{"Bibliographic":{
"Title":"Southwest Fisheries Center Monthly Report: June 1974",
"Authors":"",
"Publication date":"1974",
"Publisher":"Southwest Fisheries Center (U.S.)"
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"Language":"English",
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    "content": "T\nF\nRCE\n*\nUNITED\nMERICA\nED STATES OF AN\nHONOLULU\nLA JOLLA\nTIBURON\nSOUTHWEST FISHERIES CENTER\nMONTHLY REPORT-JUNE 1974\nResearch Highlights\nPage\n. Publications 1\n. New Information on Albacore Migration Gathered on\nJordan Cruise 1\n. Silver Salmon Inoculated and Tagged in Preparation\nfor Transfer to Pens at Tiburon . 3\n. Tiburon Laboratory Program Aids in Fishery Development 4\n. Energy Budget Constructed for Skipjack Tuna 7\n. NMFS-Designed Large-Volume Purse Seine Net Modified for Improved Fish Handling 9\nEfforts Continue to Complete Analysis of Porpoise Population Data 10\n· Cooperative Program to Investigate Annual Striped Bass Kill Begins 11\n· Progress in State/Federal Coastal Fisheries Program 12\n. Third Shipment of Live Bait Reaches Hawaii in Transport Tank; Some Problems Still in Evidence . . . 20\n. Tuna Baitfish Workshop Held at SWFC Honolulu Laboratory 25\nNOAA/NMFS\nRECEIVED JUL 2 4 1974\nTIBURON MARINE LABORATORY\nSOUTHWEST FISHERIES CENTER La Jolla, California\nHONOLULU LABORATORY LA JOLLA LABORATORY TIBURON LABORATORY\nMONTHLY REPORT-JUNE 1974\nSTATUS OF PUBLICATIONS\nPublished\nHester, Frank J. 1974. Some considerations of the problems associated with the use of live bait for catching tunas in the tropical Pacific Ocean. Mar. Fish. Rev.\n35(5): 1-12. (MFR Paper 1060.)\nThis report provides a summary of the tropical Pacific tuna live-bait fishing methods, identifies the major problems restricting the expansion of live-bait fisheries in the Pacific, and gives references and suggestions on methodology to investigators interested in working on baitfish problems.\nNeill, William H. , and E. Don Stevens. 1974. Thermal inertia versus thermoregulation in \"warm\" turtles and tunas. Science (Wash., D.C.) 184(4140): 1008-1010. (No abstract.)\nALBACORE FISHERIES INVESTIGATIONS\nNew Information on Albacore Migration Gathered on Jordan Cruise\nThe NOAA research vessel, David Starr Jordan, returned July 1 from a 33-day albacore-oceanography survey conducted in\nThis report does not constitute publication and is for information only.\ncooperation with the American Fishermen's Research Foundation (AFRF). The AFRF chartered five albacore fishing vessels to conduct fish scouting and tagging operations. The Jordan con- ducted oceanographic stations and trolled for albacore. Daily radio contact was maintained ship-to-ship and ship-to-shore.\nAccording to Mr. R. Lynn, Oceanographer, who was the scientific leader on the cruise, the 1974 NMFS-AFRF cooperative albacore survey findings differ in major aspects from the surveys con- ducted in 1972 and 1973. In the offshore region, 135ºW, the temperature and salinity structure revealed that the fronts which have characteristically delineated the boundaries of the Transition Zone in earlier years were poorly formed. Consider- able lateral mixing of the major water masses had occurred. The scientists on the Jordan found many pockets of Pacific Central water interspersed with Subarctic water. Many minor fronts were found. In apparent response to these mixed con- ditions the albacore tunas, as shown by the catches, were widely scattered over a large region. Catches were made from 130°W-143ºW in early June as the vessels moved out through the intended survey region. While these early catches were good sporadically, no productive centers of fishing developed. During the 1972 and 1973 surveys productive fishing centers that lasted 2-3 weeks developed along major frontal regions to the west of 136°W. Despite the increased effort provided by the large number of independent vessels during this year, the albacore vessels found that good catches could not be sustained from day-to-day in any given locale.\nAfter the second week in June the vessels moved inshore of 134°W where two major centers of fishing developed: near 35°30'N, 132ºW and 34ºN, 126ºW. The Jordan worked about the northwesterly center and found the catches associated with a frontal feature that appeared as a tongue of warm, saline water, protruding eastward.\nThe trolling effort by the Jordan provided valuable information. Repeated crossings of fronts frequently revealed albacore to be concentrated on one side and/or very near the front (i.e., near the surface temperature and salinity break). Scientists on the Jordan were able to bring the fleet onto productive fishing areas in three instances. In all, the cooperation between the research charter vessels, the independent fishing vessels, and the Jordan was highly effective. The fishing vessels tagged 1,369 albacore, more fish than had been tagged in any previous cooperative effort.\n2\nThe 1974 survey added considerable information to the study of the migration of albacore tuna and the association of albacore to oceanic frontal features, a principal objective of the cruise. The original intent, however, was to con- centrate the study upon that part of the migration that leads toward the northern centers of the fishery. While anticipated tag returns have yet to show where the albacore from the study region will appear in the fishery, it appears likely that this study again centered on the fish that will appear in the Cali- fornia fishery. During two runs to the north (40°30'N) catches were negligible and temperatures were cool for albacore. A study of the northern migration would most likely be more successful if attempted at a later period.\nCOASTAL FISH COMMUNITIES INVESTIGATIONS\nDistinctive Activity Patterns of Small Juveniles of Some Kelp-Bed Fishes Defined\nDr. Edmund Hobson, Project Leader at the Tiburon Laboratory is currently observing the small juveniles of several kelp bed fishes, which are especially numerous during this season. Dr. Hobson's work is being done at Catalina Island. The activity patterns of these juveniles are being compared to those of the larger juveniles and adults, which have been the major subjects of the program to date. One expects to find differences in small juveniles because of differing food requirements related to their smaller size, but some of the differences found have been unexpected. For example, the olive rockfish, Sebastes serranoides, a major recreational species, was earlier found to be nocturnal when between about 50 and 120 mm long, and to occur in different locations at night than during the day. Current study shows that this fish is diurnal when smaller than about 45 mm, and to have day-night distributions strikingly different from the larger individuals. Clearly one must be familiar with each species throughout the 24-hour daily cycle, as well as through its different life history stages before that species' require- ments are known, including which of the many inshore habitats it utilizes.\nCOASTAL FISHERIES INVESTIGATIONS\nSilver Salmon Inoculated and Tagged in Preparation for Transfer to Pens at Tiburon\nJointly conducted by U.C., Davis Sea Grant Extension, the San Francisco Tyee Club, the California Department of Fish\n3\nand Game and the NMFS Laboratory at Tiburon, a project is underway to determine the feasibility of rearing silver salmon in salt water pens at Tiburon for later release into San Francisco Bay. Dr. Robert Brocksen, Research Physiologist and Mr. Lloyd Richards, Biological Technician at the Tiburon Laboratory, report that the pen for receiving the salmon was assembled and installed. Several dives by staff members were made to reinforce pilings at the Tiburon Laboratory dock where the pen is secured. Mr. Richards, Cris DeWees (U.C. Davis Sea Grant Extension) , and Coop Cooper (Agricultural Extension Service), traveled to the Department of Fish and Game's Mad River Hatchery in Eureka to inoculate 10,000 silver salmon for vibrio. At the same time the fish were fin clipped and tagged with a coded wire tag by John Rowell, Department of Fish and Game, and Marion Rowell, a technician employed by the San Francisco Tyee Club. The 1-week mortality, after inoculating and tagging, was only 14 fish out of 10,000.\nTiburon Laboratory Program Aids in Fishery Development\nThe fishery resources found in coastal waters of California are not being fully exploited because the industry does not have the technique to profitably harvest the resource or is not aware of the existence of value of the resources. Under Fishery Biologist Susumu Kato of the Tiburon Laboratory, the above problems are being attacked by researching more efficient fishing gear and techniques, and introducing them to the industry, and by investigating the value and extent of un- utilized or underutilized resources. The long-range objective is to develop and introduce methodology that will enable profitable fisheries to develop for such resources as the pelagic red crab, sea urchin, basking shark, California Tanner crab, and others.\nThis month Mr. Kato met with shrimp, crab, and trawl fisher- men to discuss proposed joint work at Santa Barbara and Avila Beach. Rock crab fishermen are looking for ways to increase their production while shrimp fishermen are troubled by the large number of fish taken in their trawls. Several trawl fishermen are interested in testing a trawl net developed in Canada, and also in exploring deep waters not presently fished. All these problems will be investigated as time permits.\n* *\n* *\nRed Crab -- Mr. Kato also traveled to Garrapanta Trout Farm in Carmel this month to set up a red crab feeding experiment with rainbow trout. The owner of the trout farm feels that a red-fleshed trout would be suitable for his line of specialized\n4\ntrout products. It has been shown previously that the carotenoid pigments found in red crabs are effective in coloring the flesh of rainbow trout. Marketing tests will be conducted when the colored trout are harvested, probably about 6-8 weeks after initiation of feeding red crabs. Some of the red crab feed was supplied by the Pacific Food Products Technology Laboratory in Seattle through Dr. John Spinelli.\nSea Urchin -- Only three firms were operating consistently throughout June, each processing 4000-5000 sea urchins a day. Due to high production of urchin roe in Japan and the Republic of Korea during the summer months, prices have been depressed in the Japanese market. About 10 California firms are expected to be operating in August, each firm handling 4000-10,000 urchins per day. At least two firms hope to process up to 20,000 urchins daily. Since supply is critical two new firms will concentrate their efforts in supplying rather than processing sea urchins. One of these firms plans to use 10 divers/tenders operating from a \"mother ship\" and two small diving boats.\nIt was learned recently that one sea urchin processing firm had gross sales of about $300,000 last year. Gross sales for the entire industry was probably in the order of 1.5 million dollars. Starting next month we will employ a part- time worker to sample the fishery and obtain more precise data on economics and on the sea urchins.\nAngler's Guide to the United States Pacific Coast in Preparation\nWork continued at the Tiburon Laboratory on the Pacific Angler's Guide being prepared by Fishery Biologist Jim Squire of the La Jolla Laboratory and Publications Specialist Susan Smith of the Tiburon Laboratory. The book describes marine sport fishes, fishing grounds, and angler facilities along the west coast from California to Alaska, and also includes Hawaii, American Samoa, and Guam.\nThis month the sections covering southern California, Oregon, and Washington were sent to outside reviewers and work began on the final drawings of the tropical Pacific fishes. The option of publishing the Guide as a special issue of Marine Fisheries Review to save pre-publication time and costs was investigated with Mr. John Smiles, Chief of NOAA Visual Services Branch in Rockville, whose staff is preparing the charts for the Guide. Because reduction of the charts would be necessary to fit MFR's format, resulting in considerable loss of chart quality and readibility, the idea was abandoned; it is, therefore, most likely that the Guide will be treated as a special one-of-a-kind publication, as had been previously planned.\n5\nFISH ENVIRONMENT INVESTIGATIONS\nSimulation Model for Tuna Distribution: First Stage Completed\nThe long-range goal of the Honolulu Laboratory's program on Life Studies of Tuna and Tunalike Fishes is to generate a predictive model of tuna distribution, abundance, and avail- ability to fisheries. The basis of the model is to be the joint physiological and behavioral responses of tunas to environmental variables, as determined in part through ex- perimental work with captive fishes. To explore the potential value of such a modeling approach and to provide an objective framework for further experimental work, Drs. W.H. Neill and A. E. Dizon have developed a simulation model for the responses of fishes to temperature, a variable of recognized importance in the ecology not only of tunas but also of fishes in general.\nThe procedure used in constructing the model was 1) to create a hypothetical tunalike fish (based on skipjack tuna) endowed with a simple set of capabilities and responses, all well recog- nized or reasonably deducible from extant experimental results; 2) \"follow\" the fish in computer-generated one-dimensional environments with temperature the only variable; and 3) look for consistencies between distributional features of the hypo- thetical fish and those reported for real tunas in real hetero- thermal environments. Physiological acclimation, accumulation and decay of thermal \"doses\" leading to lethal-temperature mortality, temperature preference, gradient perception, and basal swimming speed were treated deterministically; perception- contingent increases in swimming speed and the tendency to change swimming direction were modeled stochastically as a biased random walk with constant step-time (10 minutes in most simulations) .\nFirst runs of the model (without any a posteriori manipulation of process functions or input parameters) suggested a number of similarities between the behavior of the model and that of real tunas as observed at sea:\nHypothetical 50 cm long fish weighing 2 kg:\n1) tended to \"seek out\" and remain within a few degrees of their preferred temperatures in a linear gradient as steep as 1ºC/km but to randomly disperse in gradients of 0.1 or 0.01ºC/km until encountering temperatures near the upper or lower lethal limits;\n2) tended to \"aggregate\" at randomly encountered thermal fronts, regardless of temperature;\n6\n3) would tend to become \"trapped\" and concentrated in areas of unfavorable temperature under certain con- ditions of temporal change in the distribution of temperature; similarly, would tend to be absent from areas of favorable temperature under certain conditions of temporal change in the distribution of water temperature.\n4 ) would tend to be distributed within narrower thermal limits than conspecific fish of smaller size.\nNext steps in development of the model will involve attempts to test the validity of proposed process functions experimentally and to determine parameters of the verified functions for tunas more accurately. Simultaneously, the model will be optimized and extended for simulation in three-dimensional space characterized by variation in both temperature and oxygen concentration.\nEnergy Budget Constructed for Skipjack Tuna\nThe great economic importance of tunas and the many unique features of their physiology and behavior warrant intensive effort to develop a comprehensive model of the processes whereby they acquire and expend energy. Despite the frag- mentary nature of relevant physiological information on tunas, data from the best experimentally known tuna, the skipjack tuna, together with liberal application of the general paradigms of fish energetics, were sufficient to arrive at an energy budget for central Pacific skipjack tuna. This work, now represented by a rough-draft manuscript, was a joint effort by Drs. J. F. Kitchell and J.J. Magnuson of the University of Wisconsin and Dr. W.H. Neill of the Honolulu Laboratory.\nThe following table gives estimated energy budget parameters as functions of ration level, for a 1 kg skipjack tuna at 24ºC; daily ration is given as percent body weight consumed per day, assuming 1.1 kcal g - live food:\nRation\nProcess rate (calories/kilocalories . day)\nLevel\n%\nConsumption\nRespiration\nSDA\nExcretion\nEgestion\nGrowth\nStarvation\n0\n0\n31\n6\n2\n0\n-39\nMaintenance\n6.4\n48\n31\n7\n3\n7\n0\nRoutine\n(Winberg I)\n8.1\n61\n31\n9\n3\n9\n8\nNormally Active (Winberg II)\n14.5\n110\n63\n16\n6\n16\n8\n7\nConsidering that the metabolic rate of skipjack tuna may be virtually weight-independent (data from R. Gooding, Honolulu Laboratory) but that maximum daily ration probably declines allometrically with weight (~164 cal kcal -1day-1 . Wicar an exciting ecological speculation arises : skipjack tuna smaller than about 12 kg are growing at rates substantially less than maximal, being limited by availability of food and/ or predatory efficiency; skipjack tuna larger than about 15 kg obtain a maximum daily ration but are limited in further growth by a physiological constraint of large size coupled with an effective mechanism of heat retention -- overheating of the muscle mass, especially during bursts of feeding activity. Skipjack between 12 and 15 kg are affected by one limiting factor or the other, although less markedly. (Limits to fishes' energy intake, and, thus, growth are commonly environmental but rarely are dictated by organismal properties such as here suggested to be the case with skipjack tuna. ) Interestingly, the asymptotic length of skipjack tuna, calcu- lated from the von Bertalanffy growth model, varies from 82.3- 85.0 cm, depending on data source and treatment. Applying Magnuson's (1973) length-weight relationship, these maximum lengths correspond to maximum weights of 12.1-14.9 kg.\nCaloric Values Determined for Skipjack Tuna\nPrerequisite to serious consideration of fish-energetics prob- lems is accurate estimation of tissue caloric yields for the subject species. To complement construction of an energy budget for skipjack tuna, Dr. J.F. Kitchell and J.J. Magnuson of the University of Wisconsin and Dr. W.H. Neill of the Hono- lulu Laboratory have completed a caloric analysis of whole body, red muscle, and white muscle of just-caught and 10-day starved skipjack tuna.\nResults suggest that neither of the following popular rules- of-thumb applies to skipjack tuna: 1) 1 g wet weight = 1 kcal, 2) for starved fish, energy loss = weight loss x constant.\nJust-caught skipjack tuna, weighing 1.5 kg, had whole body averages of 1.46 kcal g-wet-1, 5.00 kcal g-dry-1, and 5.63 kcal g-ash-free-dry-1, with water constituting 70.8% of wet weight. Skipjack tuna of similar size and history but starved for 10 days in captivity had whole body averages of 1.18 kcal g-wet-1, with water constituting 74.7% of wet weight. Red muscle and white muscle showed the same trends as whole body, but decreases in kcal g-dry-1 and kcal g-ash-free-dry-1 for the two muscle tissues were only 25%, in red muscle, and 5% , in white muscle, as great as for whole body. Priority utili- zation of high-energy materials (fats) stored in the viscera\n8\npresumably accounted for the dramatic changes in whole-body energy content during starvation.\nThus, skipjack tuna tissues yield substantially more than 1 kcal g-wet-1, and, upon starvation, skipjack tuna not only metabolize their energy stores, in order of decreasing energy yield, but also hydrate.\nA first-draft manuscript, now being revised, describes these observations and proposes that, for fishes generally, the energy yield per unit live weight can be estimated from the ratio, dry weight/wet weight, with accuracy adequate for many bioenergetics applications.\nEffects of Temperature on Routine Metabolism of Skipjack Tuna\nProductivity of the seas in terms of tuna-flesh must depend on whether or not food supplies are adequate to provide the energy required by tunas for activity and growth. Messrs. R. K. C. Chang and B.M. Ito, under supervision of Dr. W.H. Neill, all of the Honolulu Laboratory, are extending pre- viously completed experiments on routine metabolism of skip- jack tuna at a single temperature (24°C) to temperatures throughout the skipjack's zone of thermal tolerance. These experiments will permit estimation of the energy requirement for routine activity in skipjack tuna at all temperatures where the fish are likely to occur.\nExperiments at 18° and 29°C have now been completed. Results offer the first direct confirmation of the notion that metabolism of intact tunas is largely temperature-independent. Partial analysis of data on oxygen-consumption at 18º and 29ºC indi- cates a Q10 of only 1.1 (metabolism at a given temperature only 10% more than at a temperature 10ºC lower); in fact, variability of the data gathered so far does not permit re- jection of the hypothesis that metabolism in skipjack tuna is completely independent of temperature (i.e., Q10 = 1.0).\nMARINE MAMMAL INVESTIGATIONS\nNMFS-Designed Large-Volume Purse Seine Net Modified for Improved Fish Handling\nModification of the large-volume purse seine net designed by Richard McNeely and his associates at the NMFS Northwest Fisheries Center in Seattle, was completed in San Diego June 22. According to Dr. Eric Barham, Porpoise Program\n9\nManager, the net was successful in helping to lower the por- poise kill rate when used during the NMFS charter cruise of the seiner, John F. Kennedy in November-December 1973, but fishermen encountered problems in handling the net when sacking fish. During the modification, additional strips were added to the bunt end, rolling strips strengthened, and larger corks added to part of the cork line. The safety panel of 14-inch mesh to prevent entanglement of porpoise is also incorporated into the NMFS net.\nThis re-worked net is now aboard a new tuna seiner, M/V South Pacific, where it will be used during regular commercial fishing operations, in a full trial of both its porpoise mortality-reducing and tuna fishing capabilities. Mr. Jerry Jurkovich of the NWFC is aboard the South Pacific, as an NMFS observer, to monitor the net's performance and record porpoise mortalities.\nEfforts Continue to Complete Analysis of Porpoise Population Data\nAdditional resources of manpower at the La Jolla Laboratory have been mobilized to complete the task of analyzing the voluminous data collected thus far on population dynamics of porpoises for incorporation in a report due in October 1974 on the impact of the tuna purse seine fishery on the porpoise populations of the eastern tropical Pacific. To this end, Dr. Gary Sakagawa of the Stock Assessment and Fishery Evaluation Investigations will assume overall coor- dination and responsibility for the quantitative tasks;\nadditional short-term and temporary personnel have been added to the staff to assist in computer programming. A contract has been given to Science Applications, Inc., of La Jolla, California to analyze measures of performance of the tuna fleet for possible trends. Dr. Tim Smith, Fishery Biologist in the Marine Mammal Investigations, will devote his major effort to the impact model.\n*\nAs an essential element in its Marine Mammal Investigations, the La Jolla Laboratory sends trained porpoise observers to sea on tuna seiners of the U.S. fleet to collect information on porpoise life history and mortality. To date 35 observer trips have been completed within the Commission Yellowfin Regulatory Area and information collection during these cruises has been key punched and entered into the data bank. Two additional \"inside\" cruises with NMFS observers aboard are still in progress.\n*\n1.0\nDr. William Perrin, Fishery Biologist at the La Jolla Lab- oratory, who is responsible for the conduct of life hstory studies on porpoise, is presently at the Smithsonian in Washington, D.C. to examine some 600 porpoise skulls sent to the Institution a year ago for cleaning by dermestid beetles. Dr. Perrin will collect data on the number of skull lesions caused by a parasitic nematode. Biologists have theorized that these nematode infestations are a major contributor to natural mortality in young spotted porpoise.\nPHYSIOLOGY INVESTIGATIONS\nEffect of Petroleum Products in Marine Environment Investigated at Marinas\nOne of the objectives of the Physiology Investigations at the Tiburon Laboratory is to determine the acute and chronic effects of toxicants, such as crude oils, on marine and anadromous fish and invertebrate species. Investigators at the Tiburon Laboratory are using gas liquid chromatography analysis techniques to identify and quantify the compounds contained in petroleum products. The techniques used involve an apparatus for concentrating samples, and testing new gas chromatograph column packing materials, coupled with the tem- perature programming.\nThese investigations in the laboratory have laid the ground work for approaching an actual field situation. Marinas are one potential site for the discharge of petroleum and its products into the ocean which remain unexplored. Visits to nearby marinas have provided samples of gasoline and diesel fuels, motor boat oil, and the surrounding water and inverte- brates which have been exposed to these contaminants. Process- ing of these samples with the developed GC techniques is yield- ing data on the actual components of the petroleum products used and their subsequent fate in the marine environment.\nCooperative Striped Bass Kill Program Begins\nA cooperative study involving the Oceanic Society, University of California Medical Center, Regional Water Quality Control Board, the California Department of Fish and Game and the Tiburon Laboratory, began this month to study the annual striped bass kill which occurs in San Francisco Bay, according to Fishery Biologist Max Eldridge of the Tiburon facility.\nA 24-hour water quality monitoring study was conducted June 19-20 during a spring tide condition involving a minus 1.7 ft.\n11\nlower low tide. Numerous dead fish were found, including one small fish killed in the same vicinity of the study. Preliminary analysis of the data shows that the prevailing conditions which existed at the sampling site were not harm- ful enough to produce a fish kill. A noticeable dissolved oxygen sag did occur during the lower low tide stage but never went lower than 6 ppm concentration. A simple in-situ bioassy study, located in the area of known fish kills, is currently underway involving juvenile and adult striped bass.\nSTOCK ASSESSMENT AND FISHERY EVALUATION INVESTIGATIONS\nProgress in State/Federal Coastal Fisheries Program\nStock Assessment Specialist Jean-Paul Troadec, Food and Agriculture Organization, Rome, arrived on June 2 at the La Jolla Laboratory to assist Alec MacCall, Fishery Biologist of the California Department of Fish and Game and Gary Stauffer, Fishery Biologist at the La Jolla Laboratory, in conducting the \"quick\" assessments of the local southern California fish stock as part of the cooperative CF&G/ SWFC marine recreational fisheries study. With his aid and guidance, reports were prepared on the status of six species: Northern anchovy (Engraulis mordax), Pacific sardine (Sardinops caerulea), Pacific mackerel (Scomber japonicus), California yellowtail (Seriola dorsalis), white seabass (Cynoscion nobilis), and Pacific bonito (Sarda chiliensis) .\nThe State/Federal Steering Committee for the cooperative CF&G/NMFS research contract met June 12 at the Southwest Fisheries Center and reviewed the progress of Messrs. MacCall and Stauffer's work to the present, and their short-term goals. Formal preparations to continue the contract into FY 1975 were initiated. At this meeting, John Radovich of the California Department of Fish and Game was elected Chairman of the Steering Committee.\nProgress Made on Stock-Recruitment Model of Fishes of the California Current Region\nMathematician J. Zweifel of the La Jolla Laboratory is con- tinuing work on the model to simulate the movement, growth and survival of fish larvae in the upper mixed layer of the California Current region. Alogrithms for temperature specific growth and the stranding of eggs and larvae on a\n12\nland mass have been completed. An analysis of temperature and/or size specific mortality is being carried out in order to provide best guess estimates of the parameters. Two- dimensional frequency arrays of drift speed and direction have been requested from the NMFS Pacific Environmental Group at Monterey and will be analyzed to determine the plausibility of pooling over similar areas and months.\nThe monitor or control program for the model which will allow tracking many larvae or spawnings at one time is being adapted from a computer simulation by Levison, Ward and Webb of random drifts of vessels in the Pacific Ocean. Many of their alogrithms are directly interpretable in terms of fish larvae and their attention to minimizing core and input-output requirements has offered useful suggestions.\nAtlantic Tuna Data Prepared for Studies on the Status of Stocks\nDr. G. Sakagawa and Messrs. K. Brennecke, A. Coan, and E. Holzapfel of the SAFE Investigations at the La Jolla Lab- oratory, were occupied this month in preparing data for studies on the status of Atlantic tuna stocks. The status of three important stocks of Atlantic tunas -- yellowfin, albacore and bigeye -- is scheduled to be determined before the 1974 annual meeting of the International Commission for the Conservation of Atlantic Tunas in Madrid, Spain.\nGrowth of Laboratory-Reared Northern Anchovy Described\nData from three experiments on growth of northern anchovy reared at the La Jolla Laboratory have been assembled by Fishery Biologists M. Kimura and G. Sakagawa. The data include fish from 2.9 mm at 2 days of life to 117.7 mm at approximately 20 months of life. A seasonal growth pattern has been discovered in the data.\nDuring the first year growth is rapid to about the third or fourth month; it then starts decreasing to an asymptote. A two-stage Gompertz growth model, programmed by Mathematician J. Zweifel of the La Jolla Laboratory, is being used to describe this seasonal change in growth.\nBrazilian Scientist Completes First Phase of Training\nMr. L.A. Zavala-Camin, Scientific Researcher with the Instituto de Pesca, Santos, Brazil, completed the first phase of a three- part training schedule with scientists in the Stock Assessment\n13\nand Fishery Evaluation Investigations at the La Jolla Lab- oratory. Since April, Mr. Zavala-Camin has been receiving training in techniques used in analyses and evaluation of data from longline tuna fisheries. Dr. G. Sakagawa, Fishery Biologist, supervised this phase of his training.\nStarting in July, Mr. Zavala-Camin will begin training in techniques used in application of dynamic pool models, under Dr. W. Lenarz, Fishery Biologist in this Investigation.\nDr. William Lenarz, Fishery Biologist at the La Jolla Lab - oratory, devoted much of the month to providing technical input in answers to questions brought forward at the Inter- American Tropical Tuna Commission Inter-Governmental meeting on Alternative Regulations and Enforcement, held in Washington, D.C., May 28-30, 1974. These questions were assigned to a sub-group that is chaired by Sr. Amin Zarur of Mexico. Dr. Steven Schanes, Commissioner to the IATTC, is coordinating the U. S. participation in the sub-group. Drs. William Fox and Lenarz are providing technical assistance to Dr. Schanes.\nThe questions posed to the sub-group concern allocation of the yellowfin tuna resource, impact of large vessels on the con- servation program, impact of uncontrolled growth of the fleet on the conservation program, and the possibility of limited entry of gear.\n*\nMr. James Squire, Fishery Biologist at the La Jolla Laboratory, who is in charge of the cooperative marine game fish tagging program, reports that billfishing is excellent along the east coast of the tip of Baja California. In June alone, 260 striped marlin were tagged in this area. Thus far in 1974, 680 bill- fish have been tagged.