Plagiorchiida | |
---|---|
Paragonimus westermani (Troglotremata: Paragonimidae) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Platyhelminthes |
Class: | Trematoda |
Subclass: | Digenea |
Order: | Plagiorchiida |
Plagiorchiida is a large order of trematodes, synonymous to Echinostomida. They belong to the Digenea, a large subclass of flukes. This order contains relatively few significant parasites of humans. [1]
The following families are placed here, organised by superfamily and suborder: [2] [3]
Digenea is a class of trematodes in the Platyhelminthes phylum, consisting of parasitic flatworms with a syncytial tegument and, usually, two suckers, one ventral and one oral. Adults commonly live within the digestive tract, but occur throughout the organ systems of all classes of vertebrates. Once thought to be related to the Monogenea, it is now recognised that they are closest to the Aspidogastrea and that the Monogenea are more closely allied with the Cestoda. Around 6,000 species have been described to date.
The thorny-headed worm family Polymorphidae contains endoparasites which as adults feed mainly in fish and aquatic birds. When this taxon was erected by Meyer in 1931, a subfamily Polymorphinae was established in it. As the Polymorphidae as presently understood would then be monotypic, with no basal genera outside the Polymorphinae, the proposed subfamily is redundant for the time being and therefore most modern treatments simply omit it. Polymorphus minutus is an economically significant parasite in goose and duck farming.
Echinostomata is a suborder of the parasitic flatworm order Plagiorchiida. The suborder contains numerous species that are parasitic in humans.
Psilostomatidae is a family of trematodes in the order Plagiorchiida. They parasitise aquatic vertebrates as definitive hosts.
Opisthorchiidae is a family of digenean trematodes. Opisthorchiidae have cosmopolitan distribution.
Heterophyidae is a family of intestinal trematodes in the order Plagiorchiida.
Haploporidae is a family of trematodes in the order Plagiorchiida.
Opecoelidae is a family of trematodes. It is the largest digenean family with over 90 genera and nearly 900 species, almost solely found in marine and freshwater teleost fishes. It was considered by Bray et al. to belong in the superfamily Opecoeloidea Ozaki, 1925 or the Brachycladioidea Odhner, 1905.
Philophthalmidae is a family of trematodes in the order Plagiorchiida.
Echinostomatidae is a family of trematodes in the order Plagiorchiida, first described in 1899.
Lepocreadiidae is a family of trematodes in the order Plagiorchiida.
Xiphidiata is a suborder of Plagiorchiida, an order of parasitic flatworms (flukes).
Azygia is a genus of flatworms belonging to the family Azygiidae.
Azygiida is an order of flatworms belonging to the class Rhabditophora.
Brachycladiidae is a family of trematodes belonging to the order Plagiorchiida.
Cryptogonimidae is a family of trematodes belonging to the order Plagiorchiida.
Derogenidae is a family of trematodes belonging to the order Plagiorchiida.
Hemiuridae is a family of trematodes belonging to the order Plagiorchiida containing 514 described species.
Prosthogonimus is a genus of trematodes belonging to the family Prosthogonimidae.
Echinostomatinae is a subfamily of trematodes in the order Plagiorchiida, first described in 1899.