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. 2015 Dec;39(4):673-6.
doi: 10.1007/s12639-013-0405-3. Epub 2013 Nov 26.

Demodicosis caused by Demodex canis and Demodex cornei in dogs

S Sivajothi  1 , B Sudhakara Reddy  2 , V C Rayulu  1
Affiliations

Demodicosis caused by Demodex canis and Demodex cornei in dogs

S Sivajothi et al. J Parasit Dis. 2015 Dec.

Abstract

Two mongrel dogs aged between 7 and 9 months in a same house were presented to the clinics with a history of chronic dermatitis associated with pruritus. Clinical examination revealed presence of primary and secondary skin lesions on the face, around the ears, chin, neck, fore limbs and lateral abdomen. Examination of skin scrapings revealed Demodex cornei (majority) and D. canis (minority) in both the dogs. By using hair pluck examination D. canis were detected and by tape impression smears examination large number of adult short-tail Demodex mites were found. D. cornei was identified by based on the morphological characters including short opisthosoma with blind and round terminal end. Mean length of total body, opisthosoma of both types of the mites were differed statistically significant (P < 0.01) but gnathosoma and podosoma did not differ significantly (P > 0.05). Dogs were treated with daily oral ivermectin @ 500 μg/kg/day, external application of amitraz along with supportive therapy. After completion of 45 days of therapy dogs were recovered completely without any side effects.

Keywords: Demodex canis; Demodex cornei; Demodicosis; Dogs.

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Figures

Fig. 1
Fig. 1
Dog affected with Demodicosis—Periorbital lesions
Fig. 2
Fig. 2
Demodex mites in skin scrapings (10X)
Fig. 3
Fig. 3
Ventral view of the adult D. cornei in tape impression smears (40X)
Fig. 4
Fig. 4
Ventral view of the ovigerous female of adult D. canis in scrapings (20X)
See this image and copyright information in PMC

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