Field Study 605

Location
eastern Pacific Ocean
Article
Comparison of circle hook and J hook catch rate for target and bycatch species taken in the Korean tuna longline fishery during 2005-2006
Target catch
Tuna
Study Type
Field study in the wild
Effect on target catch
No significant differences in catch rates of the target species were found between hook types. The highest catch rates for tunas were found on circle hooks size 15. Squid and jack mackerel bait had the highest catch rates for tunas.
Effect on bycatch species
Significant differences between J and circle hook size 15 and between J and circle hook size 16 were found in the bycatch species group (all species grouped together). Chub mackerel bait caught the sharks.
Bycatch species
Bony Fishes
Elasmobranchs
Sea Turtles
Fishing Gear
Hooks-and-Lines
Reduction technique
Circle hooks