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Utilize este identificador para citar ou criar um link para este item: http://acervodigital.unesp.br/handle/11449/128624
Título: 
Identification of the notothenioid sister lineage illuminates the biogeographic history of an Antarctic adaptive radiation
Autor(es): 
Instituição: 
  • Yale University
  • Yale Peabody Museum of Natural History
  • University of Oxford
  • Universidade Estadual Paulista (UNESP)
  • University of Washington
  • Natural History Museum of Los Angeles County
  • National Museum of Nature and Science of Tsukuba City
  • University of California
  • Ohio University
  • University of Tennessee
ISSN: 
1471-2148
Financiador: 
  • National Science Foundation (NSF)
  • Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
  • Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
  • Ministerio do Meio Ambiente (IBAMA)
Número do financiamento: 
  • National Science Foundation (NSF): OPP 01-32032
  • National Science Foundation (NSF): ANT-1341661
  • National Science Foundation (NSF): ANT-0436190
  • CNPq: 309632/2007-2
  • FAPESP: 2008/08294-5
  • Ministerio do Meio Ambiente (IBAMA): 13843-1
Resumo: 
Background: Antarctic notothenioids are an impressive adaptive radiation. While they share recent common ancestry with several species-depauperate lineages that exhibit a relictual distribution in areas peripheral to the Southern Ocean, an understanding of their evolutionary origins and biogeographic history is limited as the sister lineage of notothenioids remains unidentified. The phylogenetic placement of notothenioids among major lineages of perciform fishes, which include sculpins, rockfishes, sticklebacks, eelpouts, scorpionfishes, perches, groupers and soapfishes, remains unresolved. We investigate the phylogenetic position of notothenioids using DNA sequences of 10 protein coding nuclear genes sampled from more than 650 percomorph species. The biogeographic history of notothenioids is reconstructed using a maximum likelihood method that integrates phylogenetic relationships, estimated divergence times, geographic distributions and paleogeographic history.Results: Percophis brasiliensis is resolved, with strong node support, as the notothenioid sister lineage. The species is endemic to the subtropical and temperate Atlantic coast of southern South America. Biogeographic reconstructions imply the initial diversification of notothenioids involved the western portion of the East Gondwanan Weddellian Province. The geographic disjunctions among the major lineages of notothenioids show biogeographic and temporal correspondence with the fragmentation of East Gondwana.Conclusions: The phylogenetic resolution of Percophis requires a change in the classification of percomorph fishes and provides evidence for a western Weddellian origin of notothenioids. The biogeographic reconstruction highlights the importance of the geographic and climatic isolation of Antarctica in driving the radiation of cold-adapted notothenioids.
Data de publicação: 
11-Jun-2015
Citação: 
Bmc Evolutionary Biology. London: Biomed Central Ltd, v. 15, p. 1-14, 2015.
Duração: 
1-14
Publicador: 
Biomed Central Ltd
Palavras-chaves: 
  • Ancestral range estimation
  • Weddellian Province
  • Notothenioidei
  • Percomorpha
Fonte: 
http://www.biomedcentral.com/1471-2148/15/109
Endereço permanente: 
Direitos de acesso: 
Acesso aberto
Tipo: 
outro
Fonte completa:
http://repositorio.unesp.br/handle/11449/128624
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