Fig. 6: Estimation of the number of clusters (K) using the program STRUCTURE for both species.

Using K = 2 assuming that there are two species contributing to the gene pool (a), and K = 3, the most likely number for K. Collection location codes as in Table 1 except for LSC which is Lake St. Clair and it is composed of SCBB and SCBM and LR which is Lampsilis radiata composed of VAMR, VAOR and SCSR.