Net sleeves

A buoyant net or "umbrella" that is attached to the vertical hook line above the baited hooks. When the mainline is hauled back during gear retrieval, the net sleeve slides down, covering the hooked fish. Net sleeves are used to prevent depredation and hooking non-target animals.

Field Study

Study Type: 

wild

Location: 

Australia

Target catch: 

Albacore tuna, yellowfin tuna, mahi mahi

Effect on bycatch species: 

No cetaceans were caught on experimental lines

Effect on target catch: 

No effect

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Field Study 733

Study Type: 

wild

Location: 

Falklands

Target catch: 

Patagonian toothfish

Effect on bycatch species: 

No bycatch and appeared to reduce depredation

Effect on target catch: 

Catch was reduced

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Field Study 730

Study Type: 

wild

Location: 

Chilean Patagonia

Target catch: 

Patagonian toothfish

Effect on bycatch species: 

Significantly reduced depredation and interactions with longlines

Effect on target catch: 

CPUE was higher

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Field Study 709

Study Type: 

wild

Location: 

Seychelles

Target catch: 

Tunas and swordfish

Effect on bycatch species: 

Sock DMD did not affect depredation. Shark depredation was higher

Effect on target catch: 

Sock DMD did not affect catch rates of target species

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