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vol.65 número3Ecologia da comunidade de metazoários parasitos de manjuba Anchoa tricolor (Osteichthyes: Engraulidae) do litoral do Estado do Rio de Janeiro, Brasil 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

WALDSCHMIDT, A. M.; LOPES, L. A.; MARCO JR., P.  e  CAMPOS, L. A. O.. Genetics of Euglossini bees (Hymenoptera) in fragments of the Atlantic Forest in the region of Viçosa, MG. Braz. J. Biol. [online]. 2005, vol.65, n.3, pp.541-549. ISSN 1519-6984.  http://dx.doi.org/10.1590/S1519-69842005000300020.

With uncontrolled deforestation, forest fragments remain, which in most cases are in different stages of regeneration and present isolated populations. In the present study we analyzed the genetic patterns of Eulaema nigrita populations in seven Atlantic Forest fragments of different sizes and successional stages in the region of Viçosa, MG. This was done by RAPD molecular markers. We observed that the area of the fragments had no effect on the genetic variability of E. nigrita in the direction predicted by meta-population models. Medium-sized well-preserved woods presented the lowest variability, whereas large and small woods were statistically identical. The evidence supports the notion that rural areas present greater dispersal among fragments, implying greater similarity between the populations of fragments located in rural areas when compared to fragments in urban areas.

Palavras-chave : Euglossini; fragments of wood; genetic structure; RAPD.

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