![]() ![]() ![]() Liver fluke definition is given as, it is any member of the invertebrate class Trematoda (or phylum Platyhelminthes), which is a parasitic flatworm family that developed millions of years ago from free-living species. Members of the genus Paragonimus are potential biothreat agents.Fluke is also called trematode or blood fluke. sinensis (Chinese liver or Oriental fluke), Heterophyes heterophyes (Egyptian or small intestinal fluke), Fasciolopsis buski (large intestinal fluke), Dicrocoelium dendriticum (lancet fluke), Fasciola hepatica (liver or sheep liver fluke), and Paramphistomum (rumen fluke). Other important flukes are Paragonimus westermani (bronchial or lung fluke), Opisthorchis felineus (cat liver fluke), C. mansoni (Manson intestinal blood fluke), and S. Blood flukes live in the mesenteric-portal bloodstream and associated vesical and pelvic venous plexuses they include Schistosoma haematobium (the vesical blood fluke), S. All flukes of mammals (subclass Digenea) are internal parasites in the adult stage and are characterized by complex digenetic life cycles involving a snail initial host, in which larval multiplication occurs, and the release of swimming larvae (cercariae) that directly penetrate the skin of the final host (as in schistosomes), encyst on vegetation (as in Fasciola), or encyst in or on another intermediate host (as in Clonorchis and other fish-borne flukes). Other important flukes are Paragonimus westermani (bronchial or lung fluke), Opisthorchis felineus (cat liver fluke), Clonorchis sinensis (Chinese liver or Oriental fluke), Heterophyes heterophyes (Egyptian or small intestinal fluke), Fasciolopsis buski (large intestinal fluke), Dicrocoelium dendriticum (lancet fluke), Fasciola hepatica (liver or sheep liver fluke), and Paramphistomum (rumen fluke).Ĭommon name for members of the class Trematoda. Flukes of lower vertebrates (order Monogenea), especially fish, are frequently monogenetic ectoparasites or gill parasites. All flukes of mammals (subclass Digenea) are internal parasites in the adult stage and are characterized by complex digenetic life cycles involving a snail initial host, in which larval multiplication occurs, and the release of swimming larvae (cercariae), which directly penetrate the skin of the final host (as in schistosomes), encyst on vegetation (as in Fasciola), or encyst in or on another intermediate host (as in Clonorchis and other fish-borne flukes). Since snails are carriers of flukes, their destruction, usually by poison, is an effective preventive measure in areas where fluke infection is a problem.Ĭommon name for members of the class Trematoda (phylum Platyhelminthes). ![]() Proper cooking of fish provides protection against liver fluke infection. Treatment varies according to the type of fluke involved and requires careful medical supervision. Blood flukes such as Schistosoma penetrate the skin, make their way to the blood and travel to various parts of the body (see also schistosomiasis). Another liver fluke, Fasciola hepatica, is occasionally found in humans it causes obstruction of the bile ducts and enlargement of the liver. The Chinese liver fluke, Clonorchis sinensis, enters the body in raw or improperly cooked fish and may cause enlargement of the liver, jaundice, anemia, and weakness. Called also trematode.įlukes are not common in the United States but are a serious problem in many Asian, tropical, and subtropical countries. An organism of the class trematoda, characterized by a body that is usually flat and often leaflike flukes can infect the blood, liver, intestines, and lungs. ![]()
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