Ant groups optimally amplify the effect of transiently informed individuals.
Ant groups optimally amplify the effect of transiently informed individuals.
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DOI：
10.1038/ncomms8729
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发表时间：
2015-07-28
影响因子：
16.6
通讯作者：
Feinerman O
中科院分区：
文献类型：
--
作者：
Gelblum A;Pinkoviezky I;Fonio E;Ghosh A;Gov N;Feinerman O
为了协作地运输大的负载，重要的是载体在它们的努力中一致并且对齐它们的力。行为从众的一个缺点是，它可能会降低群体对外部信息的反应。结合实验和理论，我们展示了蚂蚁如何优化集体运输。在单蚂蚁规模上，优化源于平衡个性和顺从性的决策规则。宏观上，这些规则使系统在随机行走和弹道运动之间的过渡中保持平衡，在这种过渡中，对单个知情蚂蚁的转向的集体响应最大化。我们把这个峰与相变时磁化率的发散联系起来。我们的理论模型预测，蚂蚁负载系统可以通过这个介观系统的临界点，通过改变其大小过渡，我们目前的实验支持这些预测。我们的研究结果表明，有效的群体水平的过程可以产生从个人为基础的知识的瞬时放大。 群体一致性对集体行为至关重要，但可能会降低对外部线索的整体反应。在这里，作者表明，承载蚂蚁群体的功能在弹道和随机运动之间的过渡，其中知情的个人的影响最大化。
To cooperatively transport a large load, it is important that carriers conform in their efforts and align their forces. A downside of behavioural conformism is that it may decrease the group's responsiveness to external information. Combining experiment and theory, we show how ants optimize collective transport. On the single-ant scale, optimization stems from decision rules that balance individuality and compliance. Macroscopically, these rules poise the system at the transition between random walk and ballistic motion where the collective response to the steering of a single informed ant is maximized. We relate this peak in response to the divergence of susceptibility at a phase transition. Our theoretical models predict that the ant-load system can be transitioned through the critical point of this mesoscopic system by varying its size; we present experiments supporting these predictions. Our findings show that efficient group-level processes can arise from transient amplification of individual-based knowledge. Group conformity is crucial for collective behaviours, but may decrease overall responsiveness to external cues. Here the authors show that load-carrying ant groups function at a transition between ballistic and random motions, where the influence of informed individuals is maximized.