Istituto Zooprofilattico Sperimentale Delle Venezie, Legnaro, Padua, Italy.
Research and Innovation Centre, Fondazione Edmund Mach, San Michele All'Adige, TN, Italy.
Sci Rep. 2022 Sep 21;12(1):15751. doi: 10.1038/s41598-022-19734-z.
Aedes koreicus is an invasive mosquito species which has been introduced into several European countries. Compared to other invasive Aedes mosquitoes, little is known of its biology and ecology. To determine Ae. koreicus' vectorial capacity, it is essential to establish its feeding patterns and level of anthropophagy. We report on the blood-feeding patterns of Ae. koreicus, examining the blood meal origin of engorged females and evaluating the influence of different biotic and abiotic factors on feeding behavior. Mosquitoes were collected in 23 sites in northern Italy by manual aspiration and BG-sentinel traps; host availability was estimated by survey. The source of blood meals was identified using a nested PCR and by targeting and sequencing the cytochrome c oxidase subunit I gene. In total, 352 Ae. koreicus engorged females were collected between 2013 and 2020 and host blood meals were determined from 299 blood-fed mosquitoes (84.9%). Eleven host species were identified, with the highest prevalences being observed among roe deer (Capreolus capreolus) (N = 189, 63.2%) and humans (N = 46, 15.4%). Blood meals were mostly taken from roe deer in forested sites and from humans in urban areas, suggesting that this species can feed on different hosts according to local abundance. Two blood meals were identified from avian hosts and one from lizard. Ae. koreicus' mammalophilic feeding pattern suggests that it may be a potential vector of pathogens establishing transmission cycles among mammals, whereas its role as a bridge vector between mammals and birds could be negligible.
韩国伊蚊是一种已入侵到几个欧洲国家的入侵蚊种。与其他入侵的白纹伊蚊相比，人们对其生物学和生态学知之甚少。为了确定韩国伊蚊的媒介能力，必须确定其吸血模式和嗜人程度。我们报告了韩国伊蚊的吸血模式，检查了饱血雌蚊的血液来源，并评估了不同生物和非生物因素对其吸血行为的影响。在意大利北部的 23 个地点，通过手动抽吸和 BG-sentinel 陷阱收集了蚊子；通过调查估计了宿主的可用性。使用嵌套 PCR 并针对细胞色素 c 氧化酶亚基 I 基因进行靶向和测序来确定血液来源。共收集了 2013 年至 2020 年间的 352 只饱血的韩国伊蚊雌性，并从 299 只吸血的蚊子中确定了宿主血液来源（84.9%）。鉴定出 11 种宿主物种，其中最常见的是獐（Capreolus capreolus）（N=189，63.2%）和人类（N=46，15.4%）。在森林地区，蚊子主要从獐子中获取血液，而在城市地区则主要从人类中获取血液，这表明该物种可以根据当地的丰度从不同的宿主中获取血液。从鸟类宿主中鉴定出两餐，从蜥蜴中鉴定出一餐。韩国伊蚊的哺乳动物嗜血性吸血模式表明，它可能是一种潜在的病原体媒介，可以在哺乳动物中建立传播周期，而它作为哺乳动物和鸟类之间的桥梁媒介的作用可能可以忽略不计。
