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Experiment to Evaluate Gear Modification on Rates of Sea Turtle Bycatch in the Swordfish Longline Fishery in the Azores Phase 2

Study Type
Field study in the wild
Location
Azores
Target catch
Swordfish and blue shark
Effect on bycatch species
Did not reduce bycatch; reduced rate of throat hooking
Effect on target catch
Increased blue shark catch when compared to J hooks
Reduction technique
Fishing Gear

Experiment to Evaluate Gear Modification on Rates of Sea Turtle Bycatch in the Swordfish Longline Fishery in the Azores Phase 2

Study Type
Field study in the wild
Location
Azores
Target catch
Swordfish and blue shark
Effect on bycatch species
Did not reduce bycatch; reduced rate of throat hooking
Effect on target catch
Increased blue shark catch when compared to J hooks
Reduction technique
Fishing Gear

Experiment to Evaluate Gear Modification on Rates of Sea Turtle Bycatch in the Swordfish Longline Fishery in the Azores Phase 2

Study Type
Field study in the wild
Location
Azores
Target catch
Swordfish and blue shark
Effect on bycatch species
Did not reduce bycatch; reduced rate of throat hooking
Effect on target catch
Increased blue shark catch when compared to J hooks
Reduction technique
Fishing Gear

Experiment to Evaluate Gear Modification on Rates of Sea Turtle Bycatch in the Swordfish Longline Fishery in the Azores Phase 4

Study Type
Field study in the wild
Location
Azores
Target catch
Swordfish and blue shark
Effect on bycatch species
Non-offset 16/0 and 18/0 circle hooks caught fewer turtles than Japanese tuna hook. Non-offset 18/0 circle hooks caught fewer turtles than non-offset 16/0
Effect on target catch
There was no significant difference in the number of blue sharks caught on non-offset 16/0 and 18/0 circle hooks .
Reduction technique
Fishing Gear

Experiment to Evaluate Gear Modification on Rates of Sea Turtle Bycatch in the Swordfish Longline Fishery in the Azores Phase 4

Study Type
Field study in the wild
Location
Azores
Target catch
Swordfish and blue shark
Effect on bycatch species
Non-offset 16/0 and 18/0 circle hooks caught fewer turtles than Japanese tuna hook. Non-offset 18/0 circle hooks caught fewer turtles than non-offset 16/0
Effect on target catch
There was no significant difference in the number of blue sharks caught on non-offset 16/0 and 18/0 circle hooks .
Reduction technique
Fishing Gear

Experiment to Evaluate Gear Modification on Rates of Sea Turtle Bycatch in the Swordfish Longline Fishery in the Azores Phase 4

Study Type
Field study in the wild
Location
Azores
Target catch
Swordfish and blue shark
Effect on bycatch species
Non-offset 16/0 and 18/0 circle hooks caught fewer turtles than Japanese tuna hook. Non-offset 18/0 circle hooks caught fewer turtles than non-offset 16/0
Effect on target catch
There was no significant difference in the number of blue sharks caught on non-offset 16/0 and 18/0 circle hooks .
Reduction technique
Fishing Gear