Genetic variability of two populations of Pseudoplatystoma reticulatum from the Upper Paraguay River Basin
Genet. mol. biol
;
32(4): 868-873, 2009. graf, tab
Artículo
en Inglés
| LILACS
| ID: lil-531789
ABSTRACT
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 percent (Fst) and 10.67 percent (Rst), all being highly significant (p < 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.
Texto completo:
Disponible
Índice:
LILACS (Américas)
País/Región como asunto:
America del Sur
/
Paraguay
Idioma:
Inglés
Revista:
Genet. mol. biol
Asunto de la revista:
Genética
Año:
2009
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade Estadual Paulista 'Júlio de Mesquita Filho'/BR
/
Universidade do Estado de Mato Grosso/BR
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