Atlas of livestock parasites
digitized collection of microscopical preparations

Atlas of Parasites Contents Information sources Glossary Administration

Demodex bovis

Category:


Species:
Ectoparasite


Description:
Untitled document

Demodex bovis
Demodectic or follicular mite

General Description:
These unique, elongated mites are about 0.25 mm long with four pairs of short, stout legs, and a long abdomen transversely striated on top and bottom.

Life Cycle:
Life cycle not clearly understood. Suspected to be similar to typical mite life cycle.

Location:
Skin of neck, legs, shoulders, breast, and dewlap.

Geographical Distribution:
Worldwide prevalence, but of lower incidence than the common mange mites.

Significance:
Damage to the skin reduces production of leather from carcasses, but it is not prevalent enough to be considered a major parasite of cattle.

Effects on Host:

Demodectic mites enter hair follicles and sebaceous glands of the skin, causing chronic inflammation, thickening of skin, and hair loss. Bacteria, often Staphylo¬cocci, enter frequently and stimulate abscess or nodule formation.

Diagnostic Information:
Cheesy material in nodules contains many mites that can be seen microscopically. Longstanding nodules of skin are characteristic of infestation with this mite.

Control:
No known methods are very successful. Systemic and topical applications of chemical compounds have given some relief.


Pictures:

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