Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta (IZSPLV), Turin, Italy.
Centro Studi BioNaturalistici S.r.l, Genoa, Italy.
Parasit Vectors. 2019 Jul 5;12(1):334. doi: 10.1186/s13071-019-3589-2.
Invasive mosquito species (IMS) of the genus Aedes are a cause of increasing concern in Europe owing to their ability to vector important human viral diseases. Entomological surveillance to early detect alien mosquito and flavivirus circulation in Liguria, northwest Italy, has been carried out since 2011.
The invasive species Aedes koreicus was first detected in Genoa in September 2015, when a male specimen was caught near the international airport; species identity was confirmed by genetic analysis. Over the next three years, 86 more adult specimens were trapped at sites throughout the city, accounting for 0.50% of all mosquitoes and 1.04% of Aedes sp. mosquitoes trapped in Genova in the four-year period 2015-2018. So far, no other monitored sites in Liguria have revealed the presence of this species. Ovitraps at two sites became positive for the species in July-August 2017. All female Ae. koreicus pools analysed were negative in biomolecular assays for Flavivirus.
Our findings of Ae. koreicus in Genoa constitute, to the best of our knowledge, the first report of the species in northwest Italy and in a Mediterranean port city. The species appears to be established; trapping and climatic data support survival of Ae. koreicus in the area through three consecutive winters. Monitoring of adult mosquitoes detected the species two years before its discovery with ovitraps; trapping for adult specimens appears to be a more effective tool for the early detection of IMS. The airport (located near the commercial port area) and the flower market are the most probable sites of introduction; however, the exact time and place of arrival of this IMS in Liguria remain unknown. Based on morphological and genetic data, a common origin for most of the Ae. koreicus populations established in Europe is suspected. So far, no control measures have been adopted in Genoa and the species will probably colonize an even wider area in the next few years.
由于携带重要的人类病毒疾病的能力，属埃及伊蚊的入侵蚊种（IMS）在欧洲引起了越来越多的关注。自 2011 年以来，意大利西北部利古里亚一直在进行昆虫学监测，以尽早发现外来蚊子和黄病毒的传播。
2015 年 9 月，在热那亚国际机场附近捕获了一只雄性标本，首次发现了入侵物种白纹伊蚊；通过遗传分析确认了物种身份。在接下来的三年中，在全市各个地点共捕获了 86 只成年标本，占 2015 年至 2018 年四年期间在热那亚捕获的所有蚊子和埃及伊蚊的 0.50％和 1.04％。到目前为止，利古里亚的其他监测地点尚未发现该物种的存在。2017 年 7 月至 8 月，两个地点的卵阱对该物种呈阳性。在生物分子检测中，所有雌性白纹伊蚊水池均对黄病毒呈阴性。
我们在热那亚发现的白纹伊蚊是该物种在意大利西北部和地中海港口城市的首次报道。该物种似乎已经建立；诱捕和气候数据支持该物种在该地区通过三个连续的冬季生存。对成年蚊子的监测在其发现前两年就检测到了该物种；诱捕成年标本似乎是及早发现 IMS 的更有效工具。机场（位于商业区附近）和花卉市场是最有可能的引入地点；但是，这种 IMS 到达利古里亚的确切时间和地点仍不清楚。根据形态和遗传数据，怀疑欧洲建立的大多数白纹伊蚊种群具有共同的起源。到目前为止，热那亚尚未采取任何控制措施，该物种可能会在未来几年内进一步蔓延。
