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Determining the safety range of electrical pulses for two benthic invertebrates: brown shrimp (Crangon crangon L.) and ragworm (Alitta virens S.)

Study Type
Study in the lab
Target catch
Shrimp tended to do a tail flip in response to some electric pulses and ragworm showed a squirming response independent of the frequency.
Effect on bycatch species
N/A
Effect on target catch
N/A
Bycatch species
Invertebrates
Reduction technique
Electromagnetic deterrents

Determining the safety range of electrical pulses for two benthic invertebrates: brown shrimp (Crangon crangon L.) and ragworm (Alitta virens S.)

Study Type
Study in the lab
Target catch
Shrimp tended to do a tail flip in response to some electric pulses and ragworm showed a squirming response independent of the frequency.
Effect on bycatch species
N/A
Effect on target catch
N/A
Bycatch species
Invertebrates
Reduction technique
Electromagnetic deterrents

Reducing bycatch in coral reef trap fisheries: escape gaps as a step towards sustainability

Study Type
Field study in the wild
Location
Curacao
Target catch
Groupers and snappers
Effect on bycatch species
Short and tall gap traps reduced bycatch of bycatch fish by 74% and 80%, key herbivores by 58% and 50% and butterflyfish by 90% and 98%, respectively.
Effect on target catch
Catches of high-value fish were not affected
Bycatch species
Bony Fishes
Reduction technique
Trap-net modification
Fishing Gear
Traps

Reducing bycatch in coral reef trap fisheries: escape gaps as a step towards sustainability

Study Type
Field study in the wild
Location
Curacao
Target catch
Groupers and snappers
Effect on bycatch species
Short and tall gap traps reduced bycatch of bycatch fish by 74% and 80%, key herbivores by 58% and 50% and butterflyfish by 90% and 98%, respectively.
Effect on target catch
Catches of high-value fish were not affected
Bycatch species
Bony Fishes
Reduction technique
Trap-net modification
Fishing Gear
Traps

Reducing bycatch in coral reef trap fisheries: escape gaps as a step towards sustainability

Study Type
Field study in the wild
Location
Curacao
Target catch
Groupers and snappers
Effect on bycatch species
Short and tall gap traps reduced bycatch of bycatch fish by 74% and 80%, key herbivores by 58% and 50% and butterflyfish by 90% and 98%, respectively.
Effect on target catch
Catches of high-value fish were not affected
Bycatch species
Bony Fishes
Reduction technique
Trap-net modification
Fishing Gear
Traps

Comparison of bycatch species captured during daytime and nighttime: preliminary results of longline experiments carried out in the Seychelles waters

Study Type
Summary study
Location
Seychelles
Target catch
swordfish and tuna
Effect on bycatch species
All marketable species were caught in the 150 m layer during day and night sets.
Effect on target catch
Differences in the species composition, quantity and depth of capture for bycatch species
Bycatch species
Bony Fishes
Sharks
Fishing Gear
Hooks-and-Lines

Comparison of bycatch species captured during daytime and nighttime: preliminary results of longline experiments carried out in the Seychelles waters

Study Type
Summary study
Location
Seychelles
Target catch
swordfish and tuna
Effect on bycatch species
All marketable species were caught in the 150 m layer during day and night sets.
Effect on target catch
Differences in the species composition, quantity and depth of capture for bycatch species
Bycatch species
Bony Fishes
Sharks
Fishing Gear
Hooks-and-Lines

Comparison of bycatch species captured during daytime and nighttime: preliminary results of longline experiments carried out in the Seychelles waters

Study Type
Summary study
Location
Seychelles
Target catch
swordfish and tuna
Effect on bycatch species
All marketable species were caught in the 150 m layer during day and night sets.
Effect on target catch
Differences in the species composition, quantity and depth of capture for bycatch species
Bycatch species
Bony Fishes
Sharks
Fishing Gear
Hooks-and-Lines

Integrated weight longlines with paired streamer lines - best practice to prevent seabird bycatch in demersal longline

Study Type
Field study in the wild
Location
Bering Sea
Target catch
Pacific cod
Effect on bycatch species
Integrated weight longlines paired with streamer lines eliminated surface foraging and shearwater catch by 97%; integrated weigh longlines reduced surface forager catch rates by 91% and unweighted longlines with paired streamer by 98%
Effect on target catch
Target catch rates were not affected
Bycatch species
Seabirds
Reduction technique
Bird-scaring devices
Sub-surface bait setting
Fishing Gear
Hooks-and-Lines

Integrated weight longlines with paired streamer lines - best practice to prevent seabird bycatch in demersal longline

Study Type
Field study in the wild
Location
Bering Sea
Target catch
Pacific cod
Effect on bycatch species
Integrated weight longlines paired with streamer lines eliminated surface foraging and shearwater catch by 97%; integrated weigh longlines reduced surface forager catch rates by 91% and unweighted longlines with paired streamer by 98%
Effect on target catch
Target catch rates were not affected
Bycatch species
Seabirds
Reduction technique
Bird-scaring devices
Sub-surface bait setting
Fishing Gear
Hooks-and-Lines

Integrated weight longlines with paired streamer lines - best practice to prevent seabird bycatch in demersal longline

Study Type
Field study in the wild
Location
Bering Sea
Target catch
Pacific cod
Effect on bycatch species
Integrated weight longlines paired with streamer lines eliminated surface foraging and shearwater catch by 97%; integrated weigh longlines reduced surface forager catch rates by 91% and unweighted longlines with paired streamer by 98%
Effect on target catch
Target catch rates were not affected
Bycatch species
Seabirds
Reduction technique
Bird-scaring devices
Sub-surface bait setting
Fishing Gear
Hooks-and-Lines

Integrated weight longlines with paired streamer lines - best practice to prevent seabird bycatch in demersal longline

Study Type
Field study in the wild
Location
Bering Sea
Target catch
Pacific cod
Effect on bycatch species
Integrated weight longlines paired with streamer lines eliminated surface foraging and shearwater catch by 97%; integrated weigh longlines reduced surface forager catch rates by 91% and unweighted longlines with paired streamer by 98%
Effect on target catch
Target catch rates were not affected
Bycatch species
Seabirds
Reduction technique
Bird-scaring devices
Sub-surface bait setting
Fishing Gear
Hooks-and-Lines

Taut vertical line and North Atlantic right whale flipper interaction: Experimental observations

Study Type
Field study in the wild
Location
Maine
Target catch
N/A
Effect on bycatch species
Interactions between the vertical line and the leading edge of a whale flipper model closest to the whale "body" resulted in significant damage to the flipper.
Effect on target catch
N/A
Bycatch species
Eubalaena glacialis (NA Right whale)
Reduction technique
High tension rope
Fishing Gear
Traps

Taut vertical line and North Atlantic right whale flipper interaction: Experimental observations

Study Type
Field study in the wild
Location
Maine
Target catch
N/A
Effect on bycatch species
Interactions between the vertical line and the leading edge of a whale flipper model closest to the whale "body" resulted in significant damage to the flipper.
Effect on target catch
N/A
Bycatch species
Eubalaena glacialis (NA Right whale)
Reduction technique
High tension rope
Fishing Gear
Traps

Taut vertical line and North Atlantic right whale flipper interaction: Experimental observations

Study Type
Field study in the wild
Location
Maine
Target catch
N/A
Effect on bycatch species
Interactions between the vertical line and the leading edge of a whale flipper model closest to the whale "body" resulted in significant damage to the flipper.
Effect on target catch
N/A
Bycatch species
Eubalaena glacialis (NA Right whale)
Reduction technique
High tension rope
Fishing Gear
Traps
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