Kells Stephen A, Goblirsch Michael J
Department of Entomology, University of Minnesota, 219 Hodson Hall, 1980 Folwell Ave., St. Paul, MN 55108, USA.
Insects. 2011 Aug 29;2(3):412-22. doi: 10.3390/insects2030412.
Developing effective alternative approaches for disinfesting bed bugs from residential spaces requires a balance between obtaining complete insect mortality, while minimizing costs and energy consumption. One method of disinfestation is the application of lethal high temperatures directly to rooms and contents within a structure (termed whole-room heat treatments). However, temperature and time parameters for efficacy in whole-room heat treatments are unknown given the slower rate of temperature increase and the probable variability of end-point temperatures within a treated room. The objective of these experiments was to explore requirements to produce maximum mortality from heat exposure using conditions that are more characteristic of whole-room heat treatments. Bed bugs were exposed in an acute lethal temperature (LTemp) trial, or time trials at sub-acute lethal temperatures (LTime). The lethal temperature (LTemp99) for adults was 48.3 °C, while LTemp99 for eggs was 54.8 °C. Adult bed bugs exposed to 45 °C had a LTime99 of 94.8 min, while eggs survived 7 h at 45 °C and only 71.5 min at 48 °C. We discuss differences in exposure methodologies, potential reasons why bed bugs can withstand higher temperatures and future directions for research.
开发有效的替代方法以清除居住空间中的臭虫，需要在实现昆虫完全死亡的同时，尽量降低成本和能源消耗之间找到平衡。一种灭虫方法是直接对建筑物内的房间及其物品施加致死高温（称为整室热处理）。然而，鉴于温度升高速度较慢以及处理房间内终点温度可能存在的变异性，整室热处理中有效的温度和时间参数尚不清楚。这些实验的目的是利用更具整室热处理特征的条件，探索通过热暴露实现最大死亡率的要求。臭虫在急性致死温度（LTemp）试验中或在亚急性致死温度下的时间试验（LTime）中接受暴露。成虫的致死温度（LTemp99）为48.3℃，而卵的LTemp99为54.8℃。暴露于45℃的成年臭虫的LTime99为94.8分钟，而卵在45℃下存活7小时，在48℃下仅存活71.5分钟。我们讨论了暴露方法的差异、臭虫能够耐受更高温度的潜在原因以及未来的研究方向。
