On the role played by the carrying capacity and the ancestral population size during a range expansion.

ABSTRACT: Most species are structured and various population genetics models have been proposed to investigate their history. For mathematical tractability, most of these models make the simplifying assumption of equilibrium. Here we focus on the properties of a nonequilibrium spatial explicit model, range expansions (REs). Despite their abundance, many details of their genetic consequences need yet to be fully investigated. The model we studied is characterized by four main parameters: the effective population size of each deme (N), the migration rate per generation per deme (m), the time of the expansion (T_exp) and the effective size of the deme from which the expansion started (N_anc). By means of extensive coalescent simulations, we focused on two aspects of range expansions

SUBMITTER: Mona S 

PROVIDER: S-EPMC5234478 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature