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Results for “MITE INFESTATIONS”

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PubMed2003

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).

Age Factors↗
PubMed1979

IgE antibody response to mite antigens in mite infested mice.

Mice infested at birth with the mouse mite Myocoptes musculinus developed positive skin tests to mite antigens at the age of 5 weeks. Serum IgE antibodies directed against mite antigens were first detected at 6 weeks of age and high levels of IgE were present as long as 1 year later. Similar kinetics of IgE formation were observed in mice infected as adults. Mast cell degranulation by mite extract was demonstrated in connective tissue obtained from the skin of mite infested mice.

Aging↗
PubMed1992

Phoretic and parasitic mites infesting the New World screwworm fly, Cochliomyia hominivorax, following sterile insect releases in Libya.

During the screwworm eradication programme in Libya in 1991, trapped specimens of Cochliomyia hominivorax (Coquerel) were found infested with phoretic mites, Macrocheles muscaedomesticae (Scopoli), or parasitic mites, Trichotromidium muscarum (Riley). The possible sources of infestation and potential effects of mites on screwworm flies are discussed.

Animals↗
PubMed1996

[Clinical and etiological aspects of goat ear mite infestations in Tuscany].

Parasitic otitis associated with Psoroptes sp. mites was diagnosed for the first time in two flocks of goats located in Tuscany, Italy. Some animals presented clinical signs of ear mite infection, but the parasites were also isolated from the ears of two clinically silent goats. A morphometric study was conducted to establish whether there are significant morphological differences between mites collected from the ears of goats and Psoroptes cuniculi collected from the ears of rabbits. Three rabbits were experimentally infected with mites isolated from the auditory canal of goats, while nine goats were infected with mites isolated from rabbits. After three to five months all rabbits and five of the nine goats contained reproducing mite populations in their ears; also the morphometric analysis revealed no difference between rabbit and goat ear mites. It follows that Psoroptes cuniculi represents the etiologic agent of parasitic otitis in both these two animal species.

Animals↗
PubMed1981

Tropical rat mite dermatitis. Report of six cases and review of mite infestations.

Six cases of tropical rat mite (Ornithonyssus bacoti) dermatitis are presented. The patients experienced papular urticaria, and mites were found on and identified in several of the patients. The presence of rodents in or around the home was confirmed in most cases. The role of other parasitic mites found on bats, birds, and snakes is reviewed. The importance of obtaining a history of rodent activity or exposure to other animals is emphasized when considering the cause of arthropod bites.

Adult↗
PubMedDate not supplied

Chigger mite infestation.

This article reports on a 45-year-old woman who presented with pruritus and was diagnosed as having chigger mite infestation, a rare condition. The chigger mite larvae were encountered while the patient was traveling in South America. A small erythematous area with a well-circumscribed papule in the sulcus of the second digit of the right foot was incised and drained. Follow-up examination showed relief of all symptoms, including pain and pruritus. This unusual case presentation underscores the need for all podiatric physicians to obtain a comprehensive history, including history of travel, along with performing a thorough physical examination.

Animals↗
PubMedDate not supplied

Mite infestation.

Explore the source record for details and available documents.

Animals↗
PubMed1995

Sarcoptic mange and production performance of swine: a review of the literature and studies of associations between mite infestation, growth rate and measures of mange severity in growing pigs.

Cost-effective control of sarcoptic mange requires knowledge of the effects of the disease on production. This paper presents a critical review of the literature on the association between sarcoptic mange and reduced production performance of swine. One of the difficulties in interpreting inconsistent findings among studies is lack of information about the severity of disease, which is likely to vary considerably. Lack of standard methods and failure to quantify disease severity preclude meaningful interpretation of experimental results in commercial production. Three experiments with growing pigs were conducted to evaluate associations between sarcoptic mite infestation and growth rate, and to assess pruritic behaviour and mite-induced lesions at slaughter as indices of mange severity. Sarcoptic mange was associated with increased pruritic behaviour and the presence of papular dermatitis at slaughter. Pruritic behaviour decreased over time despite reinfestation and may be subject to numerous behavioural influences. Growth rate tended to be slower in mange infested pigs, but a significant effect of mange infestation on average daily gain was found in only one trial, in which the severity of skin lesions at slaughter was greatest. These observations suggest that the production effects of mange infestation of growing pigs are variable. Evaluating dermatitis lesions at slaughter may be an objective means for assessing the severity of mange infestation and for relating experimental results to commercial swine production.

Animal Husbandry↗
PubMed1995

Demodex (follicular mite) infesting a boy and his pet dog.

Intense iritation and dermatitis, somewhat resembling that produced by scabies can result from various mites living as temporary ectoparasites on the skin of man. Demodex folliculorum is a worm-like mite that infests hair follicles above the level of sebaceous glands in various mammals. In this paper, Demodex folliculorum was recovered from a boy and his pet dog. Both the boy and the dog were successfully treated with permethrin.

Animals↗
PubMed1984

House mouse mites infesting laboratory rodents.

Liponyssoides sanguineus, principal vector of Rickettsia akari, infested mongolian gerbils (Meriones unguiculatus) mice (Mus musculus) and laboratory-reared egyptian gerbils (Meriones libycus). Only a few mites were present on each animal and no manifestations of disease were observed. Numerous mites were present in the bedding.

Animals↗