CLASSIFICATION OF MONIEZIA EXPANSA : SHEEP TAPEWORM​

PHYLUM :- PLATYHELMINTHES (Organ grade, acoelomate flatworms. )

CLASS :- CESTODA (Segmented tapeworms without digestive tube. )

SUB-CLASS :- EUCESTODA (Mesozoic tapeworms, larva with 6 hooks. )

ORDER :- CYCLOPHYLLIDEA (Scolex with four suckers. )

FAMILY :- TAENIIDAE (Uterus with lateral branches.)

GENUS :- Moniezia

SPECIES :- expansa

GEOGRAPHICAL DISTRIBUTION

  • All over the world in sheep raising areas.

HABIT AND HABITAT

  • Commonly found in the small intestine of sheep. Generally 80% sheep are found to be infected by this worm

MONIEZIA EXPANSA : SHEEP TAPEWORM​

GENERAL CHARACTERSTICS OF MONIEZIA EXPANSA : SHEEP TAPEWORM​

  • Commonly called as Sheep tapeworms.
  • Body divisible into scolex, neck and segments. Tapeworms measure approximately 600 cm. 
  • Scolex is adhesive organ and contains suckers. 
  • Neck is short area for forming new segments. 
  • Segments are much broader than long and contain interproglottidal glands.
  • Each mature segment contains double set of genital organs.
  • Life-cycle, includes egg cysticercoid in mites (intermediate host) and adults in sheep. Sheep becomes infested when it grazes grasses containing contaminated mites. 
  • Moniezia expansa causes various histopathological changes in the intestinal mucosa resulting into diarrhoea, dysentry and malabsorption.
MONIEZIA EXPANSA : SHEEP TAPEWORM​

IDENTIFICATION

  • Since the Tapeworm contains, much broader segments than long and all above features and ” hence it is Moniezia expansa.

MONIEZIA EXPANSA : SHEEP TAPEWORM​
MONIEZIA EXPANSA : SHEEP TAPEWORM​
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