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水稻挥发物在黑肩绿盲蝽捕食行为中的作用(英文)
引用本文:娄永根,程家安.水稻挥发物在黑肩绿盲蝽捕食行为中的作用(英文)[J].Entomologia Sinica,2001(3).
作者姓名:娄永根  程家安
作者单位:浙江大学应用昆虫学研究所 杭州310029 (娄永根),浙江大学应用昆虫学研究所 杭州310029(程家安)
基金项目:InternationalFoundationforScience(IFS) (No.C 2 75 0 -1 ),NationalNaturalScienceFounda tionofChina(No .3 963 0 2 0 0 ),andIRRIIPMNetwork
摘    要:在室内研究了水稻品种和氮肥水平对黑肩绿盲蝽对褐飞虱卵嗜好性的影响 ,及其与水稻挥发物的关系。双向选择试验表明 ,黑肩绿盲蝽对不同水稻品种上的褐飞虱卵有着不同的嗜好性 ,但对不同氮肥水平稻株上褐飞虱卵的嗜好性无明显差异。嗅觉试验表明 ,黑肩绿盲蝽对水稻健康苗挥发物的趋性明显地强于空白对照 ,对褐飞虱若虫为害苗挥发物的趋性强于健康苗 ,对褐飞虱雌成虫为害苗的趋性又强于若虫为害苗。不同品种的水稻挥发物对黑肩绿盲蝽的引诱作用存在明显差异 ,但不同氮肥水平的水稻挥发物间差异不显著。上述结果表明 ,水稻挥发物在黑肩绿盲蝽的捕食行为中起着重要作用。文中就如何改进水稻特性和栽培措施以增强天敌作用进行了讨论。

关 键 词:黑肩绿盲蝽  褐飞虱  水稻品种  氮肥水平  三营养层相互作用

ROLE OF RICE VOLATILES IN THE FORAGING BEHAVIOUR OF CYRTORHINUS LIVIDIPENNIS REUTER
Authors:LOU Yong-gen and CHENG Jia-an Institute of Applied Entomology  Zhejiang Univesity  Hangzhou  PRChina
Institution:LOU Yong-gen * and CHENG Jia-an Institute of Applied Entomology,Zhejiang Univesity,Hangzhou 310029,P.R.China
Abstract:Experiments were conducted in laboratory to study the impacts of rice genotypes and nitrogen levels on the preference of the egg predator, Cyrtorhinus lividipennis, for eggs of brown planthopper(BPH), Nilaparvata lugens(Stl), and their relation to the rice volatiles.In two-choice tests, the female predators showed different preference for BPH eggs on different rice genotypes, but not for BPH eggs on rice plants treated with different levels of nitrogen.The olfactory response test revealed that more predator oriented to the odour from healthy rice plants compared with the plain air (control);the predator preferred BPH nymph-damaged plants to healthy plants, and BPH female adult-damaged plants to BPH nymph-damaged plants.The comparative studies between rice genotypes and nitrogen levels indicated that there were obvious differences in attractiveness to the predator between rice genotypes, while there was no significant difference between rice plants treated with different levels of nitrogen. The results showed that rice volatiles played an important role in mediating the foraging behaviour of C. lividipennis. Implications for augmenting the effectiveness of natural enemies by adjusting rice attributes and cultural practices are discussed.
Keywords:Cyrtorhinus lividipennis Reuter  Nilaparvata lugens(Stl)  rice variety  nitrogen levels  tritrophic level interactions
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