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亚洲小车蝗对其雌成虫粪便挥发物的电生理反应

DOI: 10.7668/hbnxb.2011.06.024, PP. 124-128

Keywords: 亚洲小车蝗,雌成虫粪便,挥发物,电生理反应

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Abstract:

亚洲小车蝗(OedaleusasiaticusB.Bienko)是我国北方草原和农牧交错地带最重要的优势种害虫之一,尤其近些年来亚洲小车蝗在各地起飞严重,作为前锋聚集迁移。试验采用EAG技术研究了亚洲小车蝗成虫对其雌成虫粪便挥发物的电生理反应。结果表明:雌成虫粪便挥发物单组分(1-羟基丙酮、2-甲基-2-丙烯醛、2,3-丁二酮、3-甲基丁醛及2-甲基丁醛)及其混合物对亚洲小车蝗成虫均具有电生理活性。在低浓度(≤1/1000原液浓度)时雄成虫对1-羟基丙酮、2,3-丁二酮的反应较雌成虫更为强烈,而且在低浓度时雄成虫对1-羟基丙酮的EAG反应值最高;随着浓度的增加,雌虫的反应增强,在1/100原液浓度时雌成虫对2-甲基-2-丙烯醛的反应明显强于雄成虫。雄成虫对全组分混合物的反应也是在低浓度时表现最为强烈。

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