2020
DOI: 10.1098/rsbl.2020.0609
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Coastal sharks supply the global shark fin trade

Abstract: Progress in global shark conservation has been limited by constraints to understanding the species composition and geographic origins of the shark fin trade. Previous assessments that relied on earlier genetic techniques and official trade records focused on abundant pelagic species traded between Europe and Asia. Here, we combine recent advances in DNA barcoding and species distribution modelling to identify the species and source the geographic origin of fins sold at market. Derived models of species environ… Show more

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Cited by 16 publications
(27 citation statements)
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“…While many shark populations are threatened and data poor 56 , dedicated fishery-independent monitoring programs face many logistical challenges 57 . Therefore, there is a critical need to incorporate innovative and open-access alternatives to supplement population monitoring, especially at spatial scales relevant for particular management concerns 58,59 . In this vein, community-based biodiversity monitoring may provide an efficient and nimble alternative to more conventional wildlife monitoring programs.…”
Section: Discussionmentioning
confidence: 99%
“…While many shark populations are threatened and data poor 56 , dedicated fishery-independent monitoring programs face many logistical challenges 57 . Therefore, there is a critical need to incorporate innovative and open-access alternatives to supplement population monitoring, especially at spatial scales relevant for particular management concerns 58,59 . In this vein, community-based biodiversity monitoring may provide an efficient and nimble alternative to more conventional wildlife monitoring programs.…”
Section: Discussionmentioning
confidence: 99%
“…High market demand for high value shark products is the main reason for the overexploitation of shark resources [1,8], which ultimately leads to illegal trade [9]. Much of this trade involves poorly reported catches from Eastern and Western Pacific countries, which supply, for instance, global shark fin markets [10,11]. Understanding and regulating such trade is challenging because shark products are extremely diverse in both their usage and their value, and are processed in a myriad of different ways (Figure 1) [12][13][14].…”
Section: Introductionmentioning
confidence: 99%
“…The fact that the size of a nation's exclusive economic zone accounted for more of the variation in Van Houtan et al's [5] estimate of a nation's contribution to the fin trade (r 2 = 0.48) than its elasmobranch catch as reported to FAO (r 2 = 0.20) underlines this erroneous assumption. An example of the dissonance caused by excluding fishing activity is northwestern Australia, where Van Houtan et al [5] indicate a high probability of shark fin origin for many species, despite the area being closed to commercial shark fishing since 1993, and no operational fisheries to support suggested catch [7]. Such discrepancies have overinflated the estimated contribution of shark fins from nations as these factors have not been accounted for, leading to unrealistic conclusions about the source of fins in trade.…”
mentioning
confidence: 98%
“…species distribution models from Van Houtan et al [5] known species distributions from the IUCN red list of threatened species The flaws in the methods used by Van Houtan et al [5] mean that the conclusions that they have drawn are erroneous. First, we argue that their results at best show the probability of where species in the fin trade occur, not probabilities that 'represent the top nations contributing the most shark fins to the global market' (caption for figure 2 in Van Houtan et al [5]).…”
mentioning
confidence: 99%
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