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Evaluation of genetic diversity and population structure in a commercially important freshwater fish Prochilodus costatus (Characiformes, Prochilodontidae) using complex hypervariable repeats

2012; Research Foundation of Ribeirão Preto; Volume: 11; Issue: 4 Linguagem: Inglês

10.4238/2012.september.27.4

ISSN

1676-5680

Autores

Tatiana M. Barroca, Gilmar Bastos Santos, Nádia Duarte, Evanguedes Kalapothakis,

Tópico(s)

Fish Biology and Ecology Studies

Resumo

We used complex hypervariable repeats to evaluate the genetic diversity and structure of Prochilodus costatus (Characiformes), an ecologically and economically important species endemic to the São Francisco River basin.Hydroelectric dams along the river have led to population fragmentation, which can limit gene flow.Restocking from hatcheries has been used to repopulate declining populations.To determine how fragmentation and hatchery supplementation affect P. costatus population structure, we studied populations from three sites up and downstream of the Gafanhoto Dam (Pará River, State of Minas Gerais).High levels of genetic diversity were found within populations (0.926 to 0.873); the three populations showed significant differentiation (F ST = 0.16), suggest-©FUNPEC-RP www.funpecrp.com.

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