Presencia de Holochilus chacarius Thomas, 1906 (Mammalia, Rodentia, Sigmodontinae) en el Delta Medio del río Paraná, Entre Ríos, Argentina

Paula Courtalón, Gastón Lo Coco, Roberto Bó


Holochilus chacarius Thomas, 1906 (Mammalia, Rodentia, Sigmodontinae) in Middle Delta of the Paraná River, Entre Ríos, Argentina. We describe the presence of Holochilus chacarius in the Victoria Island Zone included in the Middle Ddelta of the Paraná Rriver (Entre Rríos, Argentina). We collected and analysed pellets of the Striped Oowl (Pseudoscops clamator). All cranio dental items that were identified and measured belong
to the Cchaco Marsh Rrat. We postulate that its occurrence is becoming less casual and is associated with the high climate variability and extreme events of flooding and drought that have affected the area in recent years. Tthese events would favour the ingression and eventual establishment of these rodents in the study area.

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