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植食性昆虫的天敌能够利用虫害诱导的挥发物进行有效的寄主或猎物定位。为了开发稻飞虱卵期天敌稻虱缨小蜂Anagrus nilaparvatae Pang et Wang的引诱剂,分别在室内和室外检测了多种褐飞虱诱导的水稻挥发物组分对褐飞虱卵期天敌稻虱缨小蜂的引诱作用。Y型嗅觉仪实验结果表明,5种单一化合物,Z-3-己烯乙酸酯,1-戊烯基-3-醇,Z-3-己烯醛,芳樟醇和水杨酸甲酯,以及3种混合物,水杨酸甲酯+Z-3-己烯醛,Z-3-己烯醛+Z-3-己烯乙酸酯+芳樟醇,水杨酸甲酯+Z-3-己烯醛+Z-3-己烯乙酸酯+芳樟醇,对稻虱缨小蜂具有明显引诱作用。田间试验表明,3种单一化合物,Z-3-己烯乙酸酯,Z-3-己烯醛和芳樟醇,以及一种混合物,水杨酸甲酯+Z-3-己烯醛+Z-3-己烯乙酸酯+芳樟醇,能明显提高稻虱缨小蜂对褐飞虱卵的寄生作用。这些结果对于改善褐飞虱治理具有重要的意义。
Natural enemies of herbivore insects can utilize pest-induced volatiles for efficient host or prey positioning. In order to develop an attractant of Anagrus nilaparvatae Pang et Wang, a natural enemy of the rice planthopper oviposition period, several rice brown planthopper-induced components of rice volatiles were tested indoors and outdoors respectively. Attract. Y-type olfactometer results show that five single compounds, Z-3-hexenylacetate, 1-pentenyl-3-ol, Z-3- hexenal, linalool and methyl salicylate, And three mixtures of methyl salicylate + Z-3-hexenal, Z-3-hexenal + Z-3-hexenylacetate + linalool, methyl salicylate + Z-3 -hexenal + Z-3-hexenylacetate + linalool has obvious attraction to the louse. Field trials showed that three single compounds, Z-3-hexenoacetate, Z-3-hexenal and linalool, and a mixture of methyl salicylate + Z-3- Z-3-hexenylacetate + linalool, can significantly enhance the parasitoid parasitism of the Nilaparvata lugens to the brown planthopper eggs. These results are of great significance for improving the management of BPH.