Atlas of livestock parasites
digitized collection of microscopical preparations

Atlas of Parasites Contents Information sources Glossary Administration

Eurytrema pancreaticum



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"pancreatic fluke"

Distribution: Asia, parts of South America.

Host: Adult fukes are found in the pancreatic ducts of small ruminants, cattle, camels, pigs, and occasionally humans. Flukes are also occasionally found in the bile ducts of liver and small intestine. 

Life Cycle:  Indirect fluke life cycle, with two intermediate hosts. The eggs produced by adult flukes leave the host in manure. Snails are the first intermediate host. Two generations of sporocysts occur in the snails. These produces cercariae which are deposited on the pasture and such are eaten by grasshoppers. Metacercariae develop in grasshopper or cricket (second intermediate host) transmits the infection when ingested by the final host.  Ingestion of infected grasshoppers on pasture as produces infection in cattle.        

Diagnosis: Typical flukes are 8 to 16 mm long and to 8.5 mm wide. Bodies are thick, with large suckers. Eggs appear in feces. A sedimentation test will detect the small, brown eggs in the feces.       

Size: 44–48 × 23–36 µm   

Clinical features: Many infections are subclinical. Heavy worm burdens can cause fibrosis of the ductus  and pancreatic atrophy, resulting in weight loss and poor condition. Ducts of pancreas may become inflamed. Eurytrema is not a serious threat unless a herd is very heavily infected. Poor conditions (general malaise, emaciation) may occur in heavily infected animals.   

Control: No satisfactory control is available.


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