Spatial scales of desert locust gregarization
Spatial scales of desert locust gregarization
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DOI：
10.1073/pnas.95.22.13052
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发表时间：
1998-10-27
影响因子：
11.1
通讯作者：
Krakauer, DC
中科院分区：
文献类型：
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作者：
Collett, M;Despland, E;Krakauer, DC
迁徙蝗虫群体形成的核心是群体诱导的从“孤独”到“群居”表型的变化。这种变化可能发生在一只蝗虫的一生中，并在几代之间积累。它代表了表型可塑性的一个极端例子。我们提出了计算机模拟和实验室实验，表明资源分布的差异（仅在小空间尺度上显著）如何对种群水平上的相变产生重大影响；资源的局部空间集中导致了社会的社会化。模拟还表明，居住在局部集中资源的种群往往会随着种群密度的变化而快速同步地改变阶段。我们的研究结果表明，为什么在小空间尺度上的资源结构信息应该成为监测和控制策略的关键组成部分。
Central to swarm formation in migratory locusts is a crowding-induced change from a "solitarious" to a "gregarious" phenotype. This change can occur within the lifetime of a single locust and accrues across generations. It represents an extreme example of phenotypic plasticity. We present computer simulations and a laboratory experiment that show how differences in resource distributions, conspicuous only at small spatial scales, can have significant effects on phase change at the population level; local spatial concentration of resource induces gregarization. Simulations also show that populations inhabiting a locally concentrated resource tend to change phase rapidly and synchronously in response to altered population densities. Our results show why information about the structure of resource at small spatial scales should become key components in monitoring and control strategies.