<i>Demodex</i> spp. in the hair follicles of rhesus macaques (<i>Macaca mulatta</i>)

Starost, Matthew F.; Karjala, Zuzana; Brinster, Lauren R.; Miller, Georgina; Eckhaus, Michael; Bryant, Mark A.; Hoffman, Victoria

doi:10.1111/j.1600-0684.2005.00112.x

Cited by 17 publications

(6 citation statements)

References 4 publications

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“…D. ovis has caused localized nodular lesions on the face of sheep. Previous research also demonstrated the nodular lesions of demodicosis (Starost et al 2005). Skin biopsies collected from sheep and goats infested by Demodex revealed acanthotic and hyperkeratotic epidermis.…”

Section: Discussionmentioning

confidence: 85%

Ectoparasites are the major causes of various types of skin lesions in small ruminants in Ethiopia

Chanie

Negash

Sirak

2010

Trop Anim Health Prod

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Ectoparasites are the major causes of skin lesions in animals. Clinical, skin scraping examination, and histopathological studies were conducted to identify and characterize skin lesions in small ruminants caused by ectoparasites. Mange mites, lice, sheep keds, and ticks were collected from the skin of affected animals for species identification. Skin biopsies were collected from affected part of the skin and fixed in 10% neutral buffered formalin for histopathology. Of 1,000 sheep and 600 goats examined, 815 (81.50%) sheep and 327 (54.5%) goats were infested with one or more types of ectoparasites. Sarcoptes scabiei var ovis, Demodex ovis, Psoroptes ovis, Bovicola ovis, Melophagus ovinus, and Amblyomma variegatum and other tick species were identified from sheep. S. scabiei var caprae, Demodex caprae, Linognathus stenopsis, and A. variegatum and other tick species were identified from goats. Gross skin lesions or defects observed on the skin include stained and ragged wool, loss of wool/hair, nodules, crusts, lichenification, and fissuring. Microscopic evaluation of H and E stained skin sections revealed lesions in the epidermal layer such as hyperkeratosis, acanthosis, and melanin inconsistency on the basal cells of the epidermis. Follicular keratosis, perifolliculitis, frunculosis, perivasculitis, and aggregates of inflammatory cells (of acute and chronic type) with fibrosis were experiential in the dermal layer of the skin. Most of the skin lesions caused by ectoparasites are overlapping. Thus, ectoparasites control program should be executed to reduce skin lesions as skins are the major export commodity of the country.

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Section: Discussionmentioning

confidence: 85%

Ectoparasites are the major causes of various types of skin lesions in small ruminants in Ethiopia

Chanie

Negash

Sirak

2010

Trop Anim Health Prod

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“…More recently, Demodex spp. were reported in the hair follicles of immunocompetent and immunocompromised rhesus macaques 103 . In this study, mites were found in the perineal and facial skin of 19 of 53 rhesus monkeys at necropsy regardless of age, sex or immune status.…”

Section: Introductionmentioning

confidence: 46%

Nonhuman primate dermatology: a literature review

Bernstein¹,

Didier

2009

Veterinary Dermatology

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In general, veterinary dermatologists do not have extensive clinical experience of nonhuman primate (NHP) dermatoses. The bulk of the published literature does not provide an organized evidence-based approach to the NHP dermatologic case. The veterinary dermatologist is left to extract information from both human and veterinary dermatology, an approach that can be problematic as it forces the clinician to make diagnostic and therapeutic decisions based on two very disparate bodies of literature. A more cohesive approach to NHP dermatology – without relying on assumptions that NHP pathology most commonly behaves similarly to other veterinary and human disease – is required. This review of the dermatology of NHP species includes discussions of primary dermatoses, as well as diseases where dermatologic signs represent a significant secondary component, provides a first step towards encouraging the veterinary community to study and report the dermatologic diseases of nonhuman primates.

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“…mites have been documented in many nondomestic mammalian species 3,4,6,8,10,11,14-18, 23,26,[30][31][32]34 and all of the major domesticated mammal species, 28 but only occasionally do these mites cause demodecosis. An undescribed demodectic mite in hyraxes has previously been documented.…”

Section: Discussionmentioning

confidence: 99%

Generalized Demodecosis in Three Sibling, Juvenile Rock Hyraxes (Procavia capensis)

Takle¹,

Suedmeyer²,

Mertins³

et al. 2010

Journal of Zoo and Wildlife Medicine

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One female and two male 4-mo-old, sibling rock hyraxes (Procavia capensis) presented with severe generalized dermatitis characterized by nonpruritic, nonalopecic, mildly encrusted, focally, ulcerated pustular nodules. The dorsum, limbs, and dorsal cranium were most severely affected. Skin scrapings, histopathology, and scanning electron microscopy revealed the presence of various life stages of a novel Demodex sp. As a result of the generalized nature of infestation, treatment began with ivermectin and then changed to doramectin, at a dose of 0.6 mg/kg s.c. every 7 days. Weekly skin scrapings and intermittent blood work, including serum protein electrophoresis, were used to evaluate treatment response. Complete resolution, as determined by two consecutive negative skin scrapings, was noted in all three hyraxes within 10-14 wk.

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Demodex spp. in the hair follicles of rhesus macaques (Macaca mulatta)

Cited by 17 publications

References 4 publications

Ectoparasites are the major causes of various types of skin lesions in small ruminants in Ethiopia

Ectoparasites are the major causes of various types of skin lesions in small ruminants in Ethiopia

Nonhuman primate dermatology: a literature review

Generalized Demodecosis in Three Sibling, Juvenile Rock Hyraxes (Procavia capensis)

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