Principal coordinates analysis. Plots of the values of the first, second, and third principal coordinates among all (a) samples and (b) individuals. Solid circles: feral populations; open circles: farm populations.
Multivariate ordination by multidimensional scaling (MDS). Plot of first and second ordinates considering only pooled color types from farm samples.
Admixture analysis using STRUCTURE, in which individuals were assigned according to the most likely K (i.e., K = 11). Each vertical line represents 1 individual. Populations are numbered as in Table 1.