Diandrya vancouverensis

Barrera, McIntyre A., Janes, Jasmine K. & Gorrell, Jamieson C., 2022, Molecular phylogenetics and systematics of two enteric helminth parasites (Baylisascaris laevis and Diandrya vancouverensis) in the Vancouver Island marmot (Marmota vancouverensis), International Journal for Parasitology: Parasites and Wildlife 19, pp. 301-310 : 307

4.2. Systematics of Diandrya vancouverensis

Our combined and cox 1 trees separated D. vancouverensis and D. composita with high support ( Fig. 5 and Fig. S16). Wickstrom¨et al. (2005) placed D. composita in a clade with Paranoplocephala spp. and Vilas et al. (2005) reported pairwise sequence divergences of 0.1–5.9% and 5.2–18.4% at ITS1 and cox 1, respectively, among species pairs from Paranoplocephala . These values are comparable to the divergences between D. vancouverensis and D. composita for these genes (7.69 and 10.44%, respectively). Hence, this analysis supports the species classification of D. vancouverensis originally proposed based on its unique morphology ( Mace and Shepard, 1981).

Figures

Fig. 5. Bayesian consensus tree from Diandrya, related genera, and outgroup alignments of cox1, ITS1, and concatenated sequences from GenBank and this study (D. vancouverensis). Branch labels represent Bayesian posterior probabilities. Branch lengths are scaled to expected number of substitutions per site. See also Table 2.