Field Experiments Show That Acoustic Pingers Reduce Marine Mammal Bycatch in the California Drift Gill Net Fishery

Authors
Barlow, J. and Cameron, G.A.
Year
Journal/Publisher Name
Marine Mammal Science
Volume (Issue #)
19
Page #s
265-283
Contact information
Jay Barlo: jay.barlow@noaa.gov
Summary

Pingers reduce bycatch of California sea lions (Zalophus californianus) and short-beaked common dolphins (Delphinus delphis) in the California 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.

Link
https://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1235&context=usdeptc…

Field Studies

Field Experiments Show That Acoustic Pingers Reduce Marine Mammal Bycatch in the California Drift Gill Net Fishery

Study Type
Field study in the wild
Location
California, United States
Target catch
Broadbill swordfish (Xiphias gladius), common thresher shark (Alopias vulpinus), and shortfin mako shark (Isurus oxyrinchus
Effect on bycatch species
Reduced bycatch
Effect on target catch
Did not affect catch
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Delphinus delphis (Short-beaked common dolphin)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets and Entangling Nets

Field Experiments Show That Acoustic Pingers Reduce Marine Mammal Bycatch in the California Drift Gill Net Fishery

Study Type
Field study in the wild
Location
California, United States
Target catch
Broadbill swordfish (Xiphias gladius), common thresher shark (Alopias vulpinus), and shortfin mako shark (Isurus oxyrinchus
Effect on bycatch species
Reduced bycatch
Effect on target catch
Did not affect catch
Bycatch species
Pinnipeds
Zalophus californianus (California sea lion)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets and Entangling Nets