Fig. 1 in Molecular phylogeny of the Pseudaliidae (Nematoda) and the origin of associations between lungworms and marine mammals

Fig. 1. Maximum-Likelihood (ML) analysis of the phylogenetic relationships between representatives from all six genera of the Pseudaliidae in relation to the Filaroididae using the concatenated sequences of the cytochrome c oxidase subunit I (cox1) and second internal transcribed spacer (ITS2) DNA regions. Angiostrongylus vasorum (Angiostrongylidae), Metastrongylus salmi (Metastrongylidae), and Crenosoma striatum and Otostrongylus cicumlitus (Crenosomatidae) were used as the outgroups. Nodal support is indicated by bootstrap values; bootstrap values less than 70% are not shown. The scale bar indicates the number of nucleotide substitutions per site. Host key: green, Marine Pseudaliidae; red, Terrestrial Pseudaliidae; blue, Parafilaroides spp.; black, other species of the Metastrongyloidea.