Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padua, Viale dell'Università, 16-35020 Legnaro (PD), Italy and.
J Econ Entomol. 2021 Oct 13;114(5):2060-2068. doi: 10.1093/jee/toab150.
The number of introductions of alien insect has been increasing in the last decades, primarily transported in shipping containers. The attraction of light of different wavelengths (white, infrared, ultraviolet, and red) applied on sticky traps was tested for the development of new traps for hitchhiker insects. The addition of entomological glue and insecticide on the trap was also tested. Tests were conducted on Cadra cautella Walker (Lepidoptera: Pyralidae), Drosophila melanogaster Meigen (Diptera: Drosophilidae), Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), and Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae) and released inside a shipping container. In the first test, one light color at a time was tested setting eight traps in the container, one for each possible combination of the variables: light on or off, glue added or not, and insecticide sprayed or not. In the second, five traps were used, all of them coated with the entomological glue: one for each light color and one with light off as control. In all the single color tests (except for infrared), light-on traps captured more, except for T. castaneum that was not attracted to white. In the multi-color test, C. cautella showed no preference among white, ultraviolet, or red; Drosophila melanogaster preferred ultraviolet and white over red; and beetles had a much greater attraction to red. Lastly, the stronger entomological glue improved catches of beetles, whereas insecticides did not. In conclusion, results suggest a possible application of sticky light traps against hitchhiker insects and further studies should verify if the simultaneous use of different light colors can improve the trap performance and does not act as a repellent.
在过去几十年中，随着航运集装箱的运输，外来昆虫的引入数量不断增加。不同波长（白色、红外线、紫外线和红色）的光对粘性诱捕器的吸引力被测试，以开发新的搭便车昆虫诱捕器。还测试了在诱捕器上添加昆虫胶和杀虫剂。测试在 Cadra cautella Walker（鳞翅目：Pyralidae）、Drosophila melanogaster Meigen（双翅目：Drosophilidae）、Sitophilus zeamais Motschulsky（鞘翅目：Curculionidae）和 Tribolium castaneum（ Herbst）（鞘翅目：Tenebrionidae）上进行，并在一个航运集装箱内释放。在第一个测试中，一次只测试一种颜色，在容器内设置了 8 个诱捕器，每个变量（灯开或关、添加胶或不添加、喷洒杀虫剂或不喷洒）都有一个可能的组合。在第二个测试中，使用了 5 个诱捕器，全部涂上了昆虫胶：一种用于每种颜色的光，一种用于没有光的对照。在所有单一颜色测试中（除了红外线），开着灯的诱捕器捕获的昆虫更多，除了 T. castaneum 对白色没有吸引力。在多色测试中，C. cautella 对白色、紫外线或红色没有偏好；Drosophila melanogaster 更喜欢紫外线和白色而不是红色；而甲虫对红色的吸引力更大。最后，更强的昆虫胶提高了甲虫的捕获率，而杀虫剂则没有。总之，结果表明粘性光诱捕器可能用于防治搭便车昆虫，进一步的研究应该验证同时使用不同的光颜色是否可以提高诱捕器的性能，并且不会起到驱避作用。
