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The genus Coleodactylus (Sphaerodactylinae, Gekkota) revisited: A molecular phylogenetic perspective

Rodrigues Geurgas, Silvia; Rodrigues, Miguel Trefaut; Moritz, Craig

Description

Nucleotide sequence data from a mitochondrial gene (16S) and two nuclear genes (c-mos, RAG-1) were used to evaluate the monophyly of the genus Coleodactylus, to provide the first phylogenetic hypothesis of relationships among its species in a cladistic framework, and to estimate the relative timing of species divergences. Maximum Parsimony, Maximum Likelihood and Bayesian analyses of the combined data sets retrieved Coleodactylus as a monophyletic genus, although weakly supported. Species were...[Show more]

dc.contributor.authorRodrigues Geurgas, Silvia
dc.contributor.authorRodrigues, Miguel Trefaut
dc.contributor.authorMoritz, Craig
dc.date.accessioned2015-12-13T22:54:55Z
dc.identifier.issn1055-7903
dc.identifier.urihttp://hdl.handle.net/1885/82311
dc.description.abstractNucleotide sequence data from a mitochondrial gene (16S) and two nuclear genes (c-mos, RAG-1) were used to evaluate the monophyly of the genus Coleodactylus, to provide the first phylogenetic hypothesis of relationships among its species in a cladistic framework, and to estimate the relative timing of species divergences. Maximum Parsimony, Maximum Likelihood and Bayesian analyses of the combined data sets retrieved Coleodactylus as a monophyletic genus, although weakly supported. Species were recovered as two genetically and morphological distinct clades, with C. amazonicus populations forming the sister taxon to the meridionalis group (C. brachystoma, C. meridionalis, C. natalensis, and C. septentrionalis). Within this group, C. septentrionalis was placed as the sister taxon to a clade comprising the rest of the species, C. meridionalis was recovered as the sister species to C. brachystoma, and C. natalensis was found nested within C. meridionalis. Divergence time estimates based on penalized likelihood and Bayesian dating methods do not support the previous hypothesis based on the Quaternary rain forest fragmentation model proposed to explain the diversification of the genus. The basal cladogenic event between major lineages of Coleodactylus was estimated to have occurred in the late Cretaceous (72.6 ± 1.77 Mya), approximately at the same point in time than the other genera of Sphaerodactylinae diverged from each other. Within the meridionalis group, the split between C. septentrionalis and C. brachystoma + C. meridionalis was placed in the Eocene (46.4 ± 4.22 Mya), and the divergence between C. brachystoma and C. meridionalis was estimated to have occurred in the Oligocene (29.3 ± 4.33 Mya). Most intraspecific cladogenesis occurred through Miocene to Pliocene, and only for two conspecific samples and for C. natalensis could a Quaternary differentiation be assumed (1.9 ± 1.3 Mya).
dc.publisherAcademic Press
dc.sourceMolecular Phylogenetics and Evolution
dc.subjectKeywords: mitochondrial DNA; RNA 16S; animal; article; Bayes theorem; biological model; classification; DNA sequence; gene; genetics; lizard; mitochondrial gene; mitochondrion; molecular evolution; oncogene; phylogeny; RNA gene; sequence homology; species differenc 16S; c-mos; Coleodactylus; Phylogeny; Pleistocene refuges; RAG-1; Sphaerodactylinae
dc.titleThe genus Coleodactylus (Sphaerodactylinae, Gekkota) revisited: A molecular phylogenetic perspective
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume49
dc.date.issued2008
local.identifier.absfor060399 - Evolutionary Biology not elsewhere classified
local.identifier.ariespublicationf5625xPUB10578
local.type.statusPublished Version
local.contributor.affiliationRodrigues Geurgas, Silvia , Universidade de Sao Paulo
local.contributor.affiliationRodrigues, Miguel Trefaut, Universidade de Sao Paulo
local.contributor.affiliationMoritz, Craig, College of Medicine, Biology and Environment, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue1
local.bibliographicCitation.startpage92
local.bibliographicCitation.lastpage101
local.identifier.doi10.1016/j.ympev.2008.05.043
local.identifier.absseo970106 - Expanding Knowledge in the Biological Sciences
dc.date.updated2015-12-11T11:07:07Z
local.identifier.scopusID2-s2.0-52449091851
local.identifier.thomsonID000259887700009
CollectionsANU Research Publications

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