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首页> 外文期刊>American journal of primatology >Sleeping site selection and presleep behavior in wild pigtailed macaques
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Sleeping site selection and presleep behavior in wild pigtailed macaques

机译:野猪尾猕猴的睡眠部位选择和睡前行为

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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 (20.9 ± SD 4.9m) and high sleeping places (15.8 ± SD 4.3m), which may be an antipredator strategy. The choice of sleeping trees close to the last (146.7 ± SD 167.9m) or to the first (150.4 ± SD 113.0m) 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 trade-off 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 attack).
机译:有几种因素可能会控制非人类灵长类动物的睡眠部位选择和睡前行为,包括掠食风险和食物资源的位置。我们检查了这些因素对北部尾纤猕猴(猕猴leonina)的睡眠行为的影响。当跟随部队居住在考艾国家公园(泰国)游客中心周围的部队时,我们记录了每个睡眠部位,树木的物理特征和位置,个人在树上的位置,姿势和行为。我们收集了2009年4月至2010年11月之间154个晚上的数据。猴子更喜欢高大的睡觉树(20.9±SD 4.9m)和高睡觉的地方(15.8±SD 4.3m),这可能是一种反掠食者的策略。选择接近当天的最后一棵(146.7±SD 167.9m)或接近第一棵(150.4±SD 113.0m)采食树的睡眠树可以节省能量并降低猴子寻找食物时的捕食风险。同样,在靠近人类住区的地方选择睡眠地点会在水果稀缺时期简化人类食物的获取。最后,使用睡眠场所的时间模式(优先选择四个睡眠场所,但在连续的夜晚很少重复使用)可能是在需要几个睡眠场所之间进行权衡(减少掠食者的探测和旅行成本的折衷)。喂食地点),以及需要在知名地点睡觉(以确保在掠食者袭击时能够更快地逃脱)。

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