松小蠹成虫对其聚集信息化合物的触角电位反应

The EAG reaction of Tomicus piniperda Adults to Their Aggregation Pheromones

采用昆虫触角电位 (EAG)记录方法 ,测定了松小蠹 (Tomicuspiniperda)成虫对 18种松小蠹和云南松挥发性聚集信息化合物样品的EAG反应 ,分析了松小蠹雌、雄成虫触角对几种高活性化合物剂量的反应。EAG测定表明 ,松小蠹雌、雄成虫对虫体挥发性单组分聚集信息化合物MBXS和MBXT ,以及由虫体和云南松挥发物为主组成的复组分化合物α -PX +MBXT和α-PX + β-PX +MBXS有较强的触角电位反应 ,其剂量反应曲线呈现“S”型 ,并且反应阈值较低 ,其中主要成分为α -PX和MBXT的复组分化合物引起松小蠹成虫触角的EAG反应最大。

By taking the method of EAG recording, the EAG reaction of Tomicus piniperda adults to 18 kinds of aggregation pheromones were detected, and then the reaction of antennae of male and female adults to doses of high active aggregation pheromones was analyzed.? EAG determination shows the male and female adults of Tomicus piniperda have a very strong reaction to both single component aggregation pheromones (MBXS and MBXT) and multiple component aggregation pheromones (α-PX+MBXT and β-PX+MBXS).? The dose reaction appears to be “S” shape and threshold value is relatively low.? The multiple component aggregation pheromone composed of α-PX and MBXT causes the strongest EAG reaction.? Thus, the compounds to be selected as aggregation pheromones of Tomicus piniperda have been defined preliminarily.?