Mamíferos de la Reserva Valle del Cuña Pirú, Misiones, Argentina
; Pardiñas, Ulises Francisco J.
; Podestá, Darío Hector
; Abramson, Raúl Otros responsables
Fecha
06/2011
Editorial
Conicet. Cricyt. Instituto Argentino de Investigación de las Zonas Áridas. Unidad de Zoología y Ecología Animal
Revista
Mastozoología Neotropical
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ISSN
0327-9383
eISSN
1666-0536
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Resumen
Se exponen los resultados del relevamiento de la mastofauna de la Reserva Privada de Usos Múltiples Valle del Cuña Pirú (Misiones, Argentina). El área de estudio corresponde al curso medio del arroyo Cuña Pirú, en cercanías de Aristóbulo del Valle, donde se interdigitan comunidades fitogeográficas del Distrito de las Selvas Mixtas con el Distrito de los Campos, ambos incluidos en el Bosque Atlántico del Alto Paraná. Nueve trabajos de campo han revelado la presencia de 58 especies nativas y tres exóticas, incluidas en 24 familias y 10 órdenes. Las familias con mayor riqueza fueron los Cricetidae (11 especies) y Didelphidae (siete especies); los quirópteros estuvieron subrepresentados por sesgos del muestreo. Especies propias de ambientes abiertos del sur de Misiones y norte de Corrientes, como Cavia aperea, Lutreolina crassicaudata y Necromys lasiurus, se registraron únicamente en campos cultivados y parches insularizados de pastizales naturales. Podrían considerarse extirpadas del área Myrmecophaga tridactyla y Pteronura brasiliensis. Los mamíferos constituyen un importante recurso alimentario para los núcleos aborígenes del área (comunidades Mbyá), pero también están sometidos a una notable actividad cinegética por parte del resto de los pobladores. La presión de caza, junto con la fragmentación de los ambientes selváticos, podría aumentar los procesos de extinción en el ámbito local, particularmente para algunos grandes mamíferos (e. g., Tapirus terrestris, Panthera onca)
Here we present the results of surveys conducted at the Reserva Privada de Usos Múltiples Valle del Cuña Pirú (Misiones, Argentina) with the objective to assess the diversity of mammals in this area. The study area is placed at the middle part of the course of arroyo Cuña Pirú, near Aristóbulo del Valle, where phytogeographical communities of Selvas Mixtas and Campos districts intermix, both belonging to the Upper Paraná Atlantic Forest. Nine field works allowed us to register 58 native and three exotic species, included in 24 families and 10 orders. The richnest recorded families were Cricetidae (11 species) and Didelphidae (7 species); the bats were under-represented due to methodological samping bias. Typical species of open environments from southern Misiones and northern Corrientes, such as Cavia aperea, Lutreolina crassicaudata, and Necromys lasiurus, were recorded only in cultivated fields and fragmented patches of natural grasslands. We propose that Myrmecophaga tridactyla and Pteronura brasiliensis should be considered as extirpated from this area. The mammals constitute an important food resource for local aboriginal groups that inhabit the reserve (Mbyá communities), but they are also under severe hunting pressure by most of local dwellers. Hunting activities added to habitat fragmentation could increase extinctions at local scale, specifically for some of the larger mammals (e. g., Tapirus terrestris, Panthera onca).
Here we present the results of surveys conducted at the Reserva Privada de Usos Múltiples Valle del Cuña Pirú (Misiones, Argentina) with the objective to assess the diversity of mammals in this area. The study area is placed at the middle part of the course of arroyo Cuña Pirú, near Aristóbulo del Valle, where phytogeographical communities of Selvas Mixtas and Campos districts intermix, both belonging to the Upper Paraná Atlantic Forest. Nine field works allowed us to register 58 native and three exotic species, included in 24 families and 10 orders. The richnest recorded families were Cricetidae (11 species) and Didelphidae (7 species); the bats were under-represented due to methodological samping bias. Typical species of open environments from southern Misiones and northern Corrientes, such as Cavia aperea, Lutreolina crassicaudata, and Necromys lasiurus, were recorded only in cultivated fields and fragmented patches of natural grasslands. We propose that Myrmecophaga tridactyla and Pteronura brasiliensis should be considered as extirpated from this area. The mammals constitute an important food resource for local aboriginal groups that inhabit the reserve (Mbyá communities), but they are also under severe hunting pressure by most of local dwellers. Hunting activities added to habitat fragmentation could increase extinctions at local scale, specifically for some of the larger mammals (e. g., Tapirus terrestris, Panthera onca).
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