Phylogeography of Hypostomus strigaticeps (Siluriformes: Loricariidae) inferred by mitochondrial DNA reveals its distribution in the upper Parana River basin

Autor(es)

de Borba, Rafael Splendore ^[1] ; Zawadzki, Claudio Henrique ^[2] ; Oliveira, Claudio ^[3] ; Perdices, Anabel ^[4] ; Parise-Maltempi, Patrcia Pasquali ^[1] ; Alves, Anderson Luis ^{[1, 5]}

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Dept Biol, Inst Biociencias, Lab Citogenet, Rio Claro, SP - Brazil

^[2] Univ Estadual Maringa, Dept Biol, Nucleo Pesquisas Limnol Ictiol & Aquicultura Nupe, Maringa, Parana - Brazil

^[3] Univ Estadual Paulista, Dept Morfol, Botucatu, SP - Brazil

^[4] CSIC, Museo Nacl Ciencias Nat, Dept Biodiversidad & Biol Evolutiva, E-28006 Madrid - Spain

^[5] Embrapa Pesca & Aquicultura CNPASA, BR-77015012 Palmas, Tocantins - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Neotropical Ichthyology; v. 11, n. 1, p. 111-116, JAN-MAR 2013.
• Citações Web of Science: 4

Resumo

In this study, phylogenetic and phylogeographic analyses of populations identified as Hypostomus strigaticeps from the upper Parana River basin were conducted in order to test whether these different populations comprises cryptic species or structured populations and to assess their genetic variability. The sequences of the mitochondrial DNA ATP sintetase (subunits 6/8) of 27 specimens from 10 populations (one from Mogi-Guacu River, five from Paranapanema River, three from Tiete River and one from Peixe River) were analyzed. The phylogeographic analysis showed the existence of eight haplotypes (A-H), and despite the ancestral haplotype includes only individuals from the Tiete River basin, the distribution of H. strigaticeps was not restricted to this basin. Haplotypes A, B and F were the most frequent. Haplotypes D, E, F, G, and H were present in the sub-basin of Paranapanema, two (A and B) were present in the sub-basin of the Tiete River, one (C) was exclusively distributed in the sub-basin of the Peixe River, and one (B) was also present in the sub-basin of the Grande River. The phylogenetic analysis showed that the populations of H. strigaticeps indeed form a monophyletic unit comprising two lineages: TG, with representatives from the Tiete, Mogi-Guacu and Peixe Rivers; and PP, with specimens from the Paranapanema River. The observed degree of genetic divergence within the TG and PP lineages was 0.1% and 0.2%, respectively, whereas the genetic divergence between the two lineages themselves was approximately 1%. The results of the phylogenetic analysis do not support the hypothesis of existence of crypt species and the phylogeographic analysis confirm the presence of H. strigaticeps in other sub-basins of the upper Parana River: Grande, Peixe, and Paranapanema sub-basins. (AU)

• Processo FAPESP: 07/58641-0 - Filogeografia e sistemática molecular da ictiofauna de riachos na Bacia do Alto Rio Paraná: Astyanax paranae (Pisces: Characidae) como modelo de estudo
• Beneficiário: Anderson Luís Alves
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores