Rare earth magnets

[Description pending]

Field investigation of rare-earth metal as a deterrent to spiny dogfish in the Pacific halibut fishery

Study Type: 

wild

Location: 

Alaska

Target catch: 

Pacific halibut

Effect on bycatch species: 

Experimental hooks resulted in greater reduction on catch of longnose skate

Effect on target catch: 

Did not affect catches

Article: 

Bycatch species: 

Reduction technique: 

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Field Study

Study Type: 

wild

Location: 

South Carolina

Target catch: 

None reported

Effect on bycatch species: 

Barium-ferrite magnets significantly reduced catches of blacktip sharks and southern stingrays.

Effect on target catch: 

No impact on teleosts

Article: 

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Reduction technique: 

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Field Study 739

Study Type: 

wild

Location: 

South Carolina

Target catch: 

None reported

Effect on bycatch species: 

Neodymium-iron-boron magnets significantly reduced catches of Atlantic sharpnose shark and smooth dogfish.

Effect on target catch: 

There were no differences in the catch rates of several fish species, including Atlantic croaker, oyster toadfish, black sea bass and bluefish when magnets were used.

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Reduction technique: 

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Field Study 725

Study Type: 

wild

Location: 

Pacific Ocean

Target catch: 

None reported

Effect on bycatch species: 

Metal affixed to baited hook significantly reduced catches of juvenile hammerhead sharks but not blue, shortfin mako, pelagic thresher, sandbar or tiger sharks

Effect on target catch: 

None reported

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Study Type: 

wild

Location: 

Laboratory study

Target catch: 

Pacific halibut

Effect on bycatch species: 

Mischmetal reduced the likelihood of an attack or consumption of bait by spiny dogfish.

Effect on target catch: 

Did not affect halibut

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: 

Field investigation of rare-earth metal as a deterrent to spiny dogfish in the Pacific halibut fishery

Study Type: 

wild

Location: 

Alaska

Target catch: 

Pacific halibut

Effect on bycatch species: 

Slightly reduced bycatch of spiny dogfish

Effect on target catch: 

Did not affect catch of halibut

Article: 

Bycatch species: 

Reduction technique: 

Fishing Gear: