Nonstationary patterns of isolation-by-distance: inferring measures of local genetic differentiation with Bayesian kriging.

ABSTRACT: Patterns of isolation-by-distance (IBD) arise when population differentiation increases with increasing geographic distances. Patterns of IBD are usually caused by local spatial dispersal, which explains why differences of allele frequencies between populations accumulate with distance. However, spatial variations of demographic parameters such as migration rate or population density can generate nonstationary patterns of IBD where the rate at which genetic differentiation accumulates varies across space. To characterize nonstationary patterns of IBD, we infer local genetic differentiation based on Bayesian kriging. Local genetic differentiation for a sampled population is defined as the average genetic differentiation between the sampled population and fictive neighboring populations. To

SUBMITTER: Duforet-Frebourg N 

PROVIDER: S-EPMC4285919 | biostudies-literature | 2014 Apr

REPOSITORIES: biostudies-literature