Interplay between morphology and competition in two-dimensional colony expansion
Interplay between morphology and competition in two-dimensional colony expansion
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二维菌落扩张中形态与竞争之间的相互作用
DOI：
10.1103/physreve.108.l032301
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发表时间：
2023
影响因子：
2.4
通讯作者：
Korolev, Kirill S.
中科院分区：
文献类型：
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作者：
Swartz, Daniel W.;Lee, Hyunseok;Kardar, Mehran;Korolev, Kirill S.
在不断增长的种群中，突变的命运取决于它们与祖先的竞争能力以及它们开拓新领土的能力。在这里，我们提出了一个理论，集成了两个方面的突变体的健身耦合的经典描述的一维竞争（Fisher方程）的最小模型的前形状（Kardar-Parisi-Zhang方程）。我们解决这些方程，并找到三个政权，这是由膨胀率，仅由竞争能力，或两者兼而有之。总的来说，我们的研究结果提供了一个简单的框架来研究空间竞争。
In growing populations, the fate of mutations depends on their competitive ability against the ancestor and their ability to colonize new territory. Here we present a theory that integrates both aspects of mutant fitness by coupling the classic description of one-dimensional competition (Fisher equation) to the minimal model of front shape (Kardar-Parisi-Zhang equation). We solve these equations and find three regimes, which are controlled solely by the expansion rates, solely by the competitive abilities, or by both. Collectively, our results provide a simple framework to study spatial competition.