Fig. 4

Admixture bar plots representing the identity of individuals based on assignment using Bayesian modelling. Each individual is shown as a vertical line partitioned into K coloured segments whose length is proportional to the individual coefficients of membership in K = 2 to K = 7 genetic clusters that represent the populations assessed (top). The average membership of individuals of the K = 3 clusters (selected as the best estimate of the number of genetic clusters following implementation of the Evanno method [17]) for each sub-population are presented as pie charts, superimposed onto the location map to provide geographic perspective (bottom)