Fig. 3: Population differentiation at the MHC-II.

Discriminant functions (DF1 and DF2) were calculated with the discriminant analysis of principal components (DAPC) for the MHC-II (amino acid variants) across seven black-headed gull populations (each population marked with a different colour). The reassignment of individuals into their prior groups (populations) is shown below the DAPC scatterplot. Each bar represents proportional posterior membership probability of each individual into each population.