FIG. 2.

ML tree of the ITS2 region of environmental isolates of the peritrich ciliate Carchesium polypinum computed with PHYML, based on the Jukes-Cantor model, determined by Modeltest. The first and second values at the nodes represent bootstrap values for NJ and ML analyses, respectively, while the third value represents the posterior probability of the BI analysis. The scale bar represents 5 changes per 100 positions. The sequences of Meseres corlissi and Tetrahymena mimbres were used to root the tree. Only bootstrap values above 40 are shown.