Encyclopedia of Parasitology

2008 Edition
| Editors: Heinz Mehlhorn

Moniezia expansa

Reference work entry
DOI: https://doi.org/10.1007/978-3-540-48996-2_1990

Name honors R.L. Moniez (1852–1936).

Synonym

English: Sheep Tapeworm.

Classification

Genus of  Eucestoda, family Anoplocephalidae.

Life Cycle

Morphology

Moniezia expansa worms occur worldwide in the small intestine of ruminants, reach a length of 10 m, and their posterior proglottids are very broad (∼2.5 cm) (Figs. 1, 2, page 842). These proglottids are characterized by the presence by a double set of sexual organs being situated at the 2 lateral sides of the proglottids. Intermediate hosts are oribatid mites, which are fed together with grass. The prepatent period takes about 30–52 days, patency lasts 3–8 months. Anaemia, diarrhoea, loss of weight are the most common signs of disease. Diagnosis is done by finding the characteristic proglottids around the anus or by the determination of eggs in the faeces.
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Copyright information

© Springer-Verlag Berlin Heidelberg New York 2008