Fig. 1

Phylogeny of 103 gyrodactylids inferred using 18S rRNA and ITS genes and the Maximum Likelihood methodology implemented in IQ-TREE. The clade comprising six Gyrodactylus species (G. laevis, pecotti, magnificus, phoxini, elegans, and prostae) was used as the outgroup. The figure shows (from inside to outside): the tree of gyrodactylids with bootstrap values, phylogenetic host specificity, phylobeta host specificity, geographic host specificity, and basic host specificity bar