\nMr. Squire, accompanied by Mr. I. Barrett, Deputy Director of the Southwest Fisheries Center, visited fishing resorts in Baja California, June 24-28 to present the annual Thomas and Margaret Gardiner Foundation awards to the Mexican fishing boat captains from whose boats the greatest number of bill- fishes had been tagged off Baja California during the period, June 1973-June 1974. The Center's cooperative billfish tagging program is well-received in the area.\nSTOCK AND RECRUITMENT INVESTIGATIONS\nMr. K. Lal, Research Biologist of the California Department of Fish and Game, who is cooperating with Dr. Reuben Lasker,\n14\nPhysiologist at the La Jolla Laboratory, in an attempt to spawn and rear striped bass in a seawater aquarium, reports that a new experiment to study the effect of red and white lights on the maturation of gonads of striped bass began in mid-June.\nA larger tank, 15' x 4' was set up in the newly allotted space in the aquarium in lieu of a former smaller tank, 12' x 3', which has been removed.\nBiopsy of fish in all tanks showed no change in gonad de- velopment of females, but the majority of males continued to stay in ripe condition. Only one female with 0.65-0.7 mm eggs was injected with human chorionic gonadotrophins. In view of the anticipated delay in the maturation of females at La Jolla, a consignment of 10,000 eggs of striped bass was obtained from the Elk Grove hatchery on June 28 for completion of a study on the comparative survival of larvae in fresh water and through gradual acclimation to seawater. The eggs hatched in a temperature-controlled room at 17ºC on the next day without any mortality.\nAnalysis Completed on Relationship Between Weight of Anchovy Eggs and Larval Length at 4 Days\nDr. John Hunter, Fishery Biologist at the La Jolla Laboratory, completed an analysis this month on the relationship between the weight of anchovy eggs and the length of larvae at the age of 4 days. Length at age 4 days was dependent upon egg weight and temperature. For example, at 16℃ larvae from the smallest egg would be 4.0 mm whereas larvae from the largest eggs would be 4.5 mm. A difference of 0.5 mm is probably of negligible importance at temperatures above 16ºC because of a fast growth rate but at temperatures below 16℃ size at first feeding may be a significant element in survival.\nThis month, Dr. Hunter, assisted by Ms. C. Sanchez, Biological Technician, also established a relationship between anchovy egg volume and egg weight so that existent data could be used on seasonal trends in egg size. An interesting by-product of this analysis, according to Dr. Hunter, was that eggs spawned in response to injection of hormones had larger volumes for their weight than did ones naturally spawned.\nNeuston Net Samples - A Worthwhile Supplement to Standard CalCOFI Net Hauls\nA paper is being prepared by Dr. Elbert Ahlstrom, Senior Scientist and Ms. Betsy Stevens, Biological Technician at the\n15\nLa Jolla Laboratory for the International Council for the Exploration of the Sea meeting in Copenhagen, this fall, on the neuston net hauls on extended CalCOFI Cruise 7205. The neuston net is towed at the surface, with only about half of the net immersed. On this cruise, 115 neuston net hauls were taken on regular CalCOFI stations from off Puget Sound to below Cape San Lucas, Baja California. Offshore coverage was achieved by eight offshore latitudinal lines, run along latitudes 20, 24, 27, 31, 35, 39, 42, and 46ºN, usually ex- tending offshore to 145ºW longitude. On offshore coverage, 43 neuston hauls were taken.\nAbout 80% of the neuston hauls contained fish larvae. The average number obtained per haul over the CalCOFI grid was 60 larvae-juveniles; the average number per haul offshore was 24 larvae-juveniles.\nLarvae occurring in largest numbers in the neuston collections were those of the northern anchovy, Engraulis mordax and of the Pacific saury, Cololabis saira. Saury larvae were taken in 75 hauls (1,447 specimens), and eggs in 16 (3,138 eggs) . Offshore on the southernmost line (along latitude 20ºN) , C. saira was replaced by the dwarf tropical saury, Cololabis adocetus. The latter has 56-58 vertebrae, whereas C. saira has 63-68. Small larvae of the two species are remarkably similar in appearance, hence vertebral counts were used to separate them. The saury occurred offshore to 145°W longitude on most of the latitudinal lines.\nInterestingly, a much higher percentage of large anchovy larvae were taken by the neuston net than are proportionately taken in standard net tows -- a difference of about 15 times. Anchovy eggs and larvae were taken only on CalCOFI grid stations between lines 80-140 (off Pt. Conception to near Santa Maria Bay). Anchovy larvae were taken at 25 stations and anchovy eggs at 15. Most of the large collections of anchovy larvae were obtained in night hauls.\nAnother species that occurred in exceptionally large numbers at one station off the Columbia River was the sablefish, Anoplopoma fimbria. A rockfish larva-juvenile which is possibly that of Sebastes alutus occurred in large numbers in two collections. This appears to be another species that concentrates at the surface during its late larval stage.\nThe neuston hauls contained larvae-juveniles of 28 families. Over the same CalCOFI grid one would expect to take larvae of at least double this number of fish families. Hence, only a portion of the species are represented in neuston\n16\nhauls. However, for certain species, such as the Pacific saury, this is an indispensable tool for establishing dis- tribution. As a matter of interest, the number of saury larvae taken on this one cruise was equivalent to the number taken in two decades of collections made with oblique plankton hauls.\n*\nDr. H. Geoffrey Moser, Fishery Biologist at the La Jolla Lab- oratory, reports steady progress being made on the handbook for the identification of the larvae of eastern Pacific scorpion fishes. The sections of the genera Sebastes and Sebastolobus have been completed and the description of the genus Scorpaenodes is presently being prepared.\nDr. Moser has also begun taxonomic analysis of the fish he collected in Magdalena Bay, Mexico. This work is a cooperative project with Dr. C. Matthews of the University of Baja Cali- fornia, Ensenada, as part of a Mexican government-sponsored investigation of Magdalena Bay as a possible site for mari- culture. Two summer students, Elaine Carlin of Humboldt State University and Jack Christian of Madison High School in San Diego are sorting, identifying and working up the meristic data under the supervision of Dr. Moser.\nProgress Made in Investigation of Transfer of Chlorinated Hydrocarbons in Marine Food Chains\nThis month, Dr. E. Scura and Mr. G. Rommel of the Scripps Institution of Oceanography, working in cooperation with Ms. G. Theilacker, Fishery Biologist at the La Jolla Lab- oratory continued their investigation of the transfer of chlorinated hydrocarbons (CHC) in marine food chains. Ex- perimental evidence suggests that a large portion of the CHC introduced into the sea is associated with particles smaller\nthan lu. To understand the transfer of CHC up the food chain, it is essential to know to what extent these particles are available to the food chain. If the CHC remains associated with particles smaller than lu, presumably they will be largely unavailable to filter feeders or small particulate feeders. However, there is a possibility that there is a partitioning of CHC from the particle surface to the lipid component of algal cells. Also, the possibility exists that smaller par- ticles could aggregate and form larger particles that would be more readily available to filter feeders. This last possi- bility is presently being investigated. C14-DDT vapor is bubbled through filtered seawater (0.45u millipore) so that the DDT is introduced into the water in the dissolved state or adsorbed onto particles smaller than 0.45u. One hour after\n17\nintroduction, 85% of the C14-DDT is associated with particles larger than 0.45u. About 30% of the C14-DDT is associated with particles larger than 0.9u. These observations suggest that smaller particles are aggregating to form larger particles that could be directly available to the lower members of a marine food chain.\nExperiments conducted this month by Dr. John L. Roberts, NRC- NOAA Research Associate at the La Jolla Laboratory, have been of three types. Further tests with jack mackerel, Trachurus symmetricus, were made to add confirmational data to the study showing that reception of dissolved oxygen is not significant for reflex conversions between active and passive gill breathing in swimming fish.\nModerate success has been obtained with techniques for chronically implanting electrodes in the respiratory center of the Pacific mackerel, Scomber japonicus. The intent here is to detect any changes that occur in activity of respiratory interneurons as the mackerel shifts between active and ram modes of gill breathing whilst swimming at speeds between one and two body lengths per second.\nThe third group of experiments represents a joint effort by Dr. Roberts and Dr. Jeffrey B. Graham, Smithsonian Tropical Research Institute, Balboa, Canal Zone, underway for a month beginning in mid-June. Their objective is to differentiate between the contributions of the lateral red muscle and the main body of white muscle driving tail swimming in scombrids, and the relative thermal outputs for maintaining elevated body temperatures in tunas. Their pilot experiments with the Pacific mackerel indicate that even during cruise swimming (2-3 body lengths/sec), white muscle contributes. This has been determined with the use of fine wire electrodes to re- cord electromyograms and thermocouples to detect temperature changes. Both muscle types are active at the higher burst speeds that have been obtained (4-5 body lengths/sec), when the red muscle seems to reach peak energy output.\nThese results tend to confirm the earlier biochemical studies of Pritchard, Hunter, and Lasker on jack mackerel (Fish. Bul1., 69: 379) that show activity in both types of muscles at swimming speeds well below sustained speed thresholds. An earlier contention has been that the red and white muscle systems are separately active; the red at low cruising speeds, and the white only during burst swimming.\n18\nSURVEY SYSTEMS ANALYSIS INVESTIGATIONS\nFree- Fall Camera to be Used in the Study of \"Wild\" Fish Schools\nA unique camera recently developed at Scripps Institution of Oceanography by Professor J. Isaacs and Dan Brown, and the interpretation of the photographs it takes, is the sub- ject of a study being made by Lt. Roger Hewitt, NOAA Officer at the La Jolla Laboratory, and John Graves, a third year biology major from University of California at San Diego. The camera and its light source are encased in a watertight housing which is dropped untethered from the ship while passing over a school of fish. As the optical package descends downward, at one of several calibrated rates, a solid-state timer and solenoid initiate an electro-mechanical process which opens the shutter, activates the strobe, and advances the film. At a specified depth, the systems pres- sure release unit frees a load of expendable ballast and the camera, exposed film and marker buoy rise to the surface.\nThe present study, to be concluded before a second camera test in late July, has two principal objectives: the first is to determine from existing photos a frequency distribution of the minimum distances between adjacent fish and an estimate of the average school compaction (number of fish/unit volume) ; the second is to document the method used including a cost estimate in terms of man and equipment hours per photo, for the purpose of evaluating the expenditure of future effort.\nUsing a single photograph, lens geometry and a refractive correction, a preliminary calculation indicates a spread from fish to fish on the order of six body lengths and a density of 1.8 fish per cubic meter. Observations conducted by D.V. Uadokov on winter schooling herring describe a spatial density of 0.5-1 fish per cubic meter. (Ecology of Schooling Fish, pg. 59 .)\nAutomated Hydroacoustic Data Acquisition and Processing System Performs Under Laboratory Simulation; Field Testing Planned\nThe collection of large amounts of sonar target data, neces- sary for the isolation of sampling errors and biases associ - ated with acoustic assessment methods, has meant subjective logging by hand, accounting and processing procedures aboard the NOAA research vessel, Jordan, and at the laboratory in La Jolla, following a sonar cruise. The development of an\n19\nautomated sonar data acquisition and processing system would eliminate the problem of operator subjectivity and decrease the cost in acquiring adequate samples of data. Such a system is now being developed by Jack Brown, Elec- tronic Technician at the La Jolla Laboratory and Lt. Roger Hewitt, NOAA officer, with the cooperation of the Navy Undersea Center in San Diego. The system performed suc- cessfully in laboratory simulation testing in June and is scheduled to be field tested in late July.\nThe ship's speed and time are recorded with each target and may be used to calculate the area surveyed. It is used in the data collection program to determine when an oceanographic station has been reached and to suspend data recording while on station: start pulses continue to be counted, however, and the time at the beginning and end of the station is there- fore recorded.\nIn shipboard operation, the system requires no attendance. Prior to departure, the computer is started, and the hour counter is pre-set to the current time. The sonar system is then started and may be left in operation 24 hours a day or turned off at night. At the end of the day (1600 hours) the data collection program is replaced by a general compu- tational program. This program change is accomplished auto- matically from a pre-recorded magnetic tape cartridge. The stored target data are now reduced, summarized and dumped into peripheral mass storage capable of holding the entire trip's collection.\nTUNA ASSESSMENT AND DEVELOPMENT INVESTIGATIONS\nSkipjack Tuna Tagged in Central Pacific Recovered in Hawaiian Waters\nA tagged 1812 pound skipjack tuna (aku) was recaptured in Hawaiian waters by the M/V Sunfish on June 21. The fish had been tagged and released by the IATTC on June 5, 1973 at latitude 22000'N, longitude 111º25'W. This brings to eight the total number of returns from the central Pacific of skip- jack tuna released in the eastern Pacific. Seven of these fish were recovered in Hawaii.\nSome Problems Still in Evidence as Third Shipment of Live Bait Reaches Hawaii in Transport Tank\nThe Honolulu Laboratory, continuing in its investigation of ways to provide a more stable supply of tuna baitfish to live- bait fisheries in the central and western Pacific Ocean, brought\n20\nto Honolulu a third trial shipment of California anchovy using the laboratory-designed baitfish transport tank. Roger Green, Leader, Baitfish Project, Donald Aasted, Fishery Methods and Equipment Specialist, and Reginald Gooding, Fishery Biologist, traveled to Long Beach to attempt bait aging and to test a new type of tank bottom vacuum cleaning system prior to shipping the bait. An attempt by\nthe bait dealer to age bait failed, apparently because of an influx of red tide into Long Beach Harbor. The new clean- ing system worked efficiently, but is also cleaning out fish that aren't dead. A small load of 300-350 pounds was returned to Honolulu with Mr. Green accompanying the transport tank aboard the freighter Matsonia. The problem of accurately estimating the amount loaded into the tank is apparently re- sponsible. The fish are netted from the catcher boat. Weight of fish per scoop may range from 2-6 pounds. Further work is planned to refine our original estimates of fish.\nLt. Warren Taguchi, NOAA Corps, La Jolla Laboratory, assisted in the Long Beach operations as training for future involve- ment in the project.\nM/V Neptune Catches Skipjack Tuna with California Anchovy\nAnchovy from the third shipment of baitfish brought from Cali- fornia were given to the Honolulu-based fishing vessel Neptune, which used them in 2 days of fishing. The Neptune returned with catches of 10,000 pounds and 11,000 pounds on those 2 days. Anchovy were used both to chum the fish, after which they were caught with the local bait, nehu, and to do the actual fishing. In every instance the fishermen were com- pletely pleased with their performance.\nFishery Analysis Program Initiates Tests Preliminary to In-Depth Analysis of South Pacific Albacore Fishery\nFishery Biologist Dr. Robert A. Skillman leads the Honolulu Laboratory's Fishery Analysis Program in carrying out the ob- jectives of Tuna Monitoring and Assessment of the Pacific and Indian Oceans, with major emphasis on stock assessment, fishery monitoring, and fishery liaison aspects of SWFC's skipjack tuna development plan. Also, the status of exploited stocks of other tuna and tunalike resources are monitored through the systematic collection and analysis of fisheries data.\nWith present priority being given to a study of the South Pacific albacore, Dr. Skillman, with the assistance of Mathe- matician Ms. Marian Y.Y. Yong, has initiated a sensitivity test of the generalized production model developed recently\n21\nfor the South Pacific albacore stock. Following this he will undertake an in-depth analysis of the fishery. The sensitivity test of the production model will involve an investigation of the effects of a range of total catch and catch per unit effort estimates on the maximum sustainable average yield (MSAY) . Initially, total catch of albacore in the South Pacific was estimated using the catch data for the fishery based in American Samoa, the non-Samoan catches for Japan from the \"Annual Report of Effort and Catch Statistics by Area on Japanese Tuna Longline Fishery,\" and the non-Samoan catches for Korea and Taiwan from the Asian Tuna Conference Proceed- ings. The latter catch estimates are apparently preliminary, and there were problems pertaining to the breakdown of the statistics by species and to whether the \"Pacific Ocean\" category referred to the entire Pacific or not. Hence, the accuracy of these estimates was investigated by re-estimating catches based on the number of Korean and Taiwanese vessels reported to be fishing at foreign bases in the South Pacific, correction factors for non-reporting vessels, and catch rates of Korean and Taiwanese vessels based in American Samoa. The greatest difference in estimates using these procedures was 10.4%, while the average yearly difference was 4.1%. Dr. Skillman has concluded that the estimation of total catch is not a serious problem in assessing the state of the albacore stock. He has fitted a new generalized production model to the new catch estimates of MSAY, but they do not differ sig-\nnificantly from the earlier estimates. Also, he has incor- porated corrections for hypothetical 10% overestimates, and 10%, 25%, and 50% underestimates of total catch into the generalized production model, but has not yet got the computer program to converge to estimates of MSAY for all sets of data. Following the solution of this computational problem, he and Ms. Yong will investigate the effect of errors in estimating catch per unit effort statistics on the estimate of MSAY from the model.\nContinuing the assessment of skipjack tuna resources, Dr. Skillman and Ms. Yong have finished the initial processing of length-frequency data on Hawaiian skipjack tuna in order to separate size-classes by sex, month, and year. Skipjack tuna size-classes (or age-groups) are being sought in order to estimate mortality rates and von Bertalanffy growth parameters on a cohort basis. Initial processing of the data has been completed, but the results have not been assessed for validity of size-class separation or appropriateness of dividing the data into sex, month, and year categories.\n22\nMr. Richard N. Uchida, Fishery Biologist in the Fishery Analysis Program, participated in the Tuna Baitfish Work- shop held at the Honolulu Laboratory and acted as rapporteur for the session on Baitfish Transport, Holding, and Sub- stitutes. He met with Dr. Robert Kearney, Department of Agriculture, Stock and Fisheries, Konedobu, Papua New Guinea, and Dr. Skillman twice in early June to discuss the design and format for the South Pacific Commission's Daily Tuna Catch Record and the Tuna Length-Weight-Sex Data sheets. approval by the Laboratory Director, 500 copies of the log sheets were printed for distribution at the 7th Technical Fisheries Meeting scheduled to be held in Tonga in mid-July. Mr. Uchida continued work on a paper reviewing the develop- ment or potential development of skipjack tuna fisheries in the southwest Pacific and Indian Oceans. This review is being prepared for a meeting of the IOFC/IPFC tuna working party at the request of the Director, Honolulu Laboratory, for John Gulland, FAO.\nUpon\nAs part of the continuing assessment of other tuna and tuna- like resources, all statistical testing and reworking of re- sults for the manuscript, \"Von Bertalanffy growth curves for striped marlin, Tetrapturus audax, and blue marlin, Makaira nigricans, in the central North Pacific\" by Robert A. Skillman and Marian Y. Y. Yong have been completed following reviews by Mr. Uchida and Fishery Biologist Dr. Jerry A. Wetherall at the Honolulu Laboratory.\n* *\nDuring June, Dr. Jerry Wetherall participated in the Tuna Baitfish Workshop, presenting a brief paper summarizing his analysis of catch and effort statistics for the nehu fishery in Kaneohe Bay. Together with Dr. Skillman, Dr. Wetherall completed a brief covariance analysis of skipjack tuna morpho- metrics, with data compiled during the days of the Pacific Oceanic Fishery Investigations. They concluded that further morphometric studies on skipjack tuna in the central and western Pacific would not be worthwhile.\nDr. Wetherall is now developing plans for a comprehensive study of the population dynamics of North Pacific albacore.\nGrowth Rates of Tunas and Other Fishes Suggested by Study of Otoliths\nFishery Biologist Dr. Paul Struhsaker at the Honolulu Lab- oratory reported that Mr. James Uchiyama, Research Assistant\n23\nthere with the Fishery Analysis Program, has been working on the first draft of a manuscript dealing with early growth rates of skipjack and yellowfin tunas from the central Pacific as indicated by presumed daily growth layers in sagittae. He has also been examining skipjack tuna otoliths from the Papua New Guinea region to compare the growth rate of the geographical population from that area with the one from the central Pacific. The Papua New Guinea material was provided by Dr. Robert Kearney. Ms. Patricia Seidl has been verifying initial and second read- ings of nehu, Stolephorus purpureus, otoliths. She has also been preparing otoliths from tunas and other fishes collected during R/V David Starr Jordan Cruise 80 to the Hawaiian Islands.\n* *\nDuring June Dr. Paul Struhsaker worked on the first draft of a manuscript dealing with age and growth of the nehu.\nA translation of a Japanese report on the status of the Japanese longline fishery was completed by Fishery Biologist Tamio Otsu at Honolulu. This translated article gives a vivid summary of the changing position of the tuna longline fishery in Japan, where the effort has shifted from fish for export (albacore, yellowfin) to fish for the domestic fresh fish market (bluefin tuna, bigeye tuna). Another translation now being edited describes Japan's skipjack tuna fishery develop- ment activities in foreign areas.\nLarge Fish, Small Catches Characterize Season in Hawaii's Skipjack Tuna Fishery\nThe skipjack tuna season in the Hawaiian fishery has been slow through June, when the catch was estimated at 486 metric tons. This was 435 metric tons below the catch in June 1973 and 289 metric tons less than the long-term June average (1948-73) . The catch for the first 6 months of 1974 was estimated at 1,549 metric tons, 301 metric tons below last year's catch for the same period and 301 metric tons below the average in 1948-73. The large fish this summer are unusually large, many weighing in excess of 14 kg.\n*\nGovernment of American Samoa employee Henry Sesepasara recorded the lengths of 2,173 albacore from 46 vessels at Samoa during the period May 25 to June 21, according to Research Assistant Ray Sumida. Sesepasara collected 39 sets\n24\nof catch and effort data and, utilizing data from 10 vessels, determined an average size of 79.3 cm and an albacore catch per 100 hooks of 3.81. The small size of the albacore is attributed to the vessels fishing between latitude 30° and 40°S.\nTUNA BAITFISH WORKSHOP HELD AT SWFC HONOLULU LABORATORY\nAn invitational tuna baitfish workshop co-sponsored by the National Marine Fisheries Service and the University of Hawaii Sea Grant Program, was held at the NMFS Honolulu Laboratory June 4-6. A major purpose of the workshop was to bring together all information gathered thus far on baitfish, with emphasis on tuna baitfish of the central and western Pacific, and to explore some of the basic questions needing clarification in the face of the proposed development and expansion of skipjack tuna live-bait fisheries in these areas of the Pacific.\nThirty-seven participants from the mainland United States, Hawaii, Japan, and islands of the western Pacific met first in general session, where they considered the essentials of a suitable baitfish for skipjack tuna pole-and-line fishing. These criteria were organized as \"fisherman-related\" and \"tuna-related,\" and the final product of the session, chaired by Honolulu Laboratory Director Richard S. Shomura, was a comparison to one another of the more important baitfishes presently in use in various parts of the Pacific.\nWorkshop sessions dealt with natural stocks; cultured species; and baitfish transport, holding, and substitutes, with a dis- cussion of the economics of each method of providing the bait necessary to a particular fishery.\nThe session on natural stocks was conducted by Dr. R. E. Kearney, Principal Biologist with the Department of Agriculture, Stock and Fisheries, Konedobu, Papua New Guinea. This group identi- fied the principal natural baitfish resources of the Pacific as falling into three categories: the large stocks of Engraulis found in the eastern and extreme western Pacific -- as off the mainland United States west coast and off Japan -- adequate for local fisheries and in addition available for transport; smaller stocks of other baitfishes, mainly Stolephorus, cur- rently supporting modest stable or growing local skipjack tuna fisheries (included here is the Hawaii fishery, where nehu, S. purpureus, is the principal baitfish); and stocks known to be poor or not well enough known to be evaluated accurately. The group recommended improved bait handling and holding tech- niques, and intensified acquisition and exchange of information on naturally occurring stocks.\n25\nThe session on cultured baitfish species, under the leader- ship of Mr. Shomura, aimed at providing guidelines for sub - sequent actions in the development of baitfish culture. The complexity of the subject was noted, and long- and short-range proposed approaches were aired. The group prepared a chart outlining the principal factors to be considered in the culture of known tuna baitfish.\nHonolulu Laboratory Fishery Biologist Tamio Otsu opened the session on baitfish transport, holding, and substitutes, stressing the need to establish direction and guidelines for ongoing baitfish transport studies presently being conducted by the NMFS Honolulu Laboratory. A baitfish transport tank has been developed from a surplus 5,000-gallon aircraft refuel- ing tank, and two trial shipments of California anchovy brought to Hawaii for use as baitfish. Discussion of problems of the experimental bait transport system centered on heavy mortalities experienced and on the importance of aging the bait before shipping. The group approved of HL's approach to bait transport, and recommended a third trial shipment in the existing tank before undertaking an evaluation of tank design. Cost factors clearly affect the design and construction of a tank of \"ideal\" configuration.\nIn the final general session, participants established an order of priority for further studies: for Hawaii, the anchovy trans- port system; for American Samoa, the culturing and sea trials of mollies, initiation of Apogon studies by the Trust Territory of the Pacific Islands; and for other areas, the development of cultured baitfish and natural stocks.\nThe 35 contributed working papers constitute a valuable collec- tion of current baitfish knowledge, and proceedings and selected working papers of the workshop will be published.\nDR. REUBEN LASKER RELINQUISHES EDITORSHIP OF NMFS PUBLICATIONS\nAfter 4 years as Scientific Editor of NMFS publications, Dr. Reuben Lasker, Physiologist and Leader of the Stock and Re- cruitment Investigations at the La Jolla Laboratory, will turn the editor's job over to Dr. Bruce Collette of the NMFS Sys- tematics Laboratory in Washington, D.C. on July 1, 1974.\nDr. Lasker's tenure as editor has been marked with many achieve- ments but he has been particularly instrumental in bringing new lustre to the 80-year old scientific publication, Fishery Bulletin. Before 1971, the Fishery Bulletin appeared irregularly. In the years 1968-70, the average number of pages printed per year was 391. In the first year of Dr. Lasker's editorship, the Fishery Bulletin became a quarterly. In the years 1971-73, the average number of pages printed per year almost tripled, reaching 1,119.\n26\nThe success of the Fishery Bulletin is reflected by its cir- culation. First put on sale in January 1972, the Fishery Bulletin within less than a year was selling more than 1,000 copies and the list is growing despite increased subscrip- tion costs. It has proven itself an indispensable research journal to those in the field of fisheries. With the free circulation, which has been held to a minimum, added to the paid, the Fishery Bulletin now reaches almost as many readers as the Journal of the Fisheries Research Board of Canada and the Transactions of the American Fisheries Society, both out- standing publications in the field.\nAs editor, Dr. Lasker was also instrumental in initiating a rigorous peer review system for refereeing manuscripts, thus helping bring the scientific content of NMFS's published work to a high level.\nWhile working as editor half-time, Dr. Lasker continued his researches on fish physiology.\nAUTOMATIC DATA PROCESSING SCIENTIFIC ADVISORY COMMITTEE ESTABLISHED AT SWFC\nAn ADP Scientific Advisory Committee has been established at the Center this month to advise, assist and review the Center's ADP tasks. Dr. W. Fox was elected chairman of the group and Mr. Ralph Bates, Systems Analyst, was appointed the Executive Secretary; other members of the committee are L. Eber, D. Mackett, and P. Smith.\nPUBLIC AFFAIRS\nDuring the week of June 17 the Honolulu Laboratory responded to two requests for assistance. Research Assistants Paul Shiota and Ray Sumida collected and shipped 120 skipjack tuna eyes to Dr. Gerard Armand of the Boston Institute of Bio-Medical Research in Boston, and sent four skipjack tuna to Dr. Peter Lerke, Head of the Seafood Research, University of California, Berkeley. The fish were to be used to study the process of spoilage, and they were shipped without any ice, as instructed.\n27\nJune 27 - A public meeting on 1974-75 herring regulations was held by the California Department of Fish and Game in the meeting room of the Tiburon Laboratory. About 35 persons representing commercial and sportfishing interests as well as the press attended and made comments on proposed laws for the commercial herring fisheries of San Francisco and Tomales Bays.\nSEMINARS\nHonolulu Laboratory\nJune 7 Mr. David Mackett, Planning Officer, SWFC, - gave a seminar to the staff on \"Network Techniques.\"\n10 Fishery Biologists Walter Matsumoto and Robert - Skillman presented to the staff \"dry runs\" of the talks they would give at the Hawaiian Invitational Allison Tuna Tournament (HIATT) .\n16 Mr. Matsumoto, Dr. Skillman, and Mr. Heeny Yuen presented a 2-hour seminar on the biology of yellowfin tuna to interested participants of the HIATT.