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

作者：Smadi Charline^*

来源：Stochastic Processes and Their Applications, 2015, 125(5): 2054-2095.

DOI：10.1016/j.spa.2014.12.007

• Birth and death process
• Coalescent
• Coupling
• Eco-evolution
• Genetic hitch-hiking
• Selective sweep

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.

• 出版日期2015-5