Imidacloprid-induced transference effect on some elements in rice plants and the brown planthopper Nilaparvata lugens （Hemiptera： Delphacidae）

• Published in: 中国昆虫科学：英文版 Vol. 18; no. 3; pp. 289 - 297
• Main Author: Samer Azzam Fan Yang Jin-Cai Wu Jin Geng Guo-Qing Yang
• Format: Journal Article
• Language: English
• Published: 2011
• Subjects: 元素; 半翅目; 发展速度; 吡虫啉; 多元统计分析; 害虫抗性; 水稻褐飞虱; 诱导效应
• ISSN: 1672-9609; 1744-7917

The widespread use ofimidacloprid against insect pests has not only increased the rate of the development of target pest resistance but has also resulted in various negative effects on rice plants and Nilaparvata lugens resurgence. However, the effect of imidacloprid on elements in rice plants and the transference of these element changes between rice and N. lugens are currently poorly understood. The present study investigated changes ofCu, Fe, Mn, Zn, Ca, K, Mg and Na contents in rice plants following imidacloprid foliar sprays in the adult female ofN./ugens that develops from nymphs that feed on treated plants and honeydew produced by females. The results indicated that imidacloprid foliar spray significantly increased Fe and K contents in leaf sheaths. Generally, Fe, Mn, K and Na contents in leaf blades were noticeably decreased, but Ca contents in leaf blades for ! 0 and 30 mg/kg imidacloprid treatments were significantly increased. The contents of most elements except K and Mg in the adult females and honeydew were significantly elevated. Multivariate statistical analysis showed that Fe, Mn and Na in leaf blades and Fe and Mn in leaf sheaths could be proportionally transferred to N. lugens. The relationship between most elements in adult female bodies and in the honeydew showed a positive correlation coefficient. There were significant differences in the contents of some elements in rice plants and N. lugens from different regions.