly-funded cruise with two vessels to develop new survey techniques for estimating the biomass of demersal fisheries resources. The cruise is funded jointly by the Southwest Fisheries Center and National Undersea Research Program (NURP). The cruise will involve two ships, the F/V Gus D chartered by the SWFC and the R/V William A. McGaw chartered by Sachse Engineering As- sociates. Sachse Engineering was awarded the con- tract by NURP to operate a towed vehicle with side-scan sonar, video cameras and a 70 mm survey camera. The vehicle will be towed over depths of 100 to 700 fathoms and cameras and sonar will be used to provide a census of bottom fishes. To com- pare abundance estimates provided by the ROV to those provided by conventional trawling, the F/V Gus D, a commercial trawler, will trawl over the same grounds surveyed by the ROV. The ROV will also be towed over untrawlable grounds to deter- mine how the density of groundfish differs between trawlable and untrawlable areas."
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            "content": "Cruise dates have been set for September 28 on the McGaw and September 29 on the Gus D. SWFC personnel participating in the cruise will be Cruise Leader John Butler, Richard Charter, and Cindy Meyer (SWFC), and Pete Adams (Tiburon Laboratory) on board the McGaw. Cruise Leader Eric Lynn, Ron Dotson, Sue Miller and Wayne Samiere (Tiburon Laboratory) will be onboard the Gus D. The two vessels will rendezvous off Morro Bay on September 29 to begin work."
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            ],
            "content": "A one day shake-down cruise on the R/V Blue Horizon with the SWFC and Sachse Engineering has been scheduled for September 22. This cruise will determine sampling procedures and operational height of the ROV and calibrate the strobes for the survey camera. (J. Butler, FTS 893-7149)."
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            "content": "4"
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            "content": "₹"
        },
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                    "length": 43
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            "content": "FISHERY-MARINE MAMMAL INTERACTIONS DIVISION"
        },
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                    "offset": 18390,
                    "length": 20
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            "content": "La Jolla, California"
        },
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            "content": "BIOLOGY ASSESSMENT PROGRAM"
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            ],
            "content": "Studies Are Under Way on Effects of Seal Bombs"
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                    "offset": 18485,
                    "length": 1066
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            ],
            "content": "Under the 1988 amendments to the Marine Mammal Protection Act (MMPA), the Secretary of Commerce is required to conduct a study to determine that the use of seal bombs (class C explosives) does not cause injury to, or increase the mortality of, dolphins when the bombs are used to control the dolphins during yellowfin tuna purse-seining operations. In response to the MMPA requirement, Wildlife Biologist Al Myrick has been exploring different avenues of inquiry into the effects of seal bombs on dolphins. One of these involves conducting open-water tests of seal bombs on inanimate objects and dolphin carcasses to determine whether mechani- cal damage can be done to the targets by under- water seal-bomb explosions. Another study involves the monitoring of set log data for years 1986-1989 to determine percent use of seal bombs on dolphins, and to estimate annual numbers of dolphins potentially exposed to bombs. A third study, now in its early stages, will involve ex- amining inner ear tissue of purse-seined dolphin carcasses for evidence of hearing damage."
        },
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            "spans": [
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                    "length": 661
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            ],
            "content": "Since July, tests have been conducted at sea using both the legal, Class-C seal bombs and il- legal foreign-made bombs (over 40 grains of ex- plosive). Using an electric detonator, the bombs were exploded remotely on target objects. Gelatin-filled bottles containing air-filled balloons and water- and air-filled metal cylinders were used as targets to simulate organ systems, and dol- phin carcasses were used to simulate whole live animals. With considerable assistance from Chuck Oliver and the SWFC dive team, targets were deployed at various depths and distances from the detonation site and fired on. After the tests, the targets were examined for damage."
        },
        {
            "spans": [
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                    "offset": 20214,
                    "length": 297
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            ],
            "content": "Observers have been trained in the collection of ear bones (cochlea) and a call has been made to observers at sea to begin cochlea sampling. Samples received by he SWFC will be forwarded to a noted specialist for examination and evaluation. A report of the study should be available in Novem- ber."
        },
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            "spans": [
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            "content": "Results of these and other studies in the SWFC's seal-bomb investigations will be reviewed and finalized at a Seal Bomb Workshop to be held at the SWFC in mid-November. The workshop will be attended by a small group of experts representing industry, the environmental community, and specialized fields covered in this study. (A. Myrick, FTS 893-7092)."
        },
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            "content": "FISHERY DEPENDENT ASSESSMENT PROGRAM"
        },
        {
            "spans": [
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            "content": "Report on Blue Whale Distribution in The Eastern Tropical Pacific"
        },
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            "spans": [
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                    "offset": 20967,
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            "content": "Dr. Steve Reilly, Fishery Biologist, and Victoria Thayer, Oceanographer, have just completed a manuscript describing the distribution of blue whales in the eastern tropical Pacific Ocean (ETP). The classical, and general, depiction of blue whale distribution includes a seasonal migration to high latitudes where they feed extensively on euphausiids, then to low latitudes where, it is thought, they rarely feed but rather mate and give birth. Foraging has not been considered a major factor in their low latitude distribution. From the patterns of blue whale distribution in the ETP, Reilly and Thayer hypothesize that forage availability may be an important determinant of blue whale habitat in low latitudes."
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            "content": "Figure 1 shows the distribution of blue whales in the ETP studied from 211 sightings of 355 whales recorded during research vessel sighting surveys and by biologists aboard fishing vessels. All sightings occurred in relatively cool, produc- tive upwelling-modified waters along Baja California, the equator near the Galapagos Islands, the northern coast of South America, and around the Costa Rican Dome (a large, stationary eddy centered at 9°N, 89°W). Occupation of the most productive parts of the ETP, all with relatively large standing stocks of euphausiids, indicates that blue whales may select low latitude \"breeding\" areas which also permit foraging."
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            "content": "10."
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            "content": "Figure 1. Spatial distribution of 211 blue whale sightings in the eastern tropical Pacific, 1974-1988. The boundary line encloses the area in which there was at least 185 km search effort per one degree latitude-longitude square."
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            "content": "Baja California was occupied seasonally, with a sighting peak coinciding with the spring peak in upwelling and biological production. The Costa Rican Dome and nearby areas on the eastern-most and shallowest end of the prominent ridge in the thermocline undergo very little seasonal variation in both physical and biological processes. This discrete area was occupied year round, suggesting either a resident population or that both northern and southern hemisphere whales visit, with tem- poral overlap and potential for interbreeding. The modal group size was one for all areas and seasons, but the frequency of groups with two or more whales was significantly higher in sightings made near the Galapagos Islands and coast of South America. (S. Reilly, FTS 893-7164)."
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            "content": "HONOLULU LABORATORY"
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            "content": "Honolulu, Hawaii"
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            "content": "U.S .- Japan Cooperative Seminar on Sebastes"
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            "content": "Scientists from the United States, Japan, and Canada met in Honolulu, June 26-30, 1989, for a cooperative seminar, Rockfishes of the Genus"
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            "content": "Sebastes: Their Reproduction and Early Life His- tory. A major goal of the seminar was to provide U.S. and Japanese scientists the opportunity to share their knowledge and examine alternative ap- proaches to the study of Sebastes. The seminar, which was held at the East-West Center on the University of Hawaii-Manoa campus, was jointly funded by the International Programs Division of the National Science Foundation (NSF) and the Japan Society for the Promotion of Science. The organizers of the seminar were George W. Boeh- lert, Director of the Honolulu Laboratory, and Juro Yamada from the University of Hokkaido, Hakodate, Japan."
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            "content": "In both the United States and Japan, the primary impetus for research on Sebastes has been its impor- tance to marine fisheries, but the secondary im- petuses have differed: Japan has focused on aquaculture potential, and the United States on basic ecology pertinent to fisheries. As a result, the two countries use different approaches to the study of reproductive biology and early life history of Sebas- tes. For example, Japan has developed an energetic aquaculture industry to replenish the coastal marine resources, while the United States concentrated on natural production and management of stocks."
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            "content": "N. America"
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            "content": "Systematics"
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            "content": "Food"
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            "content": "Figure 1A. Differences in research effort on rock- fishes in North America and Japan as shown by publications. Data for North America are based upon 456 references from a published bibliography by Maureen Leet of the Tiburon Lab. in 1988. Those from Japan are based upon 129 references from a bibliography by Koji Ikehara of the Japan Sea Regional Fisheries Research Lab. in Niigata. Each paper was selected on the basis of whether the genus Sebastes or Sebastodes or the word rockfish appeared in its title and was categorized according to the content implied by its title."
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            "content": "pre-1950s"
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            "content": "1970s"
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            "content": "1980s"
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            "content": "Figure 1B. Changes in the direction of research on rockfishes in North America over time."
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            "content": "An examination of pertinent publications demonstrates the differences between research ap- proaches in Japan and North America (United States and Canada). Research papers on Sebastes in North America focus largely on biology, systematics, fisheries, and ecology and, to a lesser extent, reproduction, physiology, and food science (Figure 1A). On the other hand, Japanese publications are mostly on reproduction, physiology, biology, and systematics and, to a lesser extent, aquaculture, ecol- ogy, and fisheries. Early research in North America was dominated by papers on systematics and basic"
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            "content": "biology, but recent decades have seen an increase in studies on fisheries and ecology (Figure 1B)."
