Fig. 1From: Alternated selection mechanisms maintain adaptive diversity in different demographic scenarios of a large carnivoreMap showing location of samples corresponding to three demographic groups (persistent in green, expanding in blue and isolated in yellow). Pie charts represent the relative frequency distribution of seven three-locus MHC haplotypes per demographic group. Each color of the pie chart represents a three-locus MHC haplotype, and size is proportional to haplotype frequency within demographic group (Additional file 2: Table S2). Filled gray polygon represents the estimated wolf distribution in the Iberian Peninsula in 2005 [24]Back to article page