Difference between revisions of "Trichuris"
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* Also known as the "'''whipworm'''" | * Also known as the "'''whipworm'''" | ||
** Derives its name from its characteristic whiplike shape | ** Derives its name from its characteristic whiplike shape | ||
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| + | == ''Trichuris'' Species == | ||
| + | *The whipworms have a stout posterior end and a long narrow neck, which is superficially inserted into the caecal mucosa | ||
| + | *Eggs are brown, barrel-shaped, with a plug at either end, and can survive for up to 12 years | ||
| + | *The infective stage is the embryonated egg. | ||
| + | *The life-cycle is direct | ||
| + | *After the egg is swallowed, the larva initially forms a mucosal nodule before emerging into the lumen | ||
==Species== | ==Species== | ||
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** Anemia | ** Anemia | ||
** Dehydration | ** Dehydration | ||
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| + | [[Category:Trichinelloidea]] | ||
Revision as of 11:09, 26 April 2010
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This article is still under construction. |
- Also known as the "whipworm"
- Derives its name from its characteristic whiplike shape
Trichuris Species
- The whipworms have a stout posterior end and a long narrow neck, which is superficially inserted into the caecal mucosa
- Eggs are brown, barrel-shaped, with a plug at either end, and can survive for up to 12 years
- The infective stage is the embryonated egg.
- The life-cycle is direct
- After the egg is swallowed, the larva initially forms a mucosal nodule before emerging into the lumen
Species
- Trichuris vulpis - dog whipworm
- Trichuris campanula (Europe) and Trichuris serrata (North America) - cat whipworms.
- Are quite rare.
- Trichuris suis - pig whipworm
Life Cycle
- Faeco-oral spread
- Eggs become infective after 10-14 days in soil.
- Larvae hatch in small intestine.
- Grow and moult.
- Finally take up resisidence in large intestine.
- I.e. NO tissue migratory phase.
Clinical
- Adult buries its thin anterior half into the intestinal mucosa and feeds on tissue secretions (not blood).
- The caecum and colon are the most commonly infected sites.
- Causes eosinophilia.
- Signs may include:
- Diarrhoea
- Anemia
- Dehydration