Experimental testing of acoustic alarms (pingers) to reduce bycatch of harbor porpoise, Phocoena phocoena, in the state of Washington

Authors
Gearin, P.J., Gosho, M.E., Laake, J.L., Cooke, L., Delong, R.L. & Hughes, K.M.
Year
Journal/Publisher Name
Journal of Cetacean Research and Management
Volume (Issue #)
2(1)
Page #s
1-9
Summary
Pingers do not reduce bycatch of harbor seals (Phoca vitulina) in the salmon and sturgeon gillnet fisheries in northern Washington state but do reduce bycatch of harbor porpoise (Phocoena phocoena). Pingers did not affect catch of target species, chinook salmon (Oncorhynchus tshawytscha) and sturgeon (Acipenser sp.).

Field Studies

Experimental testing of acoustic alarms (pingers) to reduce bycatch of harbor porpoise, Phocoena phocoena, in the state of Washington

Study Type
Field study in the wild
Location
Washington State
Target catch
Salmon & sturgeon
Effect on bycatch species
Did not reduce seal bycatch
Effect on target catch
Did not affect target catch
Bycatch species
Pinnipeds
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Experimental testing of acoustic alarms (pingers) to reduce bycatch of harbor porpoise, Phocoena phocoena, in the state of Washington

Study Type
Field study in the wild
Location
Washington State
Target catch
Salmon & sturgeon
Effect on bycatch species
Reduced harbor porpoise bycatch
Effect on target catch
Did not affect target catch
Bycatch species
Phocoena phocoena (Harbor porpoise)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets