Differential introgression among loci across a hybrid zone of the intermediate horseshoe bat (Rhinolophus affinis)

摘要: Hybrid zones formed by the secondary contact of divergent lineages represent natural laboratories for studying genetic basis speciation. Here we tested patterns differential introgression among three X-linked and 11 autosomal regions to identify candidate loci related either reproductive isolation or adaptive across a hybrid zone between two Chinese mainland subspecies intermediate horseshoe bat Rhinolophus affinis: R. a. himalayanus macrurus. Our results support previous suggestion that macrurus when third (R. hainanus) recolonized from Hainan Island, is ancestral taxon. However, this overall evolutionary history was not reflected in all examined, with considerable locus-wise heterogeneity seen gene tree topologies, levels polymorphism, differentiation rates introgression. Coalescent simulations suggested lineage mixing at some nuclear might result incomplete sorting. Isolation migration models supported evidence flow one intronic marker hearing Prestin. We suggest phylogenetic discordance respect species here likely arise via combination sorting low incidence although cannot rule out other explanations such as selection recombination. Two locus were identified zone. work highlights importance including multiple genomic characterizing divergence