Molecular phylogenetics of mouse opossums: New findings on the phylogeny of Thylamys (Didelphimorphia, Didelphidae)

R. Eduardo Palma, Dusan Boric-Bargetto, J. Pablo Jayat, David A. Flores, Horacio Zeballos, Víctor Pacheco, Ricardo A. Cancino, Fernando D. Alfaro, Enrique Rodríguez-Serrano, Ulyses F.J. Pardiñas

Resultado de la investigación: Contribución a una revistaArtículo

15 Citas (Scopus)

Resumen

The mouse opossums of the genus Thylamys constitute a group of species mainly adapted to open xeric-like habitats and restricted to the southern portion of South America. We used molecular data (mitochondrial and nuclear sequences) to evaluate the phylogenetic and biogeographical relationships of all currently known living species of the genus, recognizing a new taxon from the middle and high elevations of the Peruvian Andes and evaluating the phylogenetic structuring within T. pallidior and T. elegans, as well as the validity of T. sponsorius, T. cinderella and T. tatei, and the haplogroups recognized within T. pusillus. Our results confirm the monophyly of the genus and that the Caatinga and the Cerrado inhabitants Thylamys karimii and T. velutinus are the most basal species in the radiation of Thylamys. We also calibrated a molecular clock which hypothesized a time of origin of the genus of about 24 My, with most species differentiating in middle and late Miocene and Plio-Pleistocene times of South America.
Idioma originalInglés estadounidense
Páginas (desde-hasta)217-234
Número de páginas18
PublicaciónZoologica Scripta
Volumen43
N.º3
DOI
EstadoPublicada - 1 ene 2014

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