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Cheyletiella parasitovorax
Synonym(s): Cheyletiella parasitovorax, Host adapted C. yasguri, Walking dandruff
Introduction
Classification
Taxonomy
- Phylum: Arthropoda.
- Class: Euchelicerata.
- Subclass: Arachnida.
- Order: Trombidiformes.
- Family: Cheyletidae.
- Genus: Cheyletiella.
- Species: parasitovorax.
- Five species are currently recognized.
Etymology
- Cheyle = lips; tiella, a diminutive meaning that this is smaller than tia or tea.
- It was initially theorized that adult Cheyletiella mites preyed on other mites, hence the scientific name Cheyletus parasitovorax.
- The mites are visible to the naked eye, and can be seen walking under the scales, hence it is also known as "walking dandruff".
Significance
- Many rabbits carry the mites with no overt signs.
- Zoonotic potential: can cause itching papular dermatitis in humans.
Pathogenesis
- Lives on keratin layer of epidermis (obligate non-burrowing mite), especially on the dorsal surface of the body, and creates pseudotunnels with scales and debris on the skin surface.
- It pierces the skin with its needle like mouth parts and feeds on tissue fluids.
- Creates gray-white flaky, sometimes oily, scaling with a powdery appearance.
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.
- d'Ovidio D & Santoro D (2013) Orodental diseases and dermatological disorders are highly associated in pet rabbits: A case-control study. Vet Derm 24 (5), 531-e125 PubMed.
- Fehr M & Koestlinger S (2013) Ectoparasites in small exotic mammals. Vet Clin Exotic Anim 16 (3), 611-657 PubMed.
- Palmeiro B S, Roberts H (2013) Clinical approach to dermatologic disease in exotic animals. Vet Clin Exotic Anim 16 (3), 523-577 PubMed.
- Rosen L B (2011) Dermatologic manifestations of zoonotic diseases in exotic animals. J Exotic Pet Med 20 (1), 9-13 VetMedResource.
- Mellgren M & Bergvall K (2008) Treatment of rabbit cheyletiellosis with selamectin or ivermectin: a retrospective case study. Acta Vet Scand 50, 1 PubMed.
- Kim S H, Lee J Y, Jun H K et al (2008) Efficacy of selamectin in the treatment of cheyletiellosis in pet rabbits. Vet Derm 19 (1), 26-27 PubMed.
- Kim S H, Jun H K, Song K H et al (2008) Prevalence of fur mites in pet rabbits in South Korea. Vet Derm 19 (3), 189-190 PubMed.
- Fisher M, Beck W & Hutchinson M J (2007) Efficacy and safety of selamectin (Stronghold/Revolution) used off-label in exotic pets. Int J Appl Res Vet Med 5 (3), 87-96 VetMedResource.
- Hoppmann E & Barron H W (2007) Ferret and rabbit dermatology. J Exotic Pet Med 16 (4), 225-237 VetMedResource.
- Cooper P E & Penaliggon J (1997) Use of frontline spray on rabbits. Vet Rec 140 (20), 535-536 PubMed.
- Clyde V L (1996) Practical treatment and control of common ectoparasites in exotic pets. Vet Med 91 (7), 632-637 VetMedResource.
- Akintunde K C, Pate P, Lansdown A B et al (1994) Cheyletid mite infection in laboratory rabbits. Vet Rec 134 (21), 560 PubMed.
- Merchant S R (1990) Zoonotic diseases with cutaneous manifestations - Part 1. Compend Contin Educ 12 (3), 371-377 VetMedResource.
Other sources of information
- Varga Smith M (2006) Skin Diseases. In: Textbook of Rabbit Medicine. 3rd edn. Elsevier, USA. pp 242-267.
- Meredith A (2006) Skin Diseases and Treatment of Rabbits. In: Skin diseases of Exotic Pets. Ed: Paterson S. Blackwell Publishing, UK. pp 300-301.