From compromise to leadership in pigeon homing
From compromise to leadership in pigeon homing
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DOI：
10.1016/j.cub.2006.08.087
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发表时间：
2006-11-07
期刊：
影响因子：
9.2
通讯作者：
Guilford, Tim
中科院分区：
文献类型：
--
作者：
Biro, Dora;Sumpter, David J. T.;Guilford, Tim
在群体中旅行的动物所面临的一个核心问题是如何整合群体成员的导航决策，特别是当成员无法评估哪些个体最了解或有冲突的信息或利益时。现在已知，猪猡忠实地重述了它们各自不同的回家习惯路线[6-8]，这为研究在不同水平的个体间冲突下飞行过程中的集体决策提供了一个新的范式。使用高精度的GPS跟踪成对的鸽子，我们发现，如果两只鸟的方向偏好之间的冲突很小，个体会平均它们的路线，而如果冲突超过临界阈值，要么这对鸽子分裂，要么其中一只鸟成为领导者。对这种成对决策的建模表明，妥协和领导这两种结果都可以从同一套简单的行为规则中产生。成对的鸟也比组成它们的个体更有效率地航行，尽管领导者不一定是更有效率的鸟。在鸟类和其他动物大规模迁徙的背景下，我们的研究结果表明，简单的自组织规则可以产生提高决策准确性的行为，从而使群体中的个体受益[3，9，10]。
A central problem faced by animals traveling in groups is how navigational decisions by group members are integrated, especially when members cannot assess which individuals are best informed or have conflicting information or interests [1-5]. Pigeons are now known to recapitulate faithfully their individually distinct habitual routes home [6-8], and this provides a novel paradigm for investigating collective decisions during flight under varying levels of interindividual conflict. Using high-precision GPS tracking of pairs of pigeons, we found that if conflict between two birds' directional preferences was small, individuals averaged their routes, whereas if conflict rose over a critical threshold, either the pair split or one of the birds became the leader. Modeling such paired decision-making showed that both outcomes-compromise and leadership-could emerge from the same set of simple behavioral rules. Pairs also navigated more efficiently than did the individuals of which they were composed, even though leadership was not necessarily assumed by the more efficient bird. In the context of mass migration of birds and other animals, our results imply that simple self-organizing rules can produce behaviors that improve accuracy in decision-making and thus benefit individuals traveling in groups [3, 9, 10].