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            "content": "The 24 scientists attending the meeting presented papers on the reproduction, physiology, life history, and aquaculture of rockfish. Many of the papers resulted from a 4-year, NSF- sponsored, cooperative research program between U.S. and Japanese scientists. NOAA Fisheries was well rep- resented, with coauthorship on 12 of the 25 papers presented."
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            "content": "The North American participants made several ties for future cooperative research and learned a great deal from their Japanese colleagues about new research on reproduction in Sebastes, includ- ing a paper and a video presentation on mating behavior and copulation. Applications of reproductive and ecological research were con- sidered in several papers on aquaculture. Some papers examined the feasibility of raising commer- cially-important rockfish in hatcheries for later release in the wild. Pilot studies in Japan -- where raising young rockfish is much more advanced than in the United States -- have involved raising rockfish to a viable size and then releasing them in the open ocean. Later, these rockfish may be cap-"
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            "content": "Participants of U.S .- Japan Cooperative Seminar. Front row (left to right): Hiroya Takahashi, Hokkaido Univ .; Bruce Leaman, Pacific Biol. Station, British Columbia; Milton Love, Univ. of California, Santa Barbara; Ralph Larson, San Francisco State Univ .; Akihiko Shinomiya, Univ. of Kagoshima; Kazunori Takano, Hokkaido Univ .; Motohiro Shimizu, Hokkaido Univ. Second row: Teruyuki Nakanishi, Japan Nat. Res. Inst. of Aquaculture; Muneharu Kusakari, Hokkaido Central Fish. Exp. Station; Maxwell Eldridge, Tiburon Lab .; John Wourms, Clemson Univ .; Leslie Williams, Honolulu Lab .; Akihiro Takemura, Hokkaido Univ .; Tina Wyllie Echeverria, Univ. of Alaska-Fairbanks; Juro Yamada, Hokkaido Univ .; Jeannette Whipple, Tiburon Lab .; Yoshitaka Nagahama, Japan Nat. Inst. Basic Biol .; Lisa Seeb, S. Illinois Univ. Third row: Lewis Haldorson, Univ. of Alaska-Southeast; Arthur Kendall, Jr., Alaska Fish. Sci. Center; Jeffrey Polovina, Honolulu Lab .; George Boehlert, Honolulu Lab .; Mary"
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            "content": "7"
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            "content": "tured as adults by commercial fishermen. Such hatchery releases may help prevent natural popula- tions of rockfish from becoming depleted, but have not been proven to be effective as yet."
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            "content": "The papers presented at the meeting are being reviewed for publication as a dedicated volume of Environmental Biology of Fishes and in book form as a companion volume in the series Developments in the Environmental Biology of Fishes, which will be edited by Boehlert and Yamada. (G. Boehlert (808) 943-1211)"
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            "content": "INSULAR RESOURCES INVESTIGATION"
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            "content": "NOAA-UH Tropical Stock Assessment Workshop Held in Honolulu"
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            "content": "The Tropical Assessment Workshop was held in Honolulu, July 5-26, 1989, to assist fishery scien- tists from selected Pacific island countries (Figure 3) in analyzing their research and commercial"
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            "content": "Figure 3. Participants of the Tropical Assessment Workshop. Front row (left to right): Paul Lokani, Donald Kobayashi, Helen Pili, Gideon Tiroba, Ned Howard, M. Kimberly Smith, Apisai Sesewa, and Richard Shomura. Second row: Albert Carlot, Gianandar Nath, Ronald Benco, Taniela Sua, Tevita Latu, Esperance Cillaurren, Jeffrey Polovina, Paul Dalzell, and Sosaia Tulua."
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            "content": "catch and effort data on deepwater snappers. The workshop was convened by NOAA Fisheries and the University of Hawaii's School of Ocean and Earth Science and Technology, with funding provided by NOAA and the U.S. Agency for Inter- national Development. Workshop participants were from the Cook Islands, Fiji, Kingdom of Tonga, Papua New Guinea, Solomon Islands, Tuvalu, Vanuatu, and Western Samoa. The ul-"
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            "content": "timate objective of the analyses was to estimate the maximum sustainable yield (MSY) and the fishing effort that achieves this yield for the snapper resources in each country. The analytical methods used during the workshop were developed and adapted for use with deepwater snappers by Honolulu Laboratory staff during the past 10 years."
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            "content": "Kadavu"
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            "content": "18.00"
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            "content": "1.50"
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            "content": "903"
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            "content": "35.00"
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            "content": "2.40"
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            "content": "Median = 2.70"
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            "content": "Island"
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            "content": "Grid 482"
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            "content": "40.00"
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            "content": "Ambae"
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            "content": "8"
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            "content": "MSY/BO M=0.25"
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            "content": "Beverton-Holt when m/k=2"
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            "content": "Pauly (2.3 w) -0.26"
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            "content": "Marianas"
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            "content": "Tonga"
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            "content": "Vanuatu"
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            "content": "113-190"
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                }
            ],
            "content": "aNo estimate of q was available to estimate F."
        },
        {
            "spans": [
                {
                    "offset": 33393,
                    "length": 484
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            ],
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            ],
            "content": "In western Samoa, the deepwater snappers are already close to MSY although some increase is possible, and in Fiji, the fishery is using only about 20% of the estimated 3,000 nmi of 200 m isobath and thus has the potential to increase catches if this unfished habitat has populations of deepwater snappers. However, if the fishery remains only within the habitat currently fished, catches will decline, perhaps by 50%. In Fiji, the current level of fishing effort may be a little lower"
        },
        {
            "spans": [
                {
                    "offset": 33878,
                    "length": 345
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            ],
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                }
            ],
            "content": "than the level that produces MSY. Papua New Guinea has no appreciable landings of deepwater snappers, but a potential exists with MSY in the range of 170-270 t/year. Vanuatu's landings repre- sent only one-third to one-fifth of the potential MSY, as indicated by the current landings and level of F, so the potential exists for greater landings."
        },
        {
            "spans": [
                {
                    "offset": 34224,
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            ],
            "content": "The Honolulu Laboratory staff that provided assistance to this workshop included: Jeffrey J. Polovina, Program Manager of the Insular Resources Investigation; David A. Somerton, Leader of the Insular Stock Assessment Program; NRC-NOAA Postdoctoral Fellow M. Kimberly Smith; Computer Programmers Ronald A. Benco and Donald Kobayashi; and Biological Tech- nician Happy A. Williams. The results of these analyses were presented in reports written by the participants and will be published in the NOAA Technical Memorandum Series. (J. Polovina (808) 943-1218)"
        },
        {
            "spans": [
                {
                    "offset": 34780,
                    "length": 31
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            ],
            "content": "PELAGIC RESOURCES INVESTIGATION"
        },
        {
            "spans": [
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                    "offset": 34812,
                    "length": 40
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            ],
            "boundingRegions": [
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            ],
            "content": "Pacific Blue Marlin Tracked Successfully"
        },
        {
            "spans": [
                {
                    "offset": 34853,
                    "length": 500
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            ],
            "boundingRegions": [
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            ],
            "content": "Two Pacific blue marlin, Makaira mazara, car- rying depth-sensitive, ultrasonic transmitters were tracked successfully by Fishery Biologist Richard W. Brill of the Honolulu Laboratory, Kim Holland of the University of Hawaii's Institute of Marine Biology, and NOAA Corps Officer LTJG Scott Sullivan off the Kona Coast, island of Hawaii, July 28 to August 6, 1989. The fish were caught and released by anglers participating in the 31st Annual Hawaiian International Billfish Tournament in Kailua-Kona."
        },
        {
            "spans": [
                {
                    "offset": 35354,
                    "length": 690
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            ],
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            ],
            "content": "Both fish behaved remarkably similar to three marlin tracked in the summer of 1988, although they were captured and released about 10 nmi south of last year's capture site. After release, the two fish moved directly offshore and along parallel courses for approximately 10 nmi. This offshore movement appears to be a stereotypical response of marlin to the stress of capture. Both fish eventually turned north and proceeded in that direction for the duration of the tracking. With respect to swimming depth, both fish moved up and down only within the mixed layer (i.e., the 50-100 m layer of uniform water temperature). Further analysis of the data is proceeding. (R. Brill (808) 943-1234)"
        },
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            "content": "9"
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            "content": "Brill Attends Two International Conferences"
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            "content": "Fishery Biologist Richard W. Brill attended the Kjell Johansen Commemorative Symposium, Strategies of Physiological Adaptation, at the August Krogh Institute in Copenhagen, Denmark, July 6-8, 1989, and the XXXI Congress of Physiological Sciences in Helsinki, Finland, July 9-14, 1989. At the symposium in Denmark, Brill presented a poster, \"Temperature effects on the acid/base balance of isolated whole blood and plas- ma of yellowfin tuna (Thunnus albacares),\" which was coauthored with David Jones and Peter Bush- nell, who are with the University of British Colum- bia."
