| Estimated bycatch of marine mammals and turtles in the U.S. Atlantic pelagic longline fleet during 2004 - :4428 | National Marine Fisheries Service (NMFS)
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Estimated bycatch of marine mammals and turtles in the U.S. Atlantic pelagic longline fleet during 2004
  • Published Date:
    2005
Filetype[PDF-1.05 MB]


Details:
  • Corporate Authors:
    Southeast Fisheries Science Center (U.S.)
  • Description:
    "The U.S. Atlantic pelagic longline fleet operates throughout the Gulf of Mexico, along the entire U.S. Atlantic coast over the continental shelf and slope, and in distant water areas including the central North Atlantic and the Canadian Grand Banks. The Atlantic longline fleet is defined as a Category I fishery under the Marine Mammal Protection Act, and it is also the subject of management concerns under the Endangered Species Act due to interactions with leatherback and loggerhead turtles. Total bycatch of marine mammals and turtles in the longline fishery was estimated for 2004 u sing data from the pelagic longline fishery observer program and a mandatory fishery logbook reporting program. I applied a delta-lognormal approach to estimate region specific and total annual interactions with protected species for the fishery. During 2004, there were an estimated 1,35 9 (999 - 1,84 9 95%CI) interactions with leatherback turtles (Dermochelys coriacea) and 734 (466 - 1,15 8 95%CI) interactions with loggerhead turtles (Caretta caretta). The primary marine mammal species interacting with this fishery were pilot whales (Globicephala sp.) with an estimated 108 (50 - 232 95% CI) interactions and Risso's dolphin (Grampus griseus) with 49 (19 - 127 95% CI) interactions. Potential sources of bias and uncertainty in these bycatch estimates are discussed"--Abstract.

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