Permanent magnets reduce bycatch of benthic sharks in an ocean trap fishery

Authors: 

Richards, R.J., Raoult, V., Powter, D.M. and Gaston, T.F.

Year: 

2018

Journal/Publisher Name: 

Fisheries Research

Volume (Issue #): 

208

Page #s: 

16-21

Contact information: 

School of Environmental and Life Sciences, University of Newcastle, NSW, Australia
Summary: 

The potential benefits of permanent magnets on ocean fish traps targeting snapper (Pagrus auratus) and their abiliy to reduce elasmobranch bycatch. The study deployed over 1000 traps in a fishery-dependent survey in New South Whales, Australia. The incorporation of magnets into fish traps significantly reduced incidences of elasmobranch bycatch by more than a thrid. At the same time, the target species catch rate was significantly increased. Magnets can therefore be used as an effective bycatch reduction device to reduce interactions with elasmobranchs.