Effect of ambient temperature and energy demands on digestive functions in leaf-eared mice (Phyllotis darwini) from central Chile
Keywords: temperature, system, chile, animals, histology, physiology, weather, article, eating, season, function, muridae, seasons, animal, digestive
The leaf-eared mouse, Phyllotis darwini, is a nocturnal rodent inhabiting the semiarid and Mediterranean habitats of northern and central Chile. Previous observations suggested that in the field, individuals may change food intake according to seasonal changes in ambient temperature. We therefore anticipated that P. darwini should increase food intake in response to lower ambient temperature. As predicted, results of food trials and digestive measurements demonstrated that P. darwini increases food intake and assimilation at lower ambient temperatures but does not increase food mean retention time. At lower ambient temperatures, individuals increase digestive tract size thus improving body mass maintenance and perhaps survival during winter.
|Título de la Revista:||INTERNATIONAL JOURNAL OF BIOMETEOROLOGY|
|Fecha de publicación:||1997|
|Página de inicio:||23|