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Abstract
Presence of the genus Ctenomys (Rodentia, Ctenomyidae) in northeastern Buenos Aires province, Argentina. The genus Ctenomys found at the locality of Lima, in the northeastern region of Buenos Aires province, is reported in this paper. The finding of specimens of this genus is located more than 150 kilometers to the North of previous mentions for the province, being possible its adcription to C. talarum or to any other species from the mesopotamian region of Argentina. Previous papers indicate the presence of fossil Ctenomys in several localities in northern Buenos Aires province, and suggest that the genus disappeared from this region before the XIXth century. Thus, the record of living Ctenomys in northeastern Buenos Aires province provide new interesting clues about the biogeography of this genus in the area.
Highlights
En el norte de la provincia de Buenos Aires se interdigitan numerosas y diversas formaciones boscosas y comunidades higrófilas de bajíos ribereños, típicas de las provincias fitogeográficas Paranense, del Espinal y Pampeana (Cabrera, 1976)
MATERIALES Y MÉTODOS Los mamíferos colectados o avistados en los alrededores de Lima son Hydrochoerus hydrochaeris (Linnaeus, 1766) (Rodentia: Caviidae: Hydrochoerinae), Cavia aperea Erxleben, 1777 (Rodentia: Caviidae: Caviinae), Lepus capensis Linnaeus, 1758 (Lagomorpha: Leporidae), Galictis cuja (Molina, 1782) (Carnivora: Mustelidae), Leopardus geoffroyi (Carnivora: Felidae) y Pseudalopex gymnocercus (Fischer, 1814) (Carnivora: Canidae), además de Ctenomys sp., el cual constituye el objetivo del presente trabajo
La ausencia de registros previos para el género en el noreste bonaerense, a pesar de intensivos muestreos, y la movilidad casi nula que presentan los individuos de estas especies sobre la superficie, hacen suponer que la presencia de Ctenomys ha pasado desapercibida en muestreos recientes
Summary
En el norte de la provincia de Buenos Aires se interdigitan numerosas y diversas formaciones boscosas y comunidades higrófilas de bajíos ribereños, típicas de las provincias fitogeográficas Paranense, del Espinal y Pampeana (Cabrera, 1976). Los registros fósiles de Ctenomys son numerosos en el norte de la provincia de Buenos Aires, donde se han hallado restos para el Plioceno
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