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Type: Journal article
Title: Diversification patterns of pebble-mimic dragons are consistent with historical disruption of important habitat corridors in arid Australia
Author: Shoo, L.
Rose, R.
Doughty, P.
Austin, J.
Melville, J.
Citation: Molecular Phylogenetics and Evolution, 2008; 48(2):528-542
Publisher: Academic Press Inc Elsevier Science
Issue Date: 2008
ISSN: 1055-7903
Statement of
L.P. Shoo, R. Rose, P. Doughty, J.J. Austin and J. Melville
Abstract: The pebble-mimic dragon lineage of Tympanocryptis is widely distributed in the stony, or ‘gibber’, deserts of Australia but is noticeably absent from intersecting areas of sand deserts. Past fluctuations in the extent and configuration of sandy desert habitat barriers are likely to have been an import factor promoting genetic differentiation in this group. We sequenced a 1400 bp region of mitochondrial DNA and a 1400 bp nuclear gene (RAG-1) to investigate phylogeographic structuring of species of pebble-mimic dragons. Our topology indicates an early split in this lineage between eastern and western parts of the arid zone that probably dates to the mid-Miocene. This split corresponds directly with large expanses of contemporary sandy habitat in the form of Great Sandy and Great Victoria Deserts. Our data indicate that this biogeographic barrier established very early on in the development of the arid zone and has persisted to present. Additional genetic structuring in the absence of recognized barriers suggests that an expanded view of potential habitat barriers in the arid zone is required
Keywords: Cell Nucleus; Animals; Iguanas; DNA, Mitochondrial; Sequence Analysis, DNA; Ecosystem; Phylogeny; Genes, RAG-1; Geography; Molecular Sequence Data; Australia
RMID: 0020084822
DOI: 10.1016/j.ympev.2008.03.022
Description (link):
Appears in Collections:Earth and Environmental Sciences publications
Australian Centre for Ancient DNA publications
Environment Institute Leaders publications

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