作　　者： ; ; ; ; ; ;

机构地区： 扬州大学园艺与植物保护学院

出　　处： 《昆虫学报》 2008年第11期1103-1112,共10页

摘　　要： 为了解迁飞种群与居留种群后代发生再猖獗的生理生化差异,探讨再猖獗的机制,比较研究了在两个水稻品种(TN1和协优963)上施用杀虫剂后褐飞虱Nilaparvata lugens(Stal)迁飞虫和本地虫后代3龄、5龄若虫和成虫体内可溶性糖和粗脂肪含量以及迁飞成虫与其后代成虫体内游离氨基酸含量的变化。结果表明:施药以及未施药处理(对照)TN1水稻品种上的迁飞后代3龄、5龄若虫和成虫体内的可溶性糖含量均显著高于本地虫。与可溶性糖含量相比,施药以及对照TN1水稻品种上的迁飞后代3龄、5龄若虫和成虫体内的粗脂肪含量均显著低于本地虫。协优963上3龄、5龄若虫体内可溶性糖含量的变化趋势与TN1上相同。对照水稻上迁飞成虫的粗脂肪含量显著高于本地种群,迁飞与本地3龄、5龄若虫间粗脂肪含量没有显著差异。杀虫剂处理后的水稻上迁飞后代5龄若虫和成虫体内粗脂肪含量显著高于本地虫。方差分析结果也显示,可溶性糖和粗脂肪含量的变化在虫源和杀虫剂,虫源和杀虫剂浓度以及杀虫剂类型和浓度方面有显著交互作用。两种水稻品种上,迁飞当代成虫体内的游离氨基酸含量显著低于其后代成虫。在经3种杀虫剂处理后,TN1上施用三唑磷后成虫体内的氨基酸含量显著高于施用溴氰菊酯和吡虫啉的处理,而协优963上施用溴氰菊酯和吡虫啉显著高于施用三唑磷的处理。本研究结果对深入阐明农药诱导褐飞虱再猖獗的机制具有参考价值。 To understand the biochemical difference between immigrant and non-immigrant Nilaparvata lugens offspring populations, we compared the changes in soluble sugar and crude fat contents in the 3rd and 5th instar nymphs and adults of the offsprings from immigrant and non-immigrant N. lugens, and free amino acid content in immigrant adults and their offspring adults on two rice varieties （TN1 and Xieyou 963） under insecticide stress. The biochemical substances were associated with insect origin （immigrant or nonimmigrant）, developmental stage, and insecticide type and insecticide concentration. Soluble sugar contents in the 3rd and 5th instar nymphs and adults of the offsprings that developed from the plants treated with insecticides and control （untreated） plants of TN1 for immigrant N. lugens were significantly higher than those for non-immigrant N. lugens. In contrast to soluble sugar content, crude fat content in the 3rd and 5th instar nymphs and adults of the offsprings that developed from the plants treated with insecticides and control plants of TN1 for immigrant N. lugens was significantly lower than that for non-immigrant N. lugens. For Xieyou 963,soluble sugar content in the 3rd and 5th instar nymphs showed the same tendency adults developed from control plants for immigrants was significantly higher populations, and that in the 3rd and 5th instar nymphs did not show a significant and non-immigrant N. lugens. Crude fat content in the 5th instar nymphs and as TN1. Crude fat content in than that for non-immigrant difference between immigrant adults which developed from the rice plants treated with insecticides for immigrant populations was significantly higher than that for non- immigrant. ANOVA results also demonstrated that as for changes in soluble sugar and crude fat contents, there were significant interactions between insect origin and insecticide type, insect origin and insecticide concentration, and insecticide type and insecticide concentration. For the two rice varieties, free amino acid

关 键 词： 褐飞虱 迁飞种群 本地种群 粗脂肪 可溶性糖 氨基酸

领　　域： [生物学]