New data on the endemic Patagonian long-clawed mouse Notiomys edwardsii (Rodentia: Cricetidae)

• Autores: Pardiñas, U.F.J.; Udrizar Sauthier, D.E.; Teta, P.; D'Elía, G.
• Año de publicación: 2008
• Idioma: inglés
• Tipo de recurso: artículo
• Fuente: Mammalia 2008;72(4):273-285
• Materia: Abrotrichini; Argentina; Chelemys; Geoxus; Pearsonomys; endemic species; genetic variation; geographical distribution; geographical variation; interpopulation variation; rodent; skull; Argentina; Patagonia; South America; Chelemys; Cricetidae; Geoxus; Notiomys; Notiomys edwardsii; Pearsonomys; Rodentia; Strigiformes
• Institución: Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales

The monotypic Notiomys is the most poorly-known genus of Abrotrichini, a recently erected tribe of South American sigmodontine rodents. Based on a large sample, mostly recovered from owl pellets but including trapped individuals, we refine the known geographic distribution of this mouse (providing 20 new contemporary recording localities and four fossil occurrences), relate this to the principal Patagonian environmental units, add new data on the type locality of the species, and comment on its conservation status. In addition, we present a detailed external and craniodental description and provide data showing geographic variation of some skull features. Finally, we provide preliminary data on genetic variation (cytochrome b gene sequences) that demonstrate the existence of a low degree of observed differentiation (ca. 0.7%) between the populations analyzed. © 2008 by Walter de Gruyter.