A new 2CTAB/PCI method improves DNA amplification success from faeces of Mediterranean (Barbary macaques) and tropical (lowland gorillas) primates

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Animal genomic DNA extracts of sufficient quality to address questions about population biology or behavioural ecology can be obtained from faeces when adequate extraction procedures are used. The presence of PCR inhibitors in extract products appears generally the main factor limiting DNA amplification success. We compared DNA amplification success from faeces of a tropical primate (western lowland gorilla, Gorilla g. gorilla) and a Mediterranean primate (Barbary macaque, Macaca sylvanus) between a standardized extraction technique widely used in animals (QIAamp® stool kit), a technique mainly used in plant species (CTAB) and a new protocol (2CTAB/PCI). Amplification success varied from 51% to 97%, the highest success being reached with the 2CTAB/PCI protocol in both species.

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