Bat predation by Barn Owls (Tyto alba) in central-eastern Argentina
We report the predation of bats by Barn owls (Tyto alba) in Entre Ríos province (~33.2º S-33.7º S), central-eastern Argentina. We studied pellet samples from 87 localities, registering 12 species of bats of two families. The best-represented taxa in the samples were the molossids Tadarida brasiliens...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/42108 |
| Acceso en línea: | http://hdl.handle.net/11336/42108 |
| Access Level: | acceso abierto |
| Palabra clave: | Bat predators Chiroptera Molossidae Tyto alba https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
| Sumario: | We report the predation of bats by Barn owls (Tyto alba) in Entre Ríos province (~33.2º S-33.7º S), central-eastern Argentina. We studied pellet samples from 87 localities, registering 12 species of bats of two families. The best-represented taxa in the samples were the molossids Tadarida brasiliensis (40.7%), Molossus molossus (8.7%), the vespertilionids Myotis spp. (19.67%) and Eptesicus furinalis (9.2%). Molossops temminckii was documented for the first time in the province. The average weight of bats consumed by Barn Owl ranged from ~4 g (Myotis spp.) to ~68 g (Eumops perotis). In terms of frequency, bats represented between 0.04 and 5.11% of the owl?s diet. Our results, together with literature records, suggest that bats tend to be captured more regularly in tropical to subtropical areas than in temperate to cold ones, and that they represent a minor item in the diet of Barn Owls. |
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