Chorioptes spp

From Cow
Adult Chorioptes bovis mite
Lesion in the perineum of a cow affected by chorioptic mange[1]

Chorioptes spp are a parasitic mite of cattle which cause a skin disease known as chorioptic mange[2].

Chorioptic mange is a contagious disease spread by direct contact or via fomites.

Species which have been reported as parasitic on cattle include:

  • Chorioptes bovis
  • Chorioptes texanus

This parasite commonly affects the pasterns of cattle but can also affect the perineum and other parts of the body.

Clinical signs include alopecia and thickening of the skin due to secondary pruritus, which is mild to modreate depending on the degree of infestation.

Diagnosis is made by deep skin scrapings, skin biopsy, or response to therapy.

Treatment relies primarily on insecticidal washes or topical drugs such as doramectin, eprinomectin[3], ivermectin[4][5] or fipronil.

References

  1. Suh GH et al (2008) The first outbreak of Chorioptes texanus (Acari: Psoroptidae) infestation in a cattle farm in Korea. Korean J Parasitol 46(4):273-278
  2. Kollbrunner M et al (2010) Epidemiological aspects of Chorioptes-mange in dairy cows in Switzerland: a field study. Schweiz Arch Tierheilkd 152(5):231-236
  3. Kollbrunner M et al (2009) Chorioptic mange in dairy cattle: a new assessment for its control. Berl Munch Tierarztl Wochenschr 122(9-10):358-363
  4. Rehbein S et al (2003) Productivity effects of bovine mange and control with ivermectin. Vet Parasitol 114(4):267-284
  5. Genchi C et al (2008) Comparative evaluation of two ivermectin injectable formulations against psoroptic mange in feedlot cattle. Vet Parasitol 158(1-2):110-116