COMPARATIVE LOCOMOTOR ECOLOGY OF GIBBONS AND MACAQUES - SELECTION OF CANOPY ELEMENTS FOR CROSSING GAPS
COMPARATIVE LOCOMOTOR ECOLOGY OF GIBBONS AND MACAQUES - SELECTION OF CANOPY ELEMENTS FOR CROSSING GAPS
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DOI：
10.1002/ajpa.1330930409
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发表时间：
1994-04-01
影响因子：
2.8
通讯作者：
LEIGHTON, M
中科院分区：
文献类型：
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作者：
CANNON, CH;LEIGHTON, M
为了研究树栖运动生态学的功能问题，对婆罗洲敏捷长臂猿（Hylobates agilis）和长尾猕猴（Macaca fasciculis）对树冠元素的选择进行了对比，并将其与运动行为相关。这两个物种，在某些情况下，猕猴的性别，在大多数结构元素的使用上有所不同。尽管这两个物种最常在主树冠层中迁徙（猕猴：56%，长臂猿：48%），但长臂猿强烈喜欢突现的树冠层，并且在较大的树木（48 与 26 cm 胸径）中比猕猴（距地面 31 与 23 m）移动得更高。与长臂猿相比，猕猴更喜欢跨越更窄的间隙（50% 属于 0.1-0.5 m 宽）（42% 属于 1.6-3.0 m 宽），这与每次跨越的最大间隙宽度一致（猕猴为 3.5 m，长臂猿为 9 m）。猕猴只能穿过主冠层中遇到的间隙的 12%，而其他四层中每一层的间隙则小于 5%。相比之下，长臂猿的所有层都显得相对连续。在旅行段的开始和结束时不成比例地使用专门的运动模式，进一步表明行为是围绕间隙交叉组织的。定义了一个模型，即感知连续性指数（PCI），该模型根据物种可以跨越的间隙百分比、间隙频率以及每个冠层中连续冠层结构的中值长度来预测每个物种冠层层的相对使用情况。结果支持这样的假设：运动行为和选择树冠层进行旅行的策略受到树木之间的宽阔间隙的强烈限制，并且最终基于对远距离点之间有效的直线旅行的选择。 (C) 1994 年 Wiley-Liss 公司
To examine functional questions of arboreal locomotor ecology, the selection of canopy elements by Bornean agile gibbons (Hylobates agilis) and long-tailed macaques (Macaca fascicularis) was contrasted, and related to locomotor behaviors. The two species, and in some cases, the macaque sexes, varied in their use of most structural elements. Although both species traveled most frequently in the main canopy layer (macaques: 56%, gibbons: 48%), the gibbons strongly preferred the emergent canopy layer and traveled higher than the macaques (31 vs. 23 m above ground) in larger trees (48 vs. 26 cm dbh). Macaques preferred to cross narrower gaps (50% were in the class 0.1-0.5 m wide) than gibbons (42% were 1.6-3.0 m wide), consistent with the maximum gap width each crossed (3.5 m for macaques, 9 m for gibbons). Macaques could cross only 12% of the gaps encountered in the main canopy, and < 5% of the gaps in each of the other four layers. In contrast, all layers appear relatively continuous for gibbons. Specialized locomotor modes were used disproportionately at the beginning and end of travel segments, further indicating that behavior was organized around gap crossings. A model is defined, the Perceived Continuity Index (PCI), which predicts the relative use of canopy strata for each species, based on the percentage of gaps a species can cross, the frequency of gaps, and median length of continuous canopy structure in each canopy layer. The results support the hypothesis that locomotor behaviors, and strategies of selecting canopy strata for travel, are strongly constrained by wide gaps between trees and are ultimately based on selection for efficient direct line travel between distant points. (C) 1994 Wiley-Liss, Inc.