General Parasitology and Helminthology: Morphology

Morphology

MORPHOLOGY OF FASCIOLA HEPATICA AND F.GIGANTICA

F.gigantica

Leaf shaped large size. 25 - 75 mm in length, 12 mm in breadth and broader anteriorly than posteriorly.
Anterior cone is smaller. They have indistinct shoulder (not so prominent).
Cuticle have spine (spinose tegment). The body is more transparent.
The oral and ventral suckers are present. The ventral sucker situated at the level of shoulder and is larger than oral sucker. The intestinal caeca is branched and diverticulated both externally and internally.
Two follicular branched testes placed in the middle region. Single branched ovary with a coiled uterus lies anterior to the testes.
Genital opening anterior to the ventral sucker. Numerous vitellaria placed laterally and 2 transverse vitellaine ducts.

F.hepatica Click here...

OS and VS are same size.
Prominent shoulder.
Testes placed at the posterior region.
Comparatively smaller than
F. gigantica in size
Presence of anterior cone and distinct shoulder.
Intestinal caeca branched and diverticulated only externally.

Fasciola-hep

Fasciola hepatica

Last modified: Tuesday, 19 June 2012, 7:00 AM

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VPA 211: General Veterinary Parasitology and Helminthology (3+1)

Morphology

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