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vol.67 número4  suppl.Variabilidade genética de Conopophaga lineata (Conopophagidae) em fragmentos florestais da Mata AtlânticaDNA mitocondrial corrobora a distinção entre as espécies Thamnophilus pelzelni Hellmayr, 1924 e T. ambiguus Swainson, 1825 (Passeriformes: Thamnophilidae) índice de autoresíndice de assuntospesquisa de artigos
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Brazilian Journal of Biology

versão impressa ISSN 1519-6984versão On-line ISSN 1678-4375

Resumo

LUNARDI, VO.; FRANCISCO, MR.  e  GALETTI JR., PM.. Population structuring of the endemic black-cheeked gnateater, Conopophaga melanops melanops (Vieillot, 1818) (Aves, Conopophagidae), in the Brazilian Atlantic Forest. Braz. J. Biol. [online]. 2007, vol.67, n.4, suppl., pp.867-872. ISSN 1519-6984.  http://dx.doi.org/10.1590/S1519-69842007000500009.

Randomly amplified polymorphic DNA (RAPD) markers were used to analyze genetic differentiation among three populations of the endemic Black-cheeked Gnateater (Conopophaga melanops melanops) within a larger pristine reminiscent of the Brazilian Atlantic Forest. Analyses of molecular variance (AMOVA) (fST = 0.13149, P < 0.0001) and the nonparametric test for homogeneity of the molecular variance (HOMOVA) (B = 0.32337; P = 0.0019) showed a statistically significant genetic divergence among the three Black-cheeked Gnateater populations in a continuous transect of 250 km. Some hypothetic explanations for these results are the sedentary nature of the species and the historical isolation of the populations in refuges during the Pleistocene. The present results suggest that the local populations were naturally differentiated along the entire original range before the recent process of massive deforestation.

Palavras-chave : population genetics; suboscines passerines; tropical forest; conservation genetics.

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