Proof of principle: the adaptive geometry of social foragers
Proof of principle: the adaptive geometry of social foragers
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DOI：
10.1016/j.anbehav.2016.07.011
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发表时间：
2016-09-01
期刊：
影响因子：
2.5
通讯作者：
Henzi, S. Peter
中科院分区：
文献类型：
--
作者：
Dostie, Marcus J.;Lusseau, David;Henzi, S. Peter
一个动物群体的空间结构应该反映其成员对环境突发事件的反应能力。在捕食风险下，个体在固定群体中的最佳位置是群体的中心。最终的群体几何形状是圆形的，个人的位置取决于竞争能力。如果它损害了有效的觅食，一个长期存在的问题是，这种拓扑结构是否可以适应性地变形，以响应当地的资源分布。在这里，我们表明，形状所描述的一组觅食的chacma狒狒，木瓜hamadryas ursinus，响应于栖息地结构的变化，这促进觅食效率，同时保存捕食风险相关的分布组成员。成年狒狒通过调整个体间距离和沿着运动路线的相对位置，以提高不受阻碍地获得草原中发现的小而分散的食物的能力。占优势的动物占据了群体的中心，而且这样做与群体的几何形状无关。我们的研究结果表明，空间明确的数据可以解决紧急组水平的属性直接。这种全球方法补充了对个人行动的分析，并可以帮助指导寻找潜在的本地互动规则。(C)2016动物行为研究协会。由爱思唯尔有限公司出版。保留所有权利。
The spatial configuration of a group of animals should reflect the ability of its members to respond to environmental contingencies. Under predation risk, the optimal position for an individual in a stationary group is at the group's centre. The resulting group geometry is circular, with individual placement determined by competitive ability. Where it compromises efficient foraging, a long-standing question has been whether this topology can deform adaptively in response to the local distribution of resources. Here we show that the shape described by a group of foraging chacma baboons, Papio hamadryas ursinus, changes in response to habitat structure and that this promotes foraging efficiency while conserving the predation-risk-related distribution of group members. Adult baboons improve unimpeded access to the small, dispersed food items found in grassland by adjusting both their interindividual distances and their relative positions along the line of movement in order to forage in rank formation. Dominant animals occupy the centre of the group and do so regardless of its geometry. Our results demonstrate that spatially explicit data can address emergent group level properties directly. This global approach complements analyses of individual action and can help direct the search for potential local rules of interaction. (C) 2016 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.