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The effects of genetic drift and genomic selection on differentiation and local adaptation of the introduced populations of Aedes albopictus in southern Russiaстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 15 сентября 2021 г.
- Авторы: Konorov Evgenii A., Yurchenko Vyacheslav, Patraman Ivan, Lukashev Alexander, Oyun Nadezhda
- Журнал: PeerJ
- Том: 9
- Год издания: 2021
- Издательство: PeerJ
- Местоположение издательства: San Francisco
- Номер статьи: e11776
- DOI: 10.7717/peerj.11776
- Аннотация: Background: Asian tiger mosquito Aedes albopictus is an arbovirus vector that hasspread from its native habitation areal in Southeast Asia throughout North and SouthAmericas, Europe, and Africa. Ae. albopictus was first detected in the SouthernFederal District of the Russian Federation in the subtropical town of Sochi in 2011.In subsequent years, this species has been described in the continental areas withmore severe climate and lower winter temperatures.Methods: Genomic analysis of pooled Ae. albopictus samples collected in themosquito populations in the coastal and continental regions of the Krasnodar Kraiwas conducted to look for the genetic changes associated with the spread andpotential cold adaptation in Ae. albopictus.Results: The results of the phylogenetic analysis based on mitochondrial genomescorresponded well with the hypothesis that Ae. albopictus haplotype A1a2a1 wasintroduced into the region from a single source. Population analysis revealed the roleof dispersal and genetic drift in the local adaptation of the Asian tiger mosquito.The absence of shared haplotypes between the samples and high fixation indicessuggest that gene flow between samples was heavily restricted. Mitochondrial andgenomic differentiation together with different distances between dispersal routes,natural and anthropogenic barriers and local effective population size reductioncould lead to difficulties in local climatic adaptations due to reduced selectioneffectiveness. We have found genomic regions with selective sweep patterns whichcan be considered as having been affected by recent selection events. The geneslocated in these regions participate in neural protection, lipid conservation, andcuticle formation during diapause. These processes were shown to be important forcold adaptation in the previous transcriptomic and proteomic studies. However, thepopulation history and relatively low coverage obtained in the present article couldhave negatively affect sweep detection.
- Добавил в систему: Оюн Надежда Юрьевна