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稻飞虱卵期寄生蜂稻虱缨小蜂引诱剂的筛选与田间试验
Screening and field evaluation of synthetic plant volatiles as attractants for Anagrus nilaparvatae Pang et Wang
汪鹏,娄永根
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DOI:
作者单位:State Key Laboratory of Rice Biology, Institute of Insect Science, Zhejiang University, Hangzhou310058, China
中文关键词:褐飞虱,稻虱缨小蜂,虫害诱导挥发物,引诱剂
英文关键词:Nilaparvata lugens, Anagrus nilaparvatae, herbivoreinduced plant volatiles, attractant
中文摘要:

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。

英文摘要:Natural enemies of herbivores can effectively locate their hosts or prey by perceiving herbivoreinduced plant volatiles. In order to develop attractants for Anagrus nilaparvatae Pang et Wang, an egg parasitoid of rice planthoppers, we tested the attractiveness of synthetic rice volatiles induced by the rice brown planthopper (BPH) Nilaparvata lugens (Stl) to the parasitoid in both laboratory and field. In the laboratory, using a Ytube olfactometer, we found that five compounds(Z3hexenyl acetate, 1penten3ol, Z3hexenal, linalool and MeSA) attract the parasitoid. Moreover, A. nilapareatae was strongly attracted by three mixtures, one of MeSA plus Z3hexenal, one containing Z3hexenal, Z3hexenyl acetate and linalool, and one containing MeSA, Z3hexenal, Z3hexenyl acetate and linalool. Field experiments demonstrated that the parasitism of BPH eggs by the parasitoid was significantly increased on plants that received a septa containing one of the 3 chemicals (Z3hexenal, Z3hexenyl acetate, linalool) or the mixture containing MeSA, Z3hexenal, Z3hexenyl acetate and linalool. The findings are of significance for improving the biological control of N. lugens in the future.
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