Lehnert M P, Pereira R M, Koehler P G, Walker W, Lehnert M S
Department of Entomology, University of Florida, Gainesville, U.S.A.
Med Vet Entomol. 2011 Dec;25(4):460-4. doi: 10.1111/j.1365-2915.2011.00944.x. Epub 2011 Feb 20.
Successful management of the bed bug, Cimex lectularius L. (Hemiptera: Cimicidae), is difficult because of its pesticide resistance, which can allow a reduction in population, but not elimination. We evaluated the effect of heat and/or air circulation on the efficacy of dichlorvos resin strips in the control of bed bugs. Treatments were performed in unoccupied dormitory rooms and consisted of dichlorvos resin strips containing 18.6% active ingredient, the same strips + fan, and strips + fan + heat. The mortality of recently fed bed bugs and weight loss of the dichlorvos strips were evaluated over 7 days. Dichlorvos resin strips killed bed bugs and eggs in just over 7 days. The addition of a fan or a fan + heat decreased time to 100% mortality to 3 days and 36 h, respectively. Eggs located in treated rooms did not hatch. Resin strips in the strips + fan treatment and the strips + fan + heat treatment volatilized 10 and 70 times, respectively, faster than strips in the strips-only treatment. The addition of heat in treatments with dichlorvos resin strips enhances the overall efficacy of the volatile insecticide and reduces the time required to eliminate live bed bugs and eggs.
由于臭虫（温带臭虫，半翅目：臭虫科）具有抗药性，成功治理这种害虫十分困难，虽然抗药性可使臭虫数量减少，但无法将其根除。我们评估了加热和/或空气流通对敌敌畏树脂条控制臭虫效果的影响。实验在无人居住的宿舍房间进行，处理方式包括含18.6%活性成分的敌敌畏树脂条、同样的树脂条 + 风扇，以及树脂条 + 风扇 + 加热。在7天时间里评估刚进食过的臭虫的死亡率以及敌敌畏条带的重量损失。敌敌畏树脂条在略超过7天的时间里杀死了臭虫和虫卵。添加风扇或风扇 + 加热分别将达到100%死亡率的时间缩短至3天和36小时。处理过的房间里的虫卵没有孵化。在树脂条 + 风扇处理组和树脂条 + 风扇 + 加热处理组中，树脂条挥发速度分别比仅使用树脂条处理组快10倍和70倍。在使用敌敌畏树脂条的处理中添加加热可提高挥发性杀虫剂的整体效果，并减少根除活臭虫和虫卵所需的时间。
