Environmental evolutionary graph theory

JOURNAL OF THEORETICAL BIOLOGY

卷:360

Article

Maciejewski, Wes¹  Puleo, Gregory J.² 

[1] Univ British Columbia, Vancouver, BC V6T 1Z2, Canada

[2] Univ Illinois, Dept Math, Urbana, IL 61801 USA

关键词: Structured populations;    Two-species competition;    Evolution;    Moran process;   

DOI  :  10.1016/j.jtbi.2014.06.040

来源: Elsevier

【 摘 要 】

Understanding the influence of an environment on the evolution of its resident population is a major challenge in evolutionary biology. Great progress has been made in homogeneous population structures while heterogeneous structures have received relatively less attention. Here we present a structured population model where different individuals are best suited to different regions of their environment. The underlying structure is a graph: individuals occupy vertices, which are connected by edges. If an individual is suited for their vertex, they receive an increase in fecundity. This framework allows attention to be restricted to the spatial arrangement of suitable habitat. We prove some basic properties of this model and find some counter-intuitive results. Notably, (1) the arrangement of suitable sites is as important as their proportion, and (2) decreasing the proportion of suitable sites may result in a decrease in the fixation time of an allele. (C) 2014 Elsevier Ltd. All rights reserved.

【 授权许可】

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