A new record and an evaluation of the phylogenetic relationships of Abrothrix olivaceus markhami (Rodentia : Sigmodontinae)

Rodriguez-Serrano, E; Hernández CE; Palma RE

Abstract

Recent phylogenetic studies of the subfamily of cricetid rodents (Sigmodntinae) have validated the taxonomic classification at the tribal level of the Andean Clade. It is possible that some endemic species from Patagonian South America are part of this new tribe, but previous studies have not evaluated this hypothesis due to the difficulty of obtaining samples. In this study, we evaluate the phylogenetic relationships of Akodon markhami (Pine, 1973), a species endemic to the Chilean Patagonia, using individuals recently captured at the type locality of this taxon. Our results indicate that this form of Akodon corresponds to a subspecies of Abrothrix olivaceus, and should be incorporated into the Andean Clade as a geographic race of this widely distributed species on the South American continent. Based on a molecular clock calibration, we dated the origin of this geographic race during the last glacial cycles of the Quaternary, as the result of a vicariant process. © 2007 Deutsche Gesellschaft für Säugetierkunde.

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Título según WOS: A new record and an evaluation of the phylogenetic relationships of Abrothrix olivaceus markhami (Rodentia : Sigmodontinae)
Título según SCOPUS: A new record and an evaluation of the phylogenetic relationships of Abrothrix olivaceus markhami (Rodentia: Sigmodontinae)
Título de la Revista: MAMMALIAN BIOLOGY
Volumen: 73
Número: 4
Editorial: Urban & Fischer Verlag
Fecha de publicación: 2008
Página de inicio: 309
Página final: 317
Idioma: English
URL: http://linkinghub.elsevier.com/retrieve/pii/S161650470700167X
DOI:

10.1016/j.mambio.2007.10.003

Notas: ISI, SCOPUS