Figure 1. Maximum likelihood (ML) estimate of Diphyllobothrium dendriticum phylogenetic relationships based on currently available cox1 sequences of human-infecting Diphyllobothrium species and their close relatives computed in Garli 2.0.

Nucleotide data matrix was 1563; codon positions were analyzed separately according to the partition scheme and models (TrN+I) (F81) (TrN+I+G) chosen according to the BIC in PartitionFinder 1.0.1. Nodal support values depict bootstrap support proportions >50 based on 1,000 repetitions estimated in Garli. Note that the D. pacificum branch was shortened by a factor of two. Newly obtained sequences are shown in bold type; country of origin is listed for D. dendriticum infections.