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We have sequenced partial fragments of DBX and DBY genes of the endangered Iberian desman (Galemys pyrenaicus). The sequences were used to design a sex determination protocol for non-invasive samples based on a PCR reaction, using only three primers. This protocol allows the simultaneous amplification of two fragments, one corresponding to the DBX gene and the other to the DBY gene, both differing in size. To increase sensitivity on the detection of positive amplifications and on the determination of fragment size we use a fluorescently labelled primer. The protocol has been tested in DNA samples from hair and stool, revealing major difficulties in sexing faecal samples, but unambiguous sexing of hair samples
DOI: 10.1007/s10592-009-9913-1

Тэги: Iberian desman Non-invasive samples Sexing DBY DBX

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