The Species and Origin of Shark Fins in Taiwan's Fishing Ports, Markets, and Customs Detention: A DNA Barcoding Analysis

PloS One
Po-Shun ChuangJen-Chieh Shiao

Abstract

The increasing consumption of shark products, along with the shark's fishing vulnerabilities, has led to the decrease in certain shark populations. In this study we used a DNA barcoding method to identify the species of shark landings at fishing ports, shark fin products in retail stores, and shark fins detained by Taiwan customs. In total we identified 23, 24, and 14 species from 231 fishing landings, 316 fin products, and 113 detained shark fins, respectively. All the three sample sources were dominated by Prionace glauca, which accounted for more than 30% of the collected samples. Over 60% of the species identified in the fin products also appeared in the port landings, suggesting the domestic-dominance of shark fin products in Taiwan. However, international trade also contributes a certain proportion of the fin product markets, as four species identified from the shark fin products are not found in Taiwan's waters, and some domestic-available species were also found in the customs-detained sample. In addition to the species identification, we also found geographical differentiation in the cox1 gene of the common thresher sharks (Alopias vulpinus), the pelagic thresher shark (A. pelagicus), the smooth hammerhead shark (Sphyr...Continue Reading

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Citations

Oct 28, 2017·Conservation Biology : the Journal of the Society for Conservation Biology·Andrew T FieldsDemian D Chapman
Feb 22, 2018·Scientific Reports·Leonardo Manir FeitosaLuís Fernando Carvalho-Costa
Nov 7, 2018·Scientific Reports·Diego CardeñosaDemian D Chapman
Jun 1, 2018·Evidence-based Complementary and Alternative Medicine : ECAM·Fan YangHaifeng Li

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Datasets Mentioned

BETA
FJ519394

Methods Mentioned

BETA
PCR

Software Mentioned

MEGA
Molecular Evolutionary Genetics Analysis ( MEGA )
BOLD

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