Definitions for echinostoma
This page provides all possible meanings and translations of the word echinostoma
Echinostoma is an important genus that includes many parasites. Human echinostomiasis is an intestinal parasitic disease caused by one of at least sixteen trematode flukes from the genus Echinostoma. Found largely in southeast Asia and the Far East, mainly in cosmopolitan areas. It has extensive vitelline glands for egg yolk production and tandem, oval testes. Echinostomiasis is transmitted through the ingestion of one of several possible intermediate hosts, which could include snails or other mollusks, certain freshwater fish, crustaceans or amphibians. These flukes are of moderate size, about 2 mm, and are distinguished by an oral sucker surrounded by a characteristic collar of spines. Adults are in the small intestines of vertebrate definitive hosts. Eggs are released through the feces and embryonated. The egg becomes a miracidium with an operculum, which penetrates a snail, the first intermediate host. Upon penetration, it becomes a mother sporocyst, producing many mother rediae. Each of these mother redia produce many daughter rediae, which each produce many free-swimming cercariae. Each of these cercaria encysts in a freshwater mollusc, the second intermediate host, becoming a metacercaria. These mollusc are eaten by a vertebrate, the definitive host.
U.S. National Library of Medicine
A genus of intestinal flukes of the family Echinostomatidae which consists of many species. They occur in man and other vertebrates. The intermediate hosts are frequently mollusks.
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