Location
South-western Atlantic Ocean
Target catch
Tuna, blue sharks, swordfish
Study Type
Field study in the wild
Effect on target catch
Catch rates of targeted species including bigeye and albacore tuna and blue sharks were increased with the use of circle hooks, while no difference was found for yellowfin tuna, shortfin mako or hammerhead sharks or for dolphinfish.
Effect on bycatch species
The incidental capture of loggerhead sea turtles was reduced by 55% and for leatherback sea turtles by 65% when circle hooks were used.
Fishing Gear
Reduction technique