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Widespread primary, but geographically restricted secondary, human introductions of wall lizards, Podarcis muralis


Michaelides, SN and While, GM and Zajac, N and Uller, T, Widespread primary, but geographically restricted secondary, human introductions of wall lizards, Podarcis muralis, Molecular Ecology, 24, (11) pp. 2702-2714. ISSN 0962-1083 (2015) [Refereed Article]

Copyright Statement

Copyright 2015 2015 John Wiley & Sons Ltd.

DOI: doi:10.1111/mec.13206


Establishing the introduction pathways of alien species is a fundamental task in invasion biology. The common wall lizard, Podarcis muralis, has been widely introduced outside of its native range in both Europe and North America, primarily through escaped pets or deliberate release of animals from captive or wild populations. Here we use Bayesian clustering, approximate Bayesian computation (ABC) methods and network analyses to reconstruct the origin and colonization history of 23 non-native populations of wall lizards in England. Our analyses show that established populations in southern England originate from at least nine separate sources of animals from native populations in France and Italy. Secondary introductions from previously established nonnative populations were supported for eleven (47%) populations. In contrast to the primary introductions, secondary introductions were highly restricted geographically and appear to have occurred within a limited time frame rather than being increasingly common. Together, these data suggest that extant wall lizard populations in England are the result of isolated accidental and deliberate releases of imported animals since the 1970s, with only local translocation of animals from established non-native populations. Given that populations introduced as recently as 25 years ago show evidence of having adapted to cool climate, discouraging further translocations may be important to prevent more extensive establishment on the south coast of England.

Item Details

Item Type:Refereed Article
Keywords:colonization pathways, approximate Bayesian computation, networks, microsatellites, mitochondrial DNA, lizard
Research Division:Biological Sciences
Research Group:Evolutionary biology
Research Field:Biogeography and phylogeography
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:While, GM (Dr Geoff While)
ID Code:100333
Year Published:2015
Web of Science® Times Cited:27
Deposited By:Zoology
Deposited On:2015-05-12
Last Modified:2017-11-01

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