title: FST in a hierarchical island model.
abstract: It is shown that in a hierarchical island model, in which demes within a neighborhood exchange migrants at a much higher rate than do demes in different neighborhoods, hierarchical F statistics introduced by S. Wright can indicate the extent of gene flow within and between neighborhoods. At equilibrium, the within-neighborhood inbreeding coefficient, FSN, is approximately 1/(1 + 4Nm1) where N is the deme size and m1 is the migration rate among demes in the same neighborhood. The between-neighborhood inbreeding coefficient, FNT, is approximately 1/(1 + 4Ndm2) where d is the number of demes in a neighborhood and m2 is the migration rate among demes in different neighborhoods.
authors.affiliation: Department of Integrative Biology, University of California, Berkeley 94720.
authors.forename: M
authors.initials: M
authors.lastname: Slatkin
authors.forename: L
authors.initials: L
authors.lastname: Voelm
mesh_terms: D000818:Animals; D004641:Emigration and Immigration; D005787:Gene Frequency; D014644:Genetic Variation / Q000235:genetics; D005828:Genetics, Population; D007178:Inbreeding; D008433:Mathematics; D008957:Models, Genetic; D012377:Rodentia