Field Study 723


Western North Atlantic

Target catch: 

Swordfish and tuna

Study Type: 

Field study in the wild

Effect on target catch: 

Circle hooks combined with mackerel bait increased swordfish catch by weight. With squid, decreased swordfish catch, increased bluefin and albacore tuna catch. Mackerel bait decreased bigeye and albacore tuna catch.

Effect on bycatch species: 

Circle hooks decreased loggerhead and leatherback catch; even more effective for loggerheads when combined with mackerel bait

Reduction technique: 

Bycatch species: 

Fishing Gear: