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Assessing repellency, movement, and mortality of three species of stored product insects after exposure to deltamethrin-incorporated long-lasting polyethylene netting
Journal of Pest Science ( IF 4.8 ) Pub Date : 2021-01-18 , DOI: 10.1007/s10340-020-01326-3
D. S. Scheff , A. R. Gerken , W. R. Morrison , J. F. Campbell , F. H. Arthur , K. Y. Zhu

Long-lasting insecticide-treated netting (LLIN) has begun to be used in agricultural product protection. We investigated the effect of a deltamethrin-incorporated LLIN on three stored product insects, red flour beetle, Tribolium castaneum (Herbst), lesser grain borer, Rhyzopertha dominica (F.), and rice weevil, Sitophilus oryzae (L.). Long-distance repellency was assessed in a wind tunnel for adults of each species, but no repellency was observed. Insect movement and behavior was assessed by observing the movement of adult beetles on treated and untreated netting during a 5 min period for distance traveled, velocity, mobility, and time on each netting type. Among all netting combinations, T. castaneum spent the most time highly mobile, higher velocity, and traveled a greater distance. Sitophilus oryzae and R. dominica spent significantly more time immobile and lower velocity. Efficacy of LLIN was tested by exposing adults for 60 min, removing, and holding with or without food, and monitoring for mortality up to 7 d. All S. oryzae and R. dominica were either affected or dead at all post-exposure times. The number of affected and dead adult T. castaneum combined 7 d after exposure was 42% and 95%, with or without food, respectively, and 52% of affected adults were able to recover when food was present. Overall, LLIN had no repellency or negative effect on insect movement, which increases the probability of lethal exposures of adults from walking on the netting. LLIN can be adopted in existing integrated pest management (IPM) programs for food processing facilities to prevent stored product insect infestations.



中文翻译:

评估掺入溴氰菊酯的长效聚乙烯网罩后三种存储昆虫的驱虫性,运动性和死亡率

经长效杀虫剂处理的蚊帐(LLIN)已开始用于农产品保护中。我们调查了掺入溴氰菊酯的LLIN对三种储存产品昆虫,红粉甲虫,cast藜(Herbst),小grain,Rhyzopertha dominica(F.)和稻象鼻虫Sitophilus oryzae(L.)的影响。在风洞中评估了每种物种的成虫的长距离驱避性,但未观察到驱避性。通过观察5分钟内成虫在经过处理和未经处理的蚊帐上的运动来评估昆虫的移动和行为,以了解每种蚊帐类型的行进距离,速度,活动性和时间。在所有的净额组合中,锥栗花了最多的时间高度机动,较高的速度并走了更长的距离。米果Sitophilus and R. dominica花更多的时间固定并且降低速度。通过将成年人暴露60分钟,取出并保持在有或没有食物的情况下,监测LLIN的功效,并监测直至7天的死亡率。所有的米象R.蠹在所有后的曝光时间要么影响或死亡。受累和死亡的成人锥栗暴露后7 d的总和分别为42%和95%,有或没有食物,有食物的52%的受影响成年人能够康复。总体而言,LLIN对昆虫的活动没有驱避性或负面影响,从而增加了成虫在网上行走导致致命性接触的可能性。LLIN可以用于食品加工设施的现有病虫害综合治理(IPM)计划中,以防止存储产品中的虫害。

更新日期:2021-01-19
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