School of Veterinary Science, Faculty of Science, The University of Queensland, Gatton, Queensland, Australia.
School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia.
Med Vet Entomol. 2023 Dec;37(4):826-833. doi: 10.1111/mve.12687. Epub 2023 Aug 25.
Aedes koreicus Edwards, 1917 (Hulecoetomyia koreica) is a mosquito (Diptera: Culicidae) from Northeast Asia with a rapidly expanding presence outside its original native range. Over the years, the species has been discovered in several new countries, either spreading after first introduction or remaining localised to limited areas. Notably, recent studies have demonstrated the ability of the species to transmit zoonotic parasites and viruses both in the field and in laboratory settings. Combined with its invasive potential, the possible role of Ae. koreicus in pathogen transmission highlights the public health risks resulting from its invasion. In this study, we used a recently established population from Italy to investigate aspects of biology that influence reproductive success in Ae. koreicus: autogeny, mating behaviour, mating disruption by the sympatric invasive species Aedes albopictus Skuse, 1894, and the presence of the endosymbiont Wolbachia pipientis Hertig, 1936. Our laboratory population did not exhibit autogenic behaviour and required a bloodmeal to complete its ovarian cycle. When we exposed Ae. koreicus females to males of Ae. albopictus, we observed repeated attempts at insemination and an aggressive, disruptive mating behaviour initiated by male Ae. albopictus. Despite this, no sperm was identified in Ae. koreicus spermathecae. Wolbachia, an endosymbiotic bacterium capable of influencing mosquito reproductive behaviour, was not detected in this Ae. koreicus population and, therefore, had no effect on Ae. koreicus reproduction.
朝鲜伊蚊（Aedes koreicus Edwards, 1917），又称库蚊（Hulecoetomyia koreica），是一种来自东北亚的蚊子（双翅目：蚊科），其分布范围正在迅速扩大，超出了其原生范围。多年来，该物种在几个新国家被发现，或是在首次引入后传播，或是局限于有限的地区。值得注意的是，最近的研究表明，该物种在野外和实验室环境中都具有传播人畜共患寄生虫和病毒的能力。加上其入侵性，朝鲜伊蚊在病原体传播中的可能作用突显了其入侵所带来的公共卫生风险。在本研究中，我们使用最近在意大利建立的种群来研究影响朝鲜伊蚊生殖成功的生物学特征：自体受精、交配行为、同种入侵物种白纹伊蚊（Aedes albopictus Skuse, 1894）的交配干扰以及共生菌沃尔巴克氏体（Wolbachia pipientis Hertig, 1936）的存在。我们的实验室种群没有表现出自体受精行为，需要吸血才能完成卵巢周期。当我们将朝鲜伊蚊雌蚊暴露于白纹伊蚊雄蚊时，我们观察到多次尝试授精和由白纹伊蚊雄蚊发起的攻击性、扰乱性交配行为。尽管如此，在朝鲜伊蚊的受精囊中并未发现精子。沃尔巴克氏体是一种能够影响蚊子生殖行为的共生细菌，但在该朝鲜伊蚊种群中未被检测到，因此对朝鲜伊蚊的繁殖没有影响。
