Unanswered Forum Topics

Field investigation of rare-earth metal as a deterrent to spiny dogfish in the Pacific halibut fishery

Study Type
Field study in the wild
Location
Alaska
Target catch
Pacific halibut
Effect on bycatch species
Slightly reduced bycatch of spiny dogfish
Effect on target catch
Did not affect catch of halibut
Bycatch species
Sharks
Reduction technique
Electromagnetic deterrents
Fishing Gear
Hooks-and-Lines

Reducing elasmobranch bycatch: laboratory investigation of rare earth metal and magnetic deterrents with spiny dogfish and Pacific halibut

Study Type
Field study in the wild
Location
Laboratory study
Target catch
Pacific halibut
Effect on bycatch species
Mischmetal reduced the likelihood of an attack or consumption of bait by spiny dogfish.
Effect on target catch
Did not affect halibut
Bycatch species
Elasmobranchs
Reduction technique
Electromagnetic deterrents
Fishing Gear
Hooks-and-Lines

Reducing elasmobranch bycatch: laboratory investigation of rare earth metal and magnetic deterrents with spiny dogfish and Pacific halibut

Study Type
Field study in the wild
Location
Laboratory study
Target catch
Pacific halibut
Effect on bycatch species
Mischmetal reduced the likelihood of an attack or consumption of bait by spiny dogfish.
Effect on target catch
Did not affect halibut
Bycatch species
Elasmobranchs
Reduction technique
Electromagnetic deterrents
Fishing Gear
Hooks-and-Lines

Reducing elasmobranch bycatch: laboratory investigation of rare earth metal and magnetic deterrents with spiny dogfish and Pacific halibut

Study Type
Field study in the wild
Location
Laboratory study
Target catch
Pacific halibut
Effect on bycatch species
Mischmetal reduced the likelihood of an attack or consumption of bait by spiny dogfish.
Effect on target catch
Did not affect halibut
Bycatch species
Elasmobranchs
Reduction technique
Electromagnetic deterrents
Fishing Gear
Hooks-and-Lines

Acoustic harassment devices reduce seal interaction in the Baltic salmon-trap, net fishery

Study Type
Field study in the wild
Location
Baltic sea
Target catch
Salmon
Effect on bycatch species
Reduced depredation of salmon traps by grey seals (Halichoerus grypus)
Effect on target catch
Increased target catch and reduced seal damage to the catch
Bycatch species
Pinnipeds
Reduction technique
Acoustic deterrent devices
Fishing Gear
Traps

Acoustic harassment devices reduce seal interaction in the Baltic salmon-trap, net fishery

Study Type
Field study in the wild
Location
Baltic sea
Target catch
Salmon
Effect on bycatch species
Reduced depredation of salmon traps by grey seals (Halichoerus grypus)
Effect on target catch
Increased target catch and reduced seal damage to the catch
Bycatch species
Pinnipeds
Reduction technique
Acoustic deterrent devices
Fishing Gear
Traps

Acoustic harassment devices reduce seal interaction in the Baltic salmon-trap, net fishery

Study Type
Field study in the wild
Location
Baltic sea
Target catch
Salmon
Effect on bycatch species
Reduced depredation of salmon traps by grey seals (Halichoerus grypus)
Effect on target catch
Increased target catch and reduced seal damage to the catch
Bycatch species
Pinnipeds
Reduction technique
Acoustic deterrent devices
Fishing Gear
Traps

Do pingers reduce interactions between bottlenose dolphins and nets around the Balearic Islands?

Study Type
Field study in the wild
Location
Balearic Islands, Mediterranean Sea
Target catch
Mixed species
Effect on bycatch species
49% reduction in depredation rate by bottlenose dolphins (Tursiops truncatus)
Effect on target catch
Increased target catch (but not significant)
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Do pingers reduce interactions between bottlenose dolphins and nets around the Balearic Islands?

Study Type
Field study in the wild
Location
Balearic Islands, Mediterranean Sea
Target catch
Mixed species
Effect on bycatch species
49% reduction in depredation rate by bottlenose dolphins (Tursiops truncatus)
Effect on target catch
Increased target catch (but not significant)
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Do pingers reduce interactions between bottlenose dolphins and nets around the Balearic Islands?

Study Type
Field study in the wild
Location
Balearic Islands, Mediterranean Sea
Target catch
Mixed species
Effect on bycatch species
49% reduction in depredation rate by bottlenose dolphins (Tursiops truncatus)
Effect on target catch
Increased target catch (but not significant)
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Pingers as deterrents of bottlenose dolphins interacting with trammel nets

Study Type
Field study in the wild
Location
Mediterranean, Balearic Islands
Target catch
Red mullet
Effect on bycatch species
Reduced bottlenose dolphin (Tursiops truncatus) depredation
Effect on target catch
Increased target catch and reduced dolphin damage to the catch
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets

Pingers as deterrents of bottlenose dolphins interacting with trammel nets

Study Type
Field study in the wild
Location
Mediterranean, Balearic Islands
Target catch
Red mullet
Effect on bycatch species
Reduced bottlenose dolphin (Tursiops truncatus) depredation
Effect on target catch
Increased target catch and reduced dolphin damage to the catch
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Reduction technique
Acoustic deterrent devices
Fishing Gear
Gillnets
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