Reynolds Andy M, Leprêtre Lisa, Bohan David A
Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK.
Sci Rep. 2013 Nov 7;3:3158. doi: 10.1038/srep03158.
Correlated random walks are the dominant conceptual framework for modelling and interpreting organism movement patterns. Recent years have witnessed a stream of high profile publications reporting that many organisms perform Lévy walks; movement patterns that seemingly stand apart from the correlated random walk paradigm because they are discrete and scale-free rather than continuous and scale-finite. Our new study of the movement patterns of Tenebrio molitor beetles in unchanging, featureless arenas provides the first empirical support for a remarkable and deep theoretical synthesis that unites correlated random walks and Lévy walks. It demonstrates that the two models are complementary rather than competing descriptions of movement pattern data and shows that correlated random walks are a part of the Lévy walk family. It follows from this that vast numbers of Lévy walkers could be hiding in plain sight.
相关随机游走是用于建模和解释生物体运动模式的主要概念框架。近年来，大量备受瞩目的出版物报道称，许多生物体进行 Lévy 行走；这种运动模式似乎与相关随机游走范式不同，因为它们是离散且无标度的，而非连续且标度有限的。我们对黄粉虫在不变的、无特征的场地中的运动模式进行的新研究，为一个卓越且深刻的理论综合提供了首个实证支持，该理论综合将相关随机游走和 Lévy 行走统一起来。它表明这两种模型是对运动模式数据的互补而非相互竞争的描述，并表明相关随机游走是 Lévy 行走家族的一部分。由此可知，大量的 Lévy 行走者可能就隐藏在显而易见之处。
