草地贪夜蛾对氧化芳樟醇的趋性

Orientational response of Spodoptera frugiperda(J.E.Smith)to linalool oxide

利用植物挥发物作为增效剂增加昆虫性信息素的诱捕效果,提高生物防治效率已成为研究趋势。本研究利用触角电位仪以及Y形嗅觉仪研究草地贪夜蛾对3个浓度梯度氧化芳樟醇的电生理及行为反应。结果表明:草地贪夜蛾雌、雄蛾对各浓度氧化芳樟醇都具有较强的电生理反应,且雌蛾对1μg/μL的氧化芳樟醇电生理反应值最高,为(0.40±0.051)mV,显著高于雄蛾;行为研究结果则表明,草地贪夜蛾雌虫对1μg/μL的氧化芳樟醇具有明显的选择偏好性,而雄蛾则对浓度为10μg/μL的氧化芳樟醇表现出明显的排斥性。本研究为开发有效的植物源草地贪夜蛾引诱剂提供了基础。

It has become a trend to improve the efficiency of insect sex pheromone trapping by searching for related plant volatiles.In this study,we use the electroantennography(EAG)and Y-tube to study the orientational responses of Spodoptera frugiperda to linalool oxide.The result showed that both male and female moths had an electrophysiological response to linalool oxide.The female moth showed the highest electrophysiology response value(0.40±0.051)mV to 1μg/μL linalool oxide,which was significantly higher than that of male moth.The behavioral test showed the female moths had a significant orientation to 1μg/μL linalool oxide,while male moths had a significant repellency to 10μg/μL linalool oxide.This study provides a basis for the development of effective plant attractants of S.frugiperda.