Fujiwara-Tsujii Nao, Yasui Hiroe
Chemical Ecology Group, Central Region Agricultural Research Center, NARO, Tsukuba, Ibaraki 305-8666, Japan.
Insects. 2021 Apr 26;12(5):383. doi: 10.3390/insects12050383.
The white-spotted longicorn beetle, , is one of the most destructive pests of horticultural crops and street trees. Effective controls are needed because the effect of marketed insecticides is limited. Entomopathogenic fungi offer a solution, and improving the rate of infection would be a breakthrough in this beetle's control. The combination of pathogenic fungi and the beetle's contact sex pheromone was suggested. The surface of the female body is covered with contact sex pheromone, which elicit male mating behavior. To develop a method for the practical control of this beetle, we evaluated the arrestant activity of female extract containing contact pheromone coated on a black glass model. Males presented with a coated model held on for 5 h (mean) during an 8-h experiment. In contrast, males presented with a control model held on for <0.3 h. Males that held onto coated models attached to fabric impregnated with conidia of the fungus picked up much conidia, which they then passed on to females during mating.
星天牛是园艺作物和行道树中最具破坏性的害虫之一。由于市售杀虫剂效果有限，因此需要有效的防治方法。昆虫病原真菌提供了一种解决方案，提高感染率将是控制这种甲虫的一个突破。有人提出将病原真菌与甲虫的接触性信息素结合起来。雌虫体表覆盖着接触性信息素，能引发雄虫的交配行为。为了开发一种实际控制这种甲虫的方法，我们评估了涂覆在黑色玻璃模型上的含有接触性信息素的雌虫提取物的诱捕活性。在8小时的实验中，接触涂覆模型的雄虫平均停留了5小时。相比之下，接触对照模型的雄虫停留时间不到0.3小时。附着在浸有真菌分生孢子的织物上的涂覆模型上停留的雄虫沾上了大量分生孢子，然后在交配时将其传给雌虫。
