Search The Database
| Location | Gear | Catch | Technique | Bycatch species | Type | Results |
|---|---|---|---|---|---|---|
Washington State |
Trout |
Acoustic deterrent devices
|
Pinnipeds | Field study in the wild | Predator sounds (killer whales) did not deter sea lion predation on a steelhead trout fishery in Washington. |
|
California |
Sablefish |
Acoustic deterrent devices
|
Large Cetaceans (maximum length > 7.5 meters) | Field study in the wild | Predator sounds (killer whales, Orcinus orca) caused gray whales (Eschrichtius robustus) to leave an area off the California coast. |
|
Alaska |
Hooks-and-Lines
|
Sablefish |
Acoustic deterrent devices
|
Large Cetaceans (maximum length > 7.5 meters) | Field study in the wild | Pyrotechnics did not deter killer whale (Orcinus orca) depredation from longlines in Alaska over time. Did not deter killer whales |
Washington State |
Trout |
Acoustic deterrent devices
|
Pinnipeds | Field study in the wild | Pyrotechnic seal bombs do not deter sea lions from locks in Washington, over time. |
|
Australia |
Gillnets
|
Trout |
Passive acoustic deterrents
|
Small Cetaceans (maximum length < 7.5 meters) | Field study in the wild | Passive acoustic deterrents in the form of chains of metallic beads and air-filled plastic tubing attached to gillnets in Australia did not reduce bycatch of two small cetaceans: the Atlantic bottlenose dolphin (Tursiops truncatus) and Spinner dolphin (Stenella longiristris). A sub-surface set gillnet (set 4.5 m below the surface) in Australia reduced cetacean catch rate [Atlantic bottlenose dolphin (Tursiops truncatus) and Spinner dolphin (Stenella longiristris)] when compared to a standard surface set net. The sub-surface net decreased total fish (teleost species: tuna, mackerel, billfish) and shark catch approximately 25%. |
Australia |
Gillnets
|
Multiple species |
Sub-surface sets (gillnets)
|
Small Cetaceans (maximum length < 7.5 meters) | Field study in the wild | Passive acoustic deterrents in the form of chains of metallic beads and air-filled plastic tubing attached to gillnets in Australia did not reduce bycatch of two small cetaceans: the Atlantic bottlenose dolphin (Tursiops truncatus) and Spinner dolphin (Stenella longiristris). A sub-surface set gillnet (set 4.5 m below the surface) in Australia reduced cetacean catch rate [Atlantic bottlenose dolphin (Tursiops truncatus) and Spinner dolphin (Stenella longiristris)] when compared to a standard surface set net. The sub-surface net decreased total fish (teleost species: tuna, mackerel, billfish) and shark catch approximately 25%. |
Alaska |
Hooks-and-Lines
|
Sablefish |
Acoustic deterrent devices
|
Large Cetaceans (maximum length > 7.5 meters) | Field study in the wild | Pyrotechnic cracker shells did not deter killer whales (Orcinus orca) from longlines in the Alaskan sablefish (Anoplopoma fimbria) fishery. |
Canada |
Non-specific
|
n/a |
Acoustic deterrent devices
|
Small Cetaceans (maximum length < 7.5 meters), Phocoena phocoena (Harbor porpoise) | Field study in the wild | Acoustic Harassment Devices (AHDs) were shown to exclude harbor porpoise (Phocoena phocoena) from bays in British Columbia. |
Alaska |
Salmon |
Acoustic deterrent devices
|
Large Cetaceans (maximum length > 7.5 meters) | Field study in the wild | For two weeks, transmission of predator sounds (killer whales) excluded beluga whales (Delphinapterus leucas) from preying on salmon smolts in Alaska's Kvichak River. |
|
California |
Gillnets
|
Swordfish & Shark |
Acoustic deterrent devices
|
Pinnipeds | Field study in the wild | 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, common thresher shark, and shortfin mako shark) and non-target species were not affected by pinger use. |