Illinois Natural History Survey, Prairie Research Institute, University of Illinois at Urbana-Champaign, Champaign, IL, United States.
Front Public Health. 2022 May 3;10:872812. doi: 10.3389/fpubh.2022.872812. eCollection 2022.
The interplay among invasive alien vectors and the species assemblage of native potential vectors in areas of range expansion may affect the dynamics of pathogen transmission. In this study we investigate how , an invasive mosquito of considerable public health concern fits within mosquito communities at the edge of its range of distribution. This was addressed using a 2-year field survey of mosquitoes in south-eastern Illinois. We found that was more broadly distributed in this region than previously realized, with new occurrence records for nine counties. Abundance of this species varied strongly and peaked in locations of low-intermediate overall mosquito species richness. This differed from overall mosquito abundance, as well as abundance of another important vector, , for which the abundance-richness relationships were best described with power functions. Metacommunity analyses revealed that mosquito communities showed a non-random distribution with a Clementsian gradient, which suggests a pattern whereby distinct species assemblages are associated with specific habitats or environmental conditions. Land use was a significant underlying factor shaping mosquito community structure and species assemblages. Multivariate analyses showed that while and complex mosquitoes were associated with high and low proportions of wetlands in the environment, respectively, was most strongly associated with urban settlements. This work sheds light on landscape-level processes, such as niche differentiation driven by urban and agricultural development, structuring mosquito communities. We suggest that mosquito community assessments across habitats be incorporated as part of a One Health vector surveillance approach to aid in the goal of prediction and prevention of new and (re-)emerging vector-borne diseases.
入侵外来媒介物与原生潜在媒介物在分布范围扩张地区的物种组合相互作用可能会影响病原体传播的动态。在这项研究中，我们调查了作为一个具有相当公共卫生关注的入侵蚊子，如何在其分布范围的边缘融入蚊子群落。这是通过对伊利诺伊州东南部的蚊子进行为期两年的实地调查来解决的。我们发现，在该地区的蚊子分布范围比以前认识到的更为广泛，有九个县出现了新的发生记录。该物种的丰度变化很大，在中低整体蚊子物种丰富度的地方达到峰值。这与整体蚊子丰度以及另一种重要媒介物的丰度不同，后者的丰度-丰富度关系最好用幂函数来描述。元群落分析表明，蚊子群落呈非随机分布，具有克莱门茨梯度，这表明不同的物种组合与特定的栖息地或环境条件有关。土地利用是塑造蚊子群落结构和物种组合的重要潜在因素。多元分析表明，虽然 和 复杂的蚊子分别与环境中湿地比例高和低相关， 与城市定居点的相关性最强。这项工作揭示了景观水平的过程，如由城市和农业发展驱动的生态位分化，这些过程构建了蚊子群落。我们建议在不同栖息地进行蚊子群落评估，作为一种综合卫生媒介物监测方法的一部分，以帮助预测和预防新出现的和（重新）出现的媒介传播疾病。
