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Field Study 586

Study Type
Field study in the wild
Location
Mid Atlantic Bight
Target catch
Longfin squid
Effect on bycatch species
The square-mesh escape panel significantly reduced the average catches of scup and black sea bass. The panel also reduced catches of sublegal-size scup and black sea bass.
Effect on target catch
Longfin squid catch was reduced by 88% and 84% in numbers and weight respectively.
Bycatch species
Reduction technique
Fishing Gear

Field Study 586

Study Type
Field study in the wild
Location
Mid Atlantic Bight
Target catch
Longfin squid
Effect on bycatch species
The square-mesh escape panel significantly reduced the average catches of scup and black sea bass. The panel also reduced catches of sublegal-size scup and black sea bass.
Effect on target catch
Longfin squid catch was reduced by 88% and 84% in numbers and weight respectively.
Bycatch species
Reduction technique
Fishing Gear

Field Study 605

Study Type
Field study in the wild
Location
eastern Pacific Ocean
Target catch
Tuna
Effect on bycatch species
Significant differences between J and circle hook size 15 and between J and circle hook size 16 were found in the bycatch species group (all species grouped together). Chub mackerel bait caught the sharks.
Effect on target catch
No significant differences in catch rates of the target species were found between hook types. The highest catch rates for tunas were found on circle hooks size 15. Squid and jack mackerel bait had the highest catch rates for tunas.
Reduction technique
Fishing Gear

Field Study 605

Study Type
Field study in the wild
Location
eastern Pacific Ocean
Target catch
Tuna
Effect on bycatch species
Significant differences between J and circle hook size 15 and between J and circle hook size 16 were found in the bycatch species group (all species grouped together). Chub mackerel bait caught the sharks.
Effect on target catch
No significant differences in catch rates of the target species were found between hook types. The highest catch rates for tunas were found on circle hooks size 15. Squid and jack mackerel bait had the highest catch rates for tunas.
Reduction technique
Fishing Gear

Field Study 605

Study Type
Field study in the wild
Location
eastern Pacific Ocean
Target catch
Tuna
Effect on bycatch species
Significant differences between J and circle hook size 15 and between J and circle hook size 16 were found in the bycatch species group (all species grouped together). Chub mackerel bait caught the sharks.
Effect on target catch
No significant differences in catch rates of the target species were found between hook types. The highest catch rates for tunas were found on circle hooks size 15. Squid and jack mackerel bait had the highest catch rates for tunas.
Reduction technique
Fishing Gear

Field Study 605

Study Type
Field study in the wild
Location
eastern Pacific Ocean
Target catch
Tuna
Effect on bycatch species
Significant differences between J and circle hook size 15 and between J and circle hook size 16 were found in the bycatch species group (all species grouped together). Chub mackerel bait caught the sharks.
Effect on target catch
No significant differences in catch rates of the target species were found between hook types. The highest catch rates for tunas were found on circle hooks size 15. Squid and jack mackerel bait had the highest catch rates for tunas.
Reduction technique
Fishing Gear

Field Study 605

Study Type
Field study in the wild
Location
eastern Pacific Ocean
Target catch
Tuna
Effect on bycatch species
Significant differences between J and circle hook size 15 and between J and circle hook size 16 were found in the bycatch species group (all species grouped together). Chub mackerel bait caught the sharks.
Effect on target catch
No significant differences in catch rates of the target species were found between hook types. The highest catch rates for tunas were found on circle hooks size 15. Squid and jack mackerel bait had the highest catch rates for tunas.
Reduction technique
Fishing Gear

Field Study 609

Study Type
Field study in the wild
Location
Gulf of California
Target catch
Shrimp
Effect on bycatch species
The industrial version of the prototype reduced bycatch-to-shrimp ratios from 20-50% and the artisanal version also reduced the bycatch-to-shrimp ratios.
Effect on target catch
The industrial prototype increased target catch efficiency
Bycatch species
Reduction technique
Fishing Gear

Field Study 609

Study Type
Field study in the wild
Location
Gulf of California
Target catch
Shrimp
Effect on bycatch species
The industrial version of the prototype reduced bycatch-to-shrimp ratios from 20-50% and the artisanal version also reduced the bycatch-to-shrimp ratios.
Effect on target catch
The industrial prototype increased target catch efficiency
Bycatch species
Reduction technique
Fishing Gear

Field Study 609

Study Type
Field study in the wild
Location
Gulf of California
Target catch
Shrimp
Effect on bycatch species
The industrial version of the prototype reduced bycatch-to-shrimp ratios from 20-50% and the artisanal version also reduced the bycatch-to-shrimp ratios.
Effect on target catch
The industrial prototype increased target catch efficiency
Bycatch species
Reduction technique
Fishing Gear

Field Study

Study Type
Field study in the wild
Location
Eastern Australia
Target catch
Tuna
Effect on bycatch species
Mainlines with a loose configuration reached depth more slowly than tight configurations, allowing more time for seabirds to become incidentally hooked
Effect on target catch
None reported
Bycatch species
Reduction technique
Fishing Gear

Field Study

Study Type
Field study in the wild
Location
Eastern Australia
Target catch
Tuna
Effect on bycatch species
Mainlines with a loose configuration reached depth more slowly than tight configurations, allowing more time for seabirds to become incidentally hooked
Effect on target catch
None reported
Bycatch species
Reduction technique
Fishing Gear

Field Study

Study Type
Field study in the wild
Location
Eastern Australia
Target catch
Tuna
Effect on bycatch species
Mainlines with a loose configuration reached depth more slowly than tight configurations, allowing more time for seabirds to become incidentally hooked
Effect on target catch
None reported
Bycatch species
Reduction technique
Fishing Gear

Field Study 613

Study Type
Field study in the wild
Location
Eastern Australia
Target catch
Tuna
Effect on bycatch species
Live bait sank more quickly than dead bait, increasing the exposure of hooks to seabirds but the sink rates of individual live bait species were very variable. With respect to dead bait, those on the 160 g leaded swivel with a distance of 2 m leader len
Effect on target catch
None reported
Bycatch species
Reduction technique
Fishing Gear

Field Study 613

Study Type
Field study in the wild
Location
Eastern Australia
Target catch
Tuna
Effect on bycatch species
Live bait sank more quickly than dead bait, increasing the exposure of hooks to seabirds but the sink rates of individual live bait species were very variable. With respect to dead bait, those on the 160 g leaded swivel with a distance of 2 m leader len
Effect on target catch
None reported
Bycatch species
Reduction technique
Fishing Gear

Field Study 613

Study Type
Field study in the wild
Location
Eastern Australia
Target catch
Tuna
Effect on bycatch species
Live bait sank more quickly than dead bait, increasing the exposure of hooks to seabirds but the sink rates of individual live bait species were very variable. With respect to dead bait, those on the 160 g leaded swivel with a distance of 2 m leader len
Effect on target catch
None reported
Bycatch species
Reduction technique
Fishing Gear

Field Study 615

Study Type
Field study in the wild
Location
New South Wales Australia
Target catch
Prawns
Effect on bycatch species
The Nordmore-grid codend caught 50% fewer yellowfin bream than the radial escape section net and 55% fewer than the control net. Both trial codends significantly reduced the predicted mean weight (36% Nordmore-grid and 74.3% radial escape section) and n
Effect on target catch
The codend with a radial escape section and the simplified Nordmore-grid retained fewer school prawns by weight 11.5% and 4.6% resepectively, compared to the control net.
Bycatch species
Reduction technique
Fishing Gear