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Behavioural synchronization of large-scale animal movements - disperse alone, but migrate together?
Biological Reviews ( IF 11.0 ) Pub Date : 2016-05-06 , DOI: 10.1111/brv.12279
Julien Cote 1 , Greta Bocedi 2 , Lucie Debeffe 3, 4 , Magda E. Chudzińska 5 , Helene C. Weigang 6 , Calvin Dytham 7 , Georges Gonzalez 3 , Erik Matthysen 8 , Justin Travis 2 , Michel Baguette 9, 10 , A. J. Mark Hewison 3
Affiliation  

Dispersal and migration are superficially similar large‐scale movements, but which appear to differ in terms of inter‐individual behavioural synchronization. Seasonal migration is a striking example of coordinated behaviour, enabling animal populations to track spatio‐temporal variation in ecological conditions. By contrast, for dispersal, while social context may influence an individual's emigration and settlement decisions, transience is believed to be mostly a solitary behaviour. Here, we review differences in drivers that may explain why migration appears to be more synchronized than dispersal. We derive the prediction that the contrast in the importance of behavioural synchronization between dispersal and migration is linked to differences in the selection pressures that drive their respective evolution. Although documented examples of collective dispersal are rare, this behaviour may be more common than currently believed, with important consequences for eco‐evolutionary dynamics. Crucially, to date, there is little available theory for predicting when we should expect collective dispersal to evolve, and we also lack empirical data to test predictions across species. By reviewing the state of the art in research on migration and collective movements, we identify how we can harness these advances, both in terms of theory and data collection, to broaden our understanding of synchronized dispersal and its importance in the context of global change.

中文翻译:

大规模动物运动的行为同步——单独分散,但一起迁移?

扩散和迁移是表面上相似的大规模运动,但在个体间行为同步方面似乎有所不同。季节性迁徙是协调行为的一个突出例子,使动物种群能够跟踪生态条件的时空变化。相比之下,对于分散而言,虽然社会背景可能会影响个人的移民和定居决定,但人们认为暂时性主要是一种孤独的行为。在这里,我们回顾了驱动因素的差异,这些差异可以解释为什么迁移似乎比分散更同步。我们得出的预测是,分散和迁移之间行为同步重要性的对比与驱动它们各自进化的选择压力的差异有关。尽管记录在案的集体扩散的例子很少见,但这种行为可能比目前认为的更普遍,对生态进化动力学产生重要影响。至关重要的是,迄今为止,几乎没有可用的理论来预测我们应该期待集体扩散何时进化,而且我们也缺乏经验数据来测试跨物种的预测。通过回顾移民和集体运动研究的最新进展,我们确定了如何利用这些在理论和数据收集方面的进步,以拓宽我们对同步扩散及其在全球变化背景下的重要性的理解。几乎没有可用的理论来预测我们何时应该期望集体扩散会进化,而且我们也缺乏经验数据来测试跨物种的预测。通过回顾移民和集体运动研究的最新进展,我们确定了如何利用这些在理论和数据收集方面的进步,以拓宽我们对同步扩散及其在全球变化背景下的重要性的理解。几乎没有可用的理论来预测我们何时应该期望集体扩散会进化,而且我们也缺乏经验数据来测试跨物种的预测。通过回顾移民和集体运动研究的最新进展,我们确定了如何利用这些在理论和数据收集方面的进步,以拓宽我们对同步扩散及其在全球变化背景下的重要性的理解。
更新日期:2016-05-06
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