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Type: Journal article
Title: Combined mitochondrial and nuclear data enhance resolution of a rapid radiation of Australian rainbow skinks (Scincidae: Carlia)
Author: Dolman, G.
Hugall, A.
Citation: Molecular Phylogenetics and Evolution, 2008; 49(3):782-794
Publisher: Academic Press Inc Elsevier Science
Issue Date: 2008
ISSN: 1055-7903
Statement of
Gaynor Dolman and Andrew F. Hugall
Abstract: In contrast to low diversity seen in many Australian rainforest squamate genera, sclerophyll adapted groups--such as Carlia--show signs of faster diversification. Here we expand upon a previous single-locus mitochondrial DNA phylogenetic study of Carlia which described a major polytomy at an intermediate level of divergence. With additional mtDNA data, two nuclear intron loci and comprehensive taxonomic coverage, we provide support, congruent across loci, for the existence of three major clades. In doing so we recognise three genera for the 'Carlia group of skinks': clade 1, Carlia Gray, 1845; 2, Lygisaurus De Vis, 1884 (includes all species formerly known as Lygisaurus, and also includes C. parrhasius); 3, Liburnascincus Wells and Wellington, 1984 (consisting of three boulder-dwelling species). Remaining regions of low bootstrap and posterior probability support are associated with short internodes and apparent conflict among loci, as inferred by Partition Branch Support. Likelihood-based diversification-rate analysis rejects constant rate models, and indicates that Carlia underwent a period of relatively rapid diversification early in the evolution of the group, a rate 3-4 times faster than subsequent rates, and faster than comparable wet forest skinks.
Keywords: Mitochondria
Fructose-Bisphosphate Aldolase
DNA, Mitochondrial
RNA, Ribosomal, 16S
Likelihood Functions
Bayes Theorem
Sequence Alignment
Sequence Analysis, DNA
Evolution, Molecular
Genes, rRNA
Models, Genetic
Genetic Speciation
Genes, Mitochondrial
DOI: 10.1016/j.ympev.2008.09.021
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Appears in Collections:Aurora harvest
Earth and Environmental Sciences publications
Environment Institute publications

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