황색점착트랩에 부착된 비표적 곤충 차단망이 해충의 포획에 미치는 영향

Abstract

Colored sticky traps have been widely used to trap and monitor flying insects that response to specific wavelengths. However, colored sticky trap attracts all insects that response the color, thus resulting in invasion of a lot of non-target insects. Non-target insects occupy the attachment surface, interfering with the attractiveness of target insects, and increase the effort and time required for monitoring insect pests. This study was conducted to investigate the effects of non-target insect-blocking net (5 and 10 mm in lattice size) on the attraction of insect species, which covers the sticky surface of color traps physically to block non-target organisms. The possibility of field application for the insect-blocking net was tested by analyzing the species diversity index and frequency distribution of insect body length of attracted insects. As a result, species, individuals, and diversity index showed higher tendency as the net was not applied or grid of the net was larger. However, when the analysis target was limited to the taxonomic groups (i.e. Family) including insect pests, it was confirmed that this tendency was reduced. Therefore the influence on the blocking effect of large non-target insect was confirmed. In group of Thripidae, Aleyrodidae, Cicadellidae that generally include many pest species, the frequency distribution of insect body length did not show significant difference among traps with different non-target insect-blocking net. Consequently, the use of non-target insect-blocking net did not adversely affect the attraction of target insect pests, suggesting 5 mm or 10 mm-net can be selectively applied for insect pest monitoring.