Great Basin Naturalist


Diplostomum spathaceum (Trematoda: Diplostomatidae) causes a disease known as diplostomatosis (eye fluke disease) and has been found to be widespread throughout the fish of Utah. Totals of 756 snails (5 species), 893 fish (21 species) and 6 species of birds were examined for the presence of larval and adult D. spathaceum from 17 collecting sites throughout Utah. Pathologic effects such as blindness, subacute inflammatory reactions, cornea perforation, and ruptured globe due to diplostomatosis upon the fish host are listed. Fish host and parasite infection data of D. spathaceum for the major lakes of Utah are given.