Range expansion of heterogeneous populations.
Range expansion of heterogeneous populations.
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DOI：
10.1103/physrevlett.112.148103
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发表时间：
2014-03
影响因子：
8.6
通讯作者：
M. Reiter;S. Rulands;Erwin Frey
中科院分区：
文献类型：
--
作者：
M. Reiter;S. Rulands;Erwin Frey
在细菌群体中传播风险通常被认为是最大化生存的策略。在这里，我们研究它的作用范围扩大的遗传多样性的人口增长和运动是两个可供选择的性状。我们发现，在初始扩增阶段，快速生长的细胞确实具有选择性优势。相比之下，渐进地，通才平衡运动和繁殖是进化上最成功的。这些发现是合理的一组耦合Fisher方程补充随机模拟。
Risk spreading in bacterial populations is generally regarded as a strategy to maximize survival. Here, we study its role during range expansion of a genetically diverse population where growth and motility are two alternative traits. We find that during the initial expansion phase fast-growing cells do have a selective advantage. By contrast, asymptotically, generalists balancing motility and reproduction are evolutionarily most successful. These findings are rationalized by a set of coupled Fisher equations complemented by stochastic simulations.