Trap guards (T-bars, otter guards)

Welded bars, netting or bungee cords placed in pot traps to prevent pinnipeds, small cetaceans, or otters from entering them and preying on the target catch (http://bycatch.org/articles/interactions-between-indian-river-lagoon-blu...). This technique can also be used to reduce the mortality of bycatch species that may become trapped and drown.

Displaying 1 - 7 of 7

Study Type: 

Field study in the wild

Location: 

New Jersey

Target catch: 

Crabs

Effect on bycatch species: 

Modified traps with a 4.5X10 cm frame caught no terrapins compared to the 22 caught in the unmodified traps

Effect on target catch: 

Crab catch rates were 9% higher when the 4.5X10 excluder design was used and crabs were of similar sizes in the two traps (modified and unmodified)

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

New Jersey

Target catch: 

Crabs

Effect on bycatch species: 

Modified traps with a 5X10 cm rectangular frame caught 2 out 15 terrapins during 1992 and 5 out of 51 terrapins during 1995 (remainder caught by unmodified traps)

Effect on target catch: 

Crab catch rates were 11% higher when the 5x10 cm excluder design was used in 1994 (multiple sites) and 49% higher in 1995 (single site)

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Florida

Target catch: 

Blue crabs

Effect on bycatch species: 

The use of bycatch reduction devices would reduce incidental capture of diamondback terrapins

Effect on target catch: 

No effect on the size, sex or number of crabs caught

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

Field study in the wild

Location: 

Australia

Target catch: 

Lobster

Effect on target catch: 

Do not reduce target catch in shallow water; varied effects in deep water

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Bycatch species: 

Reduction technique: 

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