Activity patterns and feeding behaviour of the tree hyrax, Dendrohyrax arboreus, in the Parc National des Volcans, Rwanda

摘要: Activity patterns of Dendrohyrax arboreus were investigated by direct observation a habituated population in the Parc National des Volcans, Rwanda. Of seventeen animals caught, four males and thirteen females. population, 17% juveniles. Population estimates from transects indicated biomass 23.3 kg/ha. Radio-tracking ten individuals showed bimodal activity patterns, with peaks after dusk later night for during day Hyrax active 16% time. Feeding was dominant mature leaves Hagenia abyssinica most important food. Travelling within between trees occupied 4% time occurred predominantly daylight hours. Calling behaviour markedly seasonal, being pronounced dry season when hyrax called regularly early evening, often second late at night. During rains, calls infrequent unpredictable, tending to occur half There no correlation weather or lunar conditions calling behaviour. The ecological strategy tree terms metabolic rate, thermoregulation energy conservation is discussed light their feeding behaviour. Resume On etudie le schema d’activite de en observant directement une habituee du au Sur les dix-sept animaux attrapes, quatre etaient ma?les et treize, femelles. la Les estimations populations retirees indiquaient biomasse 23,3 Le radio-tracking dix revele un bimodal, avec pics apres crepuscule plus tard dans nuit pour pendant journee damans actifs temps. L’activite principale consistait se nourrir, feuilles ma?tures constituaient nourriture importante. temps passait circuler entre arbres, principalement heures claires journee. appels nettement saisonniers, ce comportement etant prononce saison seche ou? l’on entend s’appeler regulierement debut soiree, souvent aussi seconde fois nuit. Pendant pluies, peu frequents imprevisibles, ayant tendance s’entendre plutot partie Il n’y avait pas ou stade lunaire appels. On discute strategie ecologique arbres termes taux metabolique, d’energie, lumiere leurs activites leur alimentaire.