Department of Animal Pathology, University of Zaragoza, Zaragoza, Spain.
Department of Animal Pathology, University of Zaragoza, Zaragoza, Spain.
J Comp Pathol. 2020 Nov;181:92-96. doi: 10.1016/j.jcpa.2020.10.003. Epub 2020 Nov 23.
Lesions caused by trombiculid mite larvae ('chiggers') in birds have been inadequately described. A juvenile red-legged partridge (Alectoris rufa) presented with multifocal, crater-like lesions of necrotizing dermatitis, which often contained multiple orange mites. Microscopically, there was a nodular necrotizing and pyogranulomatous dermatitis with occasional intralesional arthropods. Histologically, the mites were readily identified by the presence of stylostomes within the necrotic areas. Morphological and morphometrical studies on isolated mites identified them as Neoschoengastia (Hypogastia) simonovichi. This is the first report of N. simonovichi as an aetiological agent of severe trombiculosis in wild birds in Western Europe. Infestation with this parasite requires further study to understand its role in animal and human trombiculosis and its potential role as a vector of infectious, including zoonotic, agents.
由恙螨幼虫（“恙螨”）引起的鸟类病变描述不足。一只幼年红腿鹧鸪（Alectoris rufa）出现了多发性、火山口样坏死性皮炎病变，其中常含有多个橙色螨虫。显微镜下，存在结节性坏死和化脓性性皮炎，偶尔有皮内节肢动物。组织学上，坏死区存在刚毛可轻易识别螨虫。对分离螨虫的形态学和形态计量学研究将其鉴定为 Neoschoengastia (Hypogastia) simonovichi。这是 N. simonovichi 作为西欧野生鸟类严重恙螨病病因的首次报道。这种寄生虫的感染需要进一步研究，以了解其在动物和人类恙螨病中的作用及其作为传染性（包括人畜共患病）病原体载体的潜在作用。