\n28 Dr. James Kitche11, Laboratory of Limnology, University of Wisconsin gave a seminar to the research staff on some speculations about the ecology of skipjack tuna arrived via bio- energetics consideration. Cooperating investi- gator Dr. Kitchell spent the month of June at SWFC Honolulu Laboratory to conclude work on a first-cut model of bioenergetics of skipjack tuna. While in Honolulu he prepared the first draft of a manuscript describing this energy budget.\nTiburon Laboratory\nA seminar series has been initiated at Tiburon Laboratory beginning in July. The scientific staff will present seminars on work accomplished or in progress. Outside speakers will also be invited. The first four speakers and their topics are:\n28\nJuly 8 - Norman Abramson - The Yield per Recruit Model in Non-Technical Terms\nJuly 19 Rich Faris - An Introduction to the Lawrence- Berkeley Computer System\nJuly 26 Susan Smith - Marine Recreational Fishing - San Francisco Bay Area\nAugust 2\nJeannette Struhsaker - Applications of Factor Analysis\nLa Jolla Laboratory\nJune 13 Dr. J. Michael Colebrook, Institute for Marine Environmental Research, Plymouth, England, discussed \"The Continuous Plankton Survey.\" (Dr. Colebrook is presently a visiting scientist at the La Jolla Laboratory for 6 months, working with Dr. Paul Smith on time series of CalCOFI data.)\nMEETINGS AND TRAVEL\nJune 1-7 Fishery Biologists Andrew Dizon and Heeny Yuen, and Biological Aid Elliott Kawahara of the Honolulu Laboratory spent the week on board the M/V Kamalii Kai. The purpose of this travel was to collect data on the movement of yellow- fin tuna off the leeward coast of Oahu by acoustic tracking techniques.\n2 - 4 Dr. Brian Rothschild, Center Director, traveled to Seattle, Washington to attend the Western Center Director's Meeting.\n3- 4 Dr. R.H. Baird, Fisheries Adviser, South Pacific - Commission, visited the Honolulu Laboratory en route to and from meetings in New York, and met several times with Director R.S. Shomura, particularly to discuss the tuna baitfish workshop.\n3-7 Ms. Doris Robinson, Seafood Consumer Specialist, - Southwest Region, Terminal Island, spent the week in Honolulu to develop a fisheries educa- tion program in cooperation with Sea Grant and the Food and Nutrition Sciences Department, University of Hawaii.\n29\nJune 3-20 Messrs. R. McNeely, D. Twohig, J. Jurkovich, and A. Barcott, Northwest Fisheries Center to work in San Diego on modification of the NMFS experimental large-volume purse seine.\n4 - 6 Thirty-seven participants attended the Tuna Baitfish Workshop held at the SWFC Honolulu Laboratory (see preceding section) .\n4 - 7 Dr. Paul Smith, Leader of the Survey Systems Analysis Investigation at the La Jolla Lab- oratory, attended conferences in Chicago. He delivered a paper entitled, \"CalCOFI, the first 25 years,\" to attendees at the Inter- national Water Resources Symposium.\n18-21 In Miami, Dr. Smith participated in a review of the environmental impact statement in re- lation to oil drilling in the northeastern Gulf of Alaska, and other parts of the outer continental shelf.\n11 The CalCOFI Committee met at the Southwest Fisheries Center. The Committee is now com- posed of Mr. Joseph Reid of the Scripps Institution of Oceanography, who replaced Professor John Isaacs; Mr. John Radovich of the California Department of Fish and Game, who replaced Mr. Herb Frey, and Dr. Brian Rothschild of NMFS. A feature of this meeting was a symposium on methods of stock assessment. Dr. E. Ahlstrom discussed egg and larval surveys and Dr. Gary Stauffer talked about effort statistics.\n11-12 Dr. Vance McClure, Chemist at the Tiburon Laboratory, attended an Inshore Ecology Workshop in Seattle, Washington.\nThe purpose of the workshop was to provide an opportunity for NMFS researchers in the field of estuarine and ocean pollution to interact and to coordinate their efforts. Overviews of work at the various laboratories were presented which included surveys of aquatic population and toxicity and distri- bution studies of oil, pesticides and heavy metals. A discussion of the role of the re- search laboratories in the evaluation of environmental impact statements concluded the meeting.\n30\nJune 17-20 Dr. William H. Neill, of the Honolulu Lab- oratory, attended AIBS meetings in Tempe, Arizona where he presented a paper \"Behavioral regulation of environment by pelagic marine fishes\" at the symposium on Distributional Ecology of Aquatic Organisms.\n18 Ms. Eleanor Shannon, NOAA Federal Women's and Special Program Coordinator, and John G. Norris, Pacific Region Headquarters Personnel Officer, NWS, met with Director R. Shomura of the Honolulu Laboratory and discussed special programs such as EEO and the Federal Women's Program. Later in the morning, Ms. Shannon, accompanied by Mr. Norris, spoke to all the women employees of the Honolulu Laboratory.\n18 SWFC Director Brian Rothschild presented a general overview of recreational fisheries research at the Center at a meeting sponsored by the California Department of Fish and Game in Long Beach, California and attended by representatives of southern California sportfishing interests (Ocean Fish Protective Association, Southern Council of Conservation Clubs, Sportfishermen's Association of California, Southern California Sports Council and the Greater Los Angeles Council of Diving Clubs) . Mr. G. V. Howard, Director of the Southwest Region, discussed Regional/State aspects of marine research and management projects related to sportfishing.\n19 Mr. Ralph Bates, Systems Analyst at the La Jolla Laboratory, attended a meeting of the Government Automatic Data Processing Council of Southern California, held in San Clemente.\n19 Mr. Shomura attended a meeting of the Natural Area Reserves System Commission called by John Maciolek, Acting Chairman of the Commission.\n19-20\nSWFC Executive Officer Ben Remington traveled to the Tiburon Laboratory to become familiar with the physical facility, review financial control, and discuss the Tiburon site lease arrangements with the Consumer Products Safety Commission.\n31\nJune 19-21 Representing the SWFC, Mr. Izadore Barrett, Deputy Director, traveled to Mexico City during a meeting of CalCOFI scientists with counterpart Mexican National Fisheries Institute (INP) researchers to plan cooperative CalCOFI and other fisheries research.\n24- 27 Mr. David Mackett, Planning Officer for the SWFC, traveled to Washington, D.C. to attend a statistics meeting on policy with respect to State/Federal responsibility.\n24-28\n- Center Director Brian Rothschild attended the Regional and Center Director's meeting in Washington, D.C.\n24-28 Drs. Reuben Lasker and Michael Laurs attended the American Society of Limnology and Ocean- ography meeting held in Seattle. Dr. Lasker presented a paper entitled, \"A link between food chain studies and fisheries research: a larval fish bioassy,\" and Dr. Laurs dis- cussed a paper written with Mr. F. Miller of the IATTC, \"The El Nino of 1972-73 in the eastern tropical Pacific.\"\n24- 28\nAs part of the State/Federal research pro- grams, Messrs. Izadore Barrett and James Squire of the La Jolla Laboratory visited fisheries and tourist officials in southern Baja California to ascertain the data base available for the marine recreational fisheries catch in that region.\n27 A Baitfish Committee meeting was held at the Honolulu Laboratory to review the results of the third shipment of northern anchovy from California to Hawaii and to discuss future plans.\n28 Mr. R. Shomura, Honolulu Laboratory Director, was among those invited to witness the first harvest operation of the Malaysian prawns at Fishfarms Hawaii in Laie, Oahu.\n32\nVISITORS\nHonolulu Laboratory\nJune 3 Scientists from the research vessel Hakuho Maru of the Ocean Research Institute, Uni- versity of Tokyo, visited the Honolulu Laboratory.\nTiburon Laboratory\nJune 6\n- John Baxter, Department of Fish & Game, Menlo Park.\nHerbert Frey, Department of Fish & Game, Long Beach.\n12\nTom Jow, Department of Fish & Game, Menlo Park William Ver Brugge, San Francisco Tyee Club\n- Phillip Wesendunk, San Francisco Tyee Club\n- Bruce Wyatt, U.C. Davis Sea Grant\n19-20 - John Geibel, Department of Fish & Game, Menlo Park\nBen Remington, SWFC and Graham Mathes, NASO, Seattle, Washington\nLa Jolla Laboratory\nJune 4 Mr. Francis O'Meara, Deputy Director for Programs, NOAA\n4 - 5\n- Dr. Grant Beardsley, Southwest Fisheries Center, Miami\n6 Mr. George Reese, Fisheries Attache, Mexico -\n10 Dr. Jeffrey B. Graham, Smithsonian Tropical - Research Institute, Panama\n13-14 - Dr. Fred P. Thurberg, NMFS Laboratory, Milford, Connecticut\n20 Mr. Bob Holzinger, CF&G, Long Beach\n33\nJune 21 Mr. Gordon D. Shadoan, NOAA, NASO, Seattle\n21- 24 - Messrs. Daniel Meyers, George Havenner, Dan Welley, Department of Commerce, Washington, D.C.\nPERSONNEL ACTIONS\nJune 4 Armstrong, Gordon, Biological Aid, - La Jolla Extension of Appointment\nAmick, Roy, Biological Aid, - La Jolla\nExtension of Appointment\nForeman, Terry, Biological Aid, - La Jolla Extension of Appointment\nThompson, John, Biological Aid,\n- La Jolla Extension of Appointment\nOrr, Henry, Office Draftsman, - La Jolla Extension of Appointment\n11 Ebisuzaki, Ms. Iris E. ,Clerk- Typist, Termination of Temporary Appointment\n- Honolulu\n17 Almazon, Peter, Summer Aid, - La Jolla Temporary Appointment\nWeiss, Cheryal, Summer Aid, Temporary Appointment\n- La Jolla\nSmith, Rose, Summer Aid, - La Jolla Temporary Appointment\n18 Foreman, Terry, Biological Aid, Termination\n- La Jolla\nHundt, Robert, Biological Aid, Termination\n- La Jolla\n20\n- Thompson, John, Biological Aid, Termination - La Jolla\n23 Bliss, Kenneth, Oceanographer,\n- La Jolla Promotion\n34\nJune 23 - Holzapfel, Eugene, Biological - La Jolla Technician, Promotion\nEngstrand, Barbara, Administra- - La Jolla tive Clerk, Promotion\nHuppert, Daniel, Industry - La Jolla Economist, Entered on Duty\nWoods, Maureen H. , Librarian, - Tiburon Conversion to Career-Conditional Part-Time Appointment\n28 Burke, Eugene, Janitor, Conver- - Tiburon sion to Career-Conditional Appointment\nFlerx, William, Biological Aid, - La Jolla Extension of Temporary Appointment\nReilly, Stephen, Biological Aid, - La Jolla Termination\nHONORS AND AWARDS\nDr. Elbert H. Ahlstrom, Senior Scientist at the La Jolla Lab- oratory, who entered Federal service as a fishery biologist with the sardine investigation in Stanford, California in 1939, received a personal letter of congratulations from NMFS Director Schoning, on completion of 35 years of government service. Mr. Schoning noted Dr. Ahlstrom's major scientific contribu- tions to fishery biology, his work as an Adjunct Professor of Oceanography at the Scripps Institution of Oceanography, and his recent receipt of the Department of Commerce Gold Medal.\nLt. Roger Hewitt, NOAA Officer at the La Jolla Laboratory, has been notified by the California Board of Registration for Pro- fessional Engineers that he has been awarded a certificate of registration to practice civil engineering in the State of California. The statement of proficiency is based on previous work, references, and an examination taken by Lt. Hewitt in February 1974.\n35\nMay 12 Ms. Sally H. Kuba, Computer Technician at the Honolulu Laboratory - Quality Increase\nMs. Susan C. Smith, Tiburon Laboratory - Quality Increase\nJune 9\nDr. Jeannette W. Struhsaker, Tiburon Laboratory - Quality Increase\nTRAINING\nJune 17-19 Drs. Robert A. Skillman and Jerry A. Wetherall, - Honolulu Laboratory, attended a 3-day Manage- ment by Objectives (MBO) training course in Honolulu. At the management workshop the Honolulu Laboratory's insular fishery develop- ment program for the northwestern Hawaiian Islands (Leeward Islands) was examined as a class exercise to demonstrate the MBO process.\n25-27 - Barbara Engstrand and Nancy Wiley of the La Jolla Laboratory attended the Career Women's Seminar held in San Diego and sponsored by the U.S. Civil Service Commission.\nB BICE\n1776\n1976\n36",
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                    "content": "Honolulu",
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                    "content": "*",
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                    "content": "UNITED",
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                    "content": "ED STATES OF AN",
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                    "content": "HONOLULU",
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                    "content": "LA JOLLA",
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                    "content": "TIBURON",
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                    "content": "SOUTHWEST FISHERIES CENTER",
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                    "content": "MONTHLY REPORT-JUNE 1974",
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                    "content": "Page",
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                {
                    "content": ".",
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                    "content": "1",
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                {
                    "content": ". New Information on Albacore Migration Gathered on",
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                    "content": "Jordan Cruise",
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                    "content": "1",
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                {
                    "content": ". Silver Salmon Inoculated and Tagged in Preparation",
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                {
                    "content": "for Transfer to Pens at Tiburon .",
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                    "content": "3",
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                    "content": ". Tiburon Laboratory Program Aids in Fishery",
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                    "content": "Development",
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                    "content": "4",
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                    "content": ". Energy Budget Constructed for Skipjack Tuna",
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                    "content": "7",
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                    "content": ". NMFS-Designed Large-Volume Purse Seine Net Modified",
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                    "content": "for Improved Fish Handling",
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                    "content": "LA JOLLA LABORATORY",
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                    "content": "TIBURON LABORATORY",
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                    "content": "MONTHLY REPORT-JUNE 1974",
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                    "content": "STATUS OF PUBLICATIONS",
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                    "content": "Published",
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                    "content": "Hester, Frank J. 1974. Some considerations of the problems",
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                {
                    "content": "associated with the use of live bait for catching tunas",
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                    "content": "in the tropical Pacific Ocean.",
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                    "content": "Mar. Fish. Rev.",
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                    "content": "35(5): 1-12.",
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                    "content": "(MFR Paper 1060.)",
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                    "content": "This report provides a summary of the tropical Pacific",
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                    "content": "tuna live-bait fishing methods, identifies the major",
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                    "content": "problems restricting the expansion of live-bait fisheries",
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                    "content": "in the Pacific, and gives references and suggestions on",
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                    "content": "methodology to investigators interested in working on",
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                    "content": "baitfish problems.",
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                    "content": "Neill, William H. , and E. Don Stevens.",
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                    "content": "1974. Thermal inertia",
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                            "offset": 1622,
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                {
                    "content": "versus thermoregulation in \"warm\" turtles and tunas. Science",
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                {
                    "content": "(Wash., D.C.) 184(4140): 1008-1010.",
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                    "content": "(No abstract.)",
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                {
                    "content": "ALBACORE FISHERIES INVESTIGATIONS",
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                    "content": "New Information on Albacore Migration Gathered on",
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                    "content": "Jordan Cruise",
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                    "content": "The NOAA research vessel, David Starr Jordan, returned July 1",
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                    "content": "from a 33-day albacore-oceanography survey conducted in",
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                    "content": "This report does not constitute publication and is for information only.",
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                    "content": "conduct fish scouting and tagging operations. The Jordan con-",
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                    "content": "ducted oceanographic stations and trolled for albacore. Daily",
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                    "content": "radio contact was maintained ship-to-ship and ship-to-shore.",
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                    "content": "Central water interspersed with Subarctic water. Many minor",
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                    "content": "fronts were found. In apparent response to these mixed con-",
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                    "content": "ditions the albacore tunas, as shown by the catches, were",
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                    "content": "widely scattered over a large region. Catches were made from",
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                    "content": "130°W-143ºW in early June as the vessels moved out through the",
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                    "content": "intended survey region.",
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                    "content": "sporadically, no productive centers of fishing developed.",
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                    "content": "During the 1972 and 1973 surveys productive fishing centers",
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                    "content": "that lasted 2-3 weeks developed along major frontal regions",
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                    "content": "to the west of 136°W. Despite the increased effort provided",
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                    "content": "by the large number of independent vessels during this year,",
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                    "content": "the albacore vessels found that good catches could not be",
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                    "content": "After the second week in June the vessels moved inshore of",
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                    "content": "134°W where two major centers of fishing developed:",
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                    "content": "35°30'N, 132ºW and 34ºN, 126ºW. The Jordan worked about the",
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                    "content": "northwesterly center and found the catches associated with",
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                    "content": "water, protruding eastward.",
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                    "content": "The trolling effort by the Jordan provided valuable information.",
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                    "content": "Repeated crossings of fronts frequently revealed albacore to",
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                    "content": "be concentrated on one side and/or very near the front (i.e.,",
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                    "content": "near the surface temperature and salinity break). Scientists",
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                    "content": "on the Jordan were able to bring the fleet onto productive",
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                    "content": "fishing areas in three instances.",
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                    "content": "In all, the cooperation",
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                    "content": "between the research charter vessels, the independent fishing",
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                    "content": "study again centered on the fish that will appear in the Cali-",
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                    "content": "COASTAL FISH COMMUNITIES INVESTIGATIONS",
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                    "content": "trout products. It has been shown previously that the",
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                    "content": "Technology Laboratory in Seattle through Dr. John Spinelli.",
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                    "content": "two new firms will concentrate their efforts in supplying",
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                    "content": "rather than processing sea urchins.",
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                    "content": "two small diving boats.",
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                    "content": "It was learned recently that one sea urchin processing firm",
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                    "content": "had gross sales of about $300,000 last year. Gross sales",
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                    "content": "million dollars. Starting next month we will employ a part-",
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                    "content": "time worker to sample the fishery and obtain more precise",
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                    "content": "data on economics and on the sea urchins.",
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                    "content": "Angler's Guide to the United States Pacific Coast in",
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                    "content": "Preparation",
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                    "content": "Work continued at the Tiburon Laboratory on the Pacific",
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                    "content": "Angler's Guide being prepared by Fishery Biologist Jim Squire",
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                    "content": "of the La Jolla Laboratory and Publications Specialist Susan",
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                    "content": "Smith of the Tiburon Laboratory. The book describes marine",
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                    "content": "sport fishes, fishing grounds, and angler facilities along",
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                    "content": "the west coast from California to Alaska, and also includes",
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                    "content": "Hawaii, American Samoa, and Guam.",
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                    "content": "This month the sections covering southern California, Oregon,",
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                    "content": "and Washington were sent to outside reviewers and work began",
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                    "content": "on the final drawings of the tropical Pacific fishes. The",
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                    "content": "option of publishing the Guide as a special issue of Marine",
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                    "content": "investigated with Mr. John Smiles, Chief of NOAA Visual",
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                    "content": "Services Branch in Rockville, whose staff is preparing the",
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                    "content": "charts for the Guide. Because reduction of the charts would",
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                    "content": "be necessary to fit MFR's format, resulting in considerable",
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                    "content": "loss of chart quality and readibility, the idea was abandoned;",
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                    "content": "5",
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                    "content": "Simulation Model for Tuna Distribution:",
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                    "content": "with a simple set of capabilities and responses, all well recog-",
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                    "content": "by Drs. J. F. Kitchell and J.J. Magnuson of the University of",
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                    "content": "Wisconsin and Dr. W.H. Neill of the Honolulu Laboratory.",
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                    "content": "activity. Skipjack between 12 and 15 kg are affected by one",
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                    "content": "limiting factor or the other, although less markedly. (Limits",
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                    "content": "to fishes' energy intake, and, thus, growth are commonly",
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                    "content": "environmental but rarely are dictated by organismal properties",
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                    "content": "such as here suggested to be the case with skipjack tuna. )",
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                    "content": "Interestingly, the asymptotic length of skipjack tuna, calcu-",
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                    "content": "lated from the von Bertalanffy growth model, varies from 82.3-",
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                    "content": "85.0 cm, depending on data source and treatment. Applying",
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                    "content": "Magnuson's (1973) length-weight relationship, these maximum",
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                    "content": "lengths correspond to maximum weights of 12.1-14.9 kg.",
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                {
                    "content": "Caloric Values Determined for Skipjack Tuna",
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                    "content": "Prerequisite to serious consideration of fish-energetics prob-",
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                    "content": "lems is accurate estimation of tissue caloric yields for the",
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                },
                {
                    "content": "subject species. To complement construction of an energy",
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                },
                {
                    "content": "budget for skipjack tuna, Dr. J.F. Kitchell and J.J. Magnuson",
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                {
                    "content": "of the University of Wisconsin and Dr. W.H. Neill of the Hono-",
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                    "content": "lulu Laboratory have completed a caloric analysis of whole",
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                    "content": "body, red muscle, and white muscle of just-caught and 10-day",
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                {
                    "content": "starved skipjack tuna.",
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                    "content": "Results suggest that neither of the following popular rules-",
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                    "content": "yield, but also hydrate.",
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                    "content": "bioenergetics applications.",
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                    "content": "Productivity of the seas in terms of tuna-flesh must depend",
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                    "content": "R. K. C. Chang and B.M. Ito, under supervision of Dr. W.H.",
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                    "content": "Pacific, where it will be used during regular commercial",
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                    "content": "fishing operations, in a full trial of both its porpoise",
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                    "content": "mortality-reducing and tuna fishing capabilities. Mr. Jerry",
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                    "content": "porpoise mortalities.",
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                    "content": "Efforts Continue to Complete Analysis of Porpoise",
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                    "content": "Population Data",
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                    "content": "Additional resources of manpower at the La Jolla Laboratory",
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                    "content": "have been mobilized to complete the task of analyzing the",
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                    "content": "of porpoises for incorporation in a report due in October",
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                    "content": "1974 on the impact of the tuna purse seine fishery on the",
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                    "content": "porpoise populations of the eastern tropical Pacific. To",
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                    "content": "this end, Dr. Gary Sakagawa of the Stock Assessment and",
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                    "content": "additional",
