Lilja Tobias, Lindström Anders, Hernández-Triana Luis M, Di Luca Marco, Lwande Olivia Wesula
Department of Microbiology, Swedish Veterinary Agency, 751 89 Uppsala, Sweden.
Vector-Borne Diseases Research Group, Virology Department, Animal and Plant Health Agency (APHA), Addlestone KT15 3NB, UK.
Insects. 2024 Aug 26;15(9):639. doi: 10.3390/insects15090639.
The mosquito occurs in two ecotypes differing in their mating and overwintering behavior: pipiens mate in open environments and diapause, and molestus also mate in small spaces and is active throughout the year. carry endosymbionts of the Pip strain, but the frequency of infection differs between studied populations. infection affects the host reproductive success through cytoplasmic incompatibility. Pip is divided into five types, Pip I-V. The type of Pip carried varies among populations. In northern European locations different Pip types are found in the two ecotypes, whereas in southern locations, they often carry the same type, indicating differences in hybridization between ecotypes. In this study, specimens of both ecotypes were collected from Sweden and compared to specimens from Norway, England, Italy, and the Netherlands, as well as from Mali and Thailand. The abundance varied, but all specimens were infected by , while the tested specimens of other mosquito species were often uninfected. The Pip strains were determined through the sequence analysis of genes and , showing that ecotypes in Scandinavia carry different Pip strains. The observed differences in Pip strains indicate that hybridization is not frequent and may contribute to barriers against hybridization of the ecotypes in Sweden and Norway.
蚊子存在两种生态型，它们在交配和越冬行为上有所不同：尖音库蚊在开放环境中交配并滞育，而致倦库蚊也在小空间中交配且全年活跃。携带Pip品系的内共生菌，但不同研究种群的感染频率有所差异。感染通过细胞质不亲和性影响宿主的繁殖成功率。Pip分为五种类型，即Pip I-V。携带的Pip类型在不同种群间存在差异。在北欧地区，两种生态型中发现了不同的Pip类型，而在南方地区，它们通常携带相同类型，这表明生态型之间杂交存在差异。在本研究中，从瑞典采集了两种生态型的标本，并与来自挪威、英国、意大利和荷兰以及马里和泰国的标本进行比较。其丰度各不相同，但所有标本都感染了[具体细菌名称未给出]，而其他蚊种的测试标本通常未被感染。通过对[具体基因名称未给出]基因和[具体基因名称未给出]的序列分析确定了Pip品系，结果表明斯堪的纳维亚半岛的生态型携带不同的Pip品系。观察到的Pip品系差异表明杂交并不频繁，这可能是瑞典和挪威生态型杂交的障碍。
