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. 2021 Jun 1;37(2):61-67. doi: 10.2987/21-6996.1.
Gravid traps that collect eggs or adult mosquitoes use color, size, or volume as well as water or plant infusions as attractants. Biorational larvicides have been used to prevent these devices from producing adult mosquitoes within the traps. Results from field assays on the use of several biorational larvicides for various mosquito species have provided mixed results in terms of increased, neutral, or reduced attraction. We investigated the use of Bacillus thuringiensis var. israelensis, spinosad, and novaluron in field assays in Puerto Rico to evaluate the behavioral response of Aedes aegypti and Culex spp. to autocidal gravid ovitraps (AGO traps). The purpose of the study was to increase the safety of these traps by preventing accidental release of adult mosquitoes when traps are opened or damaged. We also investigated whether trap color (blue, green, terracotta) that may be more amenable for use by residents in their properties induced a similar attraction response to the original black trap color. We found that the use of biorational larvicides did not significantly change the behavioral attraction of these mosquito species to AGO traps. For Ae. aegypti, green traps yielded the lowest captures while black, terracotta, and blue produced similar higher yields. Culex spp. in black traps showed significantly higher captures compared with other colors. These results suggest that black, terracotta, or blue AGO traps can be used for the surveillance and control of Ae. aegypti.
收集卵或成蚊的诱蚊产卵器会利用颜色、大小或体积以及水或植物浸液作为引诱物。生物合理的幼虫剂已被用于防止这些装置在诱蚊产卵器中产生成蚊。针对几种生物合理的幼虫剂对不同蚊种的野外试验结果表明，其对诱蚊产卵器的吸引力有增加、中性或减少的不同效果。我们在波多黎各进行了田间试验，研究了苏云金芽孢杆菌以色列变种、多杀菌素和除虫脲在野外对埃及伊蚊和库蚊的行为反应，以评估其对自动杀蚊诱蚊产卵器（AGO 诱蚊产卵器）的影响。该研究的目的是通过防止诱蚊产卵器在打开或损坏时意外释放成蚊，来提高这些诱蚊产卵器的安全性。我们还研究了诱蚊产卵器的颜色（蓝色、绿色、赤陶色）是否更适合居民在其物业中使用，是否会引起与原始黑色诱蚊产卵器颜色相似的吸引反应。我们发现，生物合理的幼虫剂的使用并没有显著改变这些蚊种对 AGO 诱蚊产卵器的行为吸引力。对于埃及伊蚊，绿色诱蚊产卵器的捕获量最低，而黑色、赤陶色和蓝色诱蚊产卵器的捕获量则相似且较高。与其他颜色相比，黑色诱蚊产卵器中的库蚊捕获量明显更高。这些结果表明，黑色、赤陶色或蓝色的 AGO 诱蚊产卵器可用于监测和控制埃及伊蚊。
