Initiators, leaders and recruitment mechanisms in the collective movements of damselfish
Initiators, leaders and recruitment mechanisms in the collective movements of damselfish
复制标题
雀鲷集体运动的发起者、领导者和招募机制
DOI：
10.1086/670242
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Sumpter DJT &LJ Morrell.
中科院分区：
文献类型：
--
作者：
Ward AJWW;Herbert-Read JE;Jordan LA;James R;Krause J;Ma Q;Rubenstein DI;Sumpter DJT &LJ Morrell.
解释个人行为和社会互动如何产生群体层面的结果并影响领导力等问题是理解集体行为的基础。在这里，我们研究了在集体运动之前和运动期间，假鲷鱼群体的个体和集体行为动力学。在出发前阶段，群体活动增加，直到集体运动发生。虽然这样的运动是由一个人促成的，但任何企图煽动集体运动的成功或失败并不仅仅取决于发起者的行为，而是取决于整个群体的行为。具体来说，在一次成功的入会尝试之前，群体比一次失败的入会尝试之前更活跃，凝聚力更低。在每次审判中，最努力发起集体运动的个人最终最有可能领导集体运动。领导与支配无关，但在试验之间是一致的。鱼群被招募到群体运动倡议的概率是已经招募的鱼群数量的近似线性函数。总的来说，这些结果与非选择性地方模仿主义是一致的，即离开的决定是基于一个群体，而不是任何特定的个人，是否准备离开。
Explaining how individual behavior and social interactions give rise to group-level outcomes and affect issues such as leadership is fundamental to the understanding of collective behavior. Here we examined individual and collective behavioral dynamics in groups of humbug damselfish both before and during a collective movement. During the predeparture phase, group activity increased until the collective movement occurred. Although such movements were precipitated by one individual, the success or failure of any attempt to instigate a collective movement was not solely dependent on this initiator’s behavior but on the behavior of the group as a whole. Specifically, groups were more active and less cohesive before a successful initiation attempt than before a failed attempt. Individuals who made the most attempts to initiate a collective movement during each trial were ultimately most likely to lead the collective movement. Leadership was not related to dominance but was consistent between trials. The probability of fish recruiting to a group movement initiative was an approximately linear function of the number of fish already recruited. Overall, these results are consistent with nonselective local mimetism, with the decision to leave based on a group’s, rather than any particular individual’s, readiness to leave.