1Department of Biological Sciences, Galvin Life Science Center, University of Notre Dame, Notre Dame, Indiana.
2Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana.
Am J Trop Med Hyg. 2020 Dec;103(6):2450-2452. doi: 10.4269/ajtmh.20-0885. Epub 2020 Oct 13.
mosquito is a major vector of arboviral disease. Here, we report that the biting behavior of normally daytime active anthropophilic . mosquitoes on human hosts is abnormally increased at night following exposure to artificial light at night (ALAN). Biting was examined using a human host assay where caged mosquitoes were exposed to a human arm and blood-feeding measured. Mosquitoes were tested during the daytime, nighttime, or challenged with ALAN. As predicted from the diel/circadian biting cycle, maximal biting occurred during daytime and lowest level occurred at night. Biting in the ALAN group was increased compared with time-matched nighttime controls. These data reveal that exposure to ALAN increases nocturnal blood-feeding behavior. This finding highlights the concern that globally increasing levels of light pollution could be impacting arboviral disease transmission, such as dengue fever and Zika, and has implications for application of countermeasures for mosquito vector control.
蚊子是虫媒病毒病的主要载体。在这里，我们报告说，在夜间接触人造光（ALAN）后，通常在白天活动的嗜人血. 蚊子对人类宿主的叮咬行为异常增加。通过使用人体宿主测定法来检查叮咬行为，将笼中的蚊子暴露于人体手臂并测量血液摄入情况。在白天、夜间或接受人造光（ALAN）刺激时对蚊子进行测试。根据昼夜/昼夜节律的叮咬周期预测，最大的叮咬发生在白天，而夜间最低。与时间匹配的夜间对照相比，ALAN 组的叮咬增加。这些数据表明，接触人造光会增加夜间吸血行为。这一发现表明，全球不断增加的光污染水平可能正在影响虫媒病毒病的传播，例如登革热和寨卡病毒，这对蚊媒控制的对策应用具有影响。
