MULTIPLE CENTRAL PLACE FORAGING BY SPIDER MONKEYS - TRAVEL CONSEQUENCES OF USING MANY SLEEPING SITES
MULTIPLE CENTRAL PLACE FORAGING BY SPIDER MONKEYS - TRAVEL CONSEQUENCES OF USING MANY SLEEPING SITES
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DOI：
10.1007/bf00378668
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发表时间：
1989-01-01
期刊：
影响因子：
2.7
通讯作者：
MCLAUGHLIN, RL
中科院分区：
文献类型：
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作者：
CHAPMAN, CA;CHAPMAN, LJ;MCLAUGHLIN, RL
中心位置觅食模型假设动物返回到一个单一的中心位置，如巢穴，洞穴或睡眠地点。然而，许多动物在有限的中心位置中选择一个。这些动物可以被认为是多中心觅食者（FCPF），如果觅食者选择了靠近当前觅食区的睡眠地点，这种策略可以降低整体旅行成本。我们研究了选择的睡眠地点（中央地方）的蜘蛛猴（Ateles geoffroyi）在圣罗莎国家公园，哥斯达黎加在其觅食区的位置的社会。蜘蛛猴反复使用11棵睡觉的树，它们倾向于选择离它们当前觅食区最近的睡觉地点。将观察到的旅行距离与MCPF策略、单一中心地点策略和随机选择睡眠地点策略的预测距离进行比较，结果表明：（1）MCPF策略的旅行成本最低;（2）MCPF策略最能预测观察到的旅行距离。观察到的距离和MCPF模型预测的值之间的偏差增加后，喂养的网站已经使用了几天。这似乎是由于动物取样其家园范围，以找到新的喂养地点。
Central place foraging models assume that animals return to a single central place such as a nest, burrow, or sleeping site. Many animals, however choose between one of a limited number of central places. Such animals can be considered Multiple Central Place Foragers (FCPF), and such a strategy could reduce overall travel costs, if the forager selected a sleeping site close to current feeding areas. We examined the selection of sleeping sites (central places) by a community of spider monkeys (Ateles geoffroyi) in Santa Rosa National Park, Costa Rica in relation to the location of their feeding areas. Spider monkeys repeatedly used 11 sleeping trees, and they tended to choose the sleeping site closest to their current feeding area. A comparison of the observed travel distances with distances predicted for a MCPF strategy, a single central place strategy, and a strategy of randomly selecting sleeping sites demonstrated (1) that the MCPF strategy entailed the lowest travel costs, and (2) that the observed travel distance was best predicted by the MCPF strategy. Deviations between the observed distance travelled and the values predicted by the MCPF model increased after a feeding site had been used for several days. This appears to result from animals sampling their home range to locate new feeding sites.