CESTODOSIS MONIEZIASIS : Moniezia expansa Moniezia benedini Sensitive animal:  M. benedini: cattle (main host) & others ruminants M. expansa: sheep,goat,cattle,& others ruminants Predilection: Small intestine Route of infections: Ingested by cysticercoid g mites (fam: Oribatidae) together with the grass

Moniezia

Moniezia

scolex

scolex

adult

Moniezia

Moniezia

segment of Moniezia benedeni

Moniezia benedeni

Moniezia benedeni

Egg of Moniezia benedeni

Egg of Moniezia expansa

Egg of Moniezia expansa

M. expansa M. benedeni

Broad tapeworm - Moniezia expansa The life cycle of Moniezia expansa involves sheep as the definitive host and soil mites as the intermediate host.  The tapeworm's eggs are passed in the sheep's feces, and mites are infected when they eat the eggs; the metacestode stage in the mite is called a cysticercoid.  Sheep are infected when then ingest infected mites. This species of tapeworm is unusual in that each proglottid contains two sets of female reproductive organs

Hymenolepis nana (the dwarf tapeworm) Geographical distribution Location in host: the adults are found in the lumen of the upper three-quarters of the ileum. Morphology: It is a very short tapeworm, measuring 15-40 mm and has approximately 200 proglottids. Scolex : retractible rostellum with a single row of 20-30 small hooks and 4 suckers. Neck is long and slender. Mature proglottids are broader than long with a single common genital pore on one side of strobila.

Life cycle of Hymenolepis

H. nana( adult worm)

Mature proglottids, Cysticercoid H. nana

Proglottids of H. nana

Laboratory Diagnosis Eggs of Hymenolepis nana                               A B

Hymenolepis diminuta life cycle

suckers H. nana H. diminuta

Eggs of Hymenolepis diminuta                                               A B

Cysticercoid