J Am Mosq Control Assoc. 2021 Mar 1;37(1):20-27. doi: 10.2987/20-6959.
The effects of 3 plant species (Cornus florida [dogwood], rhododendron X 'Chionoides' [rhododendron], and Ilex opaca [American holly]), 4 insecticide treatments (Demand® CS [lambda-cyhalothrin] at 6.25 ml[AI]/liter; Talstar® Professional [bifenthrin] at 7.81 ml[AI]/liter, and Suspend® Polyzone® [deltamethrin] at 11.72 ml[AI]/liter, and water), and 2 physiological states (blood-fed and unfed) were evaluated for knockdown (1 h) and mortality (24 h) against female Aedes albopictus over an 8-wk sampling period. Analyses determined that there was a significant interaction between the tested plant species and the insecticides evaluated. Significant differences were likewise observed between the insecticide treatments for unfed Ae. albopictus females, with Demand CS demonstrating the highest knockdown and mortality rates (from >90% to >10% at wk 8 and >95% to ∼50% at wk 8, respectively), followed by Talstar Professional (from >75% to <10% at wk 2 and >90% to <10% at wk 2, respectively) and Suspend Polyzone (from >20% to <10% at wk 8 and >25% to >50% at wk 8, respectively). All treatments were no longer significant for knockdown or mortality at the end of the 8-wk timeframe. Significant differences were also observed between insecticide treatments for blood-fed Ae. albopictus females; Demand CS showed high knockdown and mortality rates (from 100% to ∼50% at wk 8 and 100% to >60% at wk 8, respectively), Suspend Polyzone rates were similar to Demand CS (from >80% to ∼50% at wk 8 and ∼90% to >65% at wk 8, respectively), and both were followed by Talstar Professional (from 100% to <10% at wk 4 and 100% to <20% at wk 4, respectively). All tested pyrethroid sprays showed a significant increase in effectiveness against recently blood-fed Ae. albopictus females, as compared to the unfed females. These results suggest that Demand CS can be used as an effective barrier spray against Ae. albopictus adults due to the limited impact of target foliage, its long-term efficacy under environmental conditions, and its continued effectiveness regardless of the blood meal status of the target mosquito.
在 8 周的采样期内，评估了 3 种植物物种（Cornus florida [山茱萸]、Rhododendron X 'Chionoides' [杜鹃]和 Ilex opaca [美洲冬青]）、4 种杀虫剂处理（Demand® CS [lambda-氯氰菊酯] 6.25 ml[AI]/升；Talstar® Professional [溴氰菊酯] 7.81 ml[AI]/升，和 Suspend® Polyzone® [溴氰菊酯] 11.72 ml[AI]/升，以及水）和 2 种生理状态（吸血和未吸血）对雌性白纹伊蚊的击倒（1 小时）和死亡率（24 小时）的影响。分析表明，测试的植物物种和评估的杀虫剂之间存在显著的相互作用。同样观察到未吸血的白纹伊蚊雌蚊之间的杀虫剂处理之间存在显著差异，Demand CS 表现出最高的击倒和死亡率（第 8 周时 >90%至 >10%，第 8 周时 >95%至约 50%），其次是 Talstar Professional（第 2 周时 >75%至 <10%，第 2 周时 >90%至 <10%）和 Suspend Polyzone（第 8 周时 >20%至 <10%，第 8 周时 >25%至 >50%）。在 8 周的时间内，所有处理对击倒或死亡率均不再显著。吸血的白纹伊蚊雌蚊之间的杀虫剂处理也存在显著差异；Demand CS 表现出高击倒和死亡率（第 8 周时为 100%至 ∼50%，第 8 周时为 100%至 >60%），Suspend Polyzone 率与 Demand CS 相似（第 8 周时 >80%至 ∼50%，第 8 周时 ∼90%至 >65%），其次是 Talstar Professional（第 4 周时 100%至 <10%，第 4 周时 100%至 <20%）。与未吸血的白纹伊蚊雌蚊相比，所有测试的拟除虫菊酯喷雾剂对最近吸血的白纹伊蚊雌蚊的效果均显著提高。这些结果表明，Demand CS 可作为一种有效的屏障喷雾，用于防治白纹伊蚊成虫，因为其对靶标叶片的影响有限、在环境条件下的长期效果以及其持续有效性，无论目标蚊子的血食状态如何。
