Delayed adaptation in stochastic metapopulation models(a)

被引:5
|
作者
Bauer, Marianne [1 ]
Frey, Erwin
机构
[1] Ludwig Maximilian Univ Munchen, Arnold Sommerfeld Ctr Theoret Phys, Theresienstr 37, D-80333 Munich, Germany
基金
欧盟地平线“2020”;
关键词
PUBLIC-GOODS; VISCOUS POPULATIONS; EVOLUTIONARY GAME; PRISONERS-DILEMMA; COOPERATION; DYNAMICS; GROWTH; HETEROGENEITY; BIODIVERSITY; MAINTENANCE;
D O I
10.1209/0295-5075/122/68002
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
How does delayed fitnesses adaptation after local habitat changes affect survival of species metapopulation? We study this question in a two-species model system, where the species composition of a local patch determines the reference fitness of all its individuals. When individuals move, this local species composition changes. As the local environment on the patch might, adapt, slowly to this change, we assume that individuals in turn adapt their fitness with a stochastic delay. We show that the combination of delay and spatial substructure can yield significantly different phase diagrams for the survival of these species with respect to models with immediate response. We investigate this exemplarily for the case where the two species interact via an exoproduct: thus, our population consists of a slow-growing producer species and a fast-growing dominant species. We provide a conceptual understanding of the role of delay by presenting analytic result,s in tlie well-mixed and low-mobility limit,. By studying intermediate mobilities numerically, we ensure that our results are robust,, and may be relevant to different ecological situations as well as microbial metapopulation experiments. Copyright (C) EPLA, 2018
引用
收藏
页数:7
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