Data/hora: 16/06/2024 15:41:53

Provedor de dados: | 74
País: | Brazil
Título: | Genetic variability of Hypostomus (Teleostei, Loricariidae) from the Ribeirão Maringá, a stream of the upper Rio Paraná basin, Brazil
Autores: | Paiva,Suzana de; Renesto,Erasmo; Zawadzki,Cláudio Henrique.
Data: | 2005-09-01
Ano: | 2005
Palavras-chave: | Allozymes; Heterozygosity; Hypostomus; Loricariidae; Systematic.
Resumo: | Hypostomus strigaticeps and two morphotypes of Hypostomus were collected from Ribeirão Maringá, a small tributary of the Rio Pirapó, an effluent of the upper Rio Paraná. The three populations were analyzed by allozyme electrophoresis that allowed the scoring of 25 loci from 14 enzyme systems. Heterozygosity values (He) were 0.028 in H. strigaticeps, 0.027 in Hypostomus sp. 1 and zero in Hypostomus sp. 2. Several diagnostic loci and fixed differences were observed for each population at loci Acp-A, Gcdh-A and Mdhp-A. Thus, all populations were genetically distinct, although there were many common alleles. The unbiased genetic identities of Nei (I) were estimated as 0.780 for Hypostomus sp. 1 and H. strigaticeps, 0.357 for H. strigaticeps and Hypostomus sp. 2 and 0.322 for Hypostomus sp. 1 and Hypostomus sp. 2. The data indicate that the two morphotypes are distinct species from Hypostomus strigaticeps.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000300005
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572005000300005
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.28 n.3 2005
Fonte: | info:eu-repo/semantics/openAccess