Fig. 1

Phylogenetic trees for orthologues to EMLSAP00000006733 (MGST1L) (a) and EMLSAP00000012943 (PGES3L) (b). Branch labels indicate branch support in percentage, scale bars correspond to 0.3 (a) and 0.2 (b) substitutions per site. Sequence annotations are given as found. Both phylograms were rooted using mammalian (a) and vertebrate (b) sequences as outgroups. Both salmon lice sequences are well embedded within taxa with the same annotation, except for Caligus rogercresseyi PGE₂ synthase (PGES). Major clades (Hymenoptera, Diptera, Nematoda and Crustacea) are indicated by vertical bars