Flexible sorting grid

[Description pending]

Testing of an industry-designed bycatch reduction device to reduce the incidental catch of Pacific halibut in a groundfish bottom trawl fishery

Study Type: 

wild

Location: 

US west coast

Target catch: 

Flatfish

Effect on bycatch species: 

83.7% (weight) and 74.3% (number) of Pacific halibut were able to escape

Effect on target catch: 

93.3% of arrowtooth flounder, 99% of Dove sole, 96.9% of petrale sole, 96.9% of shortspine thronyhead and 90% of sablefish were retained

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Initial tests of a bycatch reduction device designed to improve trawl selectivity in the west coast limited entry groundfish bottom trawl directed flatfish fishery

Study Type: 

wild

Location: 

US west coast

Target catch: 

Flatfish

Effect on bycatch species: 

72.1% of rockfish, 96.5% of roundfishes and 93.7% of Pacific halibut were able to escape

Effect on target catch: 

85.1% of flatfish were retained

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Field Study 554

Study Type: 

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: 

No rays larger than 120 cm were caught when the grid was used

Effect on target catch: 

None reported

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Field Study 305

Study Type: 

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 capture of sharks larger than 100 cm with largest reductions occuring at lengths greater than 180 cm

Effect on target catch: 

None reported

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Field Study 303

Study Type: 

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: 

Redcuced catches rates from 26.2 (catch per 1000 shots) to 0.9

Effect on target catch: 

None reported

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Fishing Gear: 

ant

Study Type: 

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

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Study Type: 

wild

Location: 

Faroe Islands

Target catch: 

Blue whiting

Effect on bycatch species: 

Reduced bycatch

Effect on target catch: 

Decreased target catch by 1%

Reduction technique: 

Bycatch species: 

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