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Field Study 828
Taut vertical line and North Atlantic right whale flipper interaction: experimental observations
Impact of Costa Rican longline fishery on its bycatch of sharks, stingrays, bony fish and olive ridley turtles (Lepidochelys olivacea)
An observer program assessed the impact of the Costa Rican longline fishery on bycatch species from 1999 to 2010. Observers recorded species, sex, reproductive state, and dimensions of all animals captured. They also recorded information about individual longlines, including location, set and haul back times, hook type, hook number, bait used, target species, and total number of hooks.
Field Study
Field Study
Field Study
Field Study
Field Study
Field Study
Using pingers to reduce bycatch of small cetaceans in Peru's small-scale driftnet fishery
Acoustic pingers (Dukane Netmark 1000; frequency of 10-12 kHz and emit 300 ms tone every 4 sec with a source level range of 120-146 dB) were assessed to determine the effectiveness for reducing bycatch of dolphins and porpoises (common dolphins, dusky dolphins, bottlenose dolphins, Burmeister's porpoise, and pilot whales) by Peruvian small-scale driftnet fleets. Pingers were tested between April 2009 and August 2011. Twenty-two percent of the control nets captured small cetaceans and 16% of experimental nets captured small cetaceans.
Field Study 833
Field Study 833
Field Study 833
Field Study 833
Marine Mammal - Longline Bycatch Mitigation Workshop Abstracts
Updated Oct 15, 2013