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High efficiency protocol of DNA extraction from Micromys minutus mandibles from owl pellets: a tool for molecular research of cryptic mammal species
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Genomik.
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2014 (Engelska)Ingår i: Acta Theriologica, ISSN 0001-7051, E-ISSN 2190-3743, Vol. 59, nr 1, s. 99-109Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Owl pellets have high potential as a source of DNA. However, this noninvasive method of collecting DNA is rarely used, and its methodological aspects are poorly understood. We investigated the methodology for DNA extraction and amplification from owl pellets containing the smallest European rodent-the Harvest mouse Micromys minutus-as an example. We used mandibles identified in owl pellets for mitochondrial and nuclear DNA amplification. For DNA extraction, we tested two commercial protocols and utilized a protocol being a combination of two commercial kits which ensured high efficiency of DNA extraction. Additionally, we recorded that the amount of DNA was five times higher in extracts from teeth as compared to DNA extracts from jawbones derived from the same mandible. The quantity of DNA was significantly positively correlated with biological sample weight; however, the age of the pellet remains had an impact on the level of inhibition. We recorded inhibition in 40 % of mtDNA extracts derived from pellets older than 150 months, whereas in DNA extracts from pellets younger than 80 months, we did not observe a negative impact of inhibition on PCR efficiency. The amplification success rate was 89.9 % for the mitochondrial fragment and 39.4 % in the case of the nuclear fragment. We observed partial degradation of DNA evidenced by the fact that the longest fragments that we were able to amplify in the case of mtDNA were 450 and 200 bp for nuDNA. The study shows that pellets can be considered as a source of DNA and have high potential for molecular research in the case of threatened species and species that are difficult to study using standard field techniques.

Ort, förlag, år, upplaga, sidor
2014. Vol. 59, nr 1, s. 99-109
Nyckelord [en]
Noninvasive genetic sampling, Inhibition, Degradation, Amplification success rate, Bones, Harvest mouse
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Naturvetenskap
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URN: urn:nbn:se:uu:diva-216724DOI: 10.1007/s13364-013-0144-yISI: 000329095800008OAI: oai:DiVA.org:uu-216724DiVA, id: diva2:691220
Tillgänglig från: 2014-01-27 Skapad: 2014-01-24 Senast uppdaterad: 2017-12-06Bibliografiskt granskad

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Bus, Magdalena M.

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