Difference between revisions of "Strongylus vulgaris"
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| + | ''Strongylus vulgaris'' is a parasite of horses. | ||
| + | |||
| + | ==Appearance== | ||
| + | *Dark red | ||
| + | *Well developed buccal capsule in male | ||
| + | |||
| + | ==Life cycle== | ||
| + | *Eggs shed in faeces onto pasture | ||
| + | *Develop into L3 larvae | ||
| + | *Ingested by horse | ||
| + | *Penetrate intestine mucosa | ||
| + | *Moult in 7 days to L4 in sub-mucosa | ||
| + | *L4 migrate to cranial mesenteric artery | ||
| + | *Develop over months | ||
| + | *Moult to L5 | ||
| + | *Migrate to caecum and colon | ||
| + | *Form nodules around the larvae | ||
| + | *Nodules rupture into the lumen of the intestine | ||
| + | *Adults live in the caecum and colon | ||
| + | |||
| + | ==Pathogenesis== | ||
| + | By larvae: | ||
| + | *Disruption to endothelium of blood vessel | ||
| + | * May cause [[Intestines Vascular Disturbances - Patholgoy#Arterial thromboembolism |arterial thromboembolism]] in the horse. | ||
*May cause intestinal infarcts, see [[Thrombosis - Pathology#Intestinal Infarcts|General Pathology]] | *May cause intestinal infarcts, see [[Thrombosis - Pathology#Intestinal Infarcts|General Pathology]] | ||
| + | By adults: | ||
| + | *Accidental damage to blood vessels as a result of feeding on intestinal mucosa | ||
Revision as of 20:18, 15 January 2010
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This article is still under construction. |
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Strongylus vulgaris is a parasite of horses.
Appearance
- Dark red
- Well developed buccal capsule in male
Life cycle
- Eggs shed in faeces onto pasture
- Develop into L3 larvae
- Ingested by horse
- Penetrate intestine mucosa
- Moult in 7 days to L4 in sub-mucosa
- L4 migrate to cranial mesenteric artery
- Develop over months
- Moult to L5
- Migrate to caecum and colon
- Form nodules around the larvae
- Nodules rupture into the lumen of the intestine
- Adults live in the caecum and colon
Pathogenesis
By larvae:
- Disruption to endothelium of blood vessel
- May cause arterial thromboembolism in the horse.
- May cause intestinal infarcts, see General Pathology
By adults:
- Accidental damage to blood vessels as a result of feeding on intestinal mucosa