Fig. 1. Phylogram constructed for 31 strains of the P. aurelia species complex (including the 5 studied strains of P. tredecaurelia) and two strains of P. multimicronucleatum used as an outgroup. The trees were constructed on the basis of a comparison of sequences from the ITS1- 5.8S-ITS2-5'LSU rDNA fragment (A), COI (B), and CytB (C) using the Bayesian inference method. Bootstrap values for neighbor joining, maximum parsimony analysis, maximum likelihood, and posterior probabilities for Bayesian inference are shown. Bootstrap values smaller than 50% (posterior probabilities <0.50) are not shown. Dashes represent no bootstrap or posterior value at a given node. All positions containing gaps and missing data were eliminated. Phylogenetic analyses were conducted using MEGA 5.0 (NJ/MP/ML) and MrBayes 3.1.2 (BI).