20.500.12556/RUP-21796 The genetic trail of the invasive mosquito species Aedes koreicus from the east to the west of Northern Italy Background Aedes koreicus is native to Far East Asia and recorded in Europe since 2008. In Italy, Ae. koreicus is widespread throughout the Northern part of the peninsula, highlighting its invasive potential and spread. However, no clear clues about the dispersal patterns of the species have been collected so far. Methodology/Principal findings Population genetic analyses were performed to assess the genetic structure of populations of Ae. koreicus and to make hypotheses about its dispersal patterns in Northern Italy. Ten microsatellite markers specific for Ae. koreicus were used to genotype 414 individuals from 13 populations in the pre-alpine area of Italy, and neighboring Slovenia. Basic and Bayesian population genetic analyses were performed to evaluate patterns of genetic variation, genetic structure, and demography of selected mosquito populations. While presenting a certain degree of structuring, the Italian and Slovenian populations of Ae. koreicus were poorly differentiated. Moreover, demographic analysis supports the expansion of a single population propagule of Ae. koreicus in Italy and Slovenia and provides evidence of the presence of overwintering populations in the studied area. Conclusions/Significance Our results highlight a common origin, and stable colonization of Northern Italy and Slovenia, as a probable consequence of the expansion of a unique population. This stresses out the importance of continuous monitoring of Ae. koreicus, to finally uncover the geographic origins and entrance pathways of invasive populations and to prevent or limit further introductions. Aedes koreicus Italy genetics Aedes koreicus Italija genetika true false false Angleški jezik Slovenski jezik Članek v reviji 2025-09-26 11:35:05 2025-09-26 11:35:07 2025-10-17 03:03:17 0000-00-00 00:00:00 2025 0 0 str. 1-21 iss. 3, [article no.] e0012945 Vol. 19 2025 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 2025-03-31 595.771.1(450) 1935-2735 10.1371/journal.pntd.0012945 234289667 RAZ_Soresinetti_Laura_2025.pdf RAZ_Soresinetti_Laura_2025.pdf 1 B6FF2AA52FE7762A4C788B3CA9870830 209397112532fa6a2b7b1f50a13652d824cefed044cf4044ec0dedc7c4b64856 5a576d18-9abc-11f0-8f0b-005056ac49c0 https://repozitorij.upr.si/Dokument.php?lang=slv&id=31690 https://journals.plos.org/plosntds/article?id=10.1371/journal.pntd.0012945 1 376df18f-9abc-11f0-8f0b-005056ac49c0 https://repozitorij.upr.si/Dokument.php?lang=slv&id=31689 Fakulteta za matematiko, naravoslovje in informacijske tehnologije 0 0 0