Speed-cohesion trade-offs in collective decision making in ants and the concept of precision in animal behaviour
Speed-cohesion trade-offs in collective decision making in ants and the concept of precision in animal behaviour
复制标题
DOI：
10.1016/j.anbehav.2013.03.010
复制
发表时间：
2013-06-01
期刊：
影响因子：
2.5
通讯作者：
Schlegel, T.
中科院分区：
文献类型：
--
作者：
Franks, N. R.;Richardson, T. O.;Schlegel, T.
在决策过程中，速度和准确性之间的权衡是众所周知的，而且往往是不可避免的，因为准确性取决于消息灵通，而收集信息需要时间。然而，相对而言，速度和凝聚力之间的权衡被忽视了，凝聚力是指一个群体作为一个单一实体在一起的程度，这是他们做出决策的结果。我们结合理论和实验表明，在决策系统中，速度-凝聚力权衡是速度-准确性权衡的自然补充，因此具有普遍重要性。然后，我们分析了32个岩蚁（Temnothorax albipennis）群体在保持集体决策准确性不变，但时间紧迫性不同的实验中的决策表现。这些实验首次揭示了集体决策中的适应性速度-凝聚力权衡以及如何实现这一权衡。根据不同的时间限制，群体可以以牺牲社会团结为代价快速决策，也可以以更大的凝聚力缓慢决策。我们讨论了统计和工程中使用的术语“精度”与“内聚”的相似性。这强调了在动物行为的其他领域，如性选择的运动展示，甚至鸟类鸣叫的某些方面，在决策制定和决策执行中，速度与凝聚力/精度权衡的普遍性。我们还认为，当一个群体中的个体需要同步他们的活动时，在集体导航、合作狩猎和某些逃跑行为中，可能会出现速度与精度之间的权衡。(C) 2013动物行为研究协会。Elsevier Ltd.出版。版权所有。
In decision making, speed-accuracy trade-offs are well known and often inevitable because accuracy depends on being well informed and gathering information takes time. However, trade-offs between speed and cohesion, that is the degree to which a group remains together as a single entity, as a result of their decision making, have been comparatively neglected. We combine theory and experimentation to show that in decision-making systems, speed-cohesion trade-offs are a natural complement to speed-accuracy trade-offs and are therefore of general importance. We then analyse the decision performance of 32 rock ant, Temnothorax albipennis, colonies in experiments in which accuracy of collective decision making was held constant, but time urgency varied. These experiments reveal for the first time an adaptive speed-cohesion trade-off in collective decision making and how this is achieved. In accord with different time constraints, colonies can decide quickly, at the cost of social unity, or they can decide slowly with much greater cohesion. We discuss the similarity between cohesion and the term precision as used in statistics and engineering. This emphasizes the generality of speed versus cohesion/precision trade-offs in decision making and decision implementation in other fields within animal behaviour such as sexually selected motor displays and even certain aspects of birdsong. We also suggest that speed versus precision trade-offs may occur when individuals within a group need to synchronize their activity, and in collective navigation, cooperative hunting and in certain escape behaviours. (C) 2013 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.