Fig. 1

Principal coordinates analyses (the first two factors), based on co-dominant alleles at ten microsatellite loci, displaying genetic similarities among individuals of Schistosoma japonicum sampled from two locations and both genders at two time points (2003 and 2011) with all 138 unique MLGs (a), and retaining only a single representative of each near-identical MLG cluster (82 MLGs) (b). The abbreviated name of each subpopulation is described in Table 1