Sustainability of elasmobranchs caught as bycatch in a tropical prawn (shrimp) trawl fishery.

Fishery Bulletin | October 1, 2002| | Copyright

Abstract--The bycatch of Australia's northern prawn fishery (NPF) comprises 56 elasmobranch species (16 families). The impact of this fishery on the sustainability of these species has not been addressed. We obtained estimates of catch rates and the within-net survival of elasmobranchs. Carcharhinus tilstoni, C. dussumieri, Rhynchobatus djiddensis, and Himantura toshi represented 65% of the bycatch. For most species, >50% of individuals in the bycatch were immature, and some species recruited to the fishery at birth. For all species combined, 66% of individuals in the bycatch ...

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