Você está no menu de acessibilidade

Utilize este identificador para citar ou criar um link para este item: http://acervodigital.unesp.br/handle/11449/71350
Título: 
Tracking the fin trade: Genetic stock identification in western Atlantic scalloped hammerhead sharks Sphyrna lewini
Autor(es): 
Instituição: 
  • Nova Southeastern University
  • Universidade Estadual Paulista (UNESP)
  • Stony Brook University
ISSN: 
  • 1863-5407
  • 1613-4796
Resumo: 
Location or stock-specific landing data are necessary to improve management of shark stocks, especially those imperiled by overexploitation as a result of the international shark fin trade. In the current absence of catch monitoring directly at extraction sites, genetic stock identification of fins collected from major market supply chain endpoints offers an overlooked but potentially useful approach for tracing the fins back to their geographical, or stock of, origin. To demonstrate the feasibility of this approach, we used mitochondrial control region (mtCR) sequences to trace the broad geographical origin of 62 Hong Kong market-derived Sphyrna lewini fins. Of these fins 21% were derived from the western Atlantic, where this species is listed as 'Endangered' by the International Union for the Conservation of Nature (IUCN). We also show that S. lewini mtCR sequences are geographically segregated in the western Atlantic (overall ΦST = 0.74, n = 177 sharks), indicating that breeding females either remain close to, or home back to, their natal region for parturition. Mixed stock analysis simulations showed that it is possible to estimate the relative contributions of these mitochondrial stocks to fin mixtures in globally sourced trade hubs. These findings underscore the feasibility of using genetic stock identification to source market-derived shark fins to obtain essential and otherwise unavailable data on exploitation levels, and thus to productively inform stock assessment and management of S. lewini and potentially also of other fished shark species. © Inter-Research 2009.
Data de publicação: 
1-Dez-2009
Citação: 
Endangered Species Research, v. 9, n. 3, p. 221-228, 2009.
Duração: 
221-228
Palavras-chaves: 
  • Conservation
  • Market survey
  • Mixed stock analysis
  • Provenance
  • Stock structure
  • Wildlife forensics
  • endangered species
  • exploitation
  • nature conservation
  • parturition
  • shark
  • simulation
  • stock assessment
  • stock identification
  • wildlife management
  • Atlantic Ocean
  • Atlantic Ocean (West)
  • Chondrichthyes
  • Sphyrna lewini
  • Sphyrnidae
Fonte: 
http://dx.doi.org/10.3354/esr00241
Endereço permanente: 
Direitos de acesso: 
Acesso aberto
Tipo: 
outro
Fonte completa:
http://repositorio.unesp.br/handle/11449/71350
Aparece nas coleções:Artigos, TCCs, Teses e Dissertações da Unesp

Não há nenhum arquivo associado com este item.
 

Itens do Acervo digital da UNESP são protegidos por direitos autorais reservados a menos que seja expresso o contrário.