Molecular systematics and phylogeography of the endemic Osgood's deermouse Osgoodomys banderanus (Rodentia: Cricetidae) in the lowlands of western Mexico.

摘要: Abstract Osgoodomys banderanus is a recognized and endemic rodent species of western Mexico, an area known for its high biodiversity number endemisms. Phylogeographical relationships within this taxon were analyzed based on mitochondrial (ND3, tRNA-Arginine, ND4L partial ND4) nuclear (GHR) nucleotide sequences. We obtained total 112 samples from 22 localities, covering the complete distribution species. Phylogenetic analyses using Maximum Likelihood Bayesian inference confirmed that monophyletic group. In addition, phylogenetic phylogeographic detected three major clades, which do not coincide with subspecies O. banderanus. The genetic lineages are clade (Nayarit, Jalisco northern Colima), central (Colima, Michoacan, Guerrero) eastern (central southern Guerrero). Genetic distances among clades (5–9%) substitutions (30–88) haplogroups high, especially in Mountain ranges such as Transmexican Volcanic Belt Sierra Madre del Sur, well Balsas River act geographical barriers Osgoodomys. Our results suggest presence independent species, need to be characterized morphologically confirm our hypothesis.