Figure 5

COI mismatch distributions of Oncomelania h. robertsoni. COI-based mismatch distributions of specimens from the Deyang-Mianyang area belonging to subclades Ia and Ib (see Figure 2). The distributions of pairwise nucleotide differences (circles) were tested against the spatial expansion model (black line). The 95% confidence intervals of the coalescent simulations are indicated by dashed lines.