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Displaying 1 - 10 of 96

Location	Gear	Catch	Technique	Bycatch species	Type	Results
Washington, United States		Steelhead trout (Oncorhynchus mykiss)	Acoustic deterrent devices	Pinnipeds, Zalophus californianus (California sea lion)	Field study in the wild	Summary: Predator sounds (killer whales) did not deter sea lion (Zalophus californianus) predation on a steelhead trout (Oncorhynchus mykiss) fishery in Washington. Effect on Bycatch: Predator sounds did not deter predation Reference: Scordino, J. and Pfeifer, R., 1993 , Sea lion/steelhead conflict at the Ballad Locks, Seattle. National Marine Fisheries Service and Washington Department of Wildlife, Seattle, Washington.
California, United States		Sablefish (Anoplopoma fimbria)	Acoustic deterrent devices	Large Cetaceans (maximum length > 7.5 meters), Eschrichtius robustus (Gray whale)	Field study in the wild	Summary: Predator sounds (killer whales, Orcinus orca) caused gray whales (Eschrichtius robustus) to leave an area off the California (U.S.) coast. Effect on Bycatch: Whales left area Reference: Cummings, W.C. and Thompson, P.O., 1971 , Gray whales, Eschrichtius robustus, avoid the underwater sounds of killer whales, Orcinus orca.
Alaska, United States	Hooks and Lines	Sablefish (Anoplopoma fimbria)	Acoustic deterrent devices	Large Cetaceans (maximum length > 7.5 meters), Orcinus orca (Orca whale)	Field study in the wild	Summary: Pyrotechnics did not deter killer whale (Orcinus orca) depredation from longlines in Alaska (United States) over time. Effect on Bycatch: Did not deter killer whales Reference: Matkin, C., 1994 , The Killer Whales of Prince William Sound. Prince William Sound Books, Valdez, AK.
Washington State (United States)		Trout (Oncorhynchus mykiss)	Acoustic deterrent devices	Pinnipeds, Zalophus californianus (California sea lion)	Field study in the wild	Summary: Pyrotechnic seal bombs do not deter sea lions (Zalophus californianus) from locks in Washington (United States) over time. Effect on Bycatch: Did not deter sea lions Reference: National Marine Fisheries Service and Washington Department of Fish and Wildlife., 1995 , Environmental assessment on protecting winter-run wild steelhead from predation by California sea lions in the Lake Washington Ship Canal. NMFS/WDFW Environmental Assessment Report, Seattle, Washington.
Alaska, United States	Hooks and Lines	Sablefish, Anoplopoma fimbria	Acoustic deterrent devices	Large Cetaceans (maximum length > 7.5 meters), Orcinus orca (Orca whale)	Field study in the wild	Summary: Pyrotechnic cracker shells did not deter killer whales (Orcinus orca) from longlines in the Alaskan (U.S.) sablefish (Anoplopoma fimbria) fishery. Effect on Bycatch: Did not deter killer whales Reference: Dahlheim, M.E., 1988 , Killer whale (Orcinus orca) depredation on longline catches of sablefish (Anoplopoma fimbria) in Alaskan waters
Canada		N/A	Acoustic deterrent devices	Small Cetaceans (maximum length < 7.5 meters), Phocoena phocoena (Harbor porpoise)	Field study in the wild	Summary: Acoustic Harassment Devices (AHDs) were shown to exclude harbor porpoise (Phocoena phocoena) from bays in British Columbia, Canada. Effect on Bycatch: No porpoises were sighted within 200 m of AHD Reference: Olesiuk, P., L.M. Nichol, M.J. Snowden, and J.K.B. Ford., 2002 , Effect of the sound generated by an acoustic harassment device on the relative abundance and distribution of harbor porpoises (Phocoena phocoena) in Retreat Passage, British Columbia
Alaska, United States		Salmon (Oncorhynchus nerka)	Acoustic deterrent devices	Large Cetaceans (maximum length > 7.5 meters), Delphinapterus leucas (Beluga whale)	Field study in the wild	Summary: For two weeks, transmission of predator sounds (killer whales, Orcinus orca) excluded beluga whales (Delphinapterus leucas) from preying on salmon (Oncorhynchus nerka) smolts in Alaska's Kvichak River (United States). Effect on Bycatch: Excluded whales Reference: Fish, J.F. and Vania, J.S., 1971 , Killer whale, Orcinus orca, sound repel white whales, Delphinapterus leucas
California, United States	Gillnets and Entangling Nets	Broadbill swordfish (Xiphias gladius), common thresher shark (Alopias vulpinus), and shortfin mako shark (Isurus oxyrinchus	Acoustic deterrent devices	Pinnipeds, Zalophus californianus (California sea lion)	Field study in the wild	Summary: Pingers reduce bycatch of California sea lions (Zalophus californianus) and short-beaked common dolphins (Delphinus delphis) in the California (U.S.) drift gillnet fishery for swordfish and sharks. Catch of target fish species (broadbill swordfish (Xiphias gladius), common thresher shark (Alopias vulpinus), and shortfin mako shark (Isurus oxyrinchus)) and non-target species were not affected by pinger use. Effect on Bycatch: Reduced bycatch Reference: Barlow, J. and Cameron, G.A., 2003 , Field Experiments Show That Acoustic Pingers Reduce Marine Mammal Bycatch in the California Drift Gill Net Fishery
California, United States	Gillnets and Entangling Nets	Broadbill swordfish (Xiphias gladius), common thresher shark (Alopias vulpinus), and shortfin mako shark (Isurus oxyrinchus	Acoustic deterrent devices	Small Cetaceans (maximum length < 7.5 meters), Delphinus delphis (Short-beaked common dolphin)	Field study in the wild	Summary: Pingers reduce bycatch of California sea lions (Zalophus californianus) and short-beaked common dolphins (Delphinus delphis) in the California (U.S.) drift gillnet fishery for swordfish and sharks. Catch of target fish species (broadbill swordfish (Xiphias gladius), common thresher shark (Alopias vulpinus), and shortfin mako shark (Isurus oxyrinchus)) and non-target species were not affected by pinger use. Effect on Bycatch: Reduced bycatch Reference: Barlow, J. and Cameron, G.A., 2003 , Field Experiments Show That Acoustic Pingers Reduce Marine Mammal Bycatch in the California Drift Gill Net Fishery
Cabo San Antonio, Argentina	Gillnets and Entangling Nets	Sea trout, croaker, letherjack, Patagonian smooth hound	Acoustic deterrent devices	Small Cetaceans (maximum length < 7.5 meters), Pontoporia blainvillei (Franciscana dolphin)	Field study in the wild	Summary: Pingers are effective in reducing the bycatch of Franciscana dolphins (Pontoporia blainvillei) but increase interactions between fishing gear and South American sea lions (Otaria byronia) in an Argentinian bottom gillnet fishery. Effect on Bycatch: Reduced dolphin bycatch Reference: Bordino, P., Kraus, S., Albareda, D., Fazio, A., Palmerio, A., Mendez, M. & Botta, S., 2002 , Reducing incidental mortality of Franciscana dolphin Pontoporia blainvillei with acoustic warning devices attached to fishing nets.

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