J Am Mosq Control Assoc. 2021 Dec 1;37(4):242-249. doi: 10.2987/21-7038.
Aedes aegypti is the predominant vector of dengue, chikungunya, and Zika viruses. This mosquito is difficult to control with conventional methods due to its container-inhabiting behavior and resistance to insecticides. Autodissemination of pyriproxyfen (PPF), a potent larvicide, has shown promise as an additional tool to control Aedes species in small-scale field trials. However, few large-scale field evaluations have been conducted. We undertook a 6-month-long large-scale field study to compare the effectiveness and operational feasibility of using In2Care Mosquito Traps (In2Care Traps, commercially available Aedes traps with PPF and Beauveria bassiana) compared to an integrated vector management (IVM) strategy consisting of source reduction, larviciding, and adulticiding for controlling Ae. aegypti eggs, larvae, and adults. We found that while the difference between treatments was only statistically significant for eggs and larvae (P < 0.05 for eggs and larvae and P > 0.05 for adults), the use of In2Care Traps alone resulted in 60%, 57%, and 57% fewer eggs, larvae, and adults, respectively, collected from that site compared to the IVM site. However, In2Care Trap deployment and maintenance were more time consuming and labor intensive than the IVM strategy. Thus, using In2Care Traps alone as a control method for large areas (e.g., >20 ha) may be less practical for control programs with the capacity to conduct ground and aerial larviciding and adulticiding. Based on our study results, we conclude that In2Care Traps are effective at suppressing Ae. aegypti and have the most potential for use in areas without sophisticated control programs and within IVM programs to target hotspots with high population levels and/or risk of Aedes-borne pathogen transmission.
埃及伊蚊是登革热、基孔肯雅热和寨卡病毒的主要传播媒介。由于这种蚊子具有容器栖息行为和对杀虫剂的抗性，因此用传统方法很难控制。吡丙醚（PPF）是一种有效的杀幼虫剂，其自动传播已被证明是控制小型实地试验中埃及伊蚊的另一种工具。然而，很少有大规模的实地评估。我们进行了一项为期 6 个月的大规模实地研究，比较了使用 In2Care 诱蚊器（In2Care 诱蚊器，市售含有吡丙醚和白僵菌的埃及伊蚊诱蚊器）与综合病媒管理（IVM）策略（包括减少源头、幼虫和成虫处理）控制埃及伊蚊卵、幼虫和成虫的效果和操作可行性。我们发现，虽然处理之间的差异仅在卵和幼虫方面具有统计学意义（卵和幼虫 P < 0.05，成虫 P > 0.05），但与 IVM 地点相比，单独使用 In2Care 诱蚊器导致从该地点收集的卵、幼虫和成虫分别减少了 60%、57%和 57%。然而，In2Care 诱蚊器的部署和维护比 IVM 策略更耗时和劳力密集。因此，对于具有进行地面和空中幼虫和成虫处理能力的控制计划而言，单独使用 In2Care 诱蚊器作为大面积（例如 >20 公顷）的控制方法可能不太实际。基于我们的研究结果，我们得出结论，In2Care 诱蚊器可有效抑制埃及伊蚊，并且在没有复杂控制计划的地区以及在 IVM 计划中针对高人口水平和/或携带登革热媒介传播风险的热点地区，具有最大的应用潜力。
