Suprafamilial relationships among Rodentia and the phylogenetic effect of removing fast-evolving nucleotides in mitochondrial,exon and intron fragments |
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| Authors: | Claudine Montgelard Ellen Forty Véronique Arnal Conrad A Matthee |
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| Affiliation: | 1.Institut des Sciences de l'Evolution de Montpellier (UMR 5554),Université de Montpellier II,Montpellier cedex,France;2.Evolutionary Genomics Group, Department of Botany and Zoology,Stellenbosch University,Matieland, Stellenbosch,South Africa;3.Biogéographie et Ecologie des Vertébrés (EPHE),Centre d'Ecologie Fonctionnelle et Evolutive (UMR 5175),Montpellier cedex 5,France |
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| Abstract: | Background The number of rodent clades identified above the family level is contentious, and to date, no consensus has been reached on the basal evolutionary relationships among all rodent families. Rodent suprafamilial phylogenetic relationships are investigated in the present study using ~7600 nucleotide characters derived from two mitochondrial genes (Cytochrome b and 12S rRNA), two nuclear exons (IRBP and vWF) and four nuclear introns (MGF, PRKC, SPTBN, THY). Because increasing the number of nucleotides does not necessarily increase phylogenetic signal (especially if the data is saturated), we assess the potential impact of saturation for each dataset by removing the fastest-evolving positions that have been recognized as sources of inconsistencies in phylogenetics. |
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