The effect of light toriline on seabird by-catch and fish catch rates in the pelagic longline fishery off southern Brazil

The use of light torilines (made with nylon monofilament branch lines and streamers made from other light material) on pelagic longlines reduced the incidental capture of seabirds by 64%. The capture of target species, including swordfish and blue sharks, was increased by 32% and 15.1% respectively when light torilines were used.
Field Studies:

Location	Fishing gear	Reduction technique	Bycatch species	Effect on bycatch species	Catch	Effect on target catch	Type
Southern Brazil	Hooks-and-Lines	Bird-scaring devices	Seabirds	Reduced incidental capture of seabirds by 64%	Swordfish, blue sharks	Increased catch rates of target species (swordfish by 32% and blue sharks by 15.1%)	In the wild