C. Dactylogyrus Lives on the gills of fish. Dispersal stage is a ciliated larva called an oncomiricidium that loses its cilia once on the fish. Spines are found in various areas of the body within the tegument. Tegument is shed in some, thus removing host antibodies that may have formed in response to the digenean surface antigens. The gut has two branches.
Adults are hermaphroditic.
Digeneans maximize reproductive potential, in large part, by reproducing asexually more than once before maturation and sexual reproduction. Sporocyst stage is in molluscs. A saclike form with no gut, some microvilli in the tegument for nutrient absorption. Reproduces asexually to produce daughter sporocysts and redia in most. Leucochloridium is a species that migrates up into the tentacles of the snail host.