Difference between revisions of "Onchocerca spp."
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*In [[Parasitic skin infections - Pathology#Onchocerciasis|skin infections]] | *In [[Parasitic skin infections - Pathology#Onchocerciasis|skin infections]] | ||
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| + | Horses: | ||
| + | === ''ONCHOCERCA'' SPECIES === | ||
| + | ==== General ==== | ||
| + | *One species, ''O. cervicalis'' (= ''O.reticulata''). | ||
| + | *Large filarial nematode (<30cm); ligamentum nuchae (and limb connective tissue). | ||
| + | |||
| + | ==== Life-Cycle ==== | ||
| + | *Indirect LC, similar to that fo cattle ''Onchocerca'' (which are different species). | ||
| + | *Intermediate host = midge (''Culicoides'' species). | ||
| + | |||
| + | ==== Pathogenicity ==== | ||
| + | *Limited significance. | ||
| + | *Localised hypersensitivity (oedematous) reaction - to dead/dying microfilariae along ventral abdominal midline (sometimes occurs after ivermectin treatment for general worm control). | ||
| + | *Corneal opacity (very rare in UK) - associated with microfilariae. | ||
| + | |||
[[Category:Filarioidea]] | [[Category:Filarioidea]] | ||
| + | [[Category:Horse_Nematodes]] | ||
Revision as of 22:34, 26 April 2010
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This article is still under construction. |
Horses:
ONCHOCERCA SPECIES
General
- One species, O. cervicalis (= O.reticulata).
- Large filarial nematode (<30cm); ligamentum nuchae (and limb connective tissue).
Life-Cycle
- Indirect LC, similar to that fo cattle Onchocerca (which are different species).
- Intermediate host = midge (Culicoides species).
Pathogenicity
- Limited significance.
- Localised hypersensitivity (oedematous) reaction - to dead/dying microfilariae along ventral abdominal midline (sometimes occurs after ivermectin treatment for general worm control).
- Corneal opacity (very rare in UK) - associated with microfilariae.