Genetic variation and structuring in the threatened koala populations of Southeast Queensland

Lee, Kristen E., Seddon, Jennifer M., Corley, Sean W., Ellis, William A. H., Johnston, Stephen D., de Villiers, Deidré L., Preece, Harriet J. and Carrick, Frank N. (2010) Genetic variation and structuring in the threatened koala populations of Southeast Queensland. Conservation Genetics, 11 6: 2091-2103. doi:10.1007/s10592-009-9987-9

Author Lee, Kristen E.
Seddon, Jennifer M.
Corley, Sean W.
Ellis, William A. H.
Johnston, Stephen D.
de Villiers, Deidré L.
Preece, Harriet J.
Carrick, Frank N.
Title Genetic variation and structuring in the threatened koala populations of Southeast Queensland
Journal name Conservation Genetics   Check publisher's open access policy
ISSN 1566-0621
Publication date 2010-12
Year available 2009
Sub-type Article (original research)
DOI 10.1007/s10592-009-9987-9
Volume 11
Issue 6
Start page 2091
End page 2103
Total pages 13
Place of publication Dordrecht, Netherlands
Publisher Kluwer Academic Publishers
Collection year 2011
Language eng
Formatted abstract
Habitat fragmentation can act to cause reproductive isolation between conspecifics and undermine species’ persistence, though most studies have reported the genetic condition of populations that have already declined to a very small size. We examined genetic diversity within the vulnerable, declining koala (Phascolarctos cinereus) population in Southeast Queensland, Australia to determine the genetic impact of ongoing threatening processes. Five hundred and twelve koalas from ten Southeast Queensland Local Government Areas on the mainland and one island were genotyped at six polymorphic microsatellite loci. Based on Bayesian cluster analysis incorporating spatial data, the regional koala population was subdivided into six clusters, with location of major roads and rivers appearing to be consistent with being barriers to gene flow. The distribution of mtDNA control region haplotypes identified distinct coastal and inland clades suggesting that historically there was gene flow between koalas along the coast (though little interchange between coastal and inland animals). In contrast, koalas from the Koala Coast (Brisbane City, Logan City and Redland Shire) were shown by microsatellite analysis to be genetically distinct from adjacent areas. It is likely, therefore, that more recent reductions in population size and restricted gene flow through urbanisation have contributed to the genetic differentiation of koalas in the Koala Coast region.
© Springer Science+Business Media B.V. 2009
Keyword Koalas
Habitat fragmentation
Mitochondrial DNA
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published online 15 September 2009

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Mined Land Rehabilitation Publications
Excellence in Research Australia (ERA) - Collection
Official 2011 Collection
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Citation counts: TR Web of Science Citation Count  Cited 30 times in Thomson Reuters Web of Science Article | Citations
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Created: Tue, 21 Sep 2010, 15:32:01 EST by Jon Swabey on behalf of Centre For Mined Land Rehabilitation