Sub-surface sets (gillnets)

Methods that reduce bycatch by eliminating gear sets at the ocean surface. These include devices such as setting chutes that place sets below the ocean surface in longline operations where they are less prone to seabird predation, and setting gillnets below the sea surface to reduce entanglement rates of small cetaceans.

Displaying 1 - 9 of 9

Study Type: 

Field study in the wild

Location: 

Izmir Bay, Turkey

Target catch: 

Prawns

Effect on bycatch species: 

Trial 1, experimental net caught 44% fewer crabs and mantis shrimp and 49% fewer murex than control net. Trial 2, experimental net 1 caught 66% fewer crabs, 27% fewer mantis shrimp and 32% fewer murex, while experiemnetal net 2 caught 51% fewer crabs,

Effect on target catch: 

Trial 1, experimental net 1 caught 17% fewer prawns than the control net. Trial 2, experimental net 2 caught 2% fewer prawns than the control net.

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Fishing Gear: 

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

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