对来自格陵兰康克鲁斯瓦格的蚊子进行宏基因组分析,发现了一个独特的病毒群落。

Metagenomic analysis of mosquitoes from Kangerlussuaq, Greenland reveals a unique virome.

作者信息

Schilling Mirjam, Jagdev Madhujot, Thomas Huw, Johnson Nicholas

机构信息

Virology Department, Animal and Plant Health Agency, Woodham Lane, Addlestone, KT15 3 NB, Surrey, UK.

Greenland White-fronted Goose Study group/VEO Project, Bristol, UK.

出版信息

Sci Rep. 2025 May 17;15(1):17141. doi: 10.1038/s41598-025-01086-z.

Abstract

Climate change is dramatically affecting vector ecology in extreme environments such as the Arctic. However, little is known about the current status of viruses of arthropod vectors located in such northerly locations. As part of a field survey on the role of wildlife in international movement of zoonotic pathogens, we sampled mammalophilic mosquitoes near the settlement of Kangerlussuaq, Greenland in July 2022 and July 2023 to investigate their virome. The majority of mosquitoes were identified as either Aedes impiger or Aedes nigripes. Metagenomic analysis of RNA extracted from species pools detected a number of novel RNA viruses belonging to a range of different virus families, including Flaviviridae, Orthomyxoviridae, Bunyavirales, Totiviridae and Rhabdoviridae. However, the sequence identities when compared to previously published, were as low as 34% at the amino acid level. Furthermore, a comparison of virome diversity between Aedes species emphasises the uniqueness of both Aedes impiger and Aedes nigripes from this secluded ecosystem. It also highlights the need to better understand the viromes of potential pathogen vectors as the impacts of climate change are experienced in such northerly ecosystems.

摘要

气候变化正在极大地影响北极等极端环境中的病媒生态。然而,对于位于如此偏北地区的节肢动物病媒病毒的现状,人们知之甚少。作为一项关于野生动物在人畜共患病原体国际传播中作用的实地调查的一部分,我们于2022年7月和2023年7月在格陵兰岛康克鲁斯瓦格定居点附近对嗜哺乳动物蚊子进行了采样,以调查它们的病毒组。大多数蚊子被鉴定为艾氏伊蚊或黑足伊蚊。从物种库中提取的RNA的宏基因组分析检测到了一些属于一系列不同病毒科的新型RNA病毒,包括黄病毒科、正粘病毒科、布尼亚病毒目、双链RNA病毒科和弹状病毒科。然而,与先前发表的序列相比,氨基酸水平上的序列同一性低至34%。此外,对伊蚊物种之间病毒组多样性的比较强调了来自这个与世隔绝生态系统的艾氏伊蚊和黑足伊蚊的独特性。这也凸显了在如此偏北的生态系统中感受到气候变化影响时,更好地了解潜在病原体病媒病毒组的必要性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/708b/12085661/c13dca908288/41598_2025_1086_Fig1_HTML.jpg

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