Figure 3

Results of the STRUCTURE Bayesian clustering analysis on freshwater pearl mussel populations: (A) with the most likely number of clusters (K = 2); (B) with the second most likely number of clusters (K = 3); (C,D) additional clustering analyses within each of the major clades identified in (A), both with the most likely number of clusters (K = 2). Each individual is represented by a vertical bar in K colored segments with the length of each bar being proportional to the estimated membership coefficient. Black lines separate individuals from different populations.