Factors affecting the prevalence of mange-mite infestations in stray dogs of Yucatán, Mexico.
The aim of the present study was to determine the factors affecting the prevalence of mange-mite infestations in stray dogs of Yucatán, Mexico. The study was carried out in 200 stray dogs of Mérida capital city of Yucatán, Mexico. Four samples (head, thoracic-abdominal area, extremities and ear) were taken from each animal by skin scraping and examined microscopically in 10% KOH solution to detect the presence of mites. Mites were also collected from the external ear canal of dogs using cotton-tipped swabs. The prevalence of different mite species was calculated. A primary screening was performed using 2xK contingency tables of exposure variables. All variables with P< or =0.20 were analyzed by a logistic-binomial regression. The overall prevalence was 34%. Demodex canis (23.0%) was the most frequent mite, followed by Sarcoptes scabei var. canis (7.0%) and Otodectes cynotis (3.5%). The following factors were found: body condition (bad, OR: 5.35, CI 95%: 1.66-17.3; regular, OR: 3.72, CI 95%: 1.39-9.99) and the presence of macroscopic lesions of dermatosis (OR: 42.80, CI 95%: 13.65-134.24).
Rodriguez-Vivas
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RI
Departamento de Parasitología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Km. 15, Carretera Mérida-Xmatkuil, CP 97100 Mérida, Yucatán AP 116, Mexico. rvovas@tunku.uady.mx
Ortega-Pacheco
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A
Rosado-Aguilar
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JA
Bolio
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GM
D000367:Age Factors; D000818:Animals; D004283:Dog Diseases / Q000453:epidemiology* / Q000469:parasitology* / Q000473:pathology; D004285:Dogs; D004424:Ear Canal / Q000469:parasitology / Q000473:pathology; D005260:Female; D016015:Logistic Models; D008297:Male; D008800:Mexico / Q000453:epidemiology; D008924:Mite Infestations / Q000453:epidemiology / Q000469:parasitology / Q000473:pathology / Q000662:veterinary*; D008925:Mites / Q000254:growth & development*; D015995:Prevalence; D012737:Sex Factors; D012876:Skin Diseases, Parasitic / Q000469:parasitology / Q000473:pathology / Q000662:veterinary*