A molecular phylogeny of rainbow skinks (Scincidae : Carlia): taxonomic and biogeographic implications

Stuart-Fox, D. M., Hugall, A. F. and Moritz, C. (2002) A molecular phylogeny of rainbow skinks (Scincidae : Carlia): taxonomic and biogeographic implications. Australian Journal of Zoology, 50 1: 39-51.


Author Stuart-Fox, D. M.
Hugall, A. F.
Moritz, C.
Title A molecular phylogeny of rainbow skinks (Scincidae : Carlia): taxonomic and biogeographic implications
Journal name Australian Journal of Zoology   Check publisher's open access policy
ISSN 0004-959X
Publication date 2002
Sub-type Article (original research)
DOI 10.1071/ZO01051
Volume 50
Issue 1
Start page 39
End page 51
Total pages 13
Place of publication Collingwood, Victoria, Australia
Publisher CSIRO Publishing
Collection year 2002
Language eng
Subject C1
270501 Animal Systematics, Taxonomy and Phylogeny
779999 Other
Abstract The phylogenetic relationships amongst 29 species of Carlia and Lygisaurus were estimated using a 726-base-pair segment of the protein-coding mitochondrial ND4 gene. Results do not support the recent resurrection of the genus Lygisaurus. Although most Lygisaurus species formed a single clade, this clade is nested within Carlia and includes Carlia parrhasius. Due to this new molecular evidence, and the paucity of diagnostic morphological characters separating the genera, Lygisaurus de Vis 1884 is re-synonymised with Carlia Gray 1845. Our analysis is also inconsistent with a previous suggestion that Lygisaurus timlowi should be removed to Menetia, a genus that is distantly related relative to outgroups used here. Intraspecific variation in Carlia is, in several instances, greater than interspecific distance. The most strikingly divergent lineages are found within C. rubrigularis, which appears to be paraphyletic, with southern populations more closely related to C. rhomboidalis than to northern populations of C. rubrigularis. The two C. rubrigularis-C. rhomboidalis lineages form part of a major polytomy at an intermediate level of divergence. Lack of resolution at this level, however, does not appear to be due to saturation or loss of phylogenetic signal. Rather, the polytomy probably reflects a period of relatively rapid diversification that occurred sometime during the Miocene.
Keyword Zoology
Mitochondrial-dna
Forest Refugia
Sequence
Diversification
Substitution
Topologies
Genes
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Biological Sciences Publications
 
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