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首页> 外文期刊>Parasitology >Urban forests as hubs for novel zoonosis: Blood meal analysis, seasonal variation in Culicoides (Diptera: Ceratopogonidae) vectors, and avian haemosporidians
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Urban forests as hubs for novel zoonosis: Blood meal analysis, seasonal variation in Culicoides (Diptera: Ceratopogonidae) vectors, and avian haemosporidians

机译：城市森林作为新型人畜共患病的枢纽：血粉分析，Culicoides（Diptera：Ceratopogonidae）媒介的季节性变化和禽血孢子虫

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Culicoides vectors can transmit a diverse array of parasites and are globally distributed. We studied feeding preferences and seasonal variation of Culicoides (Diptera: Ceratopogonidae) vectors in an urban forest of Germany to determine whether humans living nearby are readily exposed to vector-borne parasites from wild animals. We used a fragment of the mtDNA COI gene to identify hosts from blood meals. We amplified a fragment of the mtDNA cyt b to detect haemosporidian infections in Culicoides abdomens and thoraxes. We detected a total of 22 Culicoides species. Fifty-eight blood meals (84%) were from humans, 10 from birds, and one from livestock. We found Culicoides kibunensis (considered ornithophilic) with 29 human blood meals. Host generalist Culicoides festivipennis and Culicoides obsoletus had 14 human blood meals. Culicoides clastrieri and Culicoides semimaculatus fed on birds; previously humans were their only known host. Six thoraxes and three abdomens were infected with either Haemoproteus pallidulus or Haemoproteus parabelopolskyi. There were changes in Culicoides community structure across months. Culicoides pictipennis was the dominant species during spring, C. kibunensis and C. clastrieri were dominant during summer, and C. obsoletus was dominant by early autumn. All dominant species were generalists feeding on birds, livestock and humans. Our results indicate that humans can serve as a blood source for dominant Culicoides species instead of the normal wild animal hosts in urban areas.
机译：Culicoides载体可传播多种寄生虫，并在全球范围内分布。我们研究了德国城市森林中Culicoides（Diptera：Ceratopogonidae）媒介的摄食偏好和季节性变化，以确定附近居住的人类是否容易暴露于野生动物媒介传播的寄生虫中。我们使用了mtDNA COI基因的片段来鉴定血粉中的宿主。我们扩增了mtDNA cyt b的一个片段，以检测库蚊腹部和胸部的血孢子虫感染。我们检测到总共22个Culicoides物种。五十八份血餐（84％）来自人类，十份来自鸟类，一份来自牲畜。我们发现带有29种人类血粉的Culicoides kibunensis（考虑嗜鸟）。主持人通才Culicoides festivipennis和Culicoides obsoletus食用了14份人血。以鸟为食的Culicoides clastrieri和Culicoides semimaculatus;以前，人类是他们唯一已知的宿主。六个胸部和三个腹部感染了苍白变形杆菌或副变形嗜血杆菌。在过去的几个月中，Culicoides社区的结构有所变化。在春季，小种Culicoides pictipennis是优势种，在夏天，Cibicunensis和C. clastrieri是优势种，而在早秋之前，C。obsoletus是优势种。所有优势物种都是以鸟类，牲畜和人类为食的通才。我们的研究结果表明，人类可以作为主要库里奇类物种的血液来源，而不是城市地区的正常野生动物宿主。

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