What is the common name of Metagonimus Yokogawai?

Metagonimus yokogawai, adult fluke.

What is Metagonimiasis?

Metagonimiasis is an infectious parasitic disease that is associated with eating undercooked fish. It is found mostly in the Far East, but also in Siberia, Manchuria, the Balkan states, Israel and Spain.

What stage of the trematodes swims in the water?

The hatchling is called a miracidium, a free-swimming, ciliated larva. Miracidia will then grow and develop within the intermediate host into a sac-like structure known as a sporocyst or into rediae, either of which may give rise to free-swimming, motile cercariae larvae.

What is the intermediate host of blood trematodes?

Intermediate hosts are snails of the genera Biomphalaria, (S. mansoni), Oncomelania (S. japonicum), Bulinus (S. haematobium, S.

How do you identify a trematode?

Diagnosis of trematode infection is commonly accomplished by identification of eggs in feces or urine. The eggs of most species are structurally distinct and the diagnosis can be made by standard light microscopy. With the exception of fascioliasis, the drug of choice for trematode infections is praziquantel.

What is the infective stage of trematodes?

hominis are called metacercariae—this is the infective stage of the trematodes. The metacercaria encyst on water vegetation such as the water caltrop, where they will remain until eaten by a final host. Water caltrops thrive in ponds fertilized by “night soil” (human feces).

How does Clonorchis sinensis reproduce?

Clonorchis sinensis is hermaphroditic therefore every single sexually mature fluke will produce eggs. Each adult yields a daily production of 4000 eggs for at least six months which are produced by cross-fertilization. The eggs are passed out with the feces of the definitive host.

What is the first intermediate host of all trematodes?

Aquatic snails
The life cycle of this parasite resembles that of Opisthorchis species. Aquatic snails serve as the first intermediate host, white sucker (Catostomus commersoni) serve as the second intermediate host, and humans are incidental hosts.

What is Metagonimus yokogawai?

Metagonimus yokogawai is a trematode that causes metagonimiasis in humans. It also infects cats and dogs. It is geographically distributed in Korea, China, Taiwan, Japan, Siberia, Indonesia, Israel, and Spain. The adults are 1.0–1.5 mm long with eggs measuring 26–28 µm×15–17 µm.

Where does Metagonimus come from?

Metagonimus yokogawai was originally described by Katsurada first reported in 1912 in Taiwan and Japan, and is currently the most prevalent species of Metagonimus in the Far East. This species has been reported to be distributed in Japan, Korea, China, Taiwan, Russia, Rumania, Israel, the Balkan states, and Spain.

What is the difference between M yokogawai and M miyatai?

Some of the old literatures on M. yokogawai actually dealt with M.takahashii or M. miyatai. The unique morphologies of M. yokogawai include the presence of two testes closely adjacent to each other near the posterior end of the body, whereas in M. takahashii and M. miyatai, two testes are more or less separated.

What are the symptoms of yokogawai disease?

In addition to humans, fish-eating mammals (e.g., cats and dogs) and birds can also be infected by M. yokogawai . Mostly the Far East, as well as Siberia, Manchuria, the Balkan states, Israel, and Spain. The main symptoms are diarrhea and colicky abdominal pain.