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            ],
            "content": "The poster described a re-investigation of the unusual rates of pH change with temperature pre- viously reported in isolated tuna blood. Tunas often subject themselves to rapid temperature changes during vertical movements, which are a regular part of their behavior. Also, because they have countercurrent, vascular heat exchangers, their muscle temperatures may be as much as 10°- 15℃ above ambient. Tuna blood is therefore regularly subjected to rapid temperature changes in open (i.e., in the gills) and closed systems (i.e., in the vascular heat exchangers). Understanding how tunas regulate their blood acid-base balance is therefore critical to understanding their habitat requirements and temperature tolerances."
        },
        {
            "spans": [
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            "content": "The effects of temperature on the acid-base balance of the blood of skipjack tuna, Katsuwonus pelamis, were first investigated in vitro by S. F. Perry and others, who found similar rates of pH change with temperature in open (i.e., constant pCO2) and closed systems (-0.0131 and -0.0165 pH units/C, respectively) (cf. Comp. Biochem. Physiol. 81A:49- 53, 1985). These data contrast sharply with those for marine seatrout, Cynoscion arenarius, which have more typical rates of pH change with temperature (-0.0048 and -0.0150 pH units/°C in open and closed systems, respectively) according to a study by J. N. Cameron (Respir. Physiol. 33:129-144, 1978). Perry and others pos- tulated that the unusual rates of pH change with temperature in tuna blood were an adaptation re- lated to the unusual anatomy, physiology, and life- style of these pelagic teleosts. Blood from albacore, Thunnus alalunga, also exhibits a high rate of pH change with temperature (0.016 pH units/°C) in the open system, according to a study by J. J. Cech and others (J. Exp. Biol. 109:21-34, 1985)."
        },
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            "content": "The study described in the poster used blood from small (ca. 1-3 kg) yellowfin tuna, equi- librated at temperatures inhabited by this species and at CO2 levels corresponding to normal arterial and venous blood values. Results showed that the yellowfin tuna blood had an unusually high HCO3 and non-bicarbonate buffering capacity when compared with other teleosts. Tuna blood and plasma had the same rates of pH/℃ and pCO2/℃ in a closed system as other teleosts; this result was expected since these changes were most likely due to reciprocal titration of plasma proteins and HCO3. Tuna red blood cells appeared to be in- volved in the unusually high pH/℃ and [HCO3]/℃ changes occurring in the open system. The pH/℃ changes in the open system were pCO2 dependent and independent of [HCO3]/℃ changes, most like- ly reflecting the movement of strong ions into or out of red blood cells. The study is part of a larger effort aimed at understanding the in vivo regula- tion of acid-base status in tunas."
        },
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            "spans": [
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                    "offset": 39456,
                    "length": 941
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            "content": "At the symposium in Finland, Brill presented an invited lecture, \"Comparative physiology of animal athletes: Tunas and other fast fishes.\" His lecture centered on the new concept that the unique anatomy, physiology, and biochemistry of tunas have evolved not to permit exceptionally high sus- tained swimming speeds, but rather to permit rapid repayment (i.e., rapid lactate metabolism) of the exceptionally large oxygen debts (i.e., high muscle lactate levels) that tunas are capable of accumulat- ing. Previously, tunas were assumed to be like human athletes: good marathoners. Brill pointed out that these terms are inappropriate despite the title of the lecture, because the unique environment in which tunas live does not lend itself to descrip- tion by analogy to situations in the terrestrial en- vironment. Brill's lecture was part of a symposium on the physiology and biochemistry of elite animal athletes. (R. Brill (808) 943-1234)"
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            "content": "MARINE MAMMALS AND ENDANGERED SPECIES PROGRAM"
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            ],
            "content": "Head Start Project Releases Female Monk Seal Pups"
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            ],
            "content": "According to Fishery Biologist John Hender- son, the Head Start Project at Kure Atoll completed another successful year on August 7, 1989, with the release of four female Hawaiian monk seal, Monachus schauinslandi, pups. The pups had"
        },
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            "content": "10"
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            "content": "been maintained in a protective enclosure on Green Island at the atoll since weaning earlier this year."
        },
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            "content": "Initiated in 1981, the Head Start Project is designed to increase the survival of weaned female pups at Kure Atoll, where first- year survival of pups was very low during the 1960's and 1970's. By maintaining female pups in a wire mesh enclosure, the Project protects them from two of the sources of first-year mortality: adult male seals and tiger sharks, Galeocerdo cuvieri, both of"
        },
        {
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            ],
            "content": "which are known to attack weaned pups. During the field season at Kure Atoll, staff and volunteers of the Marine Mammals and Endangered Species Program maintain the protective enclosure, trap locally occurring reef fish to feed the female pups during their time in captivity, and also monitor the monk seal population."
        },
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            "spans": [
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            ],
            "content": "The Head Start Project also \"rehabilitates\" abandoned or otherwise prematurely weaned, female monk seal pups from French Frigate Shoals, where the monk seal population may be near carrying capacity. Female pups collected from the shoals are flown to Honolulu for rehabilitation and subsequently released at Kure Atoll, after being held in the protective enclosure to ensure they are able to feed on their own. This year, three rehabilitated female seals, originally captured in 1988, were added to the Kure popula- tion. They were transported to Kure Atoll in April and maintained in the protective enclosure until being released in late May. Two of the females were sighted at Kure Atoll throughout the summer, but the third was not sighted, having either emigrated or died."
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            "content": "Ten pups were born at Kure Atoll in 1989; nine survived to weaning. This is the highest number of births documented at the atoll since 1981 and is a marked increase since the low of one birth in 1986. Furthermore, female seals that were \"graduates\" of the Head Start Project in its early years are now giving birth. With a relatively large cohort of young females approaching reproductive age, the number of births at Kure Atoll is expected to con- tinue to increase. (J. Henderson (808) 943-1225)"
        },
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            "content": "Research Successfully Completed on Laysan Island and Pearl and Hermes Reef"
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            "spans": [
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            ],
            "content": "The annual field research directed at monitoring the Hawaiian monk seal, Monachus schauinslandi, and green turtle, Chelonia mydas, on Laysan Island"
        },
        {
            "spans": [
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            ],
            "content": "and Pearl and Hermes Reef was completed on August 2, 1989, by Wildlife Biologist Brenda L. Becker, with the assistance of several volunteers. Preliminary results from the 3.5-month field camp at Laysan Island indicated that a minimum of 32 pups were born in 1989, which is about average for this island. The minimum survival rate (60%) of the yearling monk seals was lower than normal (80- 90%), but births (N=45) in 1988 were the highest on record since 1977, when intensive research efforts began at Laysan Island."
        },
        {
            "spans": [
                {
                    "offset": 43553,
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                }
            ],
            "content": "Thirteen mortalities of seals were documented at Laysan Island; half (seven) were adult females. Injuries due to mobbings by adult males were present on eight of the carcasses (i.e. , all seven of the adult females and one subadult male). Only one mobbing incident, which was not fatal, was observed; it involved a 5-year-old adult female and at least five adult males. One of the mortalities was of an immature seal whose skull and attached foreflipper were found in the stomach of a dead tiger shark, Galeocerdo cuvieri, that washed ashore. This is the first documented case of a monk seal skull being discovered inside a shark. Three seals were found entangled in marine debris; one incident required physical restraint to remove a small tire from an adult female."
        },
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            "spans": [
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                    "offset": 44321,
                    "length": 663
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            ],
            "content": "Turtle nesting activity on Laysan Island was quite low -- only nine nests. Three adult turtles with fibropapillomas (tumors) were sighted during the field season, compared with one sight- ing of a diseased turtle in 1988. Last year's sight- ing was the first on record at Laysan Island, although the number of turtles exhibiting fibropapillomas has been increasing around the main Hawaiian Islands. One of the diseased turtles sighted in 1989 had tumors on its eyes, and during the field season, its left front flipper was partially amputated, presumably by a tiger shark. Loss of vision due to the tumors probably made the turtle more vulnerable to shark attack."
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                }
            ],
            "content": "After the Laysan Island field season, re- searchers spent 2 weeks at Pearl and Hermes Reef conducting census counts as well as individual identification of monk seals via tags and identify- ing marks (i.e., scars). Fourteen pups were tagged, no mortalities were documented, and one entanglement was observed. Turtle nesting ac- tivity was again minimal. (B. Becker (808) 943- 1265)"
        },
        {
            "spans": [
                {
                    "offset": 45367,
                    "length": 2
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 13,
                    "polygon": [
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                }
            ],
            "content": "11"
        },
        {
            "spans": [
                {
                    "offset": 45370,
                    "length": 51
                }
            ],
            "boundingRegions": [
                {
                    "pageNumber": 14,
                    "polygon": [
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                        1.2029,
                        1.5053,
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                    ]
                }
            ],
            "content": "Tumors Continue to Spread in Hawaiian Green Turtles"
        },
        {
            "spans": [
                {
                    "offset": 45422,
                    "length": 858
                }
            ],
            "boundingRegions": [
                {
                    "pageNumber": 14,
                    "polygon": [
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                    ]
                }
            ],
            "content": "The incidence of fibropapillomas, a life- threatening tumor, has substantially increased in an important aggregation of the Hawaiian green turtle, Chelonia mydas, which resides along the southern coast of the island of Molokai and, prior to 1985, had no known cases of the tumors. Ac- cording to George H. Balazs, Leader of the Marine Turtle Research Task, tag and recapture work per- formed in July 1989 indicates that 14 of 143 turtles (9.8%) captured off Molokai had tumors, com- pared with 6 of 125 turtles (4.8%) during the same period in 1988. The etiology of this disease, its mode of transmission, and its impact to the biologi- cal recovery of the green turtle population in Hawaii are presently unknown. Scientists also have yet to pinpoint why the disease has spread simultaneously at certain sites in Hawaii and Florida during the past few years."
