mgu FY2017 Annual Report 3.2 fig2.2

Fig. 2.2. Maximum likelihood analyses suggest that the Dicyemida have a close affinity to the Orthonectida, and are nested within the Gastrotricha. a, The maximum likelihood (ML) tree inferred from a dataset covering 29 taxa, with 348 orthologs, 58,124 amino acids, and 6% missing data. This tree topology is consistent with ML trees from analyses of two sub-datasets filtered to remove systematic biases. Analyses were executed under the GAMMA model of rate heterogeneity with 100 bootstrap replicates using RAxML. The Dicyemida displays close affinity to the Orthonectida, and both are nested within the Gastrotricha. Bootstrap values for three datasets (left to right): Datasets 1–3, respectively. Red triangles indicate different groupings from Bayesian analyses. b, ML tree, inferred from Dataset 3 covering 26 taxa for the taxon-exclusion experiment, indicates that the nesting of D. japonicum within the Gastrotricha probably does not reflect long-branch attraction artifacts. Filled green circles indicate >95% bootstrap support for all datasets