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Field Study 324

Study Type
Field study in the wild
Location
Northern Australia
Target catch
Prawns
Effect on bycatch species
Upward facing TED's reduced large sponge catches by 81.6%
Effect on target catch
Reduced the proportion of soft and damaged prawns by 35.8% and reduced catches of tiger prawns by 6.3%
Bycatch species
Invertebrates
Reduction technique
Excluder devices
Fishing Gear
Trawls

Field Study 325

Study Type
Field study in the wild
Location
Northern Australia
Target catch
Prawns
Effect on bycatch species
Downward facing TEDs reduced large sponge catches by 95.9%
Effect on target catch
Reduced the proportion of soft and damaged prawns by 63.2% and reduced catches of tiger prawns by 6.3%
Bycatch species
Invertebrates
Reduction technique
Excluder devices
Fishing Gear
Trawls

Field Study 325

Study Type
Field study in the wild
Location
Northern Australia
Target catch
Prawns
Effect on bycatch species
Downward facing TEDs reduced large sponge catches by 95.9%
Effect on target catch
Reduced the proportion of soft and damaged prawns by 63.2% and reduced catches of tiger prawns by 6.3%
Bycatch species
Invertebrates
Reduction technique
Excluder devices
Fishing Gear
Trawls

Field Study 325

Study Type
Field study in the wild
Location
Northern Australia
Target catch
Prawns
Effect on bycatch species
Downward facing TEDs reduced large sponge catches by 95.9%
Effect on target catch
Reduced the proportion of soft and damaged prawns by 63.2% and reduced catches of tiger prawns by 6.3%
Bycatch species
Invertebrates
Reduction technique
Excluder devices
Fishing Gear
Trawls

Field Study 327

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)
Bycatch species
Terrapins
Reduction technique
Trap guards (T-bars, otter guards)
Fishing Gear
Traps

Field Study 327

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)
Bycatch species
Terrapins
Reduction technique
Trap guards (T-bars, otter guards)
Fishing Gear
Traps

Field Study 327

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)
Bycatch species
Terrapins
Reduction technique
Trap guards (T-bars, otter guards)
Fishing Gear
Traps

Field Study 335

Study Type
Field study in the wild
Location
Chesapeake Bay, Virginia
Target catch
Finfish, including: Atlantic tread herring (Opisthonema oglinum), harvestfish (Peprilus alepidotus), butterfish (Peprilus triacanthus), Atlantic croaker (Micropogonias undulatus) and weakfish (Cynoscion regalis)
Effect on bycatch species
Significant reduction of sea turtles bycatch
Effect on target catch
No difference for four species, increased catch of a fifth
Bycatch species
Sea Turtles
Reduction technique
Alternative leader design
Fishing Gear
Traps

Field Study 335

Study Type
Field study in the wild
Location
Chesapeake Bay, Virginia
Target catch
Finfish, including: Atlantic tread herring (Opisthonema oglinum), harvestfish (Peprilus alepidotus), butterfish (Peprilus triacanthus), Atlantic croaker (Micropogonias undulatus) and weakfish (Cynoscion regalis)
Effect on bycatch species
Significant reduction of sea turtles bycatch
Effect on target catch
No difference for four species, increased catch of a fifth
Bycatch species
Sea Turtles
Reduction technique
Alternative leader design
Fishing Gear
Traps

Field Study 335

Study Type
Field study in the wild
Location
Chesapeake Bay, Virginia
Target catch
Finfish, including: Atlantic tread herring (Opisthonema oglinum), harvestfish (Peprilus alepidotus), butterfish (Peprilus triacanthus), Atlantic croaker (Micropogonias undulatus) and weakfish (Cynoscion regalis)
Effect on bycatch species
Significant reduction of sea turtles bycatch
Effect on target catch
No difference for four species, increased catch of a fifth
Bycatch species
Sea Turtles
Reduction technique
Alternative leader design
Fishing Gear
Traps

Field Study 340

Study Type
Field study in the wild
Location
US Atlantic
Target catch
Tuna and swordfish
Effect on bycatch species
Pelagic stingrays had higher catch rates on J-style hooks and survival rates of dolphinfish and escolar were higher when circle hooks were used (fall and spring respectively)
Effect on target catch
Catch rates of yellowfin tuna caught in the fall were higher on circle hooks. Yellowfin tuna were caught four times as often in the mouth when circle hooks were used in the fall.
Bycatch species
Bony Fishes
Reduction technique
Circle hooks
Fishing Gear
Hooks-and-Lines

Field Study 340

Study Type
Field study in the wild
Location
US Atlantic
Target catch
Tuna and swordfish
Effect on bycatch species
Pelagic stingrays had higher catch rates on J-style hooks and survival rates of dolphinfish and escolar were higher when circle hooks were used (fall and spring respectively)
Effect on target catch
Catch rates of yellowfin tuna caught in the fall were higher on circle hooks. Yellowfin tuna were caught four times as often in the mouth when circle hooks were used in the fall.
Bycatch species
Bony Fishes
Reduction technique
Circle hooks
Fishing Gear
Hooks-and-Lines
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