Do rare-earth metals deter spiny dogfish? A feasibility study on the use of electropositive

A rare-earth metal alloy (cerium/lanthanide) was tested to determine if it would reduce bycatch of spiny lobster on longlines and rod and reel gear in the Gulf of Maine. Laboratory and field trials showed no significant reduction in dogfish catch.
Field Studies:

Location	Fishing gear	Reduction technique	Bycatch species	Effect on bycatch species	Catch	Effect on target catch	Type
Gulf of Maine	Hooks-and-Lines	Rare earth magnets	Elasmobranchs	Did not significantly reduce dogfish catch		NA	In the wild