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                    "content": "short-term and temporary personnel have been",
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                    "content": "added to the staff to assist in computer programming.",
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                    "content": "A",
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                    "content": "contract has been given to Science Applications, Inc., of",
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                    "content": "the tuna fleet for possible trends. Dr. Tim Smith, Fishery",
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                    "content": "One of the objectives of the Physiology Investigations at the",
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                    "content": "work for approaching an actual field situation.",
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                    "content": "ing of these samples with the developed GC techniques is yield-",
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                    "content": "ing data on the actual components of the petroleum products",
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                    "content": "used and their subsequent fate in the marine environment.",
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                    "content": "Cooperative Striped Bass Kill Program Begins",
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                    "content": "lower low tide.",
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                    "content": "ful enough to produce a fish kill. A noticeable dissolved",
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                    "content": "never went lower than 6 ppm concentration. A simple in-situ",
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                    "content": "bioassy study, located in the area of known fish kills,",
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                    "content": "is currently underway involving juvenile and adult striped",
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                    "content": "bass.",
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                    "content": "STOCK ASSESSMENT AND FISHERY EVALUATION INVESTIGATIONS",
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                    "content": "Progress in State/Federal Coastal Fisheries Program",
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                    "content": "Agriculture Organization, Rome, arrived on June 2 at the",
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                    "content": "La Jolla Laboratory to assist Alec MacCall, Fishery Biologist",
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                    "content": "Stauffer, Fishery Biologist at the La Jolla Laboratory,",
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                    "content": "California fish stock as part of the cooperative CF&G/",
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                    "content": "SWFC marine recreational fisheries study. With his aid",
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                    "content": "and guidance, reports were prepared on the status of six",
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                    "content": "sardine (Sardinops caerulea), Pacific mackerel (Scomber",
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                    "content": "seabass (Cynoscion nobilis), and Pacific bonito (Sarda",
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                {
                    "content": "chiliensis) .",
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                    "content": "The State/Federal Steering Committee for the cooperative",
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                    "content": "CF&G/NMFS research contract met June 12 at the Southwest",
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                    "content": "Fisheries Center and reviewed the progress of Messrs. MacCall",
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                    "content": "and Stauffer's work to the present, and their short-term",
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                    "content": "goals. Formal preparations to continue the contract into",
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                    "content": "FY 1975 were initiated. At this meeting, John Radovich of",
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                    "content": "servation program, impact of uncontrolled growth of the fleet",
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                    "content": "on the conservation program, and the possibility of limited",
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                    "content": "entry of gear.",
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                    "content": "Mr. James Squire, Fishery Biologist at the La Jolla Laboratory,",
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                    "content": "who is in charge of the cooperative marine game fish tagging",
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                    "content": "program, reports that billfishing is excellent along the east",
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                    "content": "coast of the tip of Baja California. In June alone, 260 striped",
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                    "content": "Thus far in 1974, 680 bill-",
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                    "content": "fish have been tagged.",
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                    "content": "in Baja California, June 24-28 to present the annual Thomas",
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                    "content": "and Margaret Gardiner Foundation awards to the Mexican fishing",
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                    "content": "boat captains from whose boats the greatest number of bill-",
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                    "content": "Dr.",
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                    "content": "Ms.",
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                    "content": "velopment of females, but the majority of males continued",
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                    "content": "In view of the anticipated delay in the maturation of females",
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                    "content": "at La Jolla, a consignment of 10,000 eggs of striped bass",
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                    "content": "completion of a study on the comparative survival of larvae",
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                    "content": "in fresh water and through gradual acclimation to seawater.",
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                    "content": "on the next day without any mortality.",
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                    "content": "Dr. John Hunter, Fishery Biologist at the La Jolla Laboratory,",
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                    "content": "the weight of anchovy eggs and the length of larvae at the",
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                    "content": "age of 4 days. Length at age 4 days was dependent upon egg",
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                    "content": "weight and temperature. For example, at 16℃ larvae from",
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                    "content": "the smallest egg would be 4.0 mm whereas larvae from the",
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                    "content": "largest eggs would be 4.5 mm. A difference of 0.5 mm is",
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                    "content": "probably of negligible importance at temperatures above 16ºC",
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                    "content": "because of a fast growth rate but at temperatures below 16℃",
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                    "content": "size at first feeding may be a significant element in survival.",
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                    "content": "This month, Dr. Hunter, assisted by Ms. C. Sanchez, Biological",
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                    "content": "Technician, also established a relationship between anchovy",
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                    "content": "egg volume and egg weight so that existent data could be used",
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                    "content": "on seasonal trends in egg size. An interesting by-product",
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                    "content": "of this analysis, according to Dr. Hunter, was that eggs",
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                    "content": "spawned in response to injection of hormones had larger",
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                    "content": "volumes for their weight than did ones naturally spawned.",
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                    "content": "Neuston Net Samples - A Worthwhile Supplement to Standard",
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                    "content": "CalCOFI Net Hauls",
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                    "content": "A paper is being prepared by Dr. Elbert Ahlstrom, Senior",
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                    "content": "Scientist and Ms. Betsy Stevens, Biological Technician at the",
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                    "confidence": 0.998,
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                    }
                },
                {
                    "content": "would",
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                },
                {
                    "content": "expect",
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                {
                    "content": "to",
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                {
                    "content": "take",
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                    "content": "larvae",
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                    "content": "this",
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                    "content": "fish",
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                },
                {
                    "content": "families.",
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                    "content": "Hence,",
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                {
                    "content": "portion",
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                {
                    "content": "the",
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                {
                    "content": "species",
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                },
                {
                    "content": "are",
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                {
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                },
                {
                    "content": "in",
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                    "confidence": 0.999,
                    "span": {
                        "offset": 37490,
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                    }
                },
                {
                    "content": "neuston",
                    "polygon": [
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                        "offset": 37493,
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                },
                {
                    "content": "16",
                    "polygon": [
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                    "span": {
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                }
            ],
            "lines": [
                {
                    "content": "La Jolla Laboratory for the International Council for the",
                    "polygon": [
                        1.1639,
                        0.6872,
                        6.832,
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                        6.832,
                        0.8888,
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                        0.8384
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                    "spans": [
                        {
                            "offset": 35005,
                            "length": 57
                        }
                    ]
                },
                {
                    "content": "Exploration of the Sea meeting in Copenhagen, this fall, on",
                    "polygon": [
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                        7.0382,
                        0.9209,
                        7.0336,
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                    "spans": [
                        {
                            "offset": 35063,
                            "length": 59
                        }
                    ]
                },
                {
                    "content": "the neuston net hauls on extended CalCOFI Cruise 7205. The",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 35123,
                            "length": 58
                        }
                    ]
                },
                {
                    "content": "neuston net is towed at the surface, with only about half of",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 35182,
                            "length": 60
                        }
                    ]
                },
                {
                    "content": "the net immersed. On this cruise, 115 neuston net hauls were",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 35243,
                            "length": 60
                        }
                    ]
                },
                {
                    "content": "taken on regular CalCOFI stations from off Puget Sound to",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 35304,
                            "length": 57
                        }
                    ]
                },
                {
                    "content": "below Cape San Lucas, Baja California.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 35362,
                            "length": 38
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                    ]
                },
                {
                    "content": "Offshore coverage",
                    "polygon": [
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                    "spans": [
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                            "offset": 35401,
                            "length": 17
                        }
                    ]
                },
                {
                    "content": "was achieved by eight offshore latitudinal lines, run along",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 35419,
                            "length": 59
                        }
                    ]
                },
                {
                    "content": "latitudes 20, 24, 27, 31, 35, 39, 42, and 46ºN, usually ex-",
                    "polygon": [
                        1.1501,
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                        {
                            "offset": 35479,
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                        }
                    ]
                },
                {
                    "content": "tending offshore to 145ºW longitude.",
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                    "spans": [
                        {
                            "offset": 35539,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "On offshore coverage,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 35576,
                            "length": 21
                        }
                    ]
                },
                {
                    "content": "43 neuston hauls were taken.",
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                            "offset": 35598,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "About 80% of the neuston hauls contained fish larvae. The",
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                    "spans": [
                        {
                            "offset": 35627,
                            "length": 57
                        }
                    ]
                },
                {
                    "content": "average number obtained per haul over the CalCOFI grid was",
                    "polygon": [
                        1.1226,
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                    "spans": [
                        {
                            "offset": 35685,
                            "length": 58
                        }
                    ]
                },
                {
                    "content": "60 larvae-juveniles; the average number per haul offshore",
                    "polygon": [
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                        3.0879,
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                            "offset": 35744,
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                        }
                    ]
                },
                {
                    "content": "was 24 larvae-juveniles.",
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                    "spans": [
                        {
                            "offset": 35802,
                            "length": 24
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                    ]
                },
                {
                    "content": "Larvae occurring in largest numbers in the neuston collections",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 35827,
                            "length": 62
                        }
                    ]
                },
                {
                    "content": "were those of the northern anchovy, Engraulis mordax and of",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 35890,
                            "length": 59
                        }
                    ]
                },
                {
                    "content": "the Pacific saury, Cololabis saira. Saury larvae were taken",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 35950,
                            "length": 59
                        }
                    ]
                },
                {
                    "content": "in 75 hauls (1,447 specimens), and eggs in 16 (3,138 eggs) .",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36010,
                            "length": 60
                        }
                    ]
                },
                {
                    "content": "Offshore on the southernmost line (along latitude 20ºN) ,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36071,
                            "length": 57
                        }
                    ]
                },
                {
                    "content": "C. saira was replaced by the dwarf tropical saury, Cololabis",
                    "polygon": [
                        1.1318,
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                        4.4394,
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                    "spans": [
                        {
                            "offset": 36129,
                            "length": 60
                        }
                    ]
                },
                {
                    "content": "adocetus. The latter has 56-58 vertebrae, whereas C. saira",
                    "polygon": [
                        1.1226,
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                    "spans": [
                        {
                            "offset": 36190,
                            "length": 58
                        }
                    ]
                },
                {
                    "content": "has 63-68. Small larvae of the two species are remarkably",
                    "polygon": [
                        1.1226,
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                    "spans": [
                        {
                            "offset": 36249,
                            "length": 57
                        }
                    ]
                },
                {
                    "content": "similar in appearance, hence vertebral counts were used to",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36307,
                            "length": 58
                        }
                    ]
                },
                {
                    "content": "separate them.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36366,
                            "length": 14
                        }
                    ]
                },
                {
                    "content": "The saury occurred offshore to 145°W longitude",
                    "polygon": [
                        2.6668,
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                    ],
                    "spans": [
                        {
                            "offset": 36381,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "on most of the latitudinal lines.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36428,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "Interestingly, a much higher percentage of large anchovy",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36462,
                            "length": 56
                        }
                    ]
                },
                {
                    "content": "larvae were taken by the neuston net than are proportionately",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36519,
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                        }
                    ]
                },
                {
                    "content": "taken in standard net tows -- a difference of about 15 times.",
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                    "spans": [
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                            "offset": 36581,
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                    ]
                },
                {
                    "content": "Anchovy eggs and larvae were taken only on CalCOFI grid",
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                    ]
                },
                {
                    "content": "stations between lines 80-140 (off Pt. Conception to near",
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                    "content": "Hydrocarbons in Marine Food Chains",
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                    "content": "than lu.",
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                    "content": "larger than 0.45u. About 30% of the C14-DDT is associated",
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                    "content": "that could be directly available to the lower members of a",
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                    "content": "marine food chain.",
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                    "content": "Experiments conducted this month by Dr. John L. Roberts, NRC-",
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                    "content": "of three types. Further tests with jack mackerel, Trachurus",
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                    "content": "showing that reception of dissolved oxygen is not significant",
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                    "content": "for reflex conversions between active and passive gill breathing",
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                    "content": "in swimming fish.",
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                    "content": "Moderate success has been obtained with techniques for chronically",
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                    "content": "implanting electrodes in the respiratory center of the Pacific",
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                    "content": "changes that occur in activity of respiratory interneurons",
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                    "content": "as the mackerel shifts between active and ram modes of gill",
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                    "content": "lengths per second.",
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                    "content": "The third group of experiments represents a joint effort by",
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                    "content": "Research Institute, Balboa, Canal Zone, underway for a month",
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                    "content": "beginning in mid-June. Their objective is to differentiate",
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                    "content": "between the contributions of the lateral red muscle and the",
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                    "content": "main body of white muscle driving tail swimming in scombrids,",
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                    "content": "and the relative thermal outputs for maintaining elevated",
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                    "content": "body temperatures in tunas. Their pilot experiments with the",
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                    "content": "Pacific mackerel indicate that even during cruise swimming",
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                    "content": "(2-3 body lengths/sec), white muscle contributes. This has",
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                    "content": "been determined with the use of fine wire electrodes to re-",
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                    "content": "cord electromyograms and thermocouples to detect temperature",
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                    "content": "changes. Both muscle types are active at the higher burst",
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                    "content": "speeds that have been obtained (4-5 body lengths/sec), when",
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                    "content": "the red muscle seems to reach peak energy output.",
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                    "content": "These results tend to confirm the earlier biochemical studies",
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                    "content": "of Pritchard, Hunter, and Lasker on jack mackerel (Fish.",
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                    "content": "Bul1., 69: 379) that show activity in both types of muscles",
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                    "content": "at swimming speeds well below sustained speed thresholds.",
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                    "content": "An earlier contention has been that the red and white muscle",
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                    "content": "systems are separately active; the red at low cruising speeds,",
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                    "content": "and the white only during burst swimming.",
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                    "content": "correction, a preliminary calculation indicates a spread",
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                    "content": "Fish, pg. 59 .)",
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                    "content": "and the time at the beginning and end of the station is there-",
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                    ]
                },
                {
                    "content": "or turned off at night. At the end of the day (1600 hours)",
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                {
                    "content": "the data collection program is replaced by a general compu-",
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                    "content": "tational program. This program change is accomplished auto-",
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                    ]
                },
                {
                    "content": "matically from a pre-recorded magnetic tape cartridge. The",
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                {
                    "content": "stored target data are now reduced, summarized and dumped into",
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                    ]
                },
                {
                    "content": "peripheral mass storage capable of holding the entire trip's",
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                    "content": "collection.",
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                    "content": "TUNA ASSESSMENT AND DEVELOPMENT INVESTIGATIONS",
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                    "content": "Skipjack Tuna Tagged in Central Pacific Recovered in",
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                    "content": "Hawaiian Waters",
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                    "content": "A tagged 1812 pound skipjack tuna (aku) was recaptured in",
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                },
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                    "content": "Hawaiian waters by the M/V Sunfish on June 21. The fish",
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                    "content": "had been tagged and released by the IATTC on June 5, 1973",
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                    "content": "at latitude 22000'N, longitude 111º25'W. This brings to eight",
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                    "content": "the total number of returns from the central Pacific of skip-",
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                    "content": "jack tuna released in the eastern Pacific.",
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                    "content": "Seven of these",
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                    "content": "fish were recovered in Hawaii.",
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                },
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                    "content": "Some Problems Still in Evidence as Third Shipment of Live",
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                    "content": "Bait Reaches Hawaii in Transport Tank",
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                    "content": "The Honolulu Laboratory, continuing in its investigation of",
