An eco-evolutionary approach of adaptation and recombination in a large population of varying size

STOCHASTIC PROCESSES AND THEIR APPLICATIONS

卷:125

Article

Smadi, Charline^1,2 

[1] Univ Paris Est, CERMICS ENPC, F-77455 Marne La Vallee, France

[2] Ecole Polytech, CNRS, CMAP UMR 7641, F-91128 Palaiseau, France

关键词: Birth and death process;    Coalescent;    Coupling;    Eco-evolution;    Genetic hitch-hiking;    Selective sweep;   

DOI  :  10.1016/j.spa.2014.12.007

来源: Elsevier

【 摘 要 】

We identify the genetic signature of a selective sweep in a population described by a birth-and-death process with density dependent competition. We study the limit behavior for large K, where K scales the population size. We focus on two loci: one under selection and one neutral. We distinguish a soft sweep occurring after an environmental change, from a hard sweep occurring after a mutation, and express the neutral proportion variation as a function of the ecological parameters, recombination probability r(K), and K. We show that for a hard sweep, two recombination regimes appear according to the order of r(K) log K. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

Free