Shark and ray trade in and out of Indonesia: Addressing knowledge gaps on the path to sustainability

Prasetyo, Andhika Prima; McDevitt, Allan D.; Murray, Joanna M.; Barry, Jon; Agung, Firdaus; Muttaqin, Efin; Mariani, Stefano

doi:10.1016/j.marpol.2021.104714

Cited by 25 publications

(27 citation statements)

References 44 publications

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“…Non-standardized commodity codes mask catch and trade details, making the full trade of this group impossible to determine (FAO 2022). Their fins are in demand and fetch high prices on the international market, and are exported from Bangladesh (if large enough), Indonesia, and several African countries to China (Haque and Spaet 2021, Jabado et al 2021b, Prasetyo et al 2021). In Ghana, while meat is sold for local consumption, fins from Guitarfishes are exported either through middlemen or directly from the fishers to buyers in The Gambia, Mali, and Senegal (Seidu et al 2022b).…”

Section: Resultsmentioning

confidence: 99%

“…Due to the broad labelling of processed seafood to commodity codes, it is impossible to determine which species are included in this trade after processing has occurred (FAO 2022). The use of species-specific reporting of sharks and rays has increased in some countries following a species’ CITES listing in order to accommodate international trade (i.e., Indonesia (Prasetyo et al 2021)). Currently, few countries report catch of Guitarfishes to FAO, including Brazil, which has not collected landing information since 2007 (Bernardo et al 2020).…”

Section: Discussionmentioning

confidence: 99%

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Guitarfishes are plucked: undermanaged in global fisheries despite declining populations and high volume of unreported international trade

Sherman

Simpfendorfer

Haque

et al. 2022

Preprint

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Some sharks and rays are subject to fisheries catch and international trade regulations. However, the Guitarfishes (family Rhinobatidae) are a highly threatened group with minimal regulations. Substantial underreporting of catch and broad commodity codes for traded products are masking the true volume of Guitarfishes included in international trade. Here, we collate international trade information for Guitarfishes that have not readily been documented in trade, possibly due to poor resolution of molecular genetic markers, to begin to document the extent of trade. We assess the shortfall in fisheries management (M-Risk) for all species of Guitarfish based on 99 assessments across 28 countries. Globally, Guitarfishes are inadequately managed, with an average M-Risk of 45% of an ideal score, resulting in 76% of species being threatened globally. The high and unregulated catch and trade volume, paired with the management shortfalls, require global integrated improvement in fisheries management, supported by regulating international trade to sustainable levels.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Guitarfishes are plucked: undermanaged in global fisheries despite declining populations and high volume of unreported international trade

Sherman

Simpfendorfer

Haque

et al. 2022

Preprint

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“…Here, we identify lower management risk scores for the CITES-listed Oceanic Whitetip and Silky Sharks ( C. longimanus and C. falciformis ), landing limits existed more often, and at higher resolution than the average requiem shark (60.1% ± 9.1 and 41.9% ± 9.8, respectively, vs. 20.1% ± 3.5 for all requiem sharks). For less easily identifiable species, like the requiem sharks, their trade from Indonesia, the top shark catching country in the world, is reported to Family, combining all Carcharhinidae, which contribute 51% to shark production (Prasetyo et al 2021). This broad level of reporting may be masking serial depletions.…”

Section: Discussionmentioning

confidence: 99%

High overexploitation risk due to management shortfall in highly traded requiem sharks

Sherman

Digel

Zubick

et al. 2022

Preprint

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While some sharks are subject to trade regulations, much of the international trade in fins (and likely meat too) is derived from requiem sharks (Carcharhinus spp). Here, we quantify catch, trade, and the shortfall in fisheries management (M-Risk) for 18 requiem shark species based on 230 assessments across 27 countries and four Regional Fisheries Management Organisations (RFMOs). Requiem sharks comprise one-third (~240,000 of 740,000 mt) of the annual global chondrichthyan catch and two-thirds (64%) of the fin trade of coastal sharks. They are inadequately managed, with an average M-Risk of 49% of an ideal score, consequently 71% of species are threatened globally. The high catch and trade volume and shortfall in management of these iconic species requires a global integrated improvement in fisheries management, supported by regulating international trade to sustainable levels.

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“…Southeast Asia is one of the areas with the highest number of endangered and data deficient shark species (Dulvy et al, 2017). However, research on sharks in this area has predominantly focused on taxonomy (Zhu, 1960;Ali et al, 2018), fisheries (Lam and Sadovy de Mitcheson, 2011;Friedman et al, 2018) and trade (Van Houtan et al, 2020;Prasetyo et al, 2021). The distribution pattern of shark biodiversity is still poorly understood.…”

Section: Introductionmentioning

confidence: 99%

“…Current fishery practices will likely lead to the extinction of some shark species in the future (Arai and Azri, 2019). With these extensive research gaps, our current knowledge is inadequate to meet the challenges of shark protection and management (Prasetyo et al, 2021). There is an urgent need to study the diversity distribution patterns and the current conservation status of the sharks in China and the ASEAN seas.…”

Section: Introductionmentioning

confidence: 99%

Setting Conservation Priorities for Marine Sharks in China and the Association of Southeast Asian Nations (ASEAN) Seas: What Are the Benefits of a 30% Conservation Target?

Ding

et al. 2022

Front. Mar. Sci.

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Sharks play an important role in marine ecosystems as top predators and have been increasingly accepted in recent years as a group for priority conservation worldwide. However, as one of the regions with the highest marine shark species richness, there is still a limited understanding of shark diversity patterns and conservation needs in China and the Association of Southeast Asian Nations (ASEAN) seas. In this study, we applied an ensemble species distribution model of five algorithms to investigate the diversity distribution patterns of 149 shark species in China and the ASEAN seas for the first time. A systematic conservation planning approach involving diversity, scarcity, and biogeographical distinctiveness was used to identify and compare conservation priority settings. Our results showed that bathymetry and dissolved oxygen were the most important variables contributing to shark distribution. The distribution pattern of shark species richness peaked on the continental shelves at 22–26°N, and a hotspot of shark diversity was identified around the Taiwan Strait. The spatial distribution of shark species in the nine orders and the 72 threatened shark species varied considerably. The existing marine protected area network only protects 2.1% of the ocean, 32.9% of the shark species, and 43.1% of the threatened species, highlighting a substantial conservation gap. Among the conservation priorities identified, the high conservation target scenario (30%) protects only 10%–15% more species than the low conservation target scenario (10%). However, under the high conservation target scenario, the conservation range of species tripled. Our results show that low conservation targets were only suitable for addressing the number of protected species, and that high targets would bring about improved outcomes for the number of protected species and the protected range of threatened species. Furthermore, planned priorities with a large clump pattern had slightly higher conservation achievements than those with small clumps. The results of this study will contribute to the development of a priority area network for sharks and provide a scientific basis for shark conservation and management in the China and ASEAN seas.

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Shark and ray trade in and out of Indonesia: Addressing knowledge gaps on the path to sustainability

Cited by 25 publications

References 44 publications

Guitarfishes are plucked: undermanaged in global fisheries despite declining populations and high volume of unreported international trade

Guitarfishes are plucked: undermanaged in global fisheries despite declining populations and high volume of unreported international trade

High overexploitation risk due to management shortfall in highly traded requiem sharks

Setting Conservation Priorities for Marine Sharks in China and the Association of Southeast Asian Nations (ASEAN) Seas: What Are the Benefits of a 30% Conservation Target?

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