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                    "content": "ways to provide a more stable supply of tuna baitfish to live-",
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                    "content": "bait fisheries in the central and western Pacific Ocean, brought",
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                    "content": "Green,",
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                },
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                {
                    "content": "categories.",
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                    "content": "22",
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            ],
            "lines": [
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                    "content": "for the South Pacific albacore stock. Following this he will",
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                    "content": "undertake an in-depth analysis of the fishery. The sensitivity",
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                    "content": "test of the production model will involve an investigation of",
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                    "content": "the effects of a range of total catch and catch per unit effort",
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                    "content": "estimates on the maximum sustainable average yield (MSAY) .",
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                {
                    "content": "Initially, total catch of albacore in the South Pacific was",
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                    "content": "estimated using the catch data for the fishery based in",
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                    "content": "American Samoa, the non-Samoan catches for Japan from the",
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                    "content": "\"Annual Report of Effort and Catch Statistics by Area on",
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                {
                    "content": "Japanese Tuna Longline Fishery,\" and the non-Samoan catches",
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                {
                    "content": "for Korea and Taiwan from the Asian Tuna Conference Proceed-",
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                {
                    "content": "ings. The latter catch estimates are apparently preliminary,",
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                    "content": "and there were problems pertaining to the breakdown of the",
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                {
                    "content": "statistics by species and to whether the \"Pacific Ocean\"",
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                    "content": "category referred to the entire Pacific or not. Hence, the",
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                },
                {
                    "content": "accuracy of these estimates was investigated by re-estimating",
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                },
                {
                    "content": "catches based on the number of Korean and Taiwanese vessels",
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                },
                {
                    "content": "reported to be fishing at foreign bases in the South Pacific,",
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                    "content": "correction factors for non-reporting vessels, and catch rates",
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                    "content": "of Korean and Taiwanese vessels based in American Samoa.",
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                    "content": "The greatest difference in estimates using these procedures",
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                    "content": "was 10.4%, while the average yearly difference was 4.1%.",
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                    "content": "Dr. Skillman has concluded that the estimation of total catch",
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                    "content": "is not a serious problem in assessing the state of the albacore",
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                    "content": "stock. He has fitted a new generalized production model to",
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                    "content": "the new catch estimates of MSAY, but they do not differ sig-",
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                    "content": "nificantly from the earlier estimates.",
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                    "content": "Also, he has incor-",
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                    "content": "porated corrections for hypothetical 10% overestimates, and",
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                    "content": "10%, 25%, and 50% underestimates of total catch into the",
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                    "content": "generalized production model, but has not yet got the computer",
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                    "content": "program to converge to estimates of MSAY for all sets of data.",
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                    "content": "Following the solution of this computational problem, he and",
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                    "content": "Ms. Yong will investigate the effect of errors in estimating",
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                    "content": "catch per unit effort statistics on the estimate of MSAY",
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                    "content": "from the model.",
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                    "content": "Continuing the assessment of skipjack tuna resources, Dr.",
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                    "content": "Skillman and Ms. Yong have finished the initial processing",
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                    "content": "of length-frequency data on Hawaiian skipjack tuna in order",
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                    "content": "to separate size-classes by sex, month, and year. Skipjack",
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                    "content": "tuna size-classes (or age-groups) are being sought in order",
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                    "content": "to estimate mortality rates and von Bertalanffy growth",
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                    "content": "parameters on a cohort basis. Initial processing of the data",
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                    "content": "has been completed, but the results have not been assessed",
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                    "content": "for validity of size-class separation or appropriateness of",
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                },
                {
                    "content": "to",
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                    "confidence": 0.998,
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                },
                {
                    "content": "Research",
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                },
                {
                    "content": "Assistant",
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                },
                {
                    "content": "Ray",
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                },
                {
                    "content": "Sumida.",
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                },
                {
                    "content": "Sesepasara",
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                },
                {
                    "content": "collected",
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                },
                {
                    "content": "39",
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                {
                    "content": "sets",
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                },
                {
                    "content": "24",
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            ],
            "lines": [
                {
                    "content": "there with the Fishery Analysis Program, has been working on",
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                {
                    "content": "the first draft of a manuscript dealing with early growth",
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                    "content": "rates of skipjack and yellowfin tunas from the central Pacific",
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                {
                    "content": "as indicated by presumed daily growth layers in sagittae. He",
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                    "content": "has also been examining skipjack tuna otoliths from the Papua",
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                    "content": "New Guinea region to compare the growth rate of the geographical",
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                    "content": "population from that area with the one from the central Pacific.",
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                    "content": "The Papua New Guinea material was provided by Dr. Robert Kearney.",
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                    "content": "Ms. Patricia Seidl has been verifying initial and second read-",
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                    "content": "ings of nehu, Stolephorus purpureus, otoliths.",
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                    "content": "She has also",
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                    "content": "during R/V David Starr Jordan Cruise 80 to the Hawaiian Islands.",
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                    "content": "*",
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                    "content": "During June Dr. Paul Struhsaker worked on the first draft of",
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                    "content": "a manuscript dealing with age and growth of the nehu.",
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                    "content": "A translation of a Japanese report on the status of the",
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                    "content": "Japanese longline fishery was completed by Fishery Biologist",
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                    "content": "market (bluefin tuna, bigeye tuna). Another translation now",
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                    "content": "being edited describes Japan's skipjack tuna fishery develop-",
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                    "content": "ment activities in foreign areas.",
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                    "content": "Large Fish, Small Catches Characterize Season in Hawaii's",
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                    "content": "Skipjack Tuna Fishery",
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                    "content": "The skipjack tuna season in the Hawaiian fishery has been slow",
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                    "content": "through June, when the catch was estimated at 486 metric tons.",
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                    "content": "This was 435 metric tons below the catch in June 1973 and 289",
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                    "content": "Government of American Samoa employee Henry Sesepasara",
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                    "content": "Research Assistant Ray Sumida.",
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                    "content": "stocks.",
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                    "content": "of catch and effort data and, utilizing data from 10 vessels,",
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                    "content": "determined an average size of 79.3 cm and an albacore catch",
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                    "content": "per 100 hooks of 3.81. The small size of the albacore is",
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                    "content": "attributed to the vessels fishing between latitude 30° and",
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                    "content": "TUNA BAITFISH WORKSHOP HELD AT SWFC HONOLULU LABORATORY",
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                    "content": "An invitational tuna baitfish workshop co-sponsored by the",
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                    "content": "Sea Grant Program, was held at the NMFS Honolulu Laboratory",
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                    "content": "on tuna baitfish of the central and western Pacific, and to",
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                    "content": "explore some of the basic questions needing clarification in",
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                    "content": "tuna live-bait fisheries in these areas of the Pacific.",
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                    "content": "Hawaii, Japan, and islands of the western Pacific met first",
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                    "content": "by Honolulu Laboratory Director Richard S. Shomura, was a",
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                    "content": "presently in use in various parts of the Pacific.",
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                    "content": "necessary to a particular fishery.",
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                    "content": "Principal Biologist with the Department of Agriculture, Stock",
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                    "content": "and Fisheries, Konedobu, Papua New Guinea. This group identi-",
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                    "content": "local fisheries and in addition available for transport;",
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                    "content": "rently supporting modest stable or growing local skipjack tuna",
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                    "content": "fisheries (included here is the Hawaii fishery, where nehu,",
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                    "content": "be poor or not well enough known to be evaluated accurately.",
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                    "content": "Fishery Biologists Andrew Dizon and Heeny Yuen,",
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                    "content": "and Biological Aid Elliott Kawahara of the",
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                        6.0684,
                        4.5159
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                {
                    "content": "Extension of Appointment",
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                    "content": "Ebisuzaki, Ms. Iris E. ,Clerk-",
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                    ]
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                {
                    "content": "Typist, Termination of",
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                {
                    "content": "Temporary Appointment",
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                {
                    "content": "- Honolulu",
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                {
                    "content": "Almazon, Peter, Summer Aid,",
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                {
                    "content": "- La Jolla",
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                {
                    "content": "Temporary Appointment",
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                {
                    "content": "Weiss, Cheryal, Summer Aid,",
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                {
                    "content": "Temporary Appointment",
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                {
                    "content": "- La Jolla",
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                    "content": "Smith, Rose, Summer Aid,",
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                    ]
                },
                {
                    "content": "- La Jolla",
                    "polygon": [
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                {
                    "content": "Temporary Appointment",
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                {
                    "content": "18",
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                    "content": "Foreman, Terry, Biological Aid,",
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                    ]
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                {
                    "content": "Termination",
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                        7.2016,
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                {
                    "content": "- La Jolla",
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                    "content": "Hundt, Robert, Biological Aid,",
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                {
                    "content": "Termination",
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                {
                    "content": "- La Jolla",
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                    "content": "20",
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                {
                    "content": "-",
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                {
                    "content": "Termination",
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                    "content": "- La Jolla",
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                    "content": "Bliss, Kenneth, Oceanographer,",
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                    "content": "- La Jolla",
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                    "content": "1974.",
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                    "content": "- La Jolla",
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                    "content": "- La Jolla",
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                    "content": "- La Jolla",
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                    "content": "Woods, Maureen H. , Librarian,",
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                    "content": "28",
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                    "content": "Burke, Eugene, Janitor, Conver-",
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                {
                    "content": "- La Jolla",
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                    "content": "HONORS AND AWARDS",
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                    "content": "Dr. Elbert H. Ahlstrom, Senior Scientist at the La Jolla Lab-",
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                    "content": "oratory, who entered Federal service as a fishery biologist",
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                    "content": "with the sardine investigation in Stanford, California in 1939,",
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                    "content": "Schoning, on completion of 35 years of government service.",
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                    "content": "Mr. Schoning noted Dr. Ahlstrom's major scientific contribu-",
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                    "content": "tions to fishery biology, his work as an Adjunct Professor of",
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                {
                    "content": "Oceanography at the Scripps Institution of Oceanography, and",
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                    "content": "his recent receipt of the Department of Commerce Gold Medal.",
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                    "content": "Lt. Roger Hewitt, NOAA Officer at the La Jolla Laboratory, has",
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                    "content": "been notified by the California Board of Registration for Pro-",
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                    "content": "fessional Engineers that he has been awarded a certificate of",
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                    "content": "registration to practice civil engineering in the State of",
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            "content": ". Third Shipment of Live Bait Reaches Hawaii in Transport Tank; Some Problems Still in Evidence . . . 20"
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                }
            ],
            "content": "Hester, Frank J. 1974. Some considerations of the problems associated with the use of live bait for catching tunas in the tropical Pacific Ocean. Mar. Fish. Rev."
        },
        {
            "spans": [
                {
                    "offset": 1256,
                    "length": 30
                }
            ],
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            ],
            "content": "35(5): 1-12. (MFR Paper 1060.)"
        },
        {
            "spans": [
                {
                    "offset": 1287,
                    "length": 294
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "This report provides a summary of the tropical Pacific tuna live-bait fishing methods, identifies the major problems restricting the expansion of live-bait fisheries in the Pacific, and gives references and suggestions on methodology to investigators interested in working on baitfish problems."
        },
        {
            "spans": [
                {
                    "offset": 1582,
                    "length": 173
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            ],
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                }
            ],
            "content": "Neill, William H. , and E. Don Stevens. 1974. Thermal inertia versus thermoregulation in \"warm\" turtles and tunas. Science (Wash., D.C.) 184(4140): 1008-1010. (No abstract.)"
        },
        {
            "spans": [
                {
                    "offset": 1756,
                    "length": 33
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            ],
            "content": "ALBACORE FISHERIES INVESTIGATIONS"
        },
        {
            "spans": [
                {
                    "offset": 1790,
                    "length": 63
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            ],
            "boundingRegions": [
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            ],
            "content": "New Information on Albacore Migration Gathered on Jordan Cruise"
        },
        {
            "spans": [
                {
                    "offset": 1854,
                    "length": 117
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "The NOAA research vessel, David Starr Jordan, returned July 1 from a 33-day albacore-oceanography survey conducted in"
        },
        {
            "spans": [
                {
                    "offset": 1972,
                    "length": 72
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            ],
            "content": "This report does not constitute publication and is for information only."
        },
        {
            "spans": [
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                    "offset": 2045,
                    "length": 306
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            ],
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            ],
            "content": "cooperation with the American Fishermen's Research Foundation (AFRF). The AFRF chartered five albacore fishing vessels to conduct fish scouting and tagging operations. The Jordan con- ducted oceanographic stations and trolled for albacore. Daily radio contact was maintained ship-to-ship and ship-to-shore."
        },
        {
            "spans": [
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            "content": "According to Mr. R. Lynn, Oceanographer, who was the scientific leader on the cruise, the 1974 NMFS-AFRF cooperative albacore survey findings differ in major aspects from the surveys con- ducted in 1972 and 1973. In the offshore region, 135ºW, the temperature and salinity structure revealed that the fronts which have characteristically delineated the boundaries of the Transition Zone in earlier years were poorly formed. Consider- able lateral mixing of the major water masses had occurred. The scientists on the Jordan found many pockets of Pacific Central water interspersed with Subarctic water. Many minor fronts were found. In apparent response to these mixed con- ditions the albacore tunas, as shown by the catches, were widely scattered over a large region. Catches were made from 130°W-143ºW in early June as the vessels moved out through the intended survey region. While these early catches were good sporadically, no productive centers of fishing developed. During the 1972 and 1973 surveys productive fishing centers that lasted 2-3 weeks developed along major frontal regions to the west of 136°W. Despite the increased effort provided by the large number of independent vessels during this year, the albacore vessels found that good catches could not be sustained from day-to-day in any given locale."
        },
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            "content": "After the second week in June the vessels moved inshore of 134°W where two major centers of fishing developed: near 35°30'N, 132ºW and 34ºN, 126ºW. The Jordan worked about the northwesterly center and found the catches associated with a frontal feature that appeared as a tongue of warm, saline water, protruding eastward."
        },
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            "content": "The trolling effort by the Jordan provided valuable information. Repeated crossings of fronts frequently revealed albacore to be concentrated on one side and/or very near the front (i.e., near the surface temperature and salinity break). Scientists on the Jordan were able to bring the fleet onto productive fishing areas in three instances. In all, the cooperation between the research charter vessels, the independent fishing vessels, and the Jordan was highly effective. The fishing vessels tagged 1,369 albacore, more fish than had been tagged in any previous cooperative effort."
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        {
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            "content": "2"
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            "content": "The 1974 survey added considerable information to the study of the migration of albacore tuna and the association of albacore to oceanic frontal features, a principal objective of the cruise. The original intent, however, was to con- centrate the study upon that part of the migration that leads toward the northern centers of the fishery. While anticipated tag returns have yet to show where the albacore from the study region will appear in the fishery, it appears likely that this study again centered on the fish that will appear in the Cali- fornia fishery. During two runs to the north (40°30'N) catches were negligible and temperatures were cool for albacore. A study of the northern migration would most likely be more successful if attempted at a later period."
        },
        {
            "spans": [
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            "content": "COASTAL FISH COMMUNITIES INVESTIGATIONS"
        },
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            "content": "Distinctive Activity Patterns of Small Juveniles of Some Kelp-Bed Fishes Defined"
        },
        {
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            "content": "Dr. Edmund Hobson, Project Leader at the Tiburon Laboratory is currently observing the small juveniles of several kelp bed fishes, which are especially numerous during this season. Dr. Hobson's work is being done at Catalina Island. The activity patterns of these juveniles are being compared to those of the larger juveniles and adults, which have been the major subjects of the program to date. One expects to find differences in small juveniles because of differing food requirements related to their smaller size, but some of the differences found have been unexpected. For example, the olive rockfish, Sebastes serranoides, a major recreational species, was earlier found to be nocturnal when between about 50 and 120 mm long, and to occur in different locations at night than during the day. Current study shows that this fish is diurnal when smaller than about 45 mm, and to have day-night distributions strikingly different from the larger individuals. Clearly one must be familiar with each species throughout the 24-hour daily cycle, as well as through its different life history stages before that species' require- ments are known, including which of the many inshore habitats it utilizes."
        },
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            "content": "COASTAL FISHERIES INVESTIGATIONS"
        },
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            "content": "Silver Salmon Inoculated and Tagged in Preparation for Transfer to Pens at Tiburon"
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            "content": "Jointly conducted by U.C., Davis Sea Grant Extension, the San Francisco Tyee Club, the California Department of Fish"
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            "content": "and Game and the NMFS Laboratory at Tiburon, a project is underway to determine the feasibility of rearing silver salmon in salt water pens at Tiburon for later release into San Francisco Bay. Dr. Robert Brocksen, Research Physiologist and Mr. Lloyd Richards, Biological Technician at the Tiburon Laboratory, report that the pen for receiving the salmon was assembled and installed. Several dives by staff members were made to reinforce pilings at the Tiburon Laboratory dock where the pen is secured. Mr. Richards, Cris DeWees (U.C. Davis Sea Grant Extension) , and Coop Cooper (Agricultural Extension Service), traveled to the Department of Fish and Game's Mad River Hatchery in Eureka to inoculate 10,000 silver salmon for vibrio. At the same time the fish were fin clipped and tagged with a coded wire tag by John Rowell, Department of Fish and Game, and Marion Rowell, a technician employed by the San Francisco Tyee Club. The 1-week mortality, after inoculating and tagging, was only 14 fish out of 10,000."
