Brouat Carine auteur aut IRD Loiseau A. auteur aut IRD Kane Mamadou auteur aut IRD Bâ Khalilou auteur aut IRD Duplantier Jean-Marc auteur aut IRD text journalArticle eng text/pdf born digital access Using the same set of microsatellite markers, we compared the population genetic structure of two Mastomys species, one being exclusively commensal in southeastern Senegal, and the other being continuously distributed outside villages in this region. Both species were sampled in the same landscape context and at the same spatial scale. According to the expectations based on the degree of habitat patchiness (which is higher for commensal populations in this rural area), genetic diversity was lower and genetic differentiation was higher in commensal populations of Mastomys natalensis than in wild populations of Mastomys erythroleucus. Contrasting estimates of effective dispersal and current migration rates corroborates previous data on differences in social structure between the two species. Isolation-by-distance analyses showed that human-mediated dispersal is not a major factor explaining the pattern of genetic differentiation for M. natalensis, and that gene flow is high and random between M. erythroleucus populations at the spatial scale considered. specialized commensal habitat genetic structure habitat patchiness Mastomys microsatellite rodent 080 16 14 2985-2997 2007 0962-1083 https://www.documentation.ird.fr/hor/fdi:010040690 10.1111/j.1365-294X.2007.03353.x 0962-1083 [F B010040690] https://www.documentation.ird.fr/hor/fdi:010040690 https://www.documentation.ird.fr/intranet/publi/2007/09/010040690.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2007-10-11 2017-08-23 fdi:010040690 fre