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F ‐statistics of clonal diploids structured in numerous demes
Author(s) -
DE MEEÛS THIERRY,
BALLOUX FRANÇOIS
Publication year - 2005
Publication title -
molecular ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.619
H-Index - 225
eISSN - 1365-294X
pISSN - 0962-1083
DOI - 10.1111/j.1365-294x.2005.02643.x
Subject(s) - biology , population , evolutionary biology , ploidy , approximate bayesian computation , statistics , sexual reproduction , panmixia , genetic diversity , reproduction , genetics , genetic structure , genetic variation , demography , mathematics , gene , sociology
The expected apportionment of genetic diversity in diploid clonal organisms structured in numerous subpopulations is explored. Under the specific assumptions considered, corresponding, for instance, to clonal pathogens infecting a large number of hosts, the co‐ancestry between individuals within subpopulations is the only nontrivial quantity. Thus the population structure can be fully described either by F ST or F IS , as F ST = – F IS /(1 − F IS ). We show that, for most of the parameter space considered, including simulations where equilibrium is not reached and/or where homoplasy is high, the number of effective migrants is most accurately estimated as Nm = –(1 + F IS )/4 F IS . We further propose a criterion to test for the absence of cryptic sexual reproduction based on the F ‐statistics F IS and F ST , which is applied to three previously published empirical data sets.