tuna (pelagic) and sharks (bottom)
Field study in the wild
Effect on target catch:
None reported for pelagic longlines. On bottom longlines, CPUE was higher for blacknose and nurse sharks and southern stingrays; no CPUE difference between hook type; more tiger and blacknose sharks were alive at haulback with circle hooks
Effect on bycatch species:
CPUE was significantly higher for night, blue, silky, and oceanic whitetip sharks on circle hooks.