Primer registro de carroñeo de Lycalopex gymnocercus (Carnivora: canidae) por Conepatus chinga (Carnivora: mephitidae) en el Partido de Patagones, Argentina
; Viladrich, Leonel Jeremías
; Birochio, Diego Enrique Otros responsables
Fecha
11/2025
Editorial
Sociedad Colombiana de Mastozoología
Revista
Mammalogy Notes
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2382-3704
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Los carroñeros cumplen un importante rol clave al consumir cadáveres, un recurso energético distribuido desigualmente. En el noreste patagónico argentino, varias especies de mamíferos nativos actúan como carroñeros facultativos, entre ellos el zorrino (Conepatus chinga). Su comportamiento carroñero ha sido escasamente documentado en la región, dado que se alimenta principalmente de invertebrados. En este estudio se reporta por primera vez la observación directa de un individuo de C. chinga alimentándose de la carcasa de un zorro gris (Lycalopex gymnocercus) aparentemente herido y atropellado, en un camino rural del Partido de Patagones (Buenos Aires). La interacción, registrada fotográficamente, ocurrió en agroecosistemas de agricultura extensiva, ganadería y fuerte reducción del monte nativo, en un período de sequía prolongada. El comportamiento incluyó alimentación, ocultamiento de la carcasa y marcación con orina. Esto sugiere probablemente mayor dependencia de recursos carroñeros ante la disminución de alimentos, especialmente durante el periodo reproductivo de la especie. La importancia del hallazgo radica en documentar por primera vez el consumo de un miembro del mismo gremio carroñero por C. chinga, conducta no reportada previamente, lo que abre interrogantes sobre su rol en ambientes alterados y resalta la necesidad de estudiar adaptaciones tróficas en paisajes transformados por el hombre.
Scavengers play a key ecological role by consuming carcasses, an energy resource unevenly distributed in the environment. In north-eastern Patagonian Argentina, several native mammal species act as facultative scavengers, among them the skunk (Conepatus chinga). Its scavenging behaviour has been scarcely documented in the region, as it mainly feeds on invertebrates. In this study, we report for the first time the direct observation of a C. chinga individual feeding on the carcass of a grey fox (Lycalopex gymnocercus), apparently injured and run over, on a rural road in Patagones County (Buenos Aires). The interaction, photographed in situ, took place in agroecosystems characterized by extensive agriculture, livestock farming, and a marked reduction of native forest, during a prolonged drought. The behaviour included feeding, concealment of the carcass, and marking with urine. This likely suggests greater reliance on carrion resources in response to food shortages, particularly during the species' reproductive period. The importance of this finding lies in documenting for the first time the consumption of a member of the same scavenger guild by C. chinga, a behavior not previously reported. This opens questions regarding its role in altered environments and highlights the need to study trophic adaptations in landscapes transformed by human activity.
Scavengers play a key ecological role by consuming carcasses, an energy resource unevenly distributed in the environment. In north-eastern Patagonian Argentina, several native mammal species act as facultative scavengers, among them the skunk (Conepatus chinga). Its scavenging behaviour has been scarcely documented in the region, as it mainly feeds on invertebrates. In this study, we report for the first time the direct observation of a C. chinga individual feeding on the carcass of a grey fox (Lycalopex gymnocercus), apparently injured and run over, on a rural road in Patagones County (Buenos Aires). The interaction, photographed in situ, took place in agroecosystems characterized by extensive agriculture, livestock farming, and a marked reduction of native forest, during a prolonged drought. The behaviour included feeding, concealment of the carcass, and marking with urine. This likely suggests greater reliance on carrion resources in response to food shortages, particularly during the species' reproductive period. The importance of this finding lies in documenting for the first time the consumption of a member of the same scavenger guild by C. chinga, a behavior not previously reported. This opens questions regarding its role in altered environments and highlights the need to study trophic adaptations in landscapes transformed by human activity.
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