Location
Southwest Atlantic
Target catch
Tuna
Study Type
Field study in the wild
Effect on target catch
Albacore catches increased with circle hooks on both types of longline. Shortfin mako shark catch rates increased with circle hooks on the American style longlines.
Effect on bycatch species
American style longlines - no significant difference in catch rates for blue or porbeagle sharks, seabirds or sea turtles. Spanish style longline - significant decrease in pelagic stingray catch rates on circle hooks, no significant differences in catch
Bycatch species
Fishing Gear
Reduction technique