Collective memory and spatial sorting in animal groups
Collective memory and spatial sorting in animal groups
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DOI：
10.1006/jtbi.2002.3065
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发表时间：
2002-09-07
影响因子：
2
通讯作者：
Franks, NR
中科院分区：
文献类型：
--
作者：
Couzin, ID;Krause, J;Franks, NR
我们提出了一个三维空间中群体形成的自组织模型，并用它来研究鱼群和鸟群等动物群体的空间动态。我们揭示了存在的主要群体水平的行为转变有关的微小变化，在个人层面的互动。此外，我们提出的第一个证据集体记忆在这样的动物群体（其中以前的历史群体结构的影响表现为个人的相互作用变化的集体行为）在一个群体从一种类型的集体行为过渡到另一种。然后，该模型被用来显示个人之间的差异如何影响群体结构，以及个人如何采用简单的，当地的经验法则，可以准确地改变他们的空间位置在一个组内（例如，移动到中心，前面，或外围）在没有信息的情况下，他们的当前位置在组内作为一个整体。这些结果被认为是在动物群体的进化和生态重要性的背景下。(C)2002爱思唯尔科技有限公司版权所有。
We present a self-organizing model of group formation in three-dimensional space, and use it to investigate the spatial dynamics of animal groups such as fish schools and bird flocks. We reveal the existence of major group-level behavioural transitions related to minor changes in individual-level interactions. Further, we present the first evidence for collective memory in such animal groups (where the previous history of group structure influences the collective behaviour exhibited as individual interactions change) during the transition of a group from one type of collective behaviour to another. The model is then used to show how differences among individuals influence group structure, and how individuals employing simple, local rules of thumb, can accurately change their spatial position within a group (e.g. to move to the centre, the front, or the periphery) in the absence of information on their current position within the group as a whole. These results are considered in the context of the evolution and ecological importance of animal groups. (C) 2002 Elsevier Science Ltd. All rights reserved.