Entomology and Ecology Team, Dengue Branch, DVBD, Centers for Disease Control and Prevention, 1324 Calle Canada, San Juan, PR 00920.
J Am Mosq Control Assoc. 2022 Mar 1;38(1):19-23. doi: 10.2987/21-7046.
We monitored trap captures of Culex quinquefasciatus using an interrupted time-series study to determine if autocidal gravid ovitraps (AGO traps) were useful to control the population of this mosquito species in a community in southern Puerto Rico. Data for this report came from a previous study in which we used mass trapping to control Aedes aegypti, resulting in a significant 79% reduction in numbers of this species. The AGO traps used to monitor and control Ae. aegypti also captured numerous Cx. quinquefasciatus. Culex quinquefasciatus was monitored in surveillance AGO traps from October 2011 to February 2013, followed by a mosquito control intervention from February 2013 to June 2014. Optimal captures of this mosquito occurred on the 2nd wk after the traps were set or serviced, which happened every 8 wk. Changes in collection numbers of Cx. quinquefasciatus were positively correlated with rainfall and showed oscillations every 8 wk, as revealed by sample autocorrelation analyses. Culex quinquefasciatus was attracted to and captured by AGO traps, so mass trapping caused a significant but moderate reduction of the local population (31.2%) in comparison with previous results for Ae. aegypti, possibly resulting from female mosquitoes flying in from outside of the study area and decreased attraction to the traps past the 2nd wk of trap servicing. Because Ae. aegypti and Cx. quinquefasciatus are frequently established in urban areas, mass trapping to control the former has some impact on Cx. quinquefasciatus. Control of the latter could be improved by locating and treating its aquatic habitats within and around the community.
我们利用中断时间序列研究监测了致倦库蚊的诱蚊笼捕获情况，以确定自杀灭卵器（AGO 诱蚊器）是否有助于控制波多黎各南部一个社区中这种蚊种的种群。本报告的数据来自之前的一项研究，该研究使用大量诱捕来控制埃及伊蚊，导致该物种数量显著减少 79%。用于监测和控制埃及伊蚊的 AGO 诱蚊器也捕获了大量的致倦库蚊。从 2011 年 10 月到 2013 年 2 月，我们在监测 AGO 诱蚊器中监测致倦库蚊，然后从 2013 年 2 月到 2014 年 6 月进行蚊媒控制干预。这种蚊子的最佳捕获时间是在诱蚊器设置或维护后的第 2 周，每 8 周发生一次。收集到的致倦库蚊数量的变化与降雨量呈正相关，并通过样本自相关分析显示出每 8 周的波动。AGO 诱蚊器吸引并捕获致倦库蚊，因此大量诱捕导致当地种群数量显著减少（31.2%），与埃及伊蚊的先前结果相比，这可能是由于雌性蚊子从研究区域外飞来，并且对诱蚊器的吸引力在第 2 周的诱蚊器维护后降低。由于埃及伊蚊和致倦库蚊经常在城市地区建立，因此控制前者对致倦库蚊有一定的影响。通过定位和处理社区内及其周围的水生栖息地，可以改善对后者的控制。
