Resumen

RODRIGUEZ, Valeria A.  y  THEILER, Gerardo R.. Small mammals of Comodoro Rivadavia area (Chubut, Argentina). Mastozool. neotrop. [online]. 2007, vol.14, n.1, pp.97-100. ISSN 0327-9383.

A list of small mammals obtained in the region of Comodoro Rivadavia (Gulf San Jorge District, Patagonia Phytogeographic Province) is here included. Eighty caviomorfs, presumably Microcavia australis were captured. We also identified 1 marsupial (Lestodelphys halli) and 39 rodents: 19 Graomys griseoflavus (2n=36, 37 and 38), 1 Phyllotis xanthopygus (2n=38), 7 Reithrodon auritus (2n=34) and 12 Abrothrix olivaceus (2n=44). In the last species the diploid number of chromosome is different to previous reports (2n=52). This difference may be attributed to structural chromosomal polymorphism.

Palabras clave : Cytogenetic; Marsupials; Patagonia; Rodents.

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