襟状の折り返し構造がある障壁の設置によるトビイロヒョウタンゾウムシ成虫の移動低減効果

抄録

We investigated the effect of a barrier with lapel-shaped folded structure on reducing dispersion of Scepticus griseus (Coleoptera: Curculionidae) adults, in order to establish a method for reducing their invasion to crop fields. In double-framed field plots, we installed an inner frame with or without a lapel-shaped folded structure facing outward at 40°to the vertical surface. The weevil adults were released between the inner frame and the outer frame then investigated after a certain period of time. Invasion into the inner frame with the lapel-shaped folded structure was significantly reduced compared to the inner frame without it, indicating that the barrier with a lapel-shaped folded structure is promising as a physical control method to reduce migration of this weevil.