Journal
MOLECULAR ECOLOGY
Volume 13, Issue 7, Pages 2089-2094Publisher
WILEY
DOI: 10.1111/j.1365-294X.2004.02207.x
Keywords
chimpanzee; genetic tagging; gorilla; microsatellite genotyping; noninvasive samples; quantitative PCR
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Genetic analysis using noninvasively collected samples such as faeces continues to pose a formidable challenge because of unpredictable variation in the extent to which usable DNA is obtained. We investigated the influence of multiple variables on the quantity of DNA extracted from faecal samples from wild mountain gorillas and chimpanzees. There was a small negative correlation between temperature at time of collection and the amount of DNA obtained. Storage of samples either in RNAlater solution or dried using silica gel beads produced similar results, but significantly higher amounts of DNA were obtained using a novel protocol that combines a short period of storage in ethanol with subsequent desiccation using silica.
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