The Role of Avoidance and Learning Behaviours on the Formation and Movement of Biological Aggregations
The Role of Avoidance and Learning Behaviours on the Formation and Movement of Biological Aggregations
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DOI：
10.1051/mmnp/201510203
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发表时间：
2015-01-01
影响因子：
2.2
通讯作者：
Coulier, A.
中科院分区：
文献类型：
--
作者：
Eftimie, R.;Coulier, A.
交流是任何动物聚集的基础。然而，并不是所有的生物都以同样的方式交流。此外，个体不同的心理和生理特征也会导致不同个体之间的回避行为。这可能对大型生物聚集体的形成和结构产生影响。在这篇文章中，我们使用一个数学模型来研究亚种群的回避行为对整个种群空间动态的影响。我们表明，回避（即使是一小部分人）可以改变整个群体的时空模式，导致新的模式难以从没有回避的情况下预测。一般来说，这些模式显示了种群在不同聚集（空间上分开）或在同一聚集内的隔离。此外，我们还从数值上研究了个体可以学会容忍邻居的情况。在这种情况下，我们观察到一种意想不到的空间隔离，在移动的群体中，容忍邻居的个体和避开邻居的个体。
Communication forms the basis of any animal aggregation. However, not all organisms communicate the same way. Moreover, different psychological and physiological characteristics of individuals can lead to avoidance behaviours between different individuals. This can have implications on the formation and structure of large biological aggregations. In this article, we use a mathematical model to investigate the effects of avoidance behaviour by a subpopulation, on the spatial dynamics of the whole population. We show that avoidance (exhibited even by a small fraction of the population) can alter the spatio-temporal patterns of the whole groups, leading to new patterns difficult to predict from the case without avoidance. Generally, these patterns show the segregation of the populations into different aggregations (spatially separated) or inside the same aggregation. Moreover, we investigate numerically the situation where individuals can learn to tolerate their neighbours. In this case, we observe an unexpected spatial segregation inside moving aggregations of individuals that tolerate their neighbours and those that avoid their neighbours.