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Título: | Bright moonlight triggers natal dispersal departures |
Autor: | Penteriani, Vincenzo CSIC ORCID; Delgado, María del Mar CSIC ORCID; Kuparinen, Anna; Saurola, Pertti; Valkama, Jari; Salo, Eino; Toivola, Jere; Aebischer, Adrian; Arlettaz, Raphaël | Palabras clave: | Dispersal age Lunar cycle Moon phase Perceptual range Timing of dispersal Visual cues Bubo bubo |
Fecha de publicación: | 2014 | Editor: | Springer Nature | Citación: | Behavioral Ecology and Sociobiology, 68(5):743-747 (2104) | Resumen: | Upon leaving their natal area, dispersers are confronted with unknown terrains. Species-specific perceptual ranges (i.e. the maximum distance from which an individual can perceive landscape features) play a crucial role in spatial movement decisions during such wanderings. In nocturnal animals that rely on vision, perceptual range is dramatically enhanced during moonlight, compared to moonless conditions. This increase of the perceptual range is an overlooked element that may be responsible for the successful crossing of unfamiliar areas during dispersal. The information gathered from 143 radio-tagged eagle owl Bubo bubo juveniles in Spain, Finland and Switzerland shows that, although the decision to initiate dispersal is mainly an endogenous phenomenon determined by the attainment of a given age (∼6 months), dispersers leave their birthplace primarily under the best light conditions at night, i.e. when most of the lunar disc is illuminated. This sheds new light into the mechanisms that may trigger dispersal from parental territory. | Versión del editor: | http://dx.doi.org/10.1007/s00265-014-1687-x | URI: | http://hdl.handle.net/10261/96212 | DOI: | 10.1007/s00265-014-1687-x |
Aparece en las colecciones: | (EBD) Artículos |
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Behavioral Ecology and Sociobiology 2014.pdf | 143,64 kB | Adobe PDF | Visualizar/Abrir |
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