Estimation bayésienne de fréquences alléliques dans un modèle de métapopulation

Abstract

This work aims at studying the meta-population genetic structure along with the dispersal ability of individuals among local populations by estimating the heterogeneity of allelic frequencies based on ”multinomial-Dirichlet” distributions, and implemented on the JAGS software (R package rjags). The number of copies of the different alleles are sampled in a multinomial distribution with parameters depending on population allelic frequencies. The population allelic frequencies are sampled in a Dirichlet distribution with parameter equal to the product of the metapopulation allelic frequencies and a F–parameter measuring differentiation (F-model, Gaggiotti and Foll 2010). This model was applied to an insect pest (Cydia pomonella), collected in several orchards in South of France at landscape scale