Data/hora: 09/06/2024 18:21:53

Provedor de dados: | 74
País: | Brazil
Título: | Genetic variability of two populations of Pseudoplatystoma reticulatum from the Upper Paraguay River Basin
Autores: | Abreu,Marcia Matos de; Pereira,Luiz Henrique Garcia; Vila,Vilma Barretto; Foresti,Fausto; Oliveira,Claudio.
Data: | 2009-01-01
Ano: | 2009
Palavras-chave: | Fish; Population genetics; Microsatellite; Homing; Population structure.
Resumo: | Catfishes of the genus Pseudoplatystoma are very important species due to both their high commercial value and their ecological role as voracious predators. They undertake lengthy migratory movements during their life-cycle, this including reproductive migration which occurs from October to December in the rainy season. In the present study, seven microsatellite loci were analyzed to access genetic variability in two samples of P. reticulatum from the Upper Paraguay Basin. The loci were highly polymorphic (mean = 7.28). According to all analysis, the two samples of P. reticulatum revealed pronounced genetic differentiation. Fst value was 0.2290, Rst value 0.1067 and AMOVA 22.90% (Fst) and 10.67% (Rst), all being highly significant (p &lt; 0.001). The division of the fishes into two groups was confirmed by microsatellite multi-locus Bayesian assignment testing. The results obtained present evidence of genetic structuring in a P. reticulatum population.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000400032
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S1415-47572009005000075
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.32 n.4 2009
Fonte: | info:eu-repo/semantics/openAccess