Review and evaluation of three mitigation measures-bird-scaring line, underwater setting and line shooter-to reduce seabird bycatch in the north Atlantic longline fishery

Bird-scaring lines, underwater setting and line shooters all reduced the incidental capture of seabirds, with bird-scaring lines being the most effective. These mitigation measures also reduced bait loss and increased the catch rates of target species.
Field Studies:

Location	Fishing gear	Reduction technique	Bycatch species	Effect on bycatch species	Catch	Effect on target catch	Type
Norway	Hooks-and-Lines	Bird-scaring devices	Seabirds	Reduced incidental capture of seabirds, mostly fulmars	Torsk (Brosme brosme), ling (Molva molva) and haddock (Melanogrammus aeglefinus)	Increased target catch rates	In the wild
Norway	Hooks-and-Lines	Sub-surface sets	Seabirds	Reduced incidental capture of seabirds, mostly fulmars	Torsk (Brosme brosme), ling (Molva molva) and haddock (Melanogrammus aeglefinus)	Increased target catch rates	In the wild
Norway	Hooks-and-Lines	Line shooter	Seabirds	Reduced incidental capture of seabirds, mostly fulmars	Torsk (Brosme brosme), ling (Molva molva) and haddock (Melanogrammus aeglefinus)	Increased target catch rates	In the wild