Maximum likelihood tree based on the
L gene using Tamura-Nei with gamma distribution as the substitution model and
as an outgroup. Bootstrap values above 80 are reported.
Scale bar: number of base substitutions per site. Sample key: first letter indicates host (H – human, P- pig); last two letters indicate country of origin (UG – Uganda, EC – Ecuador, DK – Denmark, US – USA); numerals indicate unique worm ID. A neighbour joining tree showed a very similar topography.