Center for Vector Biology and Zoonotic Diseases, Environmental Sciences, The Connecticut Agricultural Experiment Station, 123 Huntington Street, New Haven, CT, 06511, USA.
Sci Rep. 2020 Nov 6;10(1):19287. doi: 10.1038/s41598-020-76231-x.
Historical declines in multiple insect taxa have been documented across the globe in relation to landscape-level changes in land use and climate. However, declines have either not been universally observed in all regions or examined for all species. Because mosquitoes are insects of public health importance, we analyzed a longitudinal mosquito surveillance data set from Connecticut (CT), United States (U.S.) from 2001 to 2019 to identify changes in mosquito community composition over time. We first analyzed annual site-level collections and metrics of mosquito community composition with generalized linear/additive mixed effects models; we also examined annual species-level collections using the same tools. We then examined correlations between statewide collections and weather variables as well as site-level collections and land cover classifications. We found evidence that the average trap night collection of mosquitoes has increased by ~ 60% and statewide species richness has increased by ~ 10% since 2001. Total species richness was highest in the southern portion of CT, likely due to the northward range expansion of multiple species within the Aedes, Anopheles, Culex, and Psorophora genera. How the expansion of mosquito populations in the northeast U.S. will alter mosquito-borne pathogen transmission in the region will require further investigation.
历史记录表明，全球范围内与土地利用和气候变化相关的景观水平变化导致多种昆虫类群数量减少。然而，并非所有地区都普遍观察到减少，也并非所有物种都进行了检查。由于蚊子对公共卫生具有重要意义，我们分析了美国康涅狄格州（CT）从 2001 年到 2019 年的蚊子纵向监测数据集，以确定蚊子群落组成随时间的变化。我们首先使用广义线性/附加混合效应模型分析了年度现场水平收集和蚊子群落组成的度量标准；我们还使用相同的工具检查了年度物种水平收集。然后，我们检查了全州范围内的收集与天气变量以及现场水平收集与土地覆盖分类之间的相关性。我们发现，自 2001 年以来，蚊子的平均诱蚊灯夜间收集量增加了约 60%，全州范围内的物种丰富度增加了约 10%。CT 南部地区的总物种丰富度最高，这可能是由于 Aedes、Anopheles、Culex 和 Psorophora 属的多种物种向北扩展所致。美国东北部蚊子种群的扩张将如何改变该地区蚊子传播的病原体，这需要进一步调查。
