equis - Articles
Onchocerca cervicalis
Introduction
Classification
Taxonomy
- Phylum:Nematoda.
- Superfamily:Filaroidea.
- Genus:Onchocerca.
- Species:cervicalis.
Distribution
- Very common where high numbers of the vectors,Culicoidesspp are found.
- High incidences reported in USA (25-100% horses are infested), Argentina, Australia.
- Infections only occasionally diagnosed in Northern Europe.
- Global warming and other changes in climate may increase prevalence.
Significance
- 4th stage larve (microfilariae) cause dermatitis and conjunctivitis/blepharitis Skin: onchocerciasis .
- Formerly implicated as a cause of 'fistulous withers'.
Active Forms
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Resting Forms
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Clinical Effects
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Diagnosis
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Further Reading
Publications
Refereed papers
- Recent references from PubMed and VetMedResource.
- Mancebo O A, Verdi J H and Bulman G M (1997) Comparative efficacy of moxidectin 2% equine oral gel and ivermectin 2% equine oral paste against Onchocerca cervicalis (Raillet and Henry, 1910) microfilariae in horses with naturally acquired infections in Formosa (Argentina). Vet Parasitol 73 243-248 PubMed.
- Klei T R, Torbert B, Chapman M R & Foil L (1983) Prevalence of Onchocerca cervicalis in equids in the Gulf Coast Region. Am J Vet Res 45 (8) 1646-1647 PubMed.
- Lloyd S and Soulsby E J L (1978) Survey for infection with Onchocerca cervicalis in horses in eastern United States. Am J Vet Res 39, 1962-1963 PubMed.