Fig. 3. 18S in Sarcocystis sp. shed by the common boa snake (Boa constrictor) in Brazil

Fig. 3. 18S-based evolutionary analysis of Sarcocystis spp.: the tree was inferred by using the Maximum Likelihood method and Tamura 3-parameter model. A discrete Gamma distribution was used to model evolutionary rate differences among sites. The tree with the highest log likelihood is shown. The percentage of trees in which the associated taxa clustered together is shown next to the branches. This analysis involved 69 nucleotide sequences. All positions containing gaps and missing data were eliminated (complete deletion option). Branches marked with (•) contain sequences detected in snakes. The names between parenthesis represent the hosts in which each sequence at terminal node was found. There was a total of 624 positions in the final dataset. Evolutionary analyses were conducted in MEGA X.