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Article Dans Une Revue Evolution - International Journal of Organic Evolution Année : 2004

Estimating sex-specific dispersal rates with autosomal markers in hierarchically structured populations

Eric Petit
Nicolas Perrin

Résumé

A recent study suggests that sex-specific dispersal rates can be quantitatively estimated on the basis of sex- and state-specific (pre- vs. postdispersal) F-statistics. In the present paper, we extend this approach to account for the hierarchical structure of natural populations, and we validate it through individual-based simulations. The model is applied to an empirical data set consisting of 536 individuals (males, females, and predispersal juveniles) of greater white-toothed shrews (Crocidura russula), sampled according to a hierarchical design and typed for seven autosomal microsatellite loci. From this dataset, dispersal is significantly female biased at the local scale (breeding-group level), but not at the larger scale (among local populations). We argue that selective pressures on dispersal are likely to depend on the spatial scale considered, and that short-distance dispersal should mainly respond to kin interactions (inbreeding or kin competition avoidance), which exert differential pressure on males and females.

Dates et versions

hal-01346119 , version 1 (18-07-2016)

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Pierre Fontanillas, Eric Petit, Nicolas Perrin. Estimating sex-specific dispersal rates with autosomal markers in hierarchically structured populations. Evolution - International Journal of Organic Evolution, 2004, 58 (4), pp.886-894. ⟨10.1111/j.0014-3820.2004.tb00420.x⟩. ⟨hal-01346119⟩
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