Heterophyes heterophyes, Metagonimus yokogawai, Haplorchis taichui, Haplorchis pumilio and Stellantchasmus falcatus are a few of the many heterophyids. Heterophyes heterophyes (von Siebold, ) Stiles and Hassal, (Figure 2 ). ETYMOLOGY:Hetero = different and phyes = form. Heterophyes heterophyes. Introduction: Heterophyes heterophyes is a small parasitic fluke that infects humans who eat raw or undercooked fish infected with .

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hdterophyes January 3, Content source: Linking to a non-federal site does not constitute an endorsement by HHS, CDC or any of its employees of the sponsors or the information and products presented on the site. In addition to humans, various fish-eating mammals e. The sinus leads to the genital pore which is lined with toothed spines. At the posterior end of the fluke are two oval testes.

After ingestion, the metacercariae excyst, attach to the mucosa of the small intestine and mature into adults measuring 1. heterophyse

Migration hwterophyes the eggs to the heart, resulting in potentially fatal myocardial and valvular damage, has been reported from the Philippines. None known; however, due to the requirements for two intermediate hosts, it is unlikely that an infected cat would pose a direct threat to other animals.

The adult flukes live burrowed between the villi of the host’s small intestine. However, no clinical signs were described.

January 3, Page last updated: Mugil cephalusHeteropyhes niloticaAphanius fasciatusand Acanthogobius sp. On the histopathology of the small intestine in animals experimentally infected with H.



Many cercariae are produced from each redia. The first report in cats is that of Looss For an overview including prevention and control visit www. The spines on the genital sucker of Heterophyes heterophyes number 50 to 80 and are digitate, looking like small leafless trees.

The second intermediate host include freshwater fish: The miracidia undergo several developmental stages in the snail, i. Heterophyes aegyptiaca Cobbold DPDx is an education resource designed for health professionals and laboratory scientists. InKhalil found 53 of 60 school children infected in an area close to the Suez Canal; init was found in 14 of 65 cats in Egypt Abo-Shady et al.

Experiments on habitat selection of Heterophyes species in different definitive hosts. Eine Revision der Fasciolidengattung Heterophyes Cobb. Probably praziquantel, but not reported.

CDC – DPDx – Heterophyiasis

Heterophyes heterophyes recovered from the from the intestine of a cat in Egypt. Heterophyidae collected heyerophyes a man. The vas deferens leading from the testes expands to form a seminal vesicle and then narrows again to form an ejaculatory duct.

The life cycle in Egypt involves the snail Pironella conica and the brackish-water fish host Mugil cephalus.

Cats become infected by eating raw fish as do other piscivorous animals. In the orient, Heterophyes nocens Onji and Nishio, was described, but it is now considered a subspecies of Heterophyes heterophyes.

Each worm causes a mild inflammatory reaction at its site of contact with the intestine. The definitive host becomes infected by ingesting undercooked or salted fish heterophyed metacercariae. Hamdy EI, Nicola E. Located medioposterior is the fluke’s one ovary and leading away from the ovary is the vitellaria. Heterpphyes uterus is a long tube like structure that also leads away from the ovary and joins up with the ejaculatory duct to form the genital duct which leads to a genital sinus.


Journal of the Egyptian Society of Parasitology, 37 3 Middle and upper portion, jejunum and duodenum of the small intestine Tarachewski, Snail intermediate hosts of Heterophyes heterophyes.

In Egypt, after looking at twelve populations of Cerithideopsilla conicawhich is mud snail hegerophyes carrier of Heterophyes heterophyesit was found that the most infected snails were found in the Nile Delta compared to the Red sea coast and inland waters of the Delta. In this figure, it is difficult to appreciate the genital sucker except as a darkened area to the right and slightly posteriad to the ventral sucker.

Please add a reason or hterophyes talk parameter to this template to explain the issue with the article. Here, the cercariae encyst in the muscle tissue. Cerithideopsilla cingulata is the main first intermediate host for H.

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On their way down, they contact heherophyes fish and penetrate into the epithelium of the fish. The reflection of control programs of parasitic diseases upon gastrointestinal helminthiasis in Dakahlia Governorate, Egypt. Antigen and immune complex deposits left by H.

It is common practice for people to defecate on the lake shores and river banks or from their boats while fishing. Minute teardrop-shaped flukes found in the small intestines of fish-eating birds and mammals.

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