USDA-ARS-CMAVE, 1600/1700 S.W. 23rd Dr., Gainesville, FL 32608, USA.
J Econ Entomol. 2011 Aug;104(4):1430-5. doi: 10.1603/ec10458.
The red flour beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae), is a major coleopteran pest in flour mills and storage facilities. An aggregation pheromone has been identified for this pest; however, the pheromone is of limited value for population monitoring. To develop more efficient methods to monitor this pest, experiments were conducted to determine whether light functioned as an attractant for the red flour beetle. Light-emitting diodes (LEDs) of various wavelengths were examined as light sources because they produce bright, narrow light spectra. A comparison of responses to light spectra across the visible and UV regions of the electromagnetic spectrum indicated that the beetle was most attracted to near UV LED at a 390 nm dominant wavelength. The use of LEDs in competitive laboratory experiments resulted in a 20% capture of released beetles, compared with a 1% capture with the aggregation pheromone alone. Even more beetles were captured with a combination of LEDs and commercially available chemical lures in traps. LEDs can easily be added onto existing trap designs or new traps can be designed to take full advantage of positive phototaxis.
红面粉甲虫，Tribolium castaneum（ Herbst）（鞘翅目：拟步甲科），是面粉厂和储存设施中主要的鞘翅目害虫。已经鉴定出这种害虫的聚集信息素；然而，这种信息素对于种群监测的价值有限。为了开发更有效的方法来监测这种害虫，进行了实验以确定光是否对红面粉甲虫具有吸引力。各种波长的发光二极管（LED）被用作光源，因为它们产生明亮、窄的光光谱。对电磁光谱可见和 UV 区域的光光谱响应的比较表明，甲虫最被近 UV LED 以 390nm 的主波长吸引。与单独使用聚集信息素相比，在竞争实验室实验中使用 LED 导致释放的甲虫的捕获率提高了 20%，而捕获率提高了 1%。在带有 LED 和市售化学诱饵的诱捕器中，甚至可以捕获更多的甲虫。LED 可以轻松地添加到现有的诱捕器设计中，也可以设计新的诱捕器以充分利用正趋光性。
