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Development and Evaluation of Reduced Breaking Strength Rope to Reduce Large Whale Entanglement Severity

Study Type
Field study in the wild
Location
New England
Target catch
Lobster, Whelk, Black Sea Bass
Effect on bycatch species
Indeterminate given rarity of encounters
Effect on target catch
None
Bycatch species
Large Cetaceans (maximum length > 7.5 meters)
Reduction technique
Weak links/ropes
Fishing Gear
Pots

Development and Evaluation of Reduced Breaking Strength Rope to Reduce Large Whale Entanglement Severity

Study Type
Field study in the wild
Location
New England
Target catch
Lobster, Whelk, Black Sea Bass
Effect on bycatch species
Indeterminate given rarity of encounters
Effect on target catch
None
Bycatch species
Large Cetaceans (maximum length > 7.5 meters)
Reduction technique
Weak links/ropes
Fishing Gear
Pots

Development and Evaluation of Reduced Breaking Strength Rope to Reduce Large Whale Entanglement Severity

Study Type
Field study in the wild
Location
New England
Target catch
Lobster, Whelk, Black Sea Bass
Effect on bycatch species
Indeterminate given rarity of encounters
Effect on target catch
None
Bycatch species
Large Cetaceans (maximum length > 7.5 meters)
Reduction technique
Weak links/ropes
Fishing Gear
Pots

Bottom trawl catch comparison in the Mediterranean Sea: Flexible Turtle Excluder Device (TED) vs traditional gear

Study Type
Field study in the wild
Location
Mediterranean Sea
Target catch
Demersal fish
Effect on bycatch species
Unknown (no turtles captured in either control or experimental trawls)
Effect on target catch
No significant loss of commercial weight of fish, similar rates of capture without any significant loss of sizes (with the exception of anglerfish), significant reduction of debris in the codend
Bycatch species
Caretta caretta (Loggerhead turtle)
Reduction technique
Excluder devices
Fishing Gear
Trawls

Bottom trawl catch comparison in the Mediterranean Sea: Flexible Turtle Excluder Device (TED) vs traditional gear

Study Type
Field study in the wild
Location
Mediterranean Sea
Target catch
Demersal fish
Effect on bycatch species
Unknown (no turtles captured in either control or experimental trawls)
Effect on target catch
No significant loss of commercial weight of fish, similar rates of capture without any significant loss of sizes (with the exception of anglerfish), significant reduction of debris in the codend
Bycatch species
Caretta caretta (Loggerhead turtle)
Reduction technique
Excluder devices
Fishing Gear
Trawls

Bottom trawl catch comparison in the Mediterranean Sea: Flexible Turtle Excluder Device (TED) vs traditional gear

Study Type
Field study in the wild
Location
Mediterranean Sea
Target catch
Demersal fish
Effect on bycatch species
Unknown (no turtles captured in either control or experimental trawls)
Effect on target catch
No significant loss of commercial weight of fish, similar rates of capture without any significant loss of sizes (with the exception of anglerfish), significant reduction of debris in the codend
Bycatch species
Caretta caretta (Loggerhead turtle)
Reduction technique
Excluder devices
Fishing Gear
Trawls

The effect of artificial illumination on Chinook salmon behavior and their escapement out of a midwater trawl bycatch reduction device

Study Type
Field study in the wild
Location
Newport, Oregon, USA
Target catch
Pacific hake (Merluccius productus)
Effect on bycatch species
Artificial illumination can influence where Chinook salmon exit out of a bycatch reduction device, and can be used to enhance overall escapement.
Effect on target catch
Not tested
Bycatch species
Oncorhynchus tshawytscha (Chinook salmon)
Reduction technique
Visual deterrents
Fishing Gear
Trawls

The effect of artificial illumination on Chinook salmon behavior and their escapement out of a midwater trawl bycatch reduction device

Study Type
Field study in the wild
Location
Newport, Oregon, USA
Target catch
Pacific hake (Merluccius productus)
Effect on bycatch species
Artificial illumination can influence where Chinook salmon exit out of a bycatch reduction device, and can be used to enhance overall escapement.
Effect on target catch
Not tested
Bycatch species
Oncorhynchus tshawytscha (Chinook salmon)
Reduction technique
Visual deterrents
Fishing Gear
Trawls

The effect of artificial illumination on Chinook salmon behavior and their escapement out of a midwater trawl bycatch reduction device

Study Type
Field study in the wild
Location
Newport, Oregon, USA
Target catch
Pacific hake (Merluccius productus)
Effect on bycatch species
Artificial illumination can influence where Chinook salmon exit out of a bycatch reduction device, and can be used to enhance overall escapement.
Effect on target catch
Not tested
Bycatch species
Oncorhynchus tshawytscha (Chinook salmon)
Reduction technique
Visual deterrents
Fishing Gear
Trawls

The effectiveness of a modified turtle excluder device (TED) in reducing the bycatch of elasmobranchs in the Atlantic seabob (Xiphopenaeus kroyeri) industrial trawl fishery of Guyana

Study Type
Field study in the wild
Location
Guyana
Target catch
Seabob shrimp (Xiphopenaeus kroyeri)
Effect on bycatch species
40% decline in elasmobranch catch rate; mean size of elasmobranch captured reduced by 6.3%
Effect on target catch
Not tested
Bycatch species
Elasmobranchs
Reduction technique
Excluder devices
Fishing Gear
Trawls

The effectiveness of a modified turtle excluder device (TED) in reducing the bycatch of elasmobranchs in the Atlantic seabob (Xiphopenaeus kroyeri) industrial trawl fishery of Guyana

Study Type
Field study in the wild
Location
Guyana
Target catch
Seabob shrimp (Xiphopenaeus kroyeri)
Effect on bycatch species
40% decline in elasmobranch catch rate; mean size of elasmobranch captured reduced by 6.3%
Effect on target catch
Not tested
Bycatch species
Elasmobranchs
Reduction technique
Excluder devices
Fishing Gear
Trawls

The effectiveness of a modified turtle excluder device (TED) in reducing the bycatch of elasmobranchs in the Atlantic seabob (Xiphopenaeus kroyeri) industrial trawl fishery of Guyana

Study Type
Field study in the wild
Location
Guyana
Target catch
Seabob shrimp (Xiphopenaeus kroyeri)
Effect on bycatch species
40% decline in elasmobranch catch rate; mean size of elasmobranch captured reduced by 6.3%
Effect on target catch
Not tested
Bycatch species
Elasmobranchs
Reduction technique
Excluder devices
Fishing Gear
Trawls

Factors affecting elasmobranch escape from turtle excluder devices (TEDs) in a tropical penaeid-trawl fishery.

Study Type
Field study in the wild
Location
Northern Australia
Target catch
Tiger prawn (Penaeus semisulcatus and P. esculentus) and endeavor prawn (Metapenaus endeavouri and M. ensus)
Effect on bycatch species
TEDs facilitated the escape of large elasmobranchs, with bar spacing and TED orientation acting as important design factors affecting escape.
Effect on target catch
Not tested
Bycatch species
Elasmobranchs
Reduction technique
Excluder devices
Fishing Gear
Trawls

Factors affecting elasmobranch escape from turtle excluder devices (TEDs) in a tropical penaeid-trawl fishery.

Study Type
Field study in the wild
Location
Northern Australia
Target catch
Tiger prawn (Penaeus semisulcatus and P. esculentus) and endeavor prawn (Metapenaus endeavouri and M. ensus)
Effect on bycatch species
TEDs facilitated the escape of large elasmobranchs, with bar spacing and TED orientation acting as important design factors affecting escape.
Effect on target catch
Not tested
Bycatch species
Elasmobranchs
Reduction technique
Excluder devices
Fishing Gear
Trawls

Factors affecting elasmobranch escape from turtle excluder devices (TEDs) in a tropical penaeid-trawl fishery.

Study Type
Field study in the wild
Location
Northern Australia
Target catch
Tiger prawn (Penaeus semisulcatus and P. esculentus) and endeavor prawn (Metapenaus endeavouri and M. ensus)
Effect on bycatch species
TEDs facilitated the escape of large elasmobranchs, with bar spacing and TED orientation acting as important design factors affecting escape.
Effect on target catch
Not tested
Bycatch species
Elasmobranchs
Reduction technique
Excluder devices
Fishing Gear
Trawls

Effects of Bait Type and Conspecific Attraction in Diamondback Terrapin (Malaclemys terrapin) Bycatch.

Study Type
Study in the lab
Location
Kiwah Island, South Carolina
Target catch
Blue crab (Callinectes sapidus)
Effect on bycatch species
Consumable bait had the greatest effect on terrapin entrapment relative to the presence of con-specifics and non-baited crab pots
Effect on target catch
Not tested
Bycatch species
Terrapins
Reduction technique
Alternative bait
Fishing Gear
Traps

Effects of Bait Type and Conspecific Attraction in Diamondback Terrapin (Malaclemys terrapin) Bycatch.

Study Type
Study in the lab
Location
Kiwah Island, South Carolina
Target catch
Blue crab (Callinectes sapidus)
Effect on bycatch species
Consumable bait had the greatest effect on terrapin entrapment relative to the presence of con-specifics and non-baited crab pots
Effect on target catch
Not tested
Bycatch species
Terrapins
Reduction technique
Alternative bait
Fishing Gear
Traps

Effects of Bait Type and Conspecific Attraction in Diamondback Terrapin (Malaclemys terrapin) Bycatch.

Study Type
Study in the lab
Location
Kiwah Island, South Carolina
Target catch
Blue crab (Callinectes sapidus)
Effect on bycatch species
Consumable bait had the greatest effect on terrapin entrapment relative to the presence of con-specifics and non-baited crab pots
Effect on target catch
Not tested
Bycatch species
Terrapins
Reduction technique
Alternative bait
Fishing Gear
Traps

Using automated video analysis to study fish escapement through escape panels in active fishing gears: Application to the effect of net colour.

Study Type
Field study in the wild
Target catch
Demersal fish
Effect on bycatch species
60% of all fish escaped through the white panel
Effect on target catch
Not tested
Bycatch species
Bony Fishes
Reduction technique
Excluder devices
Fishing Gear
Trawls
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