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Toothed whale and shark depredation indicators: a case study from the Reunion Island and Sechelles pelagic longline fisheries

Study Type
Summary study
Location
Seychelles and Reunion Island
Target catch
Swordfish and tuna
Effect on bycatch species
N/A
Effect on target catch
Depredation rate was significantly higher for sharks but depredation impact was significantly higher for toothed whales
Bycatch species
Mammals
Sharks
Fishing Gear
Hooks-and-Lines

Toothed whale and shark depredation indicators: a case study from the Reunion Island and Sechelles pelagic longline fisheries

Study Type
Summary study
Location
Seychelles and Reunion Island
Target catch
Swordfish and tuna
Effect on bycatch species
N/A
Effect on target catch
Depredation rate was significantly higher for sharks but depredation impact was significantly higher for toothed whales
Bycatch species
Mammals
Sharks
Fishing Gear
Hooks-and-Lines

Toothed whale and shark depredation indicators: a case study from the Reunion Island and Sechelles pelagic longline fisheries

Study Type
Summary study
Location
Seychelles and Reunion Island
Target catch
Swordfish and tuna
Effect on bycatch species
N/A
Effect on target catch
Depredation rate was significantly higher for sharks but depredation impact was significantly higher for toothed whales
Bycatch species
Mammals
Sharks
Fishing Gear
Hooks-and-Lines

Setting baited hooks by stealth (underwater) can prevent the incidental mortality of albatrosses and petrels in pelagic longline fisheries

Study Type
Field study in the wild
Location
Uruaguay
Target catch
Tuna
Effect on bycatch species
Bait set 4 m below surface reduced mortality by 87% and by 100% when bait was set 10 m below the surface.
Effect on target catch
None
Bycatch species
Seabirds
Reduction technique
Sub-surface bait setting
Fishing Gear
Hooks-and-Lines

Setting baited hooks by stealth (underwater) can prevent the incidental mortality of albatrosses and petrels in pelagic longline fisheries

Study Type
Field study in the wild
Location
Uruaguay
Target catch
Tuna
Effect on bycatch species
Bait set 4 m below surface reduced mortality by 87% and by 100% when bait was set 10 m below the surface.
Effect on target catch
None
Bycatch species
Seabirds
Reduction technique
Sub-surface bait setting
Fishing Gear
Hooks-and-Lines

Setting baited hooks by stealth (underwater) can prevent the incidental mortality of albatrosses and petrels in pelagic longline fisheries

Study Type
Field study in the wild
Location
Uruaguay
Target catch
Tuna
Effect on bycatch species
Bait set 4 m below surface reduced mortality by 87% and by 100% when bait was set 10 m below the surface.
Effect on target catch
None
Bycatch species
Seabirds
Reduction technique
Sub-surface bait setting
Fishing Gear
Hooks-and-Lines

Spatiotemporal patterns of overlap between short-finned pilot whales and the U.S. pelagic longline fishery in the Mid-Atlantic Bight: an assessment to inform the management of fisheries bycatch

Study Type
Study in the lab
Location
US Atlantic
Target catch
Tuna and swordfish
Effect on bycatch species
Spatial management approach could be effective at reducing pilot whale bycatch in the pelagic longline fishery
Effect on target catch
N/A
Bycatch species
Globicephala spp. (Pilot whale)
Fishing Gear
Hooks-and-Lines
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