全面评价了亚致死剂量吡虫啉和吡蚜酮对褐飞虱繁殖力和生存力的长期影响。毒力测定结果显示，吡虫啉和吡蚜酮对褐飞虱3龄若虫的LC50分别为42.41 mg/L和396.46 mg/L，吡虫啉毒力约是吡蚜酮毒力的9.35倍。通过建立褐飞虱在吡虫啉和吡蚜酮亚致死剂量（LC30）作用下的生命表，发现褐飞虱在两种药剂处理下生物适合度都有所下降，分别为对照试虫的83.8%和8.4%。吡虫啉处理试虫仅羽化率明显低于对照，而吡蚜酮处理试虫的羽化率、雌虫比例、雌成虫寿命和卵孵化率各参数都明显下降。亚致死剂量的吡蚜酮使褐飞虱日产卵节律和卵孵化高峰都有所推迟，这可能是吡蚜酮对褐飞虱产生取食抑制作用进而导致其生殖器官发育缓慢造成的。
Longterm influences of sublethal dose of imidacloprid and pymetrozine on reproduction and biological fitness of the brown planthopper(BPH) were evaluated. Bioassay results showed that the LC50 values for imidacloprid and pymetrozine were 42.41 mg/L and 396.46 mg/L, respectively, suggesting imidacloprid was approximately 9.35 times more toxic than pymetrozine. The effects of