SS1.06 The Ecological Impacts of Pelagic Longline Fisheries
Date: Monday, June 10, 2002
Time: 4:45:00 PM
Location: Carson A
 
PolovinaJJ, Honolulu Laboratory/ NOAA, Honolulu, USA, jeffrey.polovina@noaa.gov
Kobayashi, D, R, Honolulu Laboratory/NOAA, Honolulu, USA, 
 
Reducing sea turtle by-catch in the Hawaii longline fishery - models and empirical results
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Loggerhead, olive ridley, leatherback, and green sea turtles are occasional caught in the Hawaii longline fishery. The Hawaii longline fishery has used shallow sets primarily to target swordfish and deep sets to target bigeye tuna. Observer and logbook data were used to model the impacts of time/area closure and gear depth changes on turtle by-catch. Since April 2001 the fishery has operated with a two month closure of a portion of the fishing ground and a prohibition of shallow sets. The model results predicted substantial reductions in incidental catches of turtle especially loggerheads due the elimination of shallow sets. Observer data to date confirm the model results. Predicted and observed changes in fish catches will also be presented.