Detection of Usutu virus in a house martin bug Oeciacus hirundinis (Hemiptera: Cimicidae): implications for virus overwintering in a temperate zone.

IF 1.8 3区医学 Q2 PARASITOLOGY

Parasitology Research Pub Date : 2024-08-20 DOI:10.1007/s00436-024-08325-8

Silvie Šikutová, Jan Mendel, Kristína Mravcová, Romana Kejíková, Zdeněk Hubálek, Helge Kampen, Ivo Rudolf

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Abstract

The family Cimicidae comprises ectoparasites feeding exclusively on the blood of endothermic animals. Cimicid swallow bugs specifically target swallow birds (Hirundinidae) and their nestlings in infested nests. Bugs of the genus Oeciacus are commonly found in mud nests of swallows and martins, while they rarely visit the homes of humans. Although-unlike other cimicid species-the house martin bug Oeciacus hirundinis has never been reported as a vector of zoonotic pathogens, its possible role in arbovirus circulation in continental Europe is unclear. Samples of O. hirundinis were therefore collected from abandoned house martin (Delichon urbicum) nests in southern Moravia (Czech Republic) during the 2021/2022 winter season and checked for alpha-, flavi- and bunyaviruses by RT-PCR. Of a total of 96 pools consisting of three adult bugs each, one pool tested positive for Usutu virus (USUV)-RNA. Phylogenetic analysis showed that the virus strain was closely related to Italian and some Central European strains and corresponded to USUV lineage 5. The detection of USUV in O. hirundinis during wintertime in the absence of swallows raises the question for a possible role of this avian ectoparasite in virus overwintering in Europe.

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在一种家貂蝽 Oeciacus hirundinis（半翅目：Cimicidae）中检测到乌苏图病毒：对病毒在温带地区越冬的影响。

恙螨科由专门吸食内热动物血液的体外寄生虫组成。燕子蝽专门以燕子（燕科）及其巢中的雏鸟为攻击目标。Oeciacus 属的虫子常见于燕子和燕貂的泥窝中，但它们很少光顾人类的家园。虽然与其他螨类不同，家燕蝽从未被报道为人畜共患病原体的传播媒介，但它在欧洲大陆虫媒病毒循环中可能扮演的角色尚不清楚。因此，我们在 2021/2022 年冬季从摩拉维亚南部（捷克共和国）被遗弃的家貂（Delichon urbicum）巢中采集了 O. hirundinis 样本，并通过 RT-PCR 检测了甲型、黄型和布尼亚病毒。在由 3 只成虫组成的 96 个病毒库中，有一个病毒库的乌苏图病毒（USUV）-RNA 检测呈阳性。系统进化分析表明，该病毒株与意大利和中欧的一些病毒株关系密切，属于 USUV 第 5 系。在没有燕子的冬季，在燕鸥体内检测到了乌苏图病毒，这提出了一个问题，即这种鸟类外寄生虫可能在欧洲的病毒越冬中扮演了重要角色。

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来源期刊

Parasitology Research 医学-寄生虫学

CiteScore

4.10

自引率

5.00%

发文量

346

审稿时长

6 months

期刊介绍： The journal Parasitology Research covers the latest developments in parasitology across a variety of disciplines, including biology, medicine and veterinary medicine. Among many topics discussed are chemotherapy and control of parasitic disease, and the relationship of host and parasite. Other coverage includes: Protozoology, Helminthology, Entomology; Morphology (incl. Pathomorphology, Ultrastructure); Biochemistry, Physiology including Pathophysiology; Parasite-Host-Relationships including Immunology and Host Specificity; life history, ecology and epidemiology; and Diagnosis, Chemotherapy and Control of Parasitic Diseases.