Fig. 6.

Phylogeny of Trichocephalida based on complete mitochondrial sequences. The order Trichocephalida is represented by three robust highly resolved clades representing three families: Trichuridae (blue); Capillariidae (red); and Trichinellidae (green). The evolutionary history was inferred by using Bayesian inference (BI) and maximum likelihood (ML). The amino acid sequence alignment of 2,991 amino acid residues includes concatenated 12 coding genes from available complete mtDNA genomes (2 newly obtained Eucoleus taxa, 11 Trichuris taxa, 8 Trichinella taxa and 12 outgroup taxa). The Bayesian tree was reconstructed using MrBayes 3.2.7 with parameter set to the rate matrix for amino acid data with averaging model with invariable (+I) sites and a gamma distribution (+G). Maximum likelihood trees were reconstructed using the maximum likelihood and general reversible mitochondrial (GTR) ​+ ​Freq. model using selection model function in MEGA X v.10.1.8. The tree is drawn to scale. Posterior probabilities from BI/bootstrap support for ML are shown above branches. Note that AP017703 is annotated as Trichuris muris (∗), but likely represents misidentified Trichuris suis