        },
        {
            "spans": [
                {
                    "offset": 46281,
                    "length": 584
                }
            ],
            "boundingRegions": [
                {
                    "pageNumber": 14,
                    "polygon": [
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                        4.4766,
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                        6.4601,
                        1.543,
                        6.4697
                    ]
                }
            ],
            "content": "The periodic monitoring and tagging of imma- ture and adult green turtles at Palau has been under way since May 1982, in cooperation with Bill Puleloa, an Aquatic Biologist with the State of Hawaii, and Ed Medeiros, a local fisherman who is well versed in the capture of sea turtles. During 1982-85, approximately 300 turtles were captured, examined, tagged, and released without any cases of tumors being seen. However, one of the turtles captured in October 1985 was heavily afflicted with these debilitating epithelial growths; the second diseased turtle was captured in June 1987."
        },
        {
            "spans": [
                {
                    "offset": 46866,
                    "length": 402
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 14,
                    "polygon": [
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                    ]
                }
            ],
            "content": "Increased effort will be directed at monitoring the incidence of tumors at other coastal habitats preferred by turtles in the Hawaiian Islands. In addition, cooperative studies were initiated in Hawaii with researchers at the Universities of Florida and Chicago in concordance with the priority position assigned to this problem in the Recovery Plan for Hawaiian Sea Turtles. (G. Balazs (808) 943-1221)"
        },
        {
            "spans": [
                {
                    "offset": 47269,
                    "length": 35
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            ],
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                }
            ],
            "content": "FISHERY MANAGEMENT RESEARCH PROGRAM"
        },
        {
            "spans": [
                {
                    "offset": 47305,
                    "length": 23
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "Midyear Fishery Reports"
        },
        {
            "spans": [
                {
                    "offset": 47329,
                    "length": 176
                }
            ],
            "boundingRegions": [
                {
                    "pageNumber": 14,
                    "polygon": [
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                    ]
                }
            ],
            "content": "The source of greatest controversy in Hawaii's commercial fisheries in 1989 is the emerging conflict between a group of recently arrived longline fishing boats from the Gulf of"
        },
        {
            "spans": [
                {
                    "offset": 47506,
                    "length": 561
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 14,
                    "polygon": [
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                }
            ],
            "content": "Mexico and small-scale recreational, commer- cial, and charter boats off Oahu's Waianae coast and on Haleiwa's fishing grounds. The topic dominated discussions at the July 24-26, 1989 meeting of the Western Pacific Regional Fishery Management Council in Kahuku, Oahu. By mid- August, the two sides involved in the conflict had attended several meetings held by Council Chair- person William Paty, and informal \"rules of the road\" had been proposed. Neither Federal nor State of Hawaii regulations on the pelagic fisheries have been applicable to this situation."
        },
        {
            "spans": [
                {
                    "offset": 48068,
                    "length": 1161
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "The potential for conflicts over markets, resour- ces, and gear has increased over the past couple of years as the longline tuna fleet expanded -- from as few as 16 vessels in 1980 to 37 vessels in 1987 to at least 65 vessels in 1989. At the same time, the commercial, charter boat, and recreational trollers have expanded in number and are fishing farther from shore. Some of the newer longline vessels fish their gear in shallower depths (some immedi- ately subsurface) and closer to shore, catching a higher percentage of striped marlin, Tetrapturus audax, and yellowfin tuna, Thunnus albacares, than most of Hawaii's longline fleet. This summer, a few of the new longline boats began fishing near fish aggregating devices (FAD's) located 3.5 to 5 miles off the coasts of Oahu and Kauai. This led to a period of intense gear competition, because over the past few years, the FAD's have been used almost exclusively by trollers. Although a number of Honolulu Laboratory scientists have been asked for technical assistance during the controversy, information on the biological and economic inter- actions in these nearshore pelagic fisheries is, at best, weak."
        },
        {
            "spans": [
                {
                    "offset": 49230,
                    "length": 617
                }
            ],
            "boundingRegions": [
                {
                    "pageNumber": 14,
                    "polygon": [
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                    ]
                }
            ],
            "content": "Meanwhile, the longline fishery for pelagic fishes and tunas remained strong through the first half of 1989. Landings by the longline fishery in the first quarter of 1989 were similar to the last quarter of 1988, which itself was a record. Tunas comprised 65% of the landings, most of which were bigeye tuna, Thunnus obesus. The largest component in the non- tuna landings was striped marlin. Substantial land- ings of broadbill swordfish, Xiphias gladius, also were reported this year, the first time that swordfish has been a primary target for Hawaii's boats. Most of the swordfish were exported to the east coast."
        },
        {
            "spans": [
                {
                    "offset": 49848,
                    "length": 96
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 14,
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                }
            ],
            "content": "Detailed estimates of troll and handline land- ings in 1989 are not available, but this does not"
        },
        {
            "spans": [
                {
                    "offset": 49945,
                    "length": 2
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 14,
                    "polygon": [
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                }
            ],
            "content": "12"
        },
        {
            "spans": [
                {
                    "offset": 49948,
                    "length": 101
                }
            ],
            "boundingRegions": [
                {
                    "pageNumber": 15,
                    "polygon": [
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                    ]
                }
            ],
            "content": "appear to be a particularly good year, intensifying the interaction problems with the longline fleet."
        },
        {
            "spans": [
                {
                    "offset": 50050,
                    "length": 300
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 15,
                    "polygon": [
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                }
            ],
            "content": "Logbooks have been collected from a fourth precious coral trip under the experimental permit section of the Precious Coral Fishery Management Plan. Two boats have permits, but only one has fished. Detailed activity data on the fishery cannot be released because of the confidentiality restric- tions."
        },
        {
            "spans": [
                {
                    "offset": 50351,
                    "length": 330
                }
            ],
            "boundingRegions": [
                {
                    "pageNumber": 15,
                    "polygon": [
                        0.7803,
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                        2.766,
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                        3.927,
                        0.7783,
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                    ]
                }
            ],
            "content": "Activity in the bottom fish fishery in the Northwestern Hawaiian Islands (NWHI) was light during the first half of 1989. Only five vessels were active in the fishery in the first half of 1989, making 21 trips. Catch rates on the primary species of red and pink snappers reportedly were not good, although prices have held up well."
        },
        {
            "spans": [
                {
                    "offset": 50682,
                    "length": 399
                }
            ],
            "boundingRegions": [
                {
                    "pageNumber": 15,
                    "polygon": [
                        0.7643,
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                        3.6422,
                        4.0985,
                        3.6369,
                        5.587,
                        0.759,
                        5.5767
                    ]
                }
            ],
            "content": "Only nine trips by seven vessels were made in the NWHI lobster fishery through June 1989. Ves- sel and trip activity were lower than in 1988; however, fishing effort, catch rates for spiny lobster, Panulirus marginatus, and total lobster catches substantially exceeded the 1988 midyear levels. Not only has fishing been good, but prices also have been higher than in 1988. (S. Pooley (808) 943-1216)"
        },
        {
            "spans": [
                {
                    "offset": 51082,
                    "length": 37
                }
            ],
            "boundingRegions": [
                {
                    "pageNumber": 15,
                    "polygon": [
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                        6.2031,
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                        6.5759,
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                    ]
                }
            ],
            "content": "PACIFIC FISHERIES ENVIRONMENTAL GROUP"
        },
        {
            "spans": [
                {
                    "offset": 51120,
                    "length": 20
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 15,
                    "polygon": [
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                    ]
                }
            ],
            "content": "Monterey, California"
        },
        {
            "spans": [
                {
                    "offset": 51141,
                    "length": 30
                }
            ],
            "boundingRegions": [
                {
                    "pageNumber": 15,
                    "polygon": [
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                }
            ],
            "content": "FISHERY/ENVIRONMENTAL LINKAGES"
        },
        {
            "spans": [
                {
                    "offset": 51172,
                    "length": 36
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 15,
                    "polygon": [
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                }
            ],
            "content": "Stock Structure and Size Composition"
        },
        {
            "spans": [
                {
                    "offset": 51209,
                    "length": 514
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 15,
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                }
            ],
            "content": "The stock structure of albacore in the North Pacific is presently an unresolved problem. Fishery Biologist Richard Parrish is currently using the extensive length frequency measure- ments taken in the Japanese baitboat fishery (479,400 fish) and those from the American fishery (318,558 fish) to examine this problem. There is circumstantial evidence which suggests that the traditional U.S. albacore fishery is based on two stocks. A principal piece of evidence is that differences in the growth rates of albacore"
        },
        {
            "spans": [
                {
                    "offset": 51724,
                    "length": 668
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 15,
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                    ]
                }
            ],
            "content": "caught in the northern and southern fishing grounds have been observed (i.e. north and south of 38 degrees North). Growth studies based on a limited number of fish for which daily otolith counts have been made (98 from the northern area and 127 from the southern area) and from tag and recapture data from 521 fish indicate faster growth for fish in the southern area than in the northern area. Tag recoveries suggest that there is more interchange of albacore between the Kuroshio Current region and the northern portion of the California Current region than between the Kuroshio and the southern portion of the Califor- nia Current, and that there may be two stocks."
