斑马鱼集体行为的主导长度尺度
Dominating Lengthscales of Zebrafish Collective Behaviour
AI总结：
该研究通过三维实验观测50条斑马鱼的集体行为转变，识别出持续长度和最近邻距离两个主导长度尺度，其比值与集体运动极化度稳健相关，并用自驱动粒子简化模型予以解释。
摘要：
生命系统中的集体行为在多个尺度上均有观测，从细菌、昆虫到鱼群皆是如此。斑马鱼已成为适合实验室研究的模式系统。本文报道了针对50条斑马鱼集体动力学的三维研究。我们观察到，在适应新环境条件的过程中，集体行为会在有序态和随机态之间转变。我们量化了斑马鱼的空间和时间关联函数，并确定了两个长度尺度——持续长度和最近邻距离，它们抓住了行为变化的本质。这两个长度尺度的比值与集体运动的极化度呈现稳健的相关性，我们通过一个具有对齐相互作用的自驱动粒子简化模型对该现象进行了解释。
英文摘要：
Collective behaviour in living systems is observed across many scales, from bacteria to insects, to fish shoals. Zebrafish have emerged as a model system amenable to laboratory study. Here we report a three-dimensional study of the collective dynamics of fifty zebrafish. We observed the emergence of collective behaviour changing between \yy{ordered} to randomised, upon \yy{adaptation} to new environmental conditions. We quantify the spatial and temporal correlation functions of the fish and identify two length scales, the persistence length and the nearest neighbour distance, that capture the essence of the behavioural changes. The ratio of the two length scales correlates robustly with the polarisation of collective motion that we explain with a reductionist model of self--propelled particles with alignment interactions.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
