Phylogenetic tree of five cestode orders inferred from maximum likelihood analysis with concatenated nucleotide sequence of all 36 genes (12 PCGs, 2 rRNAs, and 22 tRNAs). Bootstrap (BS)/bayesian posterior probability (BPP) support values are shown above the nodes, only BS < 100 and BPP < 1 are displayed. Scale bar represents the estimated number of substitutions per site.