Active Forum Topics

Are circle hooks effective in reducing incidental captures of loggerhead sea turtles in a Mediterranean longline fishery?

Study Type
Field study in the wild
Location
Strait of Sicily
Target catch
Swordfish
Effect on bycatch species
Circle hooks reduced the incidental capture of immature sea turtles
Effect on target catch
Circle hooks did not affect catch rates or the size of the targeted catch
Bycatch species
Caretta caretta (Loggerhead turtle)
Reduction technique
Circle hooks
Fishing Gear
Hooks-and-Lines

Are circle hooks effective in reducing incidental captures of loggerhead sea turtles in a Mediterranean longline fishery?

Study Type
Field study in the wild
Location
Strait of Sicily
Target catch
Swordfish
Effect on bycatch species
Circle hooks reduced the incidental capture of immature sea turtles
Effect on target catch
Circle hooks did not affect catch rates or the size of the targeted catch
Bycatch species
Caretta caretta (Loggerhead turtle)
Reduction technique
Circle hooks
Fishing Gear
Hooks-and-Lines

Are circle hooks effective in reducing incidental captures of loggerhead sea turtles in a Mediterranean longline fishery?

Study Type
Field study in the wild
Location
Strait of Sicily
Target catch
Swordfish
Effect on bycatch species
Circle hooks reduced the incidental capture of immature sea turtles
Effect on target catch
Circle hooks did not affect catch rates or the size of the targeted catch
Bycatch species
Caretta caretta (Loggerhead turtle)
Reduction technique
Circle hooks
Fishing Gear
Hooks-and-Lines

ant

Study Type
Field study in the wild
Location
Northeastern Australia
Target catch
Bigeye and yellowfin tuna
Effect on bycatch species
Wire leaders had higher catch rates of sharks when compared to nylon monofilament leaders
Effect on target catch
Nylon monofilament leaders had higher catch rates of bigeye tunas when compared to wire leaders, but had no effect on yellowfin catch
Bycatch species
Sharks
Reduction technique
Alternative leader design
Fishing Gear
Hooks-and-Lines

ant

Study Type
Field study in the wild
Location
Northeastern Australia
Target catch
Bigeye and yellowfin tuna
Effect on bycatch species
Wire leaders had higher catch rates of sharks when compared to nylon monofilament leaders
Effect on target catch
Nylon monofilament leaders had higher catch rates of bigeye tunas when compared to wire leaders, but had no effect on yellowfin catch
Bycatch species
Sharks
Reduction technique
Alternative leader design
Fishing Gear
Hooks-and-Lines

ant

Study Type
Field study in the wild
Location
Northeastern Australia
Target catch
Bigeye and yellowfin tuna
Effect on bycatch species
Wire leaders had higher catch rates of sharks when compared to nylon monofilament leaders
Effect on target catch
Nylon monofilament leaders had higher catch rates of bigeye tunas when compared to wire leaders, but had no effect on yellowfin catch
Bycatch species
Sharks
Reduction technique
Alternative leader design
Fishing Gear
Hooks-and-Lines

ant

Study Type
Field study in the wild
Location
Australia
Target catch
Tiger prawn
Effect on bycatch species
reduced mean weight of small bycatch and mean number of seasnakes caught
Effect on target catch
no loss of tiger prawns
Bycatch species
Sea Snakes
Reduction technique
Excluder devices
Fishing Gear
Trawls

ant

Study Type
Field study in the wild
Location
Australia
Target catch
Tiger prawn
Effect on bycatch species
reduced mean weight of small bycatch and mean number of seasnakes caught
Effect on target catch
no loss of tiger prawns
Bycatch species
Sea Snakes
Reduction technique
Excluder devices
Fishing Gear
Trawls

ant

Study Type
Field study in the wild
Location
Australia
Target catch
Tiger prawn
Effect on bycatch species
reduced mean weight of small bycatch and mean number of seasnakes caught
Effect on target catch
no loss of tiger prawns
Bycatch species
Sea Snakes
Reduction technique
Excluder devices
Fishing Gear
Trawls

ant

Study Type
Field study in the wild
Location
Florida
Target catch
Blue crabs
Effect on bycatch species
The use of bycatch reduction devices would reduce incidental capture of diamondback terrapins
Effect on target catch
No effect on the size, sex or number of crabs caught
Bycatch species
Terrapins
Reduction technique
Trap guards (T-bars, otter guards)
Fishing Gear
Traps