        },
        {
            "spans": [
                {
                    "offset": 52393,
                    "length": 691
                }
            ],
            "boundingRegions": [
                {
                    "pageNumber": 15,
                    "polygon": [
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                        6.1366,
                        3.9261,
                        6.1263
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                }
            ],
            "content": "The North Pacific albacore fisheries are quite seasonal and occur in different seasons in dif- ferent regions. Also, albacore grow very quickly and the differences in size distributions between regions is heavily influenced by the interaction of these factors. To limit the seasonal bias, the analysis was limited to fish captured in July and August, when the California Current albacore fishery peaks. The data were divided into bands of 5 degrees of latitude for both the Kuroshio and California Current fisheries to show regional pat- terns in length frequencies. In the July-August period the catch from the Japanese baitboat fishery is dominated by fish taken in the Kuroshio Extension."
        },
        {
            "spans": [
                {
                    "offset": 53085,
                    "length": 243
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 15,
                    "polygon": [
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                        6.3354,
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                        7.1917,
                        3.9201,
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                    ]
                }
            ],
            "content": "The clearest feature of the data is that all of the regions have a mode at 61-62 cm, representing 3-year old fish (A in Figures 1 and 2). This mode dominates the size composition in each of the regions; with the significant exception of the 30"
        },
        {
            "spans": [
                {
                    "offset": 53329,
                    "length": 1
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 15,
                    "polygon": [
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                }
            ],
            "content": "A"
        },
        {
            "spans": [
                {
                    "offset": 53331,
                    "length": 14
                }
            ],
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                }
            ],
            "content": "35 N (n=6,109)"
        },
        {
            "spans": [
                {
                    "offset": 53346,
                    "length": 2
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "14"
        },
        {
            "spans": [
                {
                    "offset": 53349,
                    "length": 20
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            "boundingRegions": [
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                }
            ],
            "content": "PERCENTAGE AT LENGTH"
        },
        {
            "spans": [
                {
                    "offset": 53370,
                    "length": 2
                }
            ],
            "boundingRegions": [
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                }
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            "content": "12"
        },
        {
            "spans": [
                {
                    "offset": 53373,
                    "length": 2
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            "boundingRegions": [
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                    "pageNumber": 15,
                    "polygon": [
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                }
            ],
            "content": "10"
        },
        {
            "spans": [
                {
                    "offset": 53376,
                    "length": 15
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            ],
            "boundingRegions": [
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                    "pageNumber": 15,
                    "polygon": [
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                }
            ],
            "content": "30 N (n=14,398)"
        },
        {
            "spans": [
                {
                    "offset": 53392,
                    "length": 1
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "8"
        },
        {
            "spans": [
                {
                    "offset": 53394,
                    "length": 14
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            ],
            "boundingRegions": [
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                    "pageNumber": 15,
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                }
            ],
            "content": "40 N (n=3,925)"
        },
        {
            "spans": [
                {
                    "offset": 53409,
                    "length": 1
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "6"
        },
        {
            "spans": [
                {
                    "offset": 53411,
                    "length": 1
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "B"
        },
        {
            "spans": [
                {
                    "offset": 53413,
                    "length": 1
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            ],
            "boundingRegions": [
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                    "pageNumber": 15,
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                }
            ],
            "content": "c"
        },
        {
            "spans": [
                {
                    "offset": 53415,
                    "length": 1
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            "boundingRegions": [
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                }
            ],
            "content": "4"
        },
        {
            "spans": [
                {
                    "offset": 53417,
                    "length": 1
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            ],
            "boundingRegions": [
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                    "pageNumber": 15,
                    "polygon": [
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                }
            ],
            "content": "2"
        },
        {
            "spans": [
                {
                    "offset": 53419,
                    "length": 2
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            "boundingRegions": [
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                    "pageNumber": 15,
                    "polygon": [
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                }
            ],
            "content": "50"
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            "content": "LENGTH (CM)"
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            "content": "Figure 1. Length frequencies of albacore taken in July-August (1965-82) within 5 degree latitude bands by the Japanese baitboat fishery."
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            "content": "40 N (n=41,867)"
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            "content": "PERCENTAGE AT LENGTH"
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            "content": "45 N (n=96,981)"
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            "content": "35 N (n=32,211)"
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            "content": "B"
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            "content": "10"
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            ],
            "content": "50 N (n=8,509)"
        },
        {
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            "content": "8"
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            "content": "1"
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            "content": "6"
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            "content": "30 N (n=38,132)"
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            "content": "25 N (n=2,790)"
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            "content": "Figure 2. Length frequencies of albacore taken in July-August (1961-84) within 5 degree latitude bands in the California Current Region."
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            "content": "degree bands in the Kuroshio where albacore of this size comprise only a very minor proportion of the size composition and in the most southern 5 degree bands in the California Current where it is the secondary mode. Thus, 3-year old albacore are the same size in July and August in all regions in which they are caught in the North Pacific."
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            "content": "The size of 4-year old albacore is quite a different story. In the California Current region, size com- position has a mode at 73 cm in the 40, 45, and 50 degree north bands (B in Figure 2); whereas the mode is at 76 or 77 cm in the 25, 30, and 35 degree north bands (C in Figure 2). In addition, there is a continuous increase in the proportion of fish larger than 73 cm from the north to the south. In the Japanese baitboat fishery there are modes at either 77 or 78 cm at the 30, 35, and 40 degree north bands (C in Figure 1); however, the bulk of the albacore catch in the 30 degree north bands are larger than the mode for 4-year olds."
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            "content": "The evidence from this analysis suggests that the size composition, and presumably the growth rates, of albacore are more similar in the Western Pacific region and the southern portion of the California Current than they are in the northern and southern portions of the California Current or in the northern portion of the California Current and the Western Pacific. Three-year olds appear to be the same size everywhere, and the size of 4-year olds appears to be primarily a function of latitude. (D. Parrish (408) 646-3311)"
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            "content": "MATHEMATICAL MODELING AND DATA ANALYSIS"
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            "content": "Results Show Long-Term Decline in Albacore Catch Rates"
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            "content": "Operations Research Analyst Roy Men- delssohn has been developing predictive models for the West Coast albacore fishery utilizing catch information from the albacore logbook program. As a part of this program, the annual variations in catch rates are being examined. Recent results show that there has been a long-term decline in the number of fish caught per day in the fishery and that the decline has been particularly dramatic in the region which has traditionally provided the bulk of the catch from the northern Oregon- Washington portion of the fishery. During the 1960s, median catches averaged nearly 100 fish per day in the northern fishery, and catches ex- ceeding 200 fish per day were quite common (Figure 3). In the 1970s, median catch per day"
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            "content": "extreme values"
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            "content": "75 th percentile"
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            "content": "T"
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                    "length": 1
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            "content": "1"
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            "content": "T"
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            "content": "1964 1965"
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            "content": "1966"
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            "content": "1969"
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            ],
            "content": "600+"
        },
        {
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                    "length": 12
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            "content": "Fish per day"
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            "content": "100"
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            "content": "·"
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            "content": "."
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            "content": "-"
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            "content": "H"
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            "content": "1970"
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            "content": "1972"
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            "content": "1974"
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            ],
            "content": "1975 1976 1977"
        },
        {
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            "content": "7978"
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            "content": "1979"
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            "content": "1980 1981 1982 1983"
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            "content": "Figure 3. Albacore catch per day, from logbook data, for the region of maximum catch in the north- ern fishery (i.e. between 40 and 48 degrees north and 50 to 200 km offshore)."
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            "content": "declined markedly and catches above 200 fish per day became rare. Catch rates continued to decline in the early 1980s; median catch ran around 25 fish per day and catches of 100 fish per day be- came rare. (R. Mendelssohn (408) 646-3311)"
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            "content": ")"
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            "content": "95 % median"
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            "content": "1962 1963"
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            "content": "&"
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            ],
            "content": "PELAGIC FISHERIES RESOURCES DIVISION"
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        {
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            "content": "La Jolla, California"
        },
        {
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            ],
            "content": "MULTISPECIES DATA COLLECTION AND EVALUATION PROGRAM"
        },
        {
            "spans": [
                {
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            "content": "Summary of the 1988 North and South Pacific Albacore Data"
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            ],
            "content": "Anthony Majors, Fishery Biologist, and Chris- tina Perrin, Computer Programmer Analyst, SWFC, and Forrest Miller, IATTC, have com- pleted SWFC Administrative Report LJ-89-19, which summarizes 1988 U.S. Pacific albacore fisheries. Catches of albacore in the northern fishery have increased slightly from 2,900 metric tons (t) in 1987 to 4,800 t in 1988, but are still well below the 20-year average of 16,000 t (1968-87). The average sizes of fish landed in the northern fishery (12.8 lbs), was slightly smaller than those landed in 1987 (14.9 lbs). Catch rates in fish per standard day's fishing increased from 70 fish per day in 1987 to 117 fish per day in 1988."
        },
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            ],
            "content": "Participation in the south Pacific U.S. albacore fishery reached its highest level (43 vessels in 1988) since its start in 1986. Catches for the southern fishery increased substantially from 700 t in 1987 to 3,500 t in 1988. Average size of fish caught was 14.9 lbs. (A. Majors, FTS 893-7077; C. Perrin, FTS 893-7078)"
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            "content": "STOCK ASSESSMENT AND FISHERY IMPACT ANALYSIS PROGRAM"
        },
        {
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                    "offset": 58166,
                    "length": 13
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            ],
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            ],
            "content": "Tuna Avifauna"
        },
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                        7.6451,
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                }
            ],
            "content": "Fishery Biologist David Au, has prepared a manuscript comparing the avifaunal charac- teristics of \"log\", \"school\", and \"porpoise\" as- sociated schools of tuna in the eastern tropical Pacific. Some 1,762 catch records, which were obtained by observers during 1974 and 1975 when much information on species associated with tuna catches was collected, were analyzed. Terns and small shearwaters were most abundant with"
        },
        {
            "spans": [
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                    "offset": 58597,
                    "length": 477
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "schoolfish tuna, while boobies, frigatebirds, and the larger shearwaters were more abundant with logs, and especially porpoise-associated tuna. This difference was observed in the occurrence rates of the bird species, and in the flock sizes by species and flock characteristics. It is hypothesized that the avifaunal differences are re- lated to species-specific, aerial foraging tactics used by the birds in pursuit of prey driven to the surface by tuna. (D. Au, FTS 893-7071)"
        },
        {
            "spans": [
                {
                    "offset": 59075,
                    "length": 18
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            ],
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                }
            ],
            "content": "TIBURON LABORATORY"
        },
        {
            "spans": [
                {
                    "offset": 59094,
                    "length": 19
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "Tiburon, California"
        },
        {
            "spans": [
                {
                    "offset": 59114,
                    "length": 37
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            ],
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                }
            ],
            "content": "GROUNDFISH COMMUNITIES INVESTIGATIONS"
        },
        {
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                    "offset": 59152,
                    "length": 102
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "Occurrences of First-Year Juvenile Rockfishes in Nearshore Habitats Indicate Weak Recruitment in 1989."
        },
        {
            "spans": [
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                    "offset": 59255,
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                }
            ],
            "content": "Direct underwater counts of first-year juvenile rockfishes in nearshore habitats along the Men- docino and Sonoma Coasts indicate that the cur- rent year-classes of the three major species, Sebastes flavidus, S. mystinus, and S. melanops, are relatively weak. As in previous years, the comparisons between sites and years are based on counts made between August 15 and September 15, by which time virtually all recruits of these species that will settle in the nearshore habitats have done so. This year's counts, which were made by Fishery Biologists Dan Howard and Tony Chess of the Groundfish Communities In- vestigations, indicate levels of recruitment similar to 1984, another weak year (Tables 1 and 2). In fact, of the three, there were fewer S. flavidus and S. melanops counted this year than any other year since the El Niño year of 1983."
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                }
            ],
            "content": "Despite the relatively low numbers, however, certain patterns noted during previous years remained evident (although less so than during years of greater abundance). Thus, the first-year juvenile S. flavidus continued to be more numerous off Mendocino than off Sonoma, while the reverse was true of S. mystinus."
        },
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            "spans": [
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                    "offset": 60415,
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                }
            ],
            "content": "15"
        },
        {
            "spans": [
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                    "length": 225
                }
            ],
            "boundingRegions": [
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            ],
            "content": "Table 1 .-- Mean number (standard error in parentheses) of first-year juveniles counted/minute off the Mendocino coast during August, 1989. Results from other years provided for comparison. n=number of one minute assessments."
        },
        {
            "spans": [
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            ],
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            ],
            "content": "Species"
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        {
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            ],
            "content": "1983 n=36"
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            "content": "1984 n=57"
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            ],
            "content": "1985 n=50"
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            ],
            "content": "1986 n=103"
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                    "length": 10
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            ],
            "content": "1987 n=112"
        },
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                    "length": 9
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            ],
            "content": "1988 n=62"
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            ],
            "content": "n=184"
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            ],
            "content": "S. flavidus"
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            "content": "6.58"
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            "content": "115.60"
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            "content": "5.94"
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            "content": "(1.54)"
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            "content": "(2.08)"
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            "content": "(1.35)"
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            "content": "(0.56)"
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            "content": "Total"
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            "content": "0.68"
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            "content": "8.38"
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            "content": "190.50"
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            "content": "23.35"
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            "content": "291.67"
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            "content": "141.29"
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            "content": "11.69"
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            "content": "(0.19)"
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            ],
            "content": "(2.33)"
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        {
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            ],
            "content": "(29.82)"
        },
        {
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                    "length": 6
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            "content": "(3.91)"
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        {
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                {
                    "offset": 61101,
                    "length": 7
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            ],
            "content": "(33.99)"
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        {
            "spans": [
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                    "offset": 61109,
                    "length": 7
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            ],
            "content": "(16.88)"
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        {
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                    "offset": 61117,
                    "length": 223
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            "content": "Species"
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                        6.4137,
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            ],
            "content": "1984 n=57"
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            "spans": [
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                    "offset": 61359,
                    "length": 9
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            ],
            "content": "1985 n=50"
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                    "offset": 61369,
                    "length": 10
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            "content": "1986 n=103"
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                    "offset": 61380,
                    "length": 10
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            "content": "1987 n=112"
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                    "offset": 61391,
                    "length": 9
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            "content": "1988 n=62"
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                    "length": 10
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            ],
            "content": "1989 n=184"
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            "spans": [
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                    "offset": 61412,
                    "length": 11
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            ],
            "content": "S. flavidus"
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            "spans": [
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                    "offset": 61424,
                    "length": 4
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            ],
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            ],
            "content": "4.39"
        },
        {
            "spans": [
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                    "length": 6
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            ],
            "content": "135.17"
        },
        {
            "spans": [
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                    "offset": 61436,
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            "content": "6.73"
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            ],
            "content": "89.39"
        },
        {
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            "content": "0.92"
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                    "length": 4
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            "content": "1.26"
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            "content": "(1.48)"
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        {
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            "content": "(26.00)"
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            "content": "(2.29)"
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            "content": "(18.42)"
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            "content": "(7.94)"
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            "content": "(0.81)"
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            "content": "S. mystinus"
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            "content": "(5.17)"
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            "content": "(66.72)"
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            "content": "(E. Hobson, FTS 556-0565)"
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            "content": "Trends in Sablefish Abundance and Diet with Depth and Time of Day"
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            "content": "AVE. NUMBER"
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            "content": "27"
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            "content": "650"
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            "content": "AVERAGE LENGTH (mm)"
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            "content": "600"
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            "content": "611.3 (9.2)"
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            "content": "560.6"
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            "content": "(3.5)"
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            ],
            "content": "546.9 (2.8)"
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            "content": "500"
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            "content": "(3.5)"
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            "content": "499.8"
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            "content": "(6.7)"
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            "content": "(6.1)"
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            "content": "1200 to 1500"
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            "content": "1500 to 1800"
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                    "length": 12
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            "boundingRegions": [
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            ],
            "content": "1800 10 2400"
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            "boundingRegions": [
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            "content": "TIME"
        },
        {
            "spans": [
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                    "offset": 64027,
                    "length": 65
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            ],
            "boundingRegions": [
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            ],
            "content": "Figure 3. Average gut volumes for major prey groups of sablefish."
        },
        {
            "spans": [
                {
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            ],
            "content": "Sablefish diet also shows trends with depth and time of day (Figure 3). Fishes increase as part of the diet from 30-50 percent over a depth range of 183-1281 m. The timing of certain prey taken from pelagic habitats shows a strong decline in the diet during morning and mid-day (approximately 0900-1500)."
        },
        {
            "spans": [
                {
                    "offset": 64398,
                    "length": 317
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            ],
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            ],
            "content": "Sablefish have a strong pelagic feeding com- ponent. This means that a substantial portion of the population will be off-bottom and unavailable to bottom trawl gear. This has implications for estimating population size, especially since the timing of this off-bottom behavior is not uniform. (P. Adams, FTS 556-0565)."
        },
        {
            "spans": [
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            ],
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            ],
            "content": "GROUNDFISH PHYSIOLOGICAL ECOLOGY INVESTIGATIONS"
        },
        {
            "spans": [
                {
                    "offset": 64764,
                    "length": 19
                }
            ],
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            ],
            "content": "Rockfish Conference"
        },
        {
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                    "length": 673
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            ],
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            ],
            "content": "Fishery Biologists Drs. Jeannette Whipple and Mickey Eldridge attended a joint Japanese- American conference on reproduction and early life history of rockfishes (Genus Sebastes), June 26- July 1, at the University of Hawaii (see p. 6). Eldridge presented a paper entitled \"Reproductive performances of yellowtail rockfish, Sebastes flavidus\" which included much of the research findings from over 3 years of studies on the yel- lowtail rockfish from Cordell Bank, California. Results that described and analyzed reproductive strategies were organized by multiple levels in an attempt to provide a comprehensive overview of reproductive life history of yellowtail rockfish."
