Species composition of the international shark fin trade assessed through a retail-market survey in Hong Kong

Conservation Biology : the Journal of the Society for Conservation Biology
Andrew T FieldsDemian D Chapman

Abstract

The shark fin trade is a major driver of shark exploitation in fisheries all over the world, most of which are not managed on a species-specific basis. Species-specific trade information highlights taxa of particular concern and can be used to assess the efficacy of management measures and anticipate emerging threats. The species composition of the Hong Kong Special Administrative Region of China, one of the world's largest fin trading hubs, was partially assessed in 1999-2001. We randomly selected and genetically identified fin trimmings (n = 4800), produced during fin processing, from the retail market of Hong Kong in 2014-2015 to assess contemporary species composition of the fin trade. We used nonparametric species estimators to determine that at least 76 species of sharks, batoids, and chimaeras supplied the fin trade and a Bayesian model to determine their relative proportion in the market. The diversity of traded species suggests species substitution could mask depletion of vulnerable species; one-third of identified species are threatened with extinction. The Bayesian model suggested that 8 species each comprised >1% of the fin trimmings (34.1-64.2% for blue [Prionace glauca], 0.2-1.2% for bull [Carcharhinus leucas] and...Continue Reading

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Citations

Nov 7, 2018·Scientific Reports·Diego CardeñosaDemian D Chapman
Nov 22, 2019·PloS One·Brooke M D'AlbertoColin A Simpfendorfer
Sep 1, 2020·PloS One·Gareth L JordaanJohan C Groeneveld
May 28, 2019·Science·David W Sims, Matthew T Frost
Aug 2, 2020·Scientific Reports·Diego CardeñosaDemian D Chapman
Feb 5, 2021·Conservation Biology : the Journal of the Society for Conservation Biology·Jessica R QuinlanDemian D Chapman
Oct 29, 2020·Biology Letters·Kyle S Van HoutanSalvador J Jorgensen

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