ant

Study Type
Field study in the wild
Location
Florida
Target catch
Blue crabs
Effect on bycatch species
The use of bycatch reduction devices would reduce incidental capture of diamondback terrapins
Effect on target catch
No effect on the size, sex or number of crabs caught
Bycatch species
Terrapins
Reduction technique
Trap guards (T-bars, otter guards)
Fishing Gear
Traps

ant

Study Type
Field study in the wild
Location
Florida
Target catch
Blue crabs
Effect on bycatch species
The use of bycatch reduction devices would reduce incidental capture of diamondback terrapins
Effect on target catch
No effect on the size, sex or number of crabs caught
Bycatch species
Terrapins
Reduction technique
Trap guards (T-bars, otter guards)
Fishing Gear
Traps

ant

Study Type
Field study in the wild
Location
Western Australia
Target catch
red emperor, scarlet perch, spangled emperor, Rankin cod, blue spot emperor, rosy threadfin brea, flagfish, frypan snapper, red snapper and goldband snapper
Effect on bycatch species
Reduced dolphin bycatch by almost 50% and reduced bycatch of sea turtles, large sharks and large rays
Effect on target catch
Not reported
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Reduction technique
Excluder devices
Fishing Gear
Trawls

ant

Study Type
Field study in the wild
Location
Western Australia
Target catch
red emperor, scarlet perch, spangled emperor, Rankin cod, blue spot emperor, rosy threadfin brea, flagfish, frypan snapper, red snapper and goldband snapper
Effect on bycatch species
Reduced dolphin bycatch by almost 50% and reduced bycatch of sea turtles, large sharks and large rays
Effect on target catch
Not reported
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Reduction technique
Excluder devices
Fishing Gear
Trawls

ant

Study Type
Field study in the wild
Location
Western Australia
Target catch
red emperor, scarlet perch, spangled emperor, Rankin cod, blue spot emperor, rosy threadfin brea, flagfish, frypan snapper, red snapper and goldband snapper
Effect on bycatch species
Reduced dolphin bycatch by almost 50% and reduced bycatch of sea turtles, large sharks and large rays
Effect on target catch
Not reported
Bycatch species
Small Cetaceans (maximum length < 7.5 meters)
Reduction technique
Excluder devices
Fishing Gear
Trawls

ant

Study Type
Field study in the wild
Location
Norway
Target catch
Torsk (Brosme brosme), ling (Molva molva) and haddock (Melanogrammus aeglefinus)
Effect on bycatch species
Reduced incidental capture of seabirds, mostly fulmars
Effect on target catch
Increased target catch rates
Bycatch species
Seabirds
Reduction technique
Bird-scaring devices
Fishing Gear
Hooks-and-Lines

ant

Study Type
Field study in the wild
Location
Norway
Target catch
Torsk (Brosme brosme), ling (Molva molva) and haddock (Melanogrammus aeglefinus)
Effect on bycatch species
Reduced incidental capture of seabirds, mostly fulmars
Effect on target catch
Increased target catch rates
Bycatch species
Seabirds
Reduction technique
Bird-scaring devices
Fishing Gear
Hooks-and-Lines

ant

Study Type
Field study in the wild
Location
Norway
Target catch
Torsk (Brosme brosme), ling (Molva molva) and haddock (Melanogrammus aeglefinus)
Effect on bycatch species
Reduced incidental capture of seabirds, mostly fulmars
Effect on target catch
Increased target catch rates
Bycatch species
Seabirds
Reduction technique
Bird-scaring devices
Fishing Gear
Hooks-and-Lines

ant

Study Type
Field study in the wild
Location
Norway
Target catch
Torsk (Brosme brosme), ling (Molva molva) and haddock (Melanogrammus aeglefinus)
Effect on bycatch species
Reduced incidental capture of seabirds, mostly fulmars
Effect on target catch
Increased target catch rates
Bycatch species
Seabirds
Reduction technique
Sub-surface sets (gillnets)
Fishing Gear
Hooks-and-Lines

ant

Study Type
Field study in the wild
Location
Norway
Target catch
Torsk (Brosme brosme), ling (Molva molva) and haddock (Melanogrammus aeglefinus)
Effect on bycatch species
Reduced incidental capture of seabirds, mostly fulmars
Effect on target catch
Increased target catch rates
Bycatch species
Seabirds
Reduction technique
Sub-surface sets (gillnets)
Fishing Gear
Hooks-and-Lines
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