        },
        {
            "spans": [
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            ],
            "content": "Expansion of Yellowtail Rockfish Sampling"
        },
        {
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                    "length": 786
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            ],
            "boundingRegions": [
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            ],
            "content": "Three years of studies on the reproduction and physiological conditions of yellowtail rockfish from Cordell Bank, California, were recently com- pleted. Preliminary results showed that this population had many traits typical of fish from the southern extent of their range. There were also some unique traits that may relate to their remote seamount habitat. In order to further characterize this population and to relate it to other yellowtail rockfish populations throughout its range, an ex- panded sampling program is planned that will pro- vide the opportunity to compare the Cordell Bank population with those from Queen Charlotte Sound, the central Washington coast, and Heceta Bank, Oregon. The research is to include synoptic studies that cover such aspects as blood nutrients,"
        },
        {
            "spans": [
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            "content": "17"
        },
        {
            "spans": [
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                    "length": 335
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            ],
            "content": "diseases and parasites, gonadal histology, and general measures of condition. Fecundity studies that examine the factors relating to reproductive and adaptive capacities will also be part of this research. The program will begin in November and sampling will be done on both chartered and commercial vessels. (J. Whipple, FTS 556-0565)"
        },
        {
            "spans": [
                {
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            ],
            "content": "GROUNDFISH ANALYSIS INVESTIGATIONS"
        },
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            ],
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            ],
            "content": "Widow Rockfish Stock Assessment Draft Prepared"
        },
        {
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                {
                    "offset": 66708,
                    "length": 472
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            ],
            "boundingRegions": [
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            ],
            "content": "Fishery Biologists Joseph Hightower and Wil- liam Lenarz of the Groundfish Analysis Investiga- tions prepared a draft of the annual stock assessment report of the widow rockfish fishery. Their assess- ment utilized catch-at-age data collected from the fishery between 1980 and 1988. Deterministic cohort analysis (computer program GENCOH) and stochastic catch at age analysis (computer program Cagean and the stock synthesis model of Methot) were used to analyze the data."
        },
        {
            "spans": [
                {
                    "offset": 67181,
                    "length": 878
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            ],
            "boundingRegions": [
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                    "polygon": [
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            ],
            "content": "The deterministic and stochastic approaches have different strengths and weaknesses. The deter- ministic approach assumes that catches-at-age are measured without error, which is unlikely, and it is necessary to provide starting values of fishing mor- tality. However the deterministic approach allows age specific selectivity to vary from year to year. The stochastic approaches do not allow age specific selectivity to vary from year to year and also require some constraints on starting values of fishing mor- tality. However the stochastic approaches fit fewer parameters and allow catch-at-age to be measured with error. The stock synthesis model allows age specific selectivity curves to vary from area to area. This feature was explored for three separate areas. While the results were promising, the practical use of area specific selectivity curves awaits further work."
        },
        {
            "spans": [
                {
                    "offset": 68060,
                    "length": 572
                }
            ],
            "boundingRegions": [
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            ],
            "content": "While there is some uncertainty in the strength of recent year-classes and current biomass, results of the assessment indicate that biomass is lower than in previous years and that the harvest should be reduced. The lower biomass is the result of the normal fishing down process and the entry of two very weak year-classes into the fishery. The biomass is estimated to be close to the maximum sustainable yield level. The authors recommend that the 1990 harvest be set at 7,900 t. This is lower than the expected 1989. harvest, 12,400 t, and the 1984-88 average, 10,000 t."
        },
        {
            "spans": [
                {
                    "offset": 68633,
                    "length": 642
                }
            ],
            "boundingRegions": [
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            ],
            "content": "The report will serve as the technical basis for the recommendation of allowable biological catch (ABC) by the Groundfish Management Team to the Pacific Fishery Management Council after review. The review process began in Tiburon, August 7-9, when Hightower and Lenarz presented the report to the Ad Hoc Stock Assess- ment Committee of the team. Hightower also presented this assessment to the team later in the week. The report has been distributed to the Scientific and Statistical Committee of the Coun- cil for further review. The team will make its recommendation for ABC during the November Council meeting. (J. Hightower, FTS 556-0565)"
        },
        {
            "spans": [
                {
                    "offset": 69276,
                    "length": 31
                }
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            ],
            "content": "INFORMATION TECHNOLOGY SERVICES"
        },
        {
            "spans": [
                {
                    "offset": 69308,
                    "length": 61
                }
            ],
            "boundingRegions": [
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            ],
            "content": "Inspector General Reviews Information Technology 1995 Project"
        },
        {
            "spans": [
                {
                    "offset": 69370,
                    "length": 840
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "A special unit of the Commerce Inspector General's (IG) office has been reviewing future high-tech procurements, including major com- puter systems within NMFS. Two of their specialists were appointed to survey the NMFS Information Technology (IT) project, and have been gathering information about regional com- puter resources, planning processes for the proposed NMFS-wide IT-95 computer system, and the Request for Proposal for the system. Dorothy Roll, Computer Systems Analyst, has been assisting the Washington office in these in- teractions with the IG. A report on the investiga- tion was released by the IG in August, in which the suitability of the IT-95 system project was questioned. NMFS and the IG office are now negotiating the issue, and until further notice, action on the IT-95 project is on hold. (D. Roll, FTS 893-7057)"
        },
        {
            "spans": [
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                    "offset": 70211,
                    "length": 12
                }
            ],
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            ],
            "content": "PUBLICATIONS"
        },
        {
            "spans": [
                {
                    "offset": 70224,
                    "length": 9
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 20,
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            ],
            "content": "Published"
        },
        {
            "spans": [
                {
                    "offset": 70234,
                    "length": 226
                }
            ],
            "boundingRegions": [
                {
                    "pageNumber": 20,
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                }
            ],
            "content": "Butler, John L., Carol A. Kimbrell, William C. Flerx and Richard D. Methot. 1989. The 1987-88 demersal fish surveys off central California (34°30'N to 36'30'N). U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS-SWFC-133, 11 p."
        },
        {
            "spans": [
                {
                    "offset": 70461,
                    "length": 2
                }
            ],
            "boundingRegions": [
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                    "pageNumber": 20,
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            ],
            "content": "18"
        },
        {
            "spans": [
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                    "offset": 70464,
                    "length": 217
                }
            ],
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                }
            ],
            "content": "Mason, Janet E. 1989. The southern California jack mackerel fishery, and the age and length composi- tion of the catch for the 1972-73 through 1983-84 seasons. Calif. Dep. Fish and Game, Mar. Res. Tech. Rep. 58, 38 p."
        },
        {
            "spans": [
                {
                    "offset": 70682,
                    "length": 182
                }
            ],
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                    ]
                }
            ],
            "content": "Moffitt, Robert B., Frank A. Parrish and Jeffrey J. Polovina. 1989. Community structure, biomass and productivity of deepwater artificial reefs in Hawaii. Bull. Mar. Sci. 44:616-630."
        },
        {
            "spans": [
                {
                    "offset": 70865,
                    "length": 959
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "Artificial reef modules constructed of plastic or concrete were deployed at three sites in deep water on Penguin Bank, Hawaii, in October 1985. Fish communities were censused shortly after deploy- ment and irregularly thereafter, by using the manned submersibles Makalii and Pisces V. In determining the aggregated biomass of transient fish species, depth of reef placement was more important than the reef's structural material and configuration. Con- versely, reef structural material and configuration were more important than depth in determining the species diversity, richness and perhaps biomass of resident species attracted to these deepwater artifi- cial reefs. Results suggest that small-scale, deep- water artificial reefs in Pacific island areas function primarily as devices for aggregating fish rather than increasing fish production and that reef configura- tion and structural material are not very important in aggregating transient species."
        },
        {
            "spans": [
                {
                    "offset": 71825,
                    "length": 153
                }
            ],
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                    ]
                }
            ],
            "content": "Polovina, Jeffrey J. 1989. A debate on responsible artificial reef development. Part III. Should anyone build reefs? Bull. Mar. Sci. 44:1056-1057 (Note)."
        },
        {
            "spans": [
                {
                    "offset": 71979,
                    "length": 144
                }
            ],
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                }
            ],
            "content": "Polovina, Jeffrey J. and Ichiro Sakai. 1989. Impacts of artificial reefs on fishery production in Shimamaki, Japan. Bull. Mar. Sci. 44:997-1003."
        },
        {
            "spans": [
                {
                    "offset": 72124,
                    "length": 685
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "The role of artificial reefs as a tool for increasing fishery production rather than just aggregating fish is addressed for two fisheries, octopus, Octopus dofleini, and flatfish, (Pleuronectidae), near Shimamaki, Japan. The time series of catch and effort data examined covers periods before and after two adjacent fishing grounds received 8,645 and 40,766 m3 of artificial reef. Octopus catches were increased by 4% per 1,000 m3 of artificial reef or by an average of 1.8 kg/m3 of artificial reef. Artificial reefs aggregated flatfishes but did not increase catches in the regions. A survey of fishermen in the two regions revealed that the reefs generally are considered beneficial."
        },
        {
            "spans": [
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                    "offset": 72810,
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                }
            ],
            "content": "Ralston, Stephen and Happy A. Williams. 1989. Numerical integration of daily growth increments: An efficient means of ageing tropical fishes for stock assessment. Fish. Bull., U.S. 87:1-16."
        },
        {
            "spans": [
                {
                    "offset": 73000,
                    "length": 153
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            ],
            "boundingRegions": [
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            ],
            "content": "For an objective, cost-effective ageing methodology applicable to tropical species, a new approach to estimating parameters of the von Bertalanffy growth"
        },
        {
            "spans": [
                {
                    "offset": 73154,
                    "length": 605
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "equation through the study of otolith microstructure was developed and applied to Pristipomoides zonatus, a deepwater snapper widely distributed throughout the Indo-Pacific region. The average width of sagittal daily growth increments was used to measure otolith growth rate, which was then related to the size of the otolith. The data were numerically integrated, providing estimates of age (in years) at regular 500-um increments to otolith length, which was then used to predict fork length (FL mm) at age with regression analysis. The data were fitted to the von Bertalanffy growth model, resulting in"
        },
        {
            "spans": [
                {
                    "offset": 73760,
                    "length": 433
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            ],
            "boundingRegions": [
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            ],
            "content": "FL=442 (1-exp(-0.234(Age+0.892))). The method was critically examined and validated through the study of 1) annual hyaline and opaque markings that appear in the otoliths, 2) Monte Carlo simulation, 3) length-frequency analysis, 4) ex- amination of spawning seasonality relative to back- calculated birth date taken from the time of first annulus formation, and 5) empirical comparisons with the literature concerning snapper growth."
        },
        {
            "spans": [
                {
                    "offset": 74194,
                    "length": 216
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                }
            ],
            "content": "Seaman, William, Jr., Raymond M. Buckley and Jeffrey J. Polovina. 1989. Advances in knowledge and priorities for research, technology and management related to artificial aquatic habitats. Bull. Mar. Sci. 44:527-532."
        },
        {
            "spans": [
                {
                    "offset": 74411,
                    "length": 208
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "Seki, Michael P. and Michael W. Callahan. 1988. The feeding habits of two deep slope snappers, Pris- tipomoides zonatus and P. auricilla, at Pathfinder Reef, Mariana Archipelago. Fish. Bull., U.S. 86:807-810."
        },
        {
            "spans": [
                {
                    "offset": 74620,
                    "length": 90
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            ],
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                }
            ],
            "content": "Ueber, Edward. 1989. Xanthic, gigantic China rock- fish. Calif. Fish and Game 75(1):47-48."
        },
        {
            "spans": [
                {
                    "offset": 74711,
                    "length": 46
                }
            ],
            "boundingRegions": [
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            ],
            "content": "Approved by Science and Research Director, SWR"
        },
        {
            "spans": [
                {
                    "offset": 74758,
                    "length": 171
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            ],
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                        7.5135,
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                }
            ],
            "content": "Bakun, Andrew. Global warming and the coastal up- welling system. For publication in Provocative Statement, Greenhouse Effects Workshop, Univer- sity of California, Davis."
        },
        {
            "spans": [
                {
                    "offset": 74930,
                    "length": 142
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "Bakun, Andrew. Global climate change and intensifica- tion of coastal ocean upwelling systems. For con- sideration for publication in Science."
        },
        {
            "spans": [
                {
                    "offset": 75073,
                    "length": 356
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "Boehlert, George W., Muneharu Kusakari and Juro Yamada. Oxygen consumption during gestation in female Sebastes schlegeli and a comparison with embryonic oxygen requirements. U.S .- Japan Cooperative Seminar, Rockfishes of the Genus Sebastes: Reproduction and Early Life History, Honolulu, HI 96822-2396, 26- 30 June 1989. En- vironmental Biology of Fishes."
        },
        {
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                        10.0095,
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                }
            ],
            "content": "Cohen, Daniel M., Richard H. Rosenblatt and H. Geof- frey Moser. Biology and description of a bythitid fish from deep-sea thermal vents in the tropical"
        },
        {
            "spans": [
                {
                    "offset": 75582,
                    "length": 2
                }
            ],
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            "content": "19"
        },
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                    "length": 72
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            ],
            "content": "eastern Pacific. For consideration for publication in Deep Sea Research."
        },
        {
            "spans": [
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                    "offset": 75658,
                    "length": 217
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            "content": "Conte, Frank P., Kazunori Takano, Akihiro Takemura and George W. Boehlert. Ontogeny of the sodium pump in larval rockfish, Sebastes. For publication in the Rockfish Symposium Papers -- Environmental Biology of Fishes."
        },
        {
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            "content": "Gerrodette, Tim and William G. Gilmartin. Demographic consequences of changed pupping and hauling sites of the Hawaiian monk seal. For consideration for publication in Science."
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            ],
            "content": "Henderson, John R. Recent entanglements of Hawaiian monk seals in marine debris. For publication in the Proceedings of the Second International Conference on Marine Debris."
        },
        {
            "spans": [
                {
                    "offset": 76226,
                    "length": 217
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            ],
            "content": "Holland, Kim, Richard Brill and Randolph K. C. Chang. Horizontal and vertical movements of Pacific blue marlin captured by sport- fishing techniques. For consideration for publication in Fishery Bulletin, U.S. [Note]."
        },
        {
            "spans": [
                {
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                    "length": 149
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            ],
            "content": "Johanos, Thea C. Juvenile Hawaiian monk seal survival. For publication in the Eighth Biennial Conference on the Biology of Marine Mammals (Abstract)."
        },
        {
            "spans": [
                {
                    "offset": 76594,
                    "length": 180
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            ],
            "content": "MacCall, Alec D. Impacts of global warming on California's marine fisheries. For publication in Provocative Statement, Greenhouse Effects Workshop, University of California, Davis."
        },
        {
            "spans": [
                {
                    "offset": 76775,
                    "length": 180
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            ],
            "content": "Moser, H. Geoffrey and George W. Boehlert. Ecology and distribution of pelagic larval and juvenile Sebastes. For consideration for publication in En- vironmental Biology of Fishes."
        },
        {
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            ],
            "content": "Muench, R. D., J. T. Gunn and D. M. Husby. Mid-winter 1988 physical oceanographic observations in the Scotia Sea. For consideration for publication in the Antarctic Journal of the United States."
        },
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                    "offset": 77151,
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            ],
            "content": "Parks, Wesley W., Patricia Donley and Samuel F. Herrick, Jr. U.S. trade in tuna for canning, 1987. For con- sideration for publication in Marine Fisheries Review."
        },
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                    "offset": 77314,
                    "length": 198
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            "content": "Sakagawa, Gary T. Are U.S. regulations on dolphin-tuna fishing driving U.S. seiners to foreign-flag registry? For consideration for publication in the North American Journal of Fisheries Management."
        },
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            "content": "Shimizu, Motohiro, Muneharu Kusakari, Mary M. Yok- lavich, George W. Boehlert and Juro Yamada. Ultrastructure of the epidermis and digestive tract in Sebastes embryos, with special reference to the up- take of exogenous nutrients. For publication in the Rockfish symposium Papers -- Environmental Biol- ogy of Fishes."
        },
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            "content": "Yoklavich, Mary M. and George W. Boehlert. Uptake and utilization of 14C-glycine by Sebastes melanops embryos. For consideration for publication in En- vironmental Biology of Fishes."
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            "content": "Administrative Reports"
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            ],
            "content": "Administrative Report LJ-89-07 by Christina H. Perrin and Anthony P. Majors \"U.S. Pacific albacore fishery data base description\" is not available for distribution."
        },
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            ],
            "content": "Edwards, Elizabeth F. and Christina H. Perrin. 1989. Effects of dolphin group type, percent coverage, and fleet size on estimates of dolphin mortality derived from tuna vessel observer data. SWFC Admin. Rep., La Jolla, LJ-89-22, 24 p."
        },
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            "content": "Forney, Karin A., Doyle A. Hanan and Jay Barlow. 1989. Detecting tends in harbor porpoise abun- dance using aerial surveys: A preliminary report based on three years. SWFC Admin. Rep., La Jolla, LJ-89-20, 13 p."
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            ],
            "content": "Wetherall, Jerry A. 1989. Strategic planning for North Pacific squid driftnet entanglement research. SWFC Admin. Rep., Honolulu, H-89-9, 51 p."
        },
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            "content": "UNITED STATES DEPARTMENT OF COMMERCE"
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            "content": "NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION NATIONAL MARINE FISHERIES SERVICE SOUTHWEST FISHERIES CENTER 8604 LA JOLLA SHORES DRIVE P.O. BOX 271 LA JOLLA, CALIFORNIA 92038 OFFICIAL BUSINESS PENALTY FOR PRIVATE USE, $300"
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