        },
        {
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            "content": "Tiburon Laboratory Program Aids in Fishery Development"
        },
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            ],
            "content": "The fishery resources found in coastal waters of California are not being fully exploited because the industry does not have the technique to profitably harvest the resource or is not aware of the existence of value of the resources. Under Fishery Biologist Susumu Kato of the Tiburon Laboratory, the above problems are being attacked by researching more efficient fishing gear and techniques, and introducing them to the industry, and by investigating the value and extent of un- utilized or underutilized resources. The long-range objective is to develop and introduce methodology that will enable profitable fisheries to develop for such resources as the pelagic red crab, sea urchin, basking shark, California Tanner crab, and others."
        },
        {
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            ],
            "content": "This month Mr. Kato met with shrimp, crab, and trawl fisher- men to discuss proposed joint work at Santa Barbara and Avila Beach. Rock crab fishermen are looking for ways to increase their production while shrimp fishermen are troubled by the large number of fish taken in their trawls. Several trawl fishermen are interested in testing a trawl net developed in Canada, and also in exploring deep waters not presently fished. All these problems will be investigated as time permits."
        },
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            "content": "* *"
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            ],
            "content": "Red Crab -- Mr. Kato also traveled to Garrapanta Trout Farm in Carmel this month to set up a red crab feeding experiment with rainbow trout. The owner of the trout farm feels that a red-fleshed trout would be suitable for his line of specialized"
        },
        {
            "spans": [
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            "content": "4"
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            ],
            "content": "trout products. It has been shown previously that the carotenoid pigments found in red crabs are effective in coloring the flesh of rainbow trout. Marketing tests will be conducted when the colored trout are harvested, probably about 6-8 weeks after initiation of feeding red crabs. Some of the red crab feed was supplied by the Pacific Food Products Technology Laboratory in Seattle through Dr. John Spinelli."
        },
        {
            "spans": [
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            ],
            "content": "Sea Urchin -- Only three firms were operating consistently throughout June, each processing 4000-5000 sea urchins a day. Due to high production of urchin roe in Japan and the Republic of Korea during the summer months, prices have been depressed in the Japanese market. About 10 California firms are expected to be operating in August, each firm handling 4000-10,000 urchins per day. At least two firms hope to process up to 20,000 urchins daily. Since supply is critical two new firms will concentrate their efforts in supplying rather than processing sea urchins. One of these firms plans to use 10 divers/tenders operating from a \"mother ship\" and two small diving boats."
        },
        {
            "spans": [
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            ],
            "content": "It was learned recently that one sea urchin processing firm had gross sales of about $300,000 last year. Gross sales for the entire industry was probably in the order of 1.5 million dollars. Starting next month we will employ a part- time worker to sample the fishery and obtain more precise data on economics and on the sea urchins."
        },
        {
            "spans": [
                {
                    "offset": 10874,
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            "content": "Angler's Guide to the United States Pacific Coast in Preparation"
        },
        {
            "spans": [
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                    "offset": 10939,
                    "length": 390
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            ],
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            ],
            "content": "Work continued at the Tiburon Laboratory on the Pacific Angler's Guide being prepared by Fishery Biologist Jim Squire of the La Jolla Laboratory and Publications Specialist Susan Smith of the Tiburon Laboratory. The book describes marine sport fishes, fishing grounds, and angler facilities along the west coast from California to Alaska, and also includes Hawaii, American Samoa, and Guam."
        },
        {
            "spans": [
                {
                    "offset": 11330,
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            ],
            "content": "This month the sections covering southern California, Oregon, and Washington were sent to outside reviewers and work began on the final drawings of the tropical Pacific fishes. The option of publishing the Guide as a special issue of Marine Fisheries Review to save pre-publication time and costs was investigated with Mr. John Smiles, Chief of NOAA Visual Services Branch in Rockville, whose staff is preparing the charts for the Guide. Because reduction of the charts would be necessary to fit MFR's format, resulting in considerable loss of chart quality and readibility, the idea was abandoned; it is, therefore, most likely that the Guide will be treated as a special one-of-a-kind publication, as had been previously planned."
        },
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            "content": "5"
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            ],
            "content": "FISH ENVIRONMENT INVESTIGATIONS"
        },
        {
            "spans": [
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                    "offset": 12096,
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            ],
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            "content": "Simulation Model for Tuna Distribution: First Stage Completed"
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            "content": "The long-range goal of the Honolulu Laboratory's program on Life Studies of Tuna and Tunalike Fishes is to generate a predictive model of tuna distribution, abundance, and avail- ability to fisheries. The basis of the model is to be the joint physiological and behavioral responses of tunas to environmental variables, as determined in part through ex- perimental work with captive fishes. To explore the potential value of such a modeling approach and to provide an objective framework for further experimental work, Drs. W.H. Neill and A. E. Dizon have developed a simulation model for the responses of fishes to temperature, a variable of recognized importance in the ecology not only of tunas but also of fishes in general."
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            "content": "The procedure used in constructing the model was 1) to create a hypothetical tunalike fish (based on skipjack tuna) endowed with a simple set of capabilities and responses, all well recog- nized or reasonably deducible from extant experimental results; 2) \"follow\" the fish in computer-generated one-dimensional environments with temperature the only variable; and 3) look for consistencies between distributional features of the hypo- thetical fish and those reported for real tunas in real hetero- thermal environments. Physiological acclimation, accumulation and decay of thermal \"doses\" leading to lethal-temperature mortality, temperature preference, gradient perception, and basal swimming speed were treated deterministically; perception- contingent increases in swimming speed and the tendency to change swimming direction were modeled stochastically as a biased random walk with constant step-time (10 minutes in most simulations) ."
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            "content": "First runs of the model (without any a posteriori manipulation of process functions or input parameters) suggested a number of similarities between the behavior of the model and that of real tunas as observed at sea:"
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            "content": "Hypothetical 50 cm long fish weighing 2 kg:"
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            "content": "1) tended to \"seek out\" and remain within a few degrees of their preferred temperatures in a linear gradient as steep as 1ºC/km but to randomly disperse in gradients of 0.1 or 0.01ºC/km until encountering temperatures near the upper or lower lethal limits;"
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            "content": "2) tended to \"aggregate\" at randomly encountered thermal fronts, regardless of temperature;"
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            "content": "6"
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            "content": "3) would tend to become \"trapped\" and concentrated in areas of unfavorable temperature under certain con- ditions of temporal change in the distribution of temperature; similarly, would tend to be absent from areas of favorable temperature under certain conditions of temporal change in the distribution of water temperature."
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            "content": "4 ) would tend to be distributed within narrower thermal limits than conspecific fish of smaller size."
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            "content": "Next steps in development of the model will involve attempts to test the validity of proposed process functions experimentally and to determine parameters of the verified functions for tunas more accurately. Simultaneously, the model will be optimized and extended for simulation in three-dimensional space characterized by variation in both temperature and oxygen concentration."
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            "content": "Energy Budget Constructed for Skipjack Tuna"
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            "content": "The great economic importance of tunas and the many unique features of their physiology and behavior warrant intensive effort to develop a comprehensive model of the processes whereby they acquire and expend energy. Despite the frag- mentary nature of relevant physiological information on tunas, data from the best experimentally known tuna, the skipjack tuna, together with liberal application of the general paradigms of fish energetics, were sufficient to arrive at an energy budget for central Pacific skipjack tuna. This work, now represented by a rough-draft manuscript, was a joint effort by Drs. J. F. Kitchell and J.J. Magnuson of the University of Wisconsin and Dr. W.H. Neill of the Honolulu Laboratory."
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            "content": "The following table gives estimated energy budget parameters as functions of ration level, for a 1 kg skipjack tuna at 24ºC; daily ration is given as percent body weight consumed per day, assuming 1.1 kcal g - live food:"
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            "content": "Ration"
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            "content": "Process rate (calories/kilocalories . day)"
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            "content": "Level"
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            "content": "Respiration"
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            "content": "Egestion"
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            ],
            "content": "Considering that the metabolic rate of skipjack tuna may be virtually weight-independent (data from R. Gooding, Honolulu Laboratory) but that maximum daily ration probably declines allometrically with weight (~164 cal kcal -1day-1 . Wicar an exciting ecological speculation arises : skipjack tuna smaller than about 12 kg are growing at rates substantially less than maximal, being limited by availability of food and/ or predatory efficiency; skipjack tuna larger than about 15 kg obtain a maximum daily ration but are limited in further growth by a physiological constraint of large size coupled with an effective mechanism of heat retention -- overheating of the muscle mass, especially during bursts of feeding activity. Skipjack between 12 and 15 kg are affected by one limiting factor or the other, although less markedly. (Limits to fishes' energy intake, and, thus, growth are commonly environmental but rarely are dictated by organismal properties such as here suggested to be the case with skipjack tuna. ) Interestingly, the asymptotic length of skipjack tuna, calcu- lated from the von Bertalanffy growth model, varies from 82.3- 85.0 cm, depending on data source and treatment. Applying Magnuson's (1973) length-weight relationship, these maximum lengths correspond to maximum weights of 12.1-14.9 kg."
        },
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            "content": "Caloric Values Determined for Skipjack Tuna"
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            ],
            "content": "Prerequisite to serious consideration of fish-energetics prob- lems is accurate estimation of tissue caloric yields for the subject species. To complement construction of an energy budget for skipjack tuna, Dr. J.F. Kitchell and J.J. Magnuson of the University of Wisconsin and Dr. W.H. Neill of the Hono- lulu Laboratory have completed a caloric analysis of whole body, red muscle, and white muscle of just-caught and 10-day starved skipjack tuna."
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            "content": "Results suggest that neither of the following popular rules- of-thumb applies to skipjack tuna: 1) 1 g wet weight = 1 kcal, 2) for starved fish, energy loss = weight loss x constant."
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            "content": "Just-caught skipjack tuna, weighing 1.5 kg, had whole body averages of 1.46 kcal g-wet-1, 5.00 kcal g-dry-1, and 5.63 kcal g-ash-free-dry-1, with water constituting 70.8% of wet weight. Skipjack tuna of similar size and history but starved for 10 days in captivity had whole body averages of 1.18 kcal g-wet-1, with water constituting 74.7% of wet weight. Red muscle and white muscle showed the same trends as whole body, but decreases in kcal g-dry-1 and kcal g-ash-free-dry-1 for the two muscle tissues were only 25%, in red muscle, and 5% , in white muscle, as great as for whole body. Priority utili- zation of high-energy materials (fats) stored in the viscera"
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            "content": "presumably accounted for the dramatic changes in whole-body energy content during starvation."
        },
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            "content": "Thus, skipjack tuna tissues yield substantially more than 1 kcal g-wet-1, and, upon starvation, skipjack tuna not only metabolize their energy stores, in order of decreasing energy yield, but also hydrate."
        },
        {
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            "content": "A first-draft manuscript, now being revised, describes these observations and proposes that, for fishes generally, the energy yield per unit live weight can be estimated from the ratio, dry weight/wet weight, with accuracy adequate for many bioenergetics applications."
        },
        {
            "spans": [
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            "content": "Effects of Temperature on Routine Metabolism of Skipjack Tuna"
        },
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            ],
            "content": "Productivity of the seas in terms of tuna-flesh must depend on whether or not food supplies are adequate to provide the energy required by tunas for activity and growth. Messrs. R. K. C. Chang and B.M. Ito, under supervision of Dr. W.H. Neill, all of the Honolulu Laboratory, are extending pre- viously completed experiments on routine metabolism of skip- jack tuna at a single temperature (24°C) to temperatures throughout the skipjack's zone of thermal tolerance. These experiments will permit estimation of the energy requirement for routine activity in skipjack tuna at all temperatures where the fish are likely to occur."
        },
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            ],
            "content": "Experiments at 18° and 29°C have now been completed. Results offer the first direct confirmation of the notion that metabolism of intact tunas is largely temperature-independent. Partial analysis of data on oxygen-consumption at 18º and 29ºC indi- cates a Q10 of only 1.1 (metabolism at a given temperature only 10% more than at a temperature 10ºC lower); in fact, variability of the data gathered so far does not permit re- jection of the hypothesis that metabolism in skipjack tuna is completely independent of temperature (i.e., Q10 = 1.0)."
        },
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            ],
            "content": "MARINE MAMMAL INVESTIGATIONS"
        },
        {
            "spans": [
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            "content": "NMFS-Designed Large-Volume Purse Seine Net Modified for Improved Fish Handling"
        },
        {
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            ],
            "content": "Modification of the large-volume purse seine net designed by Richard McNeely and his associates at the NMFS Northwest Fisheries Center in Seattle, was completed in San Diego June 22. According to Dr. Eric Barham, Porpoise Program"
        },
        {
            "spans": [
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            "content": "9"
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            ],
            "content": "Manager, the net was successful in helping to lower the por- poise kill rate when used during the NMFS charter cruise of the seiner, John F. Kennedy in November-December 1973, but fishermen encountered problems in handling the net when sacking fish. During the modification, additional strips were added to the bunt end, rolling strips strengthened, and larger corks added to part of the cork line. The safety panel of 14-inch mesh to prevent entanglement of porpoise is also incorporated into the NMFS net."
        },
        {
            "spans": [
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            ],
            "content": "This re-worked net is now aboard a new tuna seiner, M/V South Pacific, where it will be used during regular commercial fishing operations, in a full trial of both its porpoise mortality-reducing and tuna fishing capabilities. Mr. Jerry Jurkovich of the NWFC is aboard the South Pacific, as an NMFS observer, to monitor the net's performance and record porpoise mortalities."
        },
        {
            "spans": [
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            "content": "Efforts Continue to Complete Analysis of Porpoise Population Data"
        },
        {
            "spans": [
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            ],
            "content": "Additional resources of manpower at the La Jolla Laboratory have been mobilized to complete the task of analyzing the voluminous data collected thus far on population dynamics of porpoises for incorporation in a report due in October 1974 on the impact of the tuna purse seine fishery on the porpoise populations of the eastern tropical Pacific. To this end, Dr. Gary Sakagawa of the Stock Assessment and Fishery Evaluation Investigations will assume overall coor- dination and responsibility for the quantitative tasks;"
        },
        {
            "spans": [
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            ],
            "content": "additional short-term and temporary personnel have been added to the staff to assist in computer programming. A contract has been given to Science Applications, Inc., of La Jolla, California to analyze measures of performance of the tuna fleet for possible trends. Dr. Tim Smith, Fishery Biologist in the Marine Mammal Investigations, will devote his major effort to the impact model."
        },
        {
            "spans": [
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            "content": "*"
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            ],
            "content": "As an essential element in its Marine Mammal Investigations, the La Jolla Laboratory sends trained porpoise observers to sea on tuna seiners of the U.S. fleet to collect information on porpoise life history and mortality. To date 35 observer trips have been completed within the Commission Yellowfin Regulatory Area and information collection during these cruises has been key punched and entered into the data bank. Two additional \"inside\" cruises with NMFS observers aboard are still in progress."
        },
        {
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            "content": "1.0"
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            ],
            "content": "Dr. William Perrin, Fishery Biologist at the La Jolla Lab- oratory, who is responsible for the conduct of life hstory studies on porpoise, is presently at the Smithsonian in Washington, D.C. to examine some 600 porpoise skulls sent to the Institution a year ago for cleaning by dermestid beetles. Dr. Perrin will collect data on the number of skull lesions caused by a parasitic nematode. Biologists have theorized that these nematode infestations are a major contributor to natural mortality in young spotted porpoise."
        },
        {
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            ],
            "content": "PHYSIOLOGY INVESTIGATIONS"
        },
        {
            "spans": [
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                    "length": 74
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            ],
            "content": "Effect of Petroleum Products in Marine Environment Investigated at Marinas"
        },
        {
            "spans": [
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            ],
            "content": "One of the objectives of the Physiology Investigations at the Tiburon Laboratory is to determine the acute and chronic effects of toxicants, such as crude oils, on marine and anadromous fish and invertebrate species. Investigators at the Tiburon Laboratory are using gas liquid chromatography analysis techniques to identify and quantify the compounds contained in petroleum products. The techniques used involve an apparatus for concentrating samples, and testing new gas chromatograph column packing materials, coupled with the tem- perature programming."
        },
        {
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            "content": "These investigations in the laboratory have laid the ground work for approaching an actual field situation. Marinas are one potential site for the discharge of petroleum and its products into the ocean which remain unexplored. Visits to nearby marinas have provided samples of gasoline and diesel fuels, motor boat oil, and the surrounding water and inverte- brates which have been exposed to these contaminants. Process- ing of these samples with the developed GC techniques is yield- ing data on the actual components of the petroleum products used and their subsequent fate in the marine environment."
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            "content": "Cooperative Striped Bass Kill Program Begins"
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            "content": "A cooperative study involving the Oceanic Society, University of California Medical Center, Regional Water Quality Control Board, the California Department of Fish and Game and the Tiburon Laboratory, began this month to study the annual striped bass kill which occurs in San Francisco Bay, according to Fishery Biologist Max Eldridge of the Tiburon facility."
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            "content": "A 24-hour water quality monitoring study was conducted June 19-20 during a spring tide condition involving a minus 1.7 ft."
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            "content": "11"
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            "content": "lower low tide. Numerous dead fish were found, including one small fish killed in the same vicinity of the study. Preliminary analysis of the data shows that the prevailing conditions which existed at the sampling site were not harm- ful enough to produce a fish kill. A noticeable dissolved oxygen sag did occur during the lower low tide stage but never went lower than 6 ppm concentration. A simple in-situ bioassy study, located in the area of known fish kills, is currently underway involving juvenile and adult striped bass."
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            "content": "STOCK ASSESSMENT AND FISHERY EVALUATION INVESTIGATIONS"
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            "content": "Progress in State/Federal Coastal Fisheries Program"
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            "content": "Stock Assessment Specialist Jean-Paul Troadec, Food and Agriculture Organization, Rome, arrived on June 2 at the La Jolla Laboratory to assist Alec MacCall, Fishery Biologist of the California Department of Fish and Game and Gary Stauffer, Fishery Biologist at the La Jolla Laboratory, in conducting the \"quick\" assessments of the local southern California fish stock as part of the cooperative CF&G/ SWFC marine recreational fisheries study. With his aid and guidance, reports were prepared on the status of six species: Northern anchovy (Engraulis mordax), Pacific sardine (Sardinops caerulea), Pacific mackerel (Scomber japonicus), California yellowtail (Seriola dorsalis), white seabass (Cynoscion nobilis), and Pacific bonito (Sarda chiliensis) ."
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            "spans": [
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            "content": "The State/Federal Steering Committee for the cooperative CF&G/NMFS research contract met June 12 at the Southwest Fisheries Center and reviewed the progress of Messrs. MacCall and Stauffer's work to the present, and their short-term goals. Formal preparations to continue the contract into FY 1975 were initiated. At this meeting, John Radovich of the California Department of Fish and Game was elected Chairman of the Steering Committee."
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            "spans": [
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            "content": "Progress Made on Stock-Recruitment Model of Fishes of the California Current Region"
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            ],
            "content": "Mathematician J. Zweifel of the La Jolla Laboratory is con- tinuing work on the model to simulate the movement, growth and survival of fish larvae in the upper mixed layer of the California Current region. Alogrithms for temperature specific growth and the stranding of eggs and larvae on a"
        },
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            "content": "12"
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        {
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            "content": "land mass have been completed. An analysis of temperature and/or size specific mortality is being carried out in order to provide best guess estimates of the parameters. Two- dimensional frequency arrays of drift speed and direction have been requested from the NMFS Pacific Environmental Group at Monterey and will be analyzed to determine the plausibility of pooling over similar areas and months."
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        {
            "spans": [
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            "content": "The monitor or control program for the model which will allow tracking many larvae or spawnings at one time is being adapted from a computer simulation by Levison, Ward and Webb of random drifts of vessels in the Pacific Ocean. Many of their alogrithms are directly interpretable in terms of fish larvae and their attention to minimizing core and input-output requirements has offered useful suggestions."
        },
        {
            "spans": [
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            "content": "Atlantic Tuna Data Prepared for Studies on the Status of Stocks"
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            "spans": [
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            ],
            "content": "Dr. G. Sakagawa and Messrs. K. Brennecke, A. Coan, and E. Holzapfel of the SAFE Investigations at the La Jolla Lab- oratory, were occupied this month in preparing data for studies on the status of Atlantic tuna stocks. The status of three important stocks of Atlantic tunas -- yellowfin, albacore and bigeye -- is scheduled to be determined before the 1974 annual meeting of the International Commission for the Conservation of Atlantic Tunas in Madrid, Spain."
        },
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            "content": "Growth of Laboratory-Reared Northern Anchovy Described"
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            ],
            "content": "Data from three experiments on growth of northern anchovy reared at the La Jolla Laboratory have been assembled by Fishery Biologists M. Kimura and G. Sakagawa. The data include fish from 2.9 mm at 2 days of life to 117.7 mm at approximately 20 months of life. A seasonal growth pattern has been discovered in the data."
        },
        {
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            "content": "During the first year growth is rapid to about the third or fourth month; it then starts decreasing to an asymptote. A two-stage Gompertz growth model, programmed by Mathematician J. Zweifel of the La Jolla Laboratory, is being used to describe this seasonal change in growth."
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            "content": "Brazilian Scientist Completes First Phase of Training"
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            ],
            "content": "Mr. L.A. Zavala-Camin, Scientific Researcher with the Instituto de Pesca, Santos, Brazil, completed the first phase of a three- part training schedule with scientists in the Stock Assessment"
        },
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            "spans": [
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            "content": "13"
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            "spans": [
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            "content": "and Fishery Evaluation Investigations at the La Jolla Lab- oratory. Since April, Mr. Zavala-Camin has been receiving training in techniques used in analyses and evaluation of data from longline tuna fisheries. Dr. G. Sakagawa, Fishery Biologist, supervised this phase of his training."
        },
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            "spans": [
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            "content": "Starting in July, Mr. Zavala-Camin will begin training in techniques used in application of dynamic pool models, under Dr. W. Lenarz, Fishery Biologist in this Investigation."
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            "content": "Dr. William Lenarz, Fishery Biologist at the La Jolla Lab - oratory, devoted much of the month to providing technical input in answers to questions brought forward at the Inter- American Tropical Tuna Commission Inter-Governmental meeting on Alternative Regulations and Enforcement, held in Washington, D.C., May 28-30, 1974. These questions were assigned to a sub-group that is chaired by Sr. Amin Zarur of Mexico. Dr. Steven Schanes, Commissioner to the IATTC, is coordinating the U. S. participation in the sub-group. Drs. William Fox and Lenarz are providing technical assistance to Dr. Schanes."
