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Is Nematocharax (Actinopterygii, Characiformes) a monotypic fish genus?
Barreto, Silvia Britto; Nunes, Lorena Andrade; da Silva, André Teixeira; Jucá-Chagas, Ricardo; Diniz, Débora; Sampaio, Iracilda; Schneider, Horacio; Affonso, Paulo Roberto Antunes de Mello.
Afiliação
  • Barreto SB; a Department of Biological Sciences, Universidade Estadual do Sudoeste da Bahia, Av. José Moreira Sobrinho, s/n, Jequiezinho, 45206190, Jequié, Bahia, Brazil.
  • Nunes LA; a Department of Biological Sciences, Universidade Estadual do Sudoeste da Bahia, Av. José Moreira Sobrinho, s/n, Jequiezinho, 45206190, Jequié, Bahia, Brazil.
  • da Silva AT; b Department of Zoology, Biosciences Institute, Universidade Estadual Paulista Júlio de Mesquita Filho, Av. 24-A, 1515, Bela Vista, 13506970, Rio Claro, São Paulo, Brazil.
  • Jucá-Chagas R; a Department of Biological Sciences, Universidade Estadual do Sudoeste da Bahia, Av. José Moreira Sobrinho, s/n, Jequiezinho, 45206190, Jequié, Bahia, Brazil.
  • Diniz D; a Department of Biological Sciences, Universidade Estadual do Sudoeste da Bahia, Av. José Moreira Sobrinho, s/n, Jequiezinho, 45206190, Jequié, Bahia, Brazil.
  • Sampaio I; c Coastal Studies Institute, Universidade Federal do Pará, Alameda Leandro Ribeiro, s/n, Aldeia, 68600000, Bragança, Pará, Brazil.
  • Schneider H; c Coastal Studies Institute, Universidade Federal do Pará, Alameda Leandro Ribeiro, s/n, Aldeia, 68600000, Bragança, Pará, Brazil.
  • Affonso PR; a Department of Biological Sciences, Universidade Estadual do Sudoeste da Bahia, Av. José Moreira Sobrinho, s/n, Jequiezinho, 45206190, Jequié, Bahia, Brazil.
Genome ; 59(10): 851-865, 2016 Oct.
Article em En | MEDLINE | ID: mdl-27608265
The combination of DNA barcodes and geometric morphometrics is useful to discriminate taxonomically controversial species, providing more precise estimates of biodiversity. Therefore, our goal was to assess the genetic and morphometric diversity in Nematocharax, a controversial monotypic and sexually dimorphic genus of Neotropical fish, based on sequencing of cytochrome c oxidase subunit I (COI) and morphometric analyses in seven populations of N. venustus from coastal rivers in Brazil. The average pairwise intrapopulation divergence in COI ranged from 0 to 2.2%, while the average pairwise interpopulation divergence varied from 0 to 7.5%. The neighbour-joining (NJ) tree resulted in five genetic groups (bootstrap ≥ 97%), which correspond to the five clusters delimited by the BIN System, GMYC, and bPTP, indicating that there might be at least five species (or OTUs) within Nematocharax. Morphometric differences among these genetic lineages were also identified. Apparently, sexual selection, restricted dispersal, and geographic isolation might have acted synergistically to cause the evolutionary split of populations. These data challenge the current view that Nematocharax is a monotypic genus inasmuch as evolutionarily significant units or even distinguished species were identified. Therefore, we recommend that the highly impacted coastal basins in northeastern Brazil should be prioritized in conservation plans.
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Código de Barras de DNA Taxonômico / Caraciformes Tipo de estudo: Prognostic_studies Limite: Animals País/Região como assunto: America do sul / Brasil Idioma: En Revista: Genome Assunto da revista: GENETICA Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Canadá
Buscar no Google
Adicionar na Minha BVS
Imprimir
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PubMed Links

Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Código de Barras de DNA Taxonômico / Caraciformes Tipo de estudo: Prognostic_studies Limite: Animals País/Região como assunto: America do sul / Brasil Idioma: En Revista: Genome Assunto da revista: GENETICA Ano de publicação: 2016 Tipo de documento: Article País de afiliação: Brasil País de publicação: Canadá