Figure 5.

Schistosoma Bayesian timetree based on molecular clock analyses. Molecular clock created in BEAST showing the mean time of most recent common ancestor (MRCA) for all available schistosome species (blue) and the posterior probabilities (red). The white bars at each node show the highest 95% posterior density (HPD) interval for the main nodes an indicator of the estimated range of time of divergence. Molecular clock predicts divergence of the S. indicum group at 9.35 MYA. This molecular clock predicts the S. indicum group to be paraphyletic with S. nasale as the most derived of the group and separate from the other species. The MRCA between the two populations of S. spindale is predicted to be approximately 2.51 MYA.