Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/104192
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Type: Journal article
Title: Historically low mitochondrial DNA diversity in koalas (Phascolarctos cinereus)
Author: Tsangaras, K.
Ávila-Arcos, M.
Ishida, Y.
Helgen, K.
Roca, A.
Greenwood, A.
Citation: BMC Genetics, 2012; 13(1):92-1-92-11
Publisher: BioMed Central
Issue Date: 2012
ISSN: 1471-2156
1471-2156
Statement of
Responsibility: 
Kyriakos Tsangaras, María C Ávila-Arcos, Yasuko Ishida, Kristofer M Helgen, Alfred L Roca and Alex D Greenwood
Abstract: BACKGROUND: The koala (Phascolarctos cinereus) is an arboreal marsupial that was historically widespread across eastern Australia until the end of the 19th century when it suffered a steep population decline. Hunting for the fur trade, habitat conversion, and disease contributed to a precipitous reduction in koala population size during the late 1800s and early 1900s. To examine the effects of these reductions in population size on koala genetic diversity, we sequenced part of the hypervariable region of mitochondrial DNA (mtDNA) in koala museum specimens collected in the 19th and 20th centuries, hypothesizing that the historical samples would exhibit greater genetic diversity. RESULTS: The mtDNA haplotypes present in historical museum samples were identical to haplotypes found in modern koala populations, and no novel haplotypes were detected. Rarefaction analyses suggested that the mtDNA genetic diversity present in the museum samples was similar to that of modern koalas. CONCLUSIONS: Low mtDNA diversity may have been present in koala populations prior to recent population declines. When considering management strategies, low genetic diversity of the mtDNA hypervariable region may not indicate recent inbreeding or founder events but may reflect an older historical pattern for koalas.
Keywords: Phascolarctidae
Description: Maria C Avila-Arcos
Rights: © Tsangaras et al.; licensee BioMed Central Ltd. 2012. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
RMID: 0030065466
DOI: 10.1186/1471-2156-13-92
Appears in Collections:Biochemistry publications

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