Kells Stephen A, Hymel Sabrina N
Department of Entomology, University of Minnesota, St Paul, MN, USA.
Pest Manag Sci. 2017 Jan;73(1):113-117. doi: 10.1002/ps.4294. Epub 2016 May 25.
Residual insecticides interrupt the dispersal of bed bugs (Cimex lectularius, L.), but one of the issues encountered with residual applications is understanding the uptake of active residues by the insect. This study determined permethrin uptake by bed bugs walking on the ActiveGuard Mattress Liner product, via a combination of video recording in arenas and gas chromatography analyses.
The best model for estimating permethrin uptake utilized a covariance model (r = 0.469) with two factors: time of exposure (F 2.44, P < 0.001) and distance traveled (F = 0.30, P = 0.0460). Bed bug permethrin uptake was 15.1 (95% CI: 10.3-22.1) ng insect within 1 min exposure, 21.0 (15.0, 31.0) ng insect within 10 min and ≈ 42 (29.8, 60.6) ng insect within ≥50 min exposure. Correcting for percentage recovery, these values would be increased by a factor of 1.21.
This permethrin-treated fabric provides a surface from which bed bugs begin rapidly to absorb permethrin on contact and within the first 1 cm of travel. Variability in uptake was likely a result of grooming and thigmotaxis, and future work should use quantitative methods to study behaviors and formulations that increase exposure to the toxicant. © 2016 Society of Chemical Industry.
残留杀虫剂会干扰臭虫（温带臭虫）的扩散，但残留喷洒面临的问题之一是了解昆虫对活性成分的摄取情况。本研究通过在试验场地进行视频记录和气相色谱分析相结合的方法，测定了在ActiveGuard床垫衬里产品上爬行的臭虫对氯菊酯的摄取量。
估算氯菊酯摄取量的最佳模型是一个协方差模型（r = 0.469），包含两个因素：暴露时间（F = 2.44，P < 0.001）和移动距离（F = 0.30，P = 0.0460）。臭虫在暴露1分钟内摄取的氯菊酯量为15.1（95%置信区间：10.3 - 22.1）纳克/只，10分钟内为21.0（15.0，31.0）纳克/只，暴露≥50分钟时约为42（29.8，60.6）纳克/只。校正回收率后，这些数值将增加1.21倍。
这种经氯菊酯处理的织物提供了一个表面，臭虫在接触该表面并在最初移动的1厘米内就开始迅速吸收氯菊酯。摄取量的差异可能是梳理行为和趋触性的结果，未来的研究应采用定量方法来研究增加接触毒物的行为和配方。© 2016化学工业协会。
