Fedorova M V, Shaĭkevich E V
Med Parazitol (Mosk). 2013 Jul-Sep(3):36-9.
Cx. pipiens is one of the major vectors of West Nile virus in the south of Russia and it is represented by the autogenic form, molestus, and the non-autogenic form, pipiens. The spatial distribution of its larvae and food preferences of females was investigated to assess the potential role of each form in the spread of the virus. The taxonomic status of the mosquitoes was determined from their capacity for autogenicity (543 specimens) and the type of mitochondrial DNA (348 specimens). The mosquitoes of the pipiens form were shown to develop in the open urban and rural reservoirs and the females were non-autogenic. Cx. pipiens form molestus was found only in the urban biotopes, mainly in the flooded basements and, in some years, also in the open reservoirs where it formed a mixed population with Cx. pipiens form pipiens. Both autogenic (85-95.2%) and non-autogenic specimens were identified among the females with the mitotype in form molestus. Genetic analysis of Cx. pipiens females collected under the Berezantsev bell and in the trap with a bird showed that both forms were attracted to man and the bird. The findings suggest that Cx. pipiens form pipiens can transmit West Nile virus to humans both in the town and in its suburb and Cx. pipiens form molestus can only in urban areas.
尖音库蚊是俄罗斯南部西尼罗河病毒的主要传播媒介之一，它有自生型（骚扰库蚊）和非自生型（尖音库蚊）两种类型。研究了其幼虫的空间分布和雌蚊的食物偏好，以评估每种类型在病毒传播中的潜在作用。根据自生能力（543个样本）和线粒体DNA类型（348个样本）确定了蚊子的分类地位。尖音库蚊类型的蚊子在城市和农村的露天水体中发育，雌蚊为非自生型。骚扰库蚊仅在城市生境中发现，主要在被水淹的地下室，在某些年份，也在露天水体中，与尖音库蚊形成混合种群。在骚扰库蚊类型的雌蚊中，鉴定出了自生型（85%-95.2%）和非自生型。对在别列赞采夫钟形捕蚊器和鸟类诱捕器中捕获的尖音库蚊雌蚊进行的基因分析表明，两种类型都被人和鸟类吸引。研究结果表明，尖音库蚊能在城镇及其郊区将西尼罗河病毒传播给人类，而骚扰库蚊只能在城市地区传播。