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            "content": "The questions posed to the sub-group concern allocation of the yellowfin tuna resource, impact of large vessels on the con- servation program, impact of uncontrolled growth of the fleet on the conservation program, and the possibility of limited entry of gear."
        },
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            "content": "*"
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            "content": "Mr. James Squire, Fishery Biologist at the La Jolla Laboratory, who is in charge of the cooperative marine game fish tagging program, reports that billfishing is excellent along the east coast of the tip of Baja California. In June alone, 260 striped marlin were tagged in this area. Thus far in 1974, 680 bill- fish have been tagged."
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            "content": "Mr. Squire, accompanied by Mr. I. Barrett, Deputy Director of the Southwest Fisheries Center, visited fishing resorts in Baja California, June 24-28 to present the annual Thomas and Margaret Gardiner Foundation awards to the Mexican fishing boat captains from whose boats the greatest number of bill- fishes had been tagged off Baja California during the period, June 1973-June 1974. The Center's cooperative billfish tagging program is well-received in the area."
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            "content": "STOCK AND RECRUITMENT INVESTIGATIONS"
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            "content": "Mr. K. Lal, Research Biologist of the California Department of Fish and Game, who is cooperating with Dr. Reuben Lasker,"
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            "content": "14"
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            "content": "Physiologist at the La Jolla Laboratory, in an attempt to spawn and rear striped bass in a seawater aquarium, reports that a new experiment to study the effect of red and white lights on the maturation of gonads of striped bass began in mid-June."
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            "content": "A larger tank, 15' x 4' was set up in the newly allotted space in the aquarium in lieu of a former smaller tank, 12' x 3', which has been removed."
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            "content": "Biopsy of fish in all tanks showed no change in gonad de- velopment of females, but the majority of males continued to stay in ripe condition. Only one female with 0.65-0.7 mm eggs was injected with human chorionic gonadotrophins. In view of the anticipated delay in the maturation of females at La Jolla, a consignment of 10,000 eggs of striped bass was obtained from the Elk Grove hatchery on June 28 for completion of a study on the comparative survival of larvae in fresh water and through gradual acclimation to seawater. The eggs hatched in a temperature-controlled room at 17ºC on the next day without any mortality."
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            "content": "Analysis Completed on Relationship Between Weight of Anchovy Eggs and Larval Length at 4 Days"
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            "content": "Dr. John Hunter, Fishery Biologist at the La Jolla Laboratory, completed an analysis this month on the relationship between the weight of anchovy eggs and the length of larvae at the age of 4 days. Length at age 4 days was dependent upon egg weight and temperature. For example, at 16℃ larvae from the smallest egg would be 4.0 mm whereas larvae from the largest eggs would be 4.5 mm. A difference of 0.5 mm is probably of negligible importance at temperatures above 16ºC because of a fast growth rate but at temperatures below 16℃ size at first feeding may be a significant element in survival."
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            ],
            "content": "This month, Dr. Hunter, assisted by Ms. C. Sanchez, Biological Technician, also established a relationship between anchovy egg volume and egg weight so that existent data could be used on seasonal trends in egg size. An interesting by-product of this analysis, according to Dr. Hunter, was that eggs spawned in response to injection of hormones had larger volumes for their weight than did ones naturally spawned."
        },
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            "content": "Neuston Net Samples - A Worthwhile Supplement to Standard CalCOFI Net Hauls"
        },
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            "content": "A paper is being prepared by Dr. Elbert Ahlstrom, Senior Scientist and Ms. Betsy Stevens, Biological Technician at the"
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            "content": "15"
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            "content": "La Jolla Laboratory for the International Council for the Exploration of the Sea meeting in Copenhagen, this fall, on the neuston net hauls on extended CalCOFI Cruise 7205. The neuston net is towed at the surface, with only about half of the net immersed. On this cruise, 115 neuston net hauls were taken on regular CalCOFI stations from off Puget Sound to below Cape San Lucas, Baja California. Offshore coverage was achieved by eight offshore latitudinal lines, run along latitudes 20, 24, 27, 31, 35, 39, 42, and 46ºN, usually ex- tending offshore to 145ºW longitude. On offshore coverage, 43 neuston hauls were taken."
        },
        {
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            "content": "About 80% of the neuston hauls contained fish larvae. The average number obtained per haul over the CalCOFI grid was 60 larvae-juveniles; the average number per haul offshore was 24 larvae-juveniles."
        },
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            "content": "Larvae occurring in largest numbers in the neuston collections were those of the northern anchovy, Engraulis mordax and of the Pacific saury, Cololabis saira. Saury larvae were taken in 75 hauls (1,447 specimens), and eggs in 16 (3,138 eggs) . Offshore on the southernmost line (along latitude 20ºN) , C. saira was replaced by the dwarf tropical saury, Cololabis adocetus. The latter has 56-58 vertebrae, whereas C. saira has 63-68. Small larvae of the two species are remarkably similar in appearance, hence vertebral counts were used to separate them. The saury occurred offshore to 145°W longitude on most of the latitudinal lines."
        },
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            "content": "Interestingly, a much higher percentage of large anchovy larvae were taken by the neuston net than are proportionately taken in standard net tows -- a difference of about 15 times. Anchovy eggs and larvae were taken only on CalCOFI grid stations between lines 80-140 (off Pt. Conception to near Santa Maria Bay). Anchovy larvae were taken at 25 stations and anchovy eggs at 15. Most of the large collections of anchovy larvae were obtained in night hauls."
        },
        {
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            ],
            "content": "Another species that occurred in exceptionally large numbers at one station off the Columbia River was the sablefish, Anoplopoma fimbria. A rockfish larva-juvenile which is possibly that of Sebastes alutus occurred in large numbers in two collections. This appears to be another species that concentrates at the surface during its late larval stage."
        },
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            "spans": [
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            "content": "The neuston hauls contained larvae-juveniles of 28 families. Over the same CalCOFI grid one would expect to take larvae of at least double this number of fish families. Hence, only a portion of the species are represented in neuston"
        },
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            "content": "16"
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            "content": "hauls. However, for certain species, such as the Pacific saury, this is an indispensable tool for establishing dis- tribution. As a matter of interest, the number of saury larvae taken on this one cruise was equivalent to the number taken in two decades of collections made with oblique plankton hauls."
        },
        {
            "spans": [
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            "content": "*"
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            ],
            "content": "Dr. H. Geoffrey Moser, Fishery Biologist at the La Jolla Lab- oratory, reports steady progress being made on the handbook for the identification of the larvae of eastern Pacific scorpion fishes. The sections of the genera Sebastes and Sebastolobus have been completed and the description of the genus Scorpaenodes is presently being prepared."
        },
        {
            "spans": [
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                    "offset": 38152,
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            ],
            "content": "Dr. Moser has also begun taxonomic analysis of the fish he collected in Magdalena Bay, Mexico. This work is a cooperative project with Dr. C. Matthews of the University of Baja Cali- fornia, Ensenada, as part of a Mexican government-sponsored investigation of Magdalena Bay as a possible site for mari- culture. Two summer students, Elaine Carlin of Humboldt State University and Jack Christian of Madison High School in San Diego are sorting, identifying and working up the meristic data under the supervision of Dr. Moser."
        },
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            "content": "Progress Made in Investigation of Transfer of Chlorinated Hydrocarbons in Marine Food Chains"
        },
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            "content": "This month, Dr. E. Scura and Mr. G. Rommel of the Scripps Institution of Oceanography, working in cooperation with Ms. G. Theilacker, Fishery Biologist at the La Jolla Lab- oratory continued their investigation of the transfer of chlorinated hydrocarbons (CHC) in marine food chains. Ex- perimental evidence suggests that a large portion of the CHC introduced into the sea is associated with particles smaller"
        },
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            "content": "than lu. To understand the transfer of CHC up the food chain, it is essential to know to what extent these particles are available to the food chain. If the CHC remains associated with particles smaller than lu, presumably they will be largely unavailable to filter feeders or small particulate feeders. However, there is a possibility that there is a partitioning of CHC from the particle surface to the lipid component of algal cells. Also, the possibility exists that smaller par- ticles could aggregate and form larger particles that would be more readily available to filter feeders. This last possi- bility is presently being investigated. C14-DDT vapor is bubbled through filtered seawater (0.45u millipore) so that the DDT is introduced into the water in the dissolved state or adsorbed onto particles smaller than 0.45u. One hour after"
        },
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            "content": "17"
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            "content": "introduction, 85% of the C14-DDT is associated with particles larger than 0.45u. About 30% of the C14-DDT is associated with particles larger than 0.9u. These observations suggest that smaller particles are aggregating to form larger particles that could be directly available to the lower members of a marine food chain."
        },
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            ],
            "content": "Experiments conducted this month by Dr. John L. Roberts, NRC- NOAA Research Associate at the La Jolla Laboratory, have been of three types. Further tests with jack mackerel, Trachurus symmetricus, were made to add confirmational data to the study showing that reception of dissolved oxygen is not significant for reflex conversions between active and passive gill breathing in swimming fish."
        },
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            "content": "Moderate success has been obtained with techniques for chronically implanting electrodes in the respiratory center of the Pacific mackerel, Scomber japonicus. The intent here is to detect any changes that occur in activity of respiratory interneurons as the mackerel shifts between active and ram modes of gill breathing whilst swimming at speeds between one and two body lengths per second."
        },
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            "content": "The third group of experiments represents a joint effort by Dr. Roberts and Dr. Jeffrey B. Graham, Smithsonian Tropical Research Institute, Balboa, Canal Zone, underway for a month beginning in mid-June. Their objective is to differentiate between the contributions of the lateral red muscle and the main body of white muscle driving tail swimming in scombrids, and the relative thermal outputs for maintaining elevated body temperatures in tunas. Their pilot experiments with the Pacific mackerel indicate that even during cruise swimming (2-3 body lengths/sec), white muscle contributes. This has been determined with the use of fine wire electrodes to re- cord electromyograms and thermocouples to detect temperature changes. Both muscle types are active at the higher burst speeds that have been obtained (4-5 body lengths/sec), when the red muscle seems to reach peak energy output."
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            ],
            "content": "These results tend to confirm the earlier biochemical studies of Pritchard, Hunter, and Lasker on jack mackerel (Fish. Bul1., 69: 379) that show activity in both types of muscles at swimming speeds well below sustained speed thresholds. An earlier contention has been that the red and white muscle systems are separately active; the red at low cruising speeds, and the white only during burst swimming."
        },
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            "content": "18"
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            "content": "SURVEY SYSTEMS ANALYSIS INVESTIGATIONS"
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            "content": "Free- Fall Camera to be Used in the Study of \"Wild\" Fish Schools"
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            "spans": [
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                    "offset": 42532,
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            ],
            "content": "A unique camera recently developed at Scripps Institution of Oceanography by Professor J. Isaacs and Dan Brown, and the interpretation of the photographs it takes, is the sub- ject of a study being made by Lt. Roger Hewitt, NOAA Officer at the La Jolla Laboratory, and John Graves, a third year biology major from University of California at San Diego. The camera and its light source are encased in a watertight housing which is dropped untethered from the ship while passing over a school of fish. As the optical package descends downward, at one of several calibrated rates, a solid-state timer and solenoid initiate an electro-mechanical process which opens the shutter, activates the strobe, and advances the film. At a specified depth, the systems pres- sure release unit frees a load of expendable ballast and the camera, exposed film and marker buoy rise to the surface."
        },
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            "content": "The present study, to be concluded before a second camera test in late July, has two principal objectives: the first is to determine from existing photos a frequency distribution of the minimum distances between adjacent fish and an estimate of the average school compaction (number of fish/unit volume) ; the second is to document the method used including a cost estimate in terms of man and equipment hours per photo, for the purpose of evaluating the expenditure of future effort."
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            "content": "Using a single photograph, lens geometry and a refractive correction, a preliminary calculation indicates a spread from fish to fish on the order of six body lengths and a density of 1.8 fish per cubic meter. Observations conducted by D.V. Uadokov on winter schooling herring describe a spatial density of 0.5-1 fish per cubic meter. (Ecology of Schooling Fish, pg. 59 .)"
        },
        {
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            "content": "Automated Hydroacoustic Data Acquisition and Processing System Performs Under Laboratory Simulation; Field Testing Planned"
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        {
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            "content": "The collection of large amounts of sonar target data, neces- sary for the isolation of sampling errors and biases associ - ated with acoustic assessment methods, has meant subjective logging by hand, accounting and processing procedures aboard the NOAA research vessel, Jordan, and at the laboratory in La Jolla, following a sonar cruise. The development of an"
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            "content": "19"
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            ],
            "content": "automated sonar data acquisition and processing system would eliminate the problem of operator subjectivity and decrease the cost in acquiring adequate samples of data. Such a system is now being developed by Jack Brown, Elec- tronic Technician at the La Jolla Laboratory and Lt. Roger Hewitt, NOAA officer, with the cooperation of the Navy Undersea Center in San Diego. The system performed suc- cessfully in laboratory simulation testing in June and is scheduled to be field tested in late July."
        },
        {
            "spans": [
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            "content": "The ship's speed and time are recorded with each target and may be used to calculate the area surveyed. It is used in the data collection program to determine when an oceanographic station has been reached and to suspend data recording while on station: start pulses continue to be counted, however, and the time at the beginning and end of the station is there- fore recorded."
        },
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            "content": "In shipboard operation, the system requires no attendance. Prior to departure, the computer is started, and the hour counter is pre-set to the current time. The sonar system is then started and may be left in operation 24 hours a day or turned off at night. At the end of the day (1600 hours) the data collection program is replaced by a general compu- tational program. This program change is accomplished auto- matically from a pre-recorded magnetic tape cartridge. The stored target data are now reduced, summarized and dumped into peripheral mass storage capable of holding the entire trip's collection."
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                }
            ],
            "content": "TUNA ASSESSMENT AND DEVELOPMENT INVESTIGATIONS"
        },
        {
            "spans": [
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                    "offset": 46286,
                    "length": 68
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            ],
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            ],
            "content": "Skipjack Tuna Tagged in Central Pacific Recovered in Hawaiian Waters"
        },
        {
            "spans": [
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                    "length": 384
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            ],
            "content": "A tagged 1812 pound skipjack tuna (aku) was recaptured in Hawaiian waters by the M/V Sunfish on June 21. The fish had been tagged and released by the IATTC on June 5, 1973 at latitude 22000'N, longitude 111º25'W. This brings to eight the total number of returns from the central Pacific of skip- jack tuna released in the eastern Pacific. Seven of these fish were recovered in Hawaii."
        },
        {
            "spans": [
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            "content": "Some Problems Still in Evidence as Third Shipment of Live Bait Reaches Hawaii in Transport Tank"
        },
        {
            "spans": [
                {
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                    "length": 187
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                }
            ],
            "content": "The Honolulu Laboratory, continuing in its investigation of ways to provide a more stable supply of tuna baitfish to live- bait fisheries in the central and western Pacific Ocean, brought"
        },
        {
            "spans": [
                {
                    "offset": 47024,
                    "length": 2
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            "content": "20"
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            ],
            "content": "to Honolulu a third trial shipment of California anchovy using the laboratory-designed baitfish transport tank. Roger Green, Leader, Baitfish Project, Donald Aasted, Fishery Methods and Equipment Specialist, and Reginald Gooding, Fishery Biologist, traveled to Long Beach to attempt bait aging and to test a new type of tank bottom vacuum cleaning system prior to shipping the bait. An attempt by"
        },
        {
            "spans": [
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            "content": "the bait dealer to age bait failed, apparently because of an influx of red tide into Long Beach Harbor. The new clean- ing system worked efficiently, but is also cleaning out fish that aren't dead. A small load of 300-350 pounds was returned to Honolulu with Mr. Green accompanying the transport tank aboard the freighter Matsonia. The problem of accurately estimating the amount loaded into the tank is apparently re- sponsible. The fish are netted from the catcher boat. Weight of fish per scoop may range from 2-6 pounds. Further work is planned to refine our original estimates of fish."
        },
        {
            "spans": [
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                    "offset": 48015,
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            ],
            "content": "Lt. Warren Taguchi, NOAA Corps, La Jolla Laboratory, assisted in the Long Beach operations as training for future involve- ment in the project."
        },
        {
            "spans": [
                {
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            ],
            "content": "M/V Neptune Catches Skipjack Tuna with California Anchovy"
        },
        {
            "spans": [
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            ],
            "content": "Anchovy from the third shipment of baitfish brought from Cali- fornia were given to the Honolulu-based fishing vessel Neptune, which used them in 2 days of fishing. The Neptune returned with catches of 10,000 pounds and 11,000 pounds on those 2 days. Anchovy were used both to chum the fish, after which they were caught with the local bait, nehu, and to do the actual fishing. In every instance the fishermen were com- pletely pleased with their performance."
        },
        {
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            "content": "Fishery Analysis Program Initiates Tests Preliminary to In-Depth Analysis of South Pacific Albacore Fishery"
        },
        {
            "spans": [
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            ],
            "content": "Fishery Biologist Dr. Robert A. Skillman leads the Honolulu Laboratory's Fishery Analysis Program in carrying out the ob- jectives of Tuna Monitoring and Assessment of the Pacific and Indian Oceans, with major emphasis on stock assessment, fishery monitoring, and fishery liaison aspects of SWFC's skipjack tuna development plan. Also, the status of exploited stocks of other tuna and tunalike resources are monitored through the systematic collection and analysis of fisheries data."
        },
        {
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            ],
            "content": "With present priority being given to a study of the South Pacific albacore, Dr. Skillman, with the assistance of Mathe- matician Ms. Marian Y.Y. Yong, has initiated a sensitivity test of the generalized production model developed recently"
        },
        {
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            "content": "21"
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            ],
            "content": "for the South Pacific albacore stock. Following this he will undertake an in-depth analysis of the fishery. The sensitivity test of the production model will involve an investigation of the effects of a range of total catch and catch per unit effort estimates on the maximum sustainable average yield (MSAY) . Initially, total catch of albacore in the South Pacific was estimated using the catch data for the fishery based in American Samoa, the non-Samoan catches for Japan from the \"Annual Report of Effort and Catch Statistics by Area on Japanese Tuna Longline Fishery,\" and the non-Samoan catches for Korea and Taiwan from the Asian Tuna Conference Proceed- ings. The latter catch estimates are apparently preliminary, and there were problems pertaining to the breakdown of the statistics by species and to whether the \"Pacific Ocean\" category referred to the entire Pacific or not. Hence, the accuracy of these estimates was investigated by re-estimating catches based on the number of Korean and Taiwanese vessels reported to be fishing at foreign bases in the South Pacific, correction factors for non-reporting vessels, and catch rates of Korean and Taiwanese vessels based in American Samoa. The greatest difference in estimates using these procedures was 10.4%, while the average yearly difference was 4.1%. Dr. Skillman has concluded that the estimation of total catch is not a serious problem in assessing the state of the albacore stock. He has fitted a new generalized production model to the new catch estimates of MSAY, but they do not differ sig-"
        },
        {
            "spans": [
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            ],
            "content": "nificantly from the earlier estimates. Also, he has incor- porated corrections for hypothetical 10% overestimates, and 10%, 25%, and 50% underestimates of total catch into the generalized production model, but has not yet got the computer program to converge to estimates of MSAY for all sets of data. Following the solution of this computational problem, he and Ms. Yong will investigate the effect of errors in estimating catch per unit effort statistics on the estimate of MSAY from the model."
        },
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            ],
            "content": "Continuing the assessment of skipjack tuna resources, Dr. Skillman and Ms. Yong have finished the initial processing of length-frequency data on Hawaiian skipjack tuna in order to separate size-classes by sex, month, and year. Skipjack tuna size-classes (or age-groups) are being sought in order to estimate mortality rates and von Bertalanffy growth parameters on a cohort basis. Initial processing of the data has been completed, but the results have not been assessed for validity of size-class separation or appropriateness of dividing the data into sex, month, and year categories."
        },
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            "content": "22"
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            ],
            "content": "Mr. Richard N. Uchida, Fishery Biologist in the Fishery Analysis Program, participated in the Tuna Baitfish Work- shop held at the Honolulu Laboratory and acted as rapporteur for the session on Baitfish Transport, Holding, and Sub- stitutes. He met with Dr. Robert Kearney, Department of Agriculture, Stock and Fisheries, Konedobu, Papua New Guinea, and Dr. Skillman twice in early June to discuss the design and format for the South Pacific Commission's Daily Tuna Catch Record and the Tuna Length-Weight-Sex Data sheets. approval by the Laboratory Director, 500 copies of the log sheets were printed for distribution at the 7th Technical Fisheries Meeting scheduled to be held in Tonga in mid-July. Mr. Uchida continued work on a paper reviewing the develop- ment or potential development of skipjack tuna fisheries in the southwest Pacific and Indian Oceans. This review is being prepared for a meeting of the IOFC/IPFC tuna working party at the request of the Director, Honolulu Laboratory, for John Gulland, FAO."
        },
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            "content": "Upon"
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            ],
            "content": "As part of the continuing assessment of other tuna and tuna- like resources, all statistical testing and reworking of re- sults for the manuscript, \"Von Bertalanffy growth curves for striped marlin, Tetrapturus audax, and blue marlin, Makaira nigricans, in the central North Pacific\" by Robert A. Skillman and Marian Y. Y. Yong have been completed following reviews by Mr. Uchida and Fishery Biologist Dr. Jerry A. Wetherall at the Honolulu Laboratory."
        },
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            ],
            "content": "During June, Dr. Jerry Wetherall participated in the Tuna Baitfish Workshop, presenting a brief paper summarizing his analysis of catch and effort statistics for the nehu fishery in Kaneohe Bay. Together with Dr. Skillman, Dr. Wetherall completed a brief covariance analysis of skipjack tuna morpho- metrics, with data compiled during the days of the Pacific Oceanic Fishery Investigations. They concluded that further morphometric studies on skipjack tuna in the central and western Pacific would not be worthwhile."
        },
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            "spans": [
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            ],
            "content": "Dr. Wetherall is now developing plans for a comprehensive study of the population dynamics of North Pacific albacore."
        },
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            ],
            "content": "Growth Rates of Tunas and Other Fishes Suggested by Study of Otoliths"
        },
        {
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            ],
            "content": "Fishery Biologist Dr. Paul Struhsaker at the Honolulu Lab- oratory reported that Mr. James Uchiyama, Research Assistant"
        },
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            ],
            "content": "there with the Fishery Analysis Program, has been working on the first draft of a manuscript dealing with early growth rates of skipjack and yellowfin tunas from the central Pacific as indicated by presumed daily growth layers in sagittae. He has also been examining skipjack tuna otoliths from the Papua New Guinea region to compare the growth rate of the geographical population from that area with the one from the central Pacific. The Papua New Guinea material was provided by Dr. Robert Kearney. Ms. Patricia Seidl has been verifying initial and second read- ings of nehu, Stolephorus purpureus, otoliths. She has also been preparing otoliths from tunas and other fishes collected during R/V David Starr Jordan Cruise 80 to the Hawaiian Islands."
        },
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            "content": "* *"
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            ],
            "content": "During June Dr. Paul Struhsaker worked on the first draft of a manuscript dealing with age and growth of the nehu."
        },
        {
            "spans": [
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                    "length": 514
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            ],
            "content": "A translation of a Japanese report on the status of the Japanese longline fishery was completed by Fishery Biologist Tamio Otsu at Honolulu. This translated article gives a vivid summary of the changing position of the tuna longline fishery in Japan, where the effort has shifted from fish for export (albacore, yellowfin) to fish for the domestic fresh fish market (bluefin tuna, bigeye tuna). Another translation now being edited describes Japan's skipjack tuna fishery develop- ment activities in foreign areas."
        },
        {
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            ],
            "content": "Large Fish, Small Catches Characterize Season in Hawaii's Skipjack Tuna Fishery"
        },
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            "spans": [
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            ],
            "content": "The skipjack tuna season in the Hawaiian fishery has been slow through June, when the catch was estimated at 486 metric tons. This was 435 metric tons below the catch in June 1973 and 289 metric tons less than the long-term June average (1948-73) . The catch for the first 6 months of 1974 was estimated at 1,549 metric tons, 301 metric tons below last year's catch for the same period and 301 metric tons below the average in 1948-73. The large fish this summer are unusually large, many weighing in excess of 14 kg."
        },
        {
            "spans": [
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            "content": "*"
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                }
            ],
            "content": "Government of American Samoa employee Henry Sesepasara recorded the lengths of 2,173 albacore from 46 vessels at Samoa during the period May 25 to June 21, according to Research Assistant Ray Sumida. Sesepasara collected 39 sets"
        },
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            "content": "24"
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            "content": "of catch and effort data and, utilizing data from 10 vessels, determined an average size of 79.3 cm and an albacore catch per 100 hooks of 3.81. The small size of the albacore is attributed to the vessels fishing between latitude 30° and 40°S."
        },
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            "content": "TUNA BAITFISH WORKSHOP HELD AT SWFC HONOLULU LABORATORY"
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            "content": "An invitational tuna baitfish workshop co-sponsored by the National Marine Fisheries Service and the University of Hawaii Sea Grant Program, was held at the NMFS Honolulu Laboratory June 4-6. A major purpose of the workshop was to bring together all information gathered thus far on baitfish, with emphasis on tuna baitfish of the central and western Pacific, and to explore some of the basic questions needing clarification in the face of the proposed development and expansion of skipjack tuna live-bait fisheries in these areas of the Pacific."
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            "content": "Thirty-seven participants from the mainland United States, Hawaii, Japan, and islands of the western Pacific met first in general session, where they considered the essentials of a suitable baitfish for skipjack tuna pole-and-line fishing. These criteria were organized as \"fisherman-related\" and \"tuna-related,\" and the final product of the session, chaired by Honolulu Laboratory Director Richard S. Shomura, was a comparison to one another of the more important baitfishes presently in use in various parts of the Pacific."
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            "content": "Workshop sessions dealt with natural stocks; cultured species; and baitfish transport, holding, and substitutes, with a dis- cussion of the economics of each method of providing the bait necessary to a particular fishery."
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            "content": "The session on natural stocks was conducted by Dr. R. E. Kearney, Principal Biologist with the Department of Agriculture, Stock and Fisheries, Konedobu, Papua New Guinea. This group identi- fied the principal natural baitfish resources of the Pacific as falling into three categories: the large stocks of Engraulis found in the eastern and extreme western Pacific -- as off the mainland United States west coast and off Japan -- adequate for local fisheries and in addition available for transport; smaller stocks of other baitfishes, mainly Stolephorus, cur- rently supporting modest stable or growing local skipjack tuna fisheries (included here is the Hawaii fishery, where nehu, S. purpureus, is the principal baitfish); and stocks known to be poor or not well enough known to be evaluated accurately. The group recommended improved bait handling and holding tech- niques, and intensified acquisition and exchange of information on naturally occurring stocks."
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            "content": "25"
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            "content": "The session on cultured baitfish species, under the leader- ship of Mr. Shomura, aimed at providing guidelines for sub - sequent actions in the development of baitfish culture. The complexity of the subject was noted, and long- and short-range proposed approaches were aired. The group prepared a chart outlining the principal factors to be considered in the culture of known tuna baitfish."
        },
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            "content": "Honolulu Laboratory Fishery Biologist Tamio Otsu opened the session on baitfish transport, holding, and substitutes, stressing the need to establish direction and guidelines for ongoing baitfish transport studies presently being conducted by the NMFS Honolulu Laboratory. A baitfish transport tank has been developed from a surplus 5,000-gallon aircraft refuel- ing tank, and two trial shipments of California anchovy brought to Hawaii for use as baitfish. Discussion of problems of the experimental bait transport system centered on heavy mortalities experienced and on the importance of aging the bait before shipping. The group approved of HL's approach to bait transport, and recommended a third trial shipment in the existing tank before undertaking an evaluation of tank design. Cost factors clearly affect the design and construction of a tank of \"ideal\" configuration."
        },
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            "spans": [
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            "content": "In the final general session, participants established an order of priority for further studies: for Hawaii, the anchovy trans- port system; for American Samoa, the culturing and sea trials of mollies, initiation of Apogon studies by the Trust Territory of the Pacific Islands; and for other areas, the development of cultured baitfish and natural stocks."
        },
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            "content": "The 35 contributed working papers constitute a valuable collec- tion of current baitfish knowledge, and proceedings and selected working papers of the workshop will be published."
        },
        {
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            "content": "DR. REUBEN LASKER RELINQUISHES EDITORSHIP OF NMFS PUBLICATIONS"
        },
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            "content": "After 4 years as Scientific Editor of NMFS publications, Dr. Reuben Lasker, Physiologist and Leader of the Stock and Re- cruitment Investigations at the La Jolla Laboratory, will turn the editor's job over to Dr. Bruce Collette of the NMFS Sys- tematics Laboratory in Washington, D.C. on July 1, 1974."
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            "content": "Dr. Lasker's tenure as editor has been marked with many achieve- ments but he has been particularly instrumental in bringing new lustre to the 80-year old scientific publication, Fishery Bulletin. Before 1971, the Fishery Bulletin appeared irregularly. In the years 1968-70, the average number of pages printed per year was 391. In the first year of Dr. Lasker's editorship, the Fishery Bulletin became a quarterly. In the years 1971-73, the average number of pages printed per year almost tripled, reaching 1,119."
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            "content": "26"
        },
        {
            "spans": [
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            "content": "The success of the Fishery Bulletin is reflected by its cir- culation. First put on sale in January 1972, the Fishery Bulletin within less than a year was selling more than 1,000 copies and the list is growing despite increased subscrip- tion costs. It has proven itself an indispensable research journal to those in the field of fisheries. With the free circulation, which has been held to a minimum, added to the paid, the Fishery Bulletin now reaches almost as many readers as the Journal of the Fisheries Research Board of Canada and the Transactions of the American Fisheries Society, both out- standing publications in the field."
        },
        {
            "spans": [
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            "content": "As editor, Dr. Lasker was also instrumental in initiating a rigorous peer review system for refereeing manuscripts, thus helping bring the scientific content of NMFS's published work to a high level."
        },
        {
            "spans": [
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            "content": "While working as editor half-time, Dr. Lasker continued his researches on fish physiology."
        },
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            "content": "AUTOMATIC DATA PROCESSING SCIENTIFIC ADVISORY COMMITTEE ESTABLISHED AT SWFC"
        },
        {
            "spans": [
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            ],
            "content": "An ADP Scientific Advisory Committee has been established at the Center this month to advise, assist and review the Center's ADP tasks. Dr. W. Fox was elected chairman of the group and Mr. Ralph Bates, Systems Analyst, was appointed the Executive Secretary; other members of the committee are L. Eber, D. Mackett, and P. Smith."
        },
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            ],
            "content": "PUBLIC AFFAIRS"
        },
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            ],
            "content": "During the week of June 17 the Honolulu Laboratory responded to two requests for assistance. Research Assistants Paul Shiota and Ray Sumida collected and shipped 120 skipjack tuna eyes to Dr. Gerard Armand of the Boston Institute of Bio-Medical Research in Boston, and sent four skipjack tuna to Dr. Peter Lerke, Head of the Seafood Research, University of California, Berkeley. The fish were to be used to study the process of spoilage, and they were shipped without any ice, as instructed."
        },
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            "content": "27"
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            "content": "June 27 - A public meeting on 1974-75 herring regulations was held by the California Department of Fish and Game in the meeting room of the Tiburon Laboratory. About 35 persons representing commercial and sportfishing interests as well as the press attended and made comments on proposed laws for the commercial herring fisheries of San Francisco and Tomales Bays."
        },
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            "content": "SEMINARS"
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            "content": "Honolulu Laboratory"
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            ],
            "content": "June 7 Mr. David Mackett, Planning Officer, SWFC, - gave a seminar to the staff on \"Network Techniques.\""
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            ],
            "content": "10 Fishery Biologists Walter Matsumoto and Robert - Skillman presented to the staff \"dry runs\" of the talks they would give at the Hawaiian Invitational Allison Tuna Tournament (HIATT) ."
        },
        {
            "spans": [
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            ],
            "content": "16 Mr. Matsumoto, Dr. Skillman, and Mr. Heeny Yuen presented a 2-hour seminar on the biology of yellowfin tuna to interested participants of the HIATT."
        },
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            "content": "28 Dr. James Kitche11, Laboratory of Limnology, University of Wisconsin gave a seminar to the research staff on some speculations about the ecology of skipjack tuna arrived via bio- energetics consideration. Cooperating investi- gator Dr. Kitchell spent the month of June at SWFC Honolulu Laboratory to conclude work on a first-cut model of bioenergetics of skipjack tuna. While in Honolulu he prepared the first draft of a manuscript describing this energy budget."
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            "content": "Tiburon Laboratory"
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            "content": "A seminar series has been initiated at Tiburon Laboratory beginning in July. The scientific staff will present seminars on work accomplished or in progress. Outside speakers will also be invited. The first four speakers and their topics are:"
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            "content": "28"
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            "content": "July 8 - Norman Abramson - The Yield per Recruit Model in Non-Technical Terms"
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            ],
            "content": "July 19 Rich Faris - An Introduction to the Lawrence- Berkeley Computer System"
        },
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            "content": "July 26 Susan Smith - Marine Recreational Fishing - San Francisco Bay Area"
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            "content": "August 2"
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            "content": "Jeannette Struhsaker - Applications of Factor Analysis"
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            "content": "La Jolla Laboratory"
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            "content": "June 13 Dr. J. Michael Colebrook, Institute for Marine Environmental Research, Plymouth, England, discussed \"The Continuous Plankton Survey.\" (Dr. Colebrook is presently a visiting scientist at the La Jolla Laboratory for 6 months, working with Dr. Paul Smith on time series of CalCOFI data.)"
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            "content": "MEETINGS AND TRAVEL"
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            "content": "June 1-7 Fishery Biologists Andrew Dizon and Heeny Yuen, and Biological Aid Elliott Kawahara of the Honolulu Laboratory spent the week on board the M/V Kamalii Kai. The purpose of this travel was to collect data on the movement of yellow- fin tuna off the leeward coast of Oahu by acoustic tracking techniques."
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            "content": "2 - 4 Dr. Brian Rothschild, Center Director, traveled to Seattle, Washington to attend the Western Center Director's Meeting."
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            "content": "3- 4 Dr. R.H. Baird, Fisheries Adviser, South Pacific - Commission, visited the Honolulu Laboratory en route to and from meetings in New York, and met several times with Director R.S. Shomura, particularly to discuss the tuna baitfish workshop."
        },
        {
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            "content": "3-7 Ms. Doris Robinson, Seafood Consumer Specialist, - Southwest Region, Terminal Island, spent the week in Honolulu to develop a fisheries educa- tion program in cooperation with Sea Grant and the Food and Nutrition Sciences Department, University of Hawaii."
        },
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            "content": "29"
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        {
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            "content": "June 3-20 Messrs. R. McNeely, D. Twohig, J. Jurkovich, and A. Barcott, Northwest Fisheries Center to work in San Diego on modification of the NMFS experimental large-volume purse seine."
        },
        {
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            "content": "4 - 6 Thirty-seven participants attended the Tuna Baitfish Workshop held at the SWFC Honolulu Laboratory (see preceding section) ."
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            "content": "4 - 7 Dr. Paul Smith, Leader of the Survey Systems Analysis Investigation at the La Jolla Lab- oratory, attended conferences in Chicago. He delivered a paper entitled, \"CalCOFI, the first 25 years,\" to attendees at the Inter- national Water Resources Symposium."
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            "content": "18-21 In Miami, Dr. Smith participated in a review of the environmental impact statement in re- lation to oil drilling in the northeastern Gulf of Alaska, and other parts of the outer continental shelf."
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            "content": "11 The CalCOFI Committee met at the Southwest Fisheries Center. The Committee is now com- posed of Mr. Joseph Reid of the Scripps Institution of Oceanography, who replaced Professor John Isaacs; Mr. John Radovich of the California Department of Fish and Game, who replaced Mr. Herb Frey, and Dr. Brian Rothschild of NMFS. A feature of this meeting was a symposium on methods of stock assessment. Dr. E. Ahlstrom discussed egg and larval surveys and Dr. Gary Stauffer talked about effort statistics."
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            ],
            "content": "11-12 Dr. Vance McClure, Chemist at the Tiburon Laboratory, attended an Inshore Ecology Workshop in Seattle, Washington."
        },
        {
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            "content": "The purpose of the workshop was to provide an opportunity for NMFS researchers in the field of estuarine and ocean pollution to interact and to coordinate their efforts. Overviews of work at the various laboratories were presented which included surveys of aquatic population and toxicity and distri- bution studies of oil, pesticides and heavy metals. A discussion of the role of the re- search laboratories in the evaluation of environmental impact statements concluded the meeting."
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            "content": "30"
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            "content": "June 17-20 Dr. William H. Neill, of the Honolulu Lab- oratory, attended AIBS meetings in Tempe, Arizona where he presented a paper \"Behavioral regulation of environment by pelagic marine fishes\" at the symposium on Distributional Ecology of Aquatic Organisms."
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            "content": "18 Ms. Eleanor Shannon, NOAA Federal Women's and Special Program Coordinator, and John G. Norris, Pacific Region Headquarters Personnel Officer, NWS, met with Director R. Shomura of the Honolulu Laboratory and discussed special programs such as EEO and the Federal Women's Program. Later in the morning, Ms. Shannon, accompanied by Mr. Norris, spoke to all the women employees of the Honolulu Laboratory."
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            "content": "18 SWFC Director Brian Rothschild presented a general overview of recreational fisheries research at the Center at a meeting sponsored by the California Department of Fish and Game in Long Beach, California and attended by representatives of southern California sportfishing interests (Ocean Fish Protective Association, Southern Council of Conservation Clubs, Sportfishermen's Association of California, Southern California Sports Council and the Greater Los Angeles Council of Diving Clubs) . Mr. G. V. Howard, Director of the Southwest Region, discussed Regional/State aspects of marine research and management projects related to sportfishing."
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            "content": "19 Mr. Ralph Bates, Systems Analyst at the La Jolla Laboratory, attended a meeting of the Government Automatic Data Processing Council of Southern California, held in San Clemente."
        },
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            "content": "19 Mr. Shomura attended a meeting of the Natural Area Reserves System Commission called by John Maciolek, Acting Chairman of the Commission."
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            "content": "19-20"
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            "content": "SWFC Executive Officer Ben Remington traveled to the Tiburon Laboratory to become familiar with the physical facility, review financial control, and discuss the Tiburon site lease arrangements with the Consumer Products Safety Commission."
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            "content": "June 19-21 Representing the SWFC, Mr. Izadore Barrett, Deputy Director, traveled to Mexico City during a meeting of CalCOFI scientists with counterpart Mexican National Fisheries Institute (INP) researchers to plan cooperative CalCOFI and other fisheries research."
        },
        {
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            "content": "24- 27 Mr. David Mackett, Planning Officer for the SWFC, traveled to Washington, D.C. to attend a statistics meeting on policy with respect to State/Federal responsibility."
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            "content": "24-28"
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            "content": "- Center Director Brian Rothschild attended the Regional and Center Director's meeting in Washington, D.C."
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            "content": "24-28 Drs. Reuben Lasker and Michael Laurs attended the American Society of Limnology and Ocean- ography meeting held in Seattle. Dr. Lasker presented a paper entitled, \"A link between food chain studies and fisheries research: a larval fish bioassy,\" and Dr. Laurs dis- cussed a paper written with Mr. F. Miller of the IATTC, \"The El Nino of 1972-73 in the eastern tropical Pacific.\""
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            "content": "24- 28"
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            "content": "As part of the State/Federal research pro- grams, Messrs. Izadore Barrett and James Squire of the La Jolla Laboratory visited fisheries and tourist officials in southern Baja California to ascertain the data base available for the marine recreational fisheries catch in that region."
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            "content": "27 A Baitfish Committee meeting was held at the Honolulu Laboratory to review the results of the third shipment of northern anchovy from California to Hawaii and to discuss future plans."
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            "content": "28 Mr. R. Shomura, Honolulu Laboratory Director, was among those invited to witness the first harvest operation of the Malaysian prawns at Fishfarms Hawaii in Laie, Oahu."
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            "content": "Honolulu Laboratory"
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            "content": "June 3 Scientists from the research vessel Hakuho Maru of the Ocean Research Institute, Uni- versity of Tokyo, visited the Honolulu Laboratory."
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            "content": "Tiburon Laboratory"
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            "content": "June 6"
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            "content": "- John Baxter, Department of Fish & Game, Menlo Park."
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            "content": "Herbert Frey, Department of Fish & Game, Long Beach."
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            "content": "Tom Jow, Department of Fish & Game, Menlo Park William Ver Brugge, San Francisco Tyee Club"
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            "content": "- Phillip Wesendunk, San Francisco Tyee Club"
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            "content": "- Bruce Wyatt, U.C. Davis Sea Grant"
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            "content": "Ben Remington, SWFC and Graham Mathes, NASO, Seattle, Washington"
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            "content": "La Jolla Laboratory"
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            "content": "June 4 Mr. Francis O'Meara, Deputy Director for Programs, NOAA"
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            "content": "4 - 5"
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            "content": "- Dr. Grant Beardsley, Southwest Fisheries Center, Miami"
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            "content": "6 Mr. George Reese, Fisheries Attache, Mexico -"
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            "content": "10 Dr. Jeffrey B. Graham, Smithsonian Tropical - Research Institute, Panama"
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            "content": "13-14 - Dr. Fred P. Thurberg, NMFS Laboratory, Milford, Connecticut"
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            "content": "20 Mr. Bob Holzinger, CF&G, Long Beach"
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            "content": "33"
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            "content": "June 21 Mr. Gordon D. Shadoan, NOAA, NASO, Seattle"
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            "content": "21- 24 - Messrs. Daniel Meyers, George Havenner, Dan Welley, Department of Commerce, Washington, D.C."
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            "content": "PERSONNEL ACTIONS"
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            "content": "June 4 Armstrong, Gordon, Biological Aid, - La Jolla Extension of Appointment"
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            "content": "Amick, Roy, Biological Aid, - La Jolla"
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            "content": "Foreman, Terry, Biological Aid, - La Jolla Extension of Appointment"
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            "content": "Thompson, John, Biological Aid,"
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            "content": "- La Jolla Extension of Appointment"
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            "content": "Orr, Henry, Office Draftsman, - La Jolla Extension of Appointment"
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            "content": "11 Ebisuzaki, Ms. Iris E. ,Clerk- Typist, Termination of Temporary Appointment"
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            "content": "- Honolulu"
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            "content": "17 Almazon, Peter, Summer Aid, - La Jolla Temporary Appointment"
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            "content": "Weiss, Cheryal, Summer Aid, Temporary Appointment"
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            "content": "- La Jolla"
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            "content": "18 Foreman, Terry, Biological Aid, Termination"
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            "content": "- Thompson, John, Biological Aid, Termination - La Jolla"
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            "content": "23 Bliss, Kenneth, Oceanographer,"
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            "content": "- La Jolla Promotion"
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            "content": "June 23 - Holzapfel, Eugene, Biological - La Jolla Technician, Promotion"
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            "content": "Engstrand, Barbara, Administra- - La Jolla tive Clerk, Promotion"
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            "content": "Huppert, Daniel, Industry - La Jolla Economist, Entered on Duty"
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            "content": "Woods, Maureen H. , Librarian, - Tiburon Conversion to Career-Conditional Part-Time Appointment"
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            "content": "Flerx, William, Biological Aid, - La Jolla Extension of Temporary Appointment"
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            "content": "Reilly, Stephen, Biological Aid, - La Jolla Termination"
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            "content": "HONORS AND AWARDS"
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            "content": "Dr. Elbert H. Ahlstrom, Senior Scientist at the La Jolla Lab- oratory, who entered Federal service as a fishery biologist with the sardine investigation in Stanford, California in 1939, received a personal letter of congratulations from NMFS Director Schoning, on completion of 35 years of government service. Mr. Schoning noted Dr. Ahlstrom's major scientific contribu- tions to fishery biology, his work as an Adjunct Professor of Oceanography at the Scripps Institution of Oceanography, and his recent receipt of the Department of Commerce Gold Medal."
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            "content": "Lt. Roger Hewitt, NOAA Officer at the La Jolla Laboratory, has been notified by the California Board of Registration for Pro- fessional Engineers that he has been awarded a certificate of registration to practice civil engineering in the State of California. The statement of proficiency is based on previous work, references, and an examination taken by Lt. Hewitt in February 1974."
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