Dating an impressive Neotropical radiation:. Molecular time estimates for the Sigmodontinae (Rodentia) provide insights into its historical biogeography

parada, a; Pardinas, UFJ; Salazar-Bravo, J; D'Elía G.; Palma RE

Abstract

With about 400 living species and 82 genera, rodents of the subfamily Sigmodontinae comprise one of the most diverse and more broadly distributed Neotropical mammalian clades. There has been much debate on the origin of the lineage or the lineages of sigmodontines that entered South America, the timing of entrance and different aspects of further diversification within South America. The ages of divergence of the main lineages and the crown age of the subfamily were estimated by using sequences of the interphotoreceptor retinoid binding protein and cytochrome b genes for a dense sigmodontine and muroid sampling. Bayesian inference using three fossil calibration points and a relaxed molecular clock estimated a middle Miocene origin for Sigmodontinae (similar to 12 Ma), with most tribes diversifying throughout the Late Miocene (6.9-9.4 Ma). These estimates together results of analyses of ancestral area reconstructions suggest a distribution for the most recent common ancestor of Sigmodontinae in Central-South America and a South American distribution for the most recent common ancestor of Oryzomyalia. (C) 2012 Elsevier Inc. All rights reserved.

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Título según WOS: Dating an impressive Neotropical radiation:. Molecular time estimates for the Sigmodontinae (Rodentia) provide insights into its historical biogeography
Título según SCOPUS: Dating an impressive Neotropical radiation: Molecular time estimates for the Sigmodontinae (Rodentia) provide insights into its historical biogeography
Título de la Revista: MOLECULAR PHYLOGENETICS AND EVOLUTION
Volumen: 66
Número: 3
Editorial: ACADEMIC PRESS INC ELSEVIER SCIENCE
Fecha de publicación: 2013
Página de inicio: 960
Página final: 968
Idioma: English
URL: http://linkinghub.elsevier.com/retrieve/pii/S1055790312004794
DOI:

10.1016/j.ympev.2012.12.001

Notas: ISI, SCOPUS