TY - JOUR
T1 - Dating an impressive Neotropical radiation
T2 - Molecular time estimates for the Sigmodontinae (Rodentia) provide insights into its historical biogeography
AU - Parada, Andrés
AU - Pardiñas, Ulyses F.J.
AU - Salazar-Bravo, Jorge
AU - D'Elía, Guillermo
AU - Palma, R. Eduardo
N1 - Funding Information:
Two anonymous reviewers made valuable comments on an earlier version of this contribution. Financial support for this work was provided by DIPUC and CONICYT fellowships and Grants FONDECYT 1110737 and 1100558, MECESUP AUS0805, NSF DEB061630, PICT 2008-547, PIP 2011-164, and from the American Philosophical Society and the Systematics Research Fund of the Systematics Association.
PY - 2013/3
Y1 - 2013/3
N2 - 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 (∼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.
AB - 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 (∼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.
KW - Cricetidae
KW - Diversification
KW - Great American Biotic Interchange
KW - Muroidea
KW - Relaxed molecular clock
KW - South America
UR - http://www.scopus.com/inward/record.url?scp=84873182617&partnerID=8YFLogxK
U2 - 10.1016/j.ympev.2012.12.001
DO - 10.1016/j.ympev.2012.12.001
M3 - Article
C2 - 23257216
AN - SCOPUS:84873182617
SN - 1055-7903
VL - 66
SP - 960
EP - 968
JO - Molecular Phylogenetics and Evolution
JF - Molecular Phylogenetics and Evolution
IS - 3
ER -