IDEA   23902
INSTITUTO DE DIVERSIDAD Y ECOLOGIA ANIMAL
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Phylogeography of Akodon simulator (Cricetidae, Sigmodontinae) from Argentina inferred from cytochrome b sequences
Autor/es:
LUIS I. FERRO; RAUL E. GONZÁLEZ-ITTIG ; CRISTINA N. GARDENAL ; RUBEN M. BARQUEZ
Lugar:
Reno, Nevada
Reunión:
Congreso; 92nd Annual Meeting of the American Society of Mammalogists; 2012
Institución organizadora:
American Society of Mammalogists
Resumen:
Akodon simulator, A. tartareus, A. glaucinus and A. varius are a group of species distributed in the Yungas forest of Bolivia and Argentina, so closely allied that have been frequently treated as synonymous, or subspecies, by different authors. The most widely used arrangement considers A. varius as a different species and A. simulator containing 3 subspecies distributed from southern Bolivia to the southernmost Yungas forest in NW Argentina: A. simulator tartareus (north); A. s. simulator (center); A. s. glaucinus (south). A recent study based on cytochrome b sequences recognizes them as different species. In the present study, the taxonomic sampling was enhanced in order to assess their specific limits and phylogenetic relationships. We added 30 cyt b sequences from 13 localities throughout the complete latitudinal range of the Argentine Yungas to the existing 10 GeneBank sequences. We found 34 haplotypes. Relationships among them were inferred from phylogenetic analyses (parsimony and likelihood). The trees obtained by both methods showed 2 major well-supported clades. One included haplotypes from S Bolivia and N Argentina (A. tartareus) as the sister of A. varius; this group was in turn sister to haplotypes from the southernmost localities (A. glaucinus). The other major clade showed no strong phylogeographic structure including haplotypes from the complete latitudinal range of the Argentine Yungas, some of them from the same localities clustered in the former clade.