Reference : Sleeping Site Selection and Presleep Behavior in Wild Pigtailed Macaques
Scientific journals : Article
Social & behavioral sciences, psychology : Animal psychology, ethology & psychobiology
Life sciences : Zoology
Sleeping Site Selection and Presleep Behavior in Wild Pigtailed Macaques
Albert, Aurélie mailto [Université de Liège - ULg > > > Doct. sc. (biol. orga. & écol. - Bologne)]
Savini, Tommaso mailto [King Mongkut’s University of Technology Thonburi (Bangkok) > School of Bioresources and Technology > Conservation Ecology Program > >]
Huynen, Marie-Claude mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale >]
American Journal of Primatology
Wiley Liss, Inc.
Yes (verified by ORBi)
[en] predation avoidance ; food resources ; Khao Yai National Park ; Thailand ; Macaca leonina
[en] Several factors are likely to control sleeping site selection and presleep behavior in nonhuman primates, including predation risk and location of food resources. We examined the effects of these factors on the sleeping behavior of northern pigtailed macaques (Macaca leonina). While following a troop living in the surroundings of the Visitor Center of Khao Yai National Park (Thailand), we recorded the physical characteristics and location of each sleeping site, tree, the individuals’ place in the tree, posture, and behavior. We collected data for 154 nights between April 2009 and November 2010. The monkeys preferred tall sleeping trees (20.97SD 4.9 m) and high sleeping places (15.87SD 4.3 m), which may be an antipredator strategy. The choice of sleeping trees close to the last (146.77SD 167.9 m) or to the first (150.47SD 113.0 m) feeding tree of the day may save energy and decrease predation risk when monkeys
are searching for food. Similarly, the choice of sleeping sites close to human settlements eases the access to human food during periods of fruit scarcity. Finally, the temporal pattern of use of sleeping sites, with a preference for four of the sleeping sites but few reuses during consecutive nights, may be a tradeoff between the need to have several sleeping sites (decreasing detection by predators and travel costs to feeding sites), and the need to sleep in well-known sites (guaranteeing a faster escape in case of predator
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