Fig. 3: Heterozygosity-excess (ΔH) at 15-microsatellite loci in four breeding regions of ivory gull, obtained with Bottleneck software for two mutational models.

A TPM70 and (B) TPM95). The average ΔH overall loci is represented by a black dot, and locus-specific values are represented by smaller gray dots. The dashed line represents equality between observed and expected heterozygosity, i.e., ∆H = HE− HEq = 0. Symbols (*) and (NS) indicate that the one tail probability of HE > HEq, i.e., heterozygosity-excess, is significant (p value < 0.05) or not significant, using Wilcoxon’s test. The p values obtained after correction for multiple tests are provided in Table S4.