Descriptive of organisms of the subclass Digenea of the class Trematoda within the flatworm phylum Platyhelminthes. The term means “two beginnings,” referring to a life cycle with alternation of generations, one parasitic and the other free-living. Digenea is the largest group of trematodes and the most important medically and economically. All members are endoparasitic with two or more hosts in the life cycle, the first host usually being a mollusc. The digenetic flukes include blood flukes and schistosomes that are generally considered to be the most serious helminthic human parasite. See Classification; schistosomiasis.
Subjects: Genetics and Genomics.