Molecular dating and phylogenetic relationships among Teiidae (Squamata) inferred by molecular and morphological data

We present a phylogenetic analysis of teiid lizards based on partitioned and combined analyses of 12S and 16S mitochondrial DNA sequences, and morphological and ultrastructural characters. There were some divergences between 12S and 16S cladograms, but phylogenetic analyses of the combined molecular...

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Veröffentlicht in:Molecular phylogenetics and evolution 2007-10, Vol.45 (1), p.168-179
Hauptverfasser: Giugliano, Lilian Gimenes, Collevatti, Rosane Garcia, Colli, Guarino Rinaldi
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container_title Molecular phylogenetics and evolution
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creator Giugliano, Lilian Gimenes
Collevatti, Rosane Garcia
Colli, Guarino Rinaldi
description We present a phylogenetic analysis of teiid lizards based on partitioned and combined analyses of 12S and 16S mitochondrial DNA sequences, and morphological and ultrastructural characters. There were some divergences between 12S and 16S cladograms, but phylogenetic analyses of the combined molecular data corroborated the monophyly of Tupinambinae, Teiinae, and “cnemidophorines”, with high support values. The total combined analysis (molecules + morphology) produced similar results, with well-supported Teiinae and “cnemidophorines”. We present an evolutionary scenario for the evolution of Teiidae, based on molecular dating of evolutionary events using Bayesian methods, ancestral areas analysis, the fossil record, the geographic distribution of genera, and environmental and geologic changes during the Tertiary. According to this scenario, (1) all current teiid genera, except Aspidoscelis, originated in isolation in South America; (2) most teiid genera originated during the Eocene, a period characterized by savanna expansion in South America; and (3) Cnemidophorus originated in South America, after which some populations dispersed to Central America during the Late Miocene.
doi_str_mv 10.1016/j.ympev.2007.05.017
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subjects Animals
Cnemidophorus
Evolution, Molecular
Evolutionary scenario
Lacertilia
Lizards - anatomy & histology
Lizards - classification
Lizards - genetics
Molecular dating
mtDNA
Phylogeny
RNA, Ribosomal - analysis
RNA, Ribosomal - genetics
RNA, Ribosomal, 16S - analysis
RNA, Ribosomal, 16S - genetics
Sequence Analysis, DNA
Squamata
Teiidae
Time Factors
title Molecular dating and phylogenetic relationships among Teiidae (Squamata) inferred by molecular and morphological data
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