Lack of predator-odor detection and avoidance by a songbird, the House Wren

作者: L Scott Johnson , Shannon M Murphy , Gordon W Parrish , None

DOI: 10.1111/J.1557-9263.2011.00317.X

关键词:

摘要: Recent studies suggest that songbirds have a better sense of smell than initially suspected. Work is now focused on determining how birds use their to enhance survival and reproduction. One question whether detect avoid predators. We examined the reaction House Wrens (Troglodytes aedon) odor potential predator in nests. On two different days nestling stage, we placed papers infused with urine anal scent gland material mustelid (American mink, Neovison vison), neutral odoriferous substance (cologne, garlic, or vinegar), water nest boxes. The proportion individuals hesitated enter boxes after first arrival did not differ significantly between treatments either day. also found no significant differences day time it took wrens boxes, spent entry, propensity stay brood young, latency return exposure treatments. Our results respond foreign odors cavities, including predator. In similar study (Amo et al. 2008. Functional Ecology 22: 289–293), adult Blue Tits (Cyanistes caeruleus) were less likely contained mustelid. explanation for this difference may Wrens. Alternatively, additionally, be inherently (or as result experience) more prone unusual or, specifically, predators Additional are needed determine extent which predators. RESUMEN Estudios recientes sugieren que las aves canoras tienen un mejor sentido del olfato lo previamente sospechado. Actualmente los trabajos se enfocan en determinar como utilizan el para mejorar su reproduccion y supervivencia. Es pertinente preguntarse si pueden utilizar detectar evitar depredadores. Examinamos la reaccion Reyezuelo aedon), al olor dejado nido por depredador potencial. En dos dias, durante ciclo de anidamiento, colocamos papel impregnado con orina glandulas anales mustelido (Neovison una sustancia (colonia, ajo o vinagre) agua cajas anidamiento. La proporcion individuos dudaron entrar caja llegada diferencio significativamente entre distintos tratamientos diferentes dias. Tampoco encontramos diferencias significativas dias exposicion olores, tiempo le tomo reyezuelos donde anidaban, permanecieron primera vez, mantuvieron dentro sobre polluelos, les regresar nidos luego ser expuestos vez tratamientos. Nuestros resultados detectaron respondieron incluyendo depredador. estudio 22:289–293) encontro Cyanistes caeruleus estuvieron muy cautelosos mustelido. Una posible explicacion es tenga Reyezuelo. Ademas, pudiera inherente estos (o resultado experiencias) mas susceptible olores inusuales, especificamente mustelidos son depredadores sus nidos. Se necesitan estudios adicionales extension

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