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Overwintering Culex torrentium in abandoned animal burrows as a reservoir for arboviruses in Central Europe

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cris.virtual.author-orcid0000-0002-9305-2306
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dc.abstract.enCulex pipiens s.s./Culex torrentium belong to the most widespread mosquito taxa in Europe and are the main vectors of Sindbis, West Nile and Usutu virus. The adult overwintering females can act as reservoir for these arthropod-borne viruses (arboviruses), thus contributing to their local persistence when transmission cycles are interrupted during the winter. However, the main overwintering sites of Cx. torrentium are unknown. In a study from 2017, 3455 Cx. pipiens s.s./Cx. torrentium specimens were collected from abandoned animal burrows in Poznan, Poland. These specimens were retrospectively identified to species-level with a PCR assay, which revealed Cx. torrentium as dominant species (> 60%). Motivated by these results, we conducted a field study from February to July 2022 to systematically analyse the overwintering site patterns of Cx. pipiens s.s./Cx. torrentium. Mosquitoes were sampled using pipe traps in abandoned animal burrows (n = 20) and with aspirators in nearby anthropogenic overwintering sites (n = 23). All Cx. pipiens s.s./Cx. torrentium were screened for Flaviviridae RNA. In total, 4710 mosquitoes of five different taxa were collected from anthropogenic sites. 3977 of them were identified as Cx. p. pipiens/Cx. torrentium (Cx. p. pipiens: 85%, Cx torrentium: 1%, pools with both species: 14%). In contrast, only Cx. p. pipiens/Cx. torrentium (1688 specimens) were collected from animal burrows dominated by Cx. torrentium (52%), followed by pools with both species (40%) and Cx. p pipiens (8%). A single pool of 10 Cx. torrentium specimens collected from an animal burrow was positive for Usutu virus. The detection of Usutu virus demonstrates that Cx. torrentium can act as winter reservoir for arboviruses. Abandoned animal burrows may by the primary overwintering site for the species and should be considered in future surveillance programmes, when sampling overwintering mosquitoes.
dc.affiliationWydział Leśny i Technologii Drewna
dc.affiliationWydział Medycyny Weterynaryjnej i Nauk o Zwierzętach
dc.affiliation.instituteKatedra Botaniki i Siedliskoznawstwa Leśnego
dc.affiliation.instituteKatedra Zoologii
dc.contributor.authorSauer, Felix G.
dc.contributor.authorLange, Unchana
dc.contributor.authorSchmidt-Chanasit, Jonas
dc.contributor.authorKiel, Ellen
dc.contributor.authorWiatrowska, Blanka
dc.contributor.authorMyczko, Łukasz
dc.contributor.authorLühken, Renke
dc.date.access2025-10-29
dc.date.accessioned2025-10-29T06:57:42Z
dc.date.available2025-10-29T06:57:42Z
dc.date.copyright2023-05-29
dc.date.issued2023
dc.description.accesstimeat_publication
dc.description.bibliographyil., bibliogr.
dc.description.financepublication_nocost
dc.description.financecost0,00
dc.description.if4,1
dc.description.numberJune 2023
dc.description.points100
dc.description.versionfinal_published
dc.description.volume16
dc.identifier.doi10.1016/j.onehlt.2023.100572
dc.identifier.issn2352-7714
dc.identifier.urihttps://sciencerep.up.poznan.pl/handle/item/5568
dc.identifier.weblinkhttps://www.sciencedirect.com/science/article/pii/S2352771423000927
dc.languageen
dc.relation.ispartofOne Health
dc.relation.pagesart. 100572
dc.rightsCC-BY-NC-ND
dc.sciencecloudnosend
dc.share.typeOPEN_JOURNAL
dc.subject.enanimal burrow
dc.subject.enCulex torrentium
dc.subject.enoverwintering
dc.subject.enPoland
dc.subject.enusutu virus
dc.titleOverwintering Culex torrentium in abandoned animal burrows as a reservoir for arboviruses in Central Europe
dc.typeJournalArticle
dspace.entity.typePublication
oaire.citation.volume16