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Genetics and Molecular Biology

Print version ISSN 1415-4757

Abstract

CUNHA, Haydée A.  and  SOLE-CAVA, Antonio M.. Molecular sexing of tucuxi dolphins (Sotalia guianensis and Sotalia fluviatilis) using samples from biopsy darting and decomposed carcasses. Genet. Mol. Biol. [online]. 2007, vol.30, n.4, pp. 1186-1188. ISSN 1415-4757.  http://dx.doi.org/10.1590/S1415-47572007000600025.

We tested the zinc-finger sex chromosome-linked genes Zfx/Zfy and the sex-determining region Y (Sry) genes for gender determination of biopsy samples from marine and riverine tucuxi dolphins (Sotalia guianensis and S. fluviatilis). We also evaluated the performance of these genes with decomposed carcasses, for which sexing cannot rely on the direct examination of the reproductive tract. Both systems proved reliable for sexing 46 fresh and decomposed samples, making them especially useful when biopsy darting is coupled with photo-identification studies.

Keywords : cetaceans; remote sampling; sex determination; Sry; Zfx/Zfy.

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