Trap-net modification

Traps are modified to reduce the incidental capture of bycatch species. This can be done through measures such as reducing the trap opening size, bent-tunnel openings etc. (Favaro et al. 2012).

Displaying 1 - 10 of 14

Study Type: 

Field study in the wild

Location: 

Southeastern Australia

Target catch: 

Blue swimmer crab (P. armatus)

Effect on bycatch species: 

87% reduction in yellowfin bream, 84% reduction in undersized crab

Effect on target catch: 

No effect

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Florida, USA

Target catch: 

Stone crab (Menippe mercenaria)

Effect on bycatch species: 

Decreased catch of bycatch species and pre-recruit stone crabs

Effect on target catch: 

No effect

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Lagos, Epe Lagoons, Nigeria

Target catch: 

Bony fish

Effect on bycatch species: 

Reduced catch of undersized fish

Effect on target catch: 

Not reported

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Southeastern Australia

Target catch: 

giant mud crabs (Scylla serrata), blue swimmer crabs (Portunus armatus)

Effect on bycatch species: 

91-mm traps retained significantly fewer (by 42%) undersized P. armatus and A. australis. In the second experiment, fewer undersized S. serrata, P. armatus, and A. australis were retained in all larger meshed traps, and in all traps with escape gaps.

Effect on target catch: 

No effect

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Curacao

Target catch: 

Groupers and snappers

Effect on bycatch species: 

Short and tall gap traps reduced bycatch of bycatch fish by 74% and 80%, key herbivores by 58% and 50% and butterflyfish by 90% and 98%, respectively.

Effect on target catch: 

Catches of high-value fish were not affected

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Lake Opinicon, Canada

Target catch: 

sunfish, bullheads, yellow perch, rock bass, black crappie

Effect on bycatch species: 

60% of turtles escaped through large hole in net

Effect on target catch: 

77% of fish escaped through large hole in net

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Lake Opinicon, Canada

Target catch: 

sunfish, bullheads, yellow perch, rock bass, black crappie

Effect on bycatch species: 

All turtles escaped from the chimney opening

Effect on target catch: 

Retained 88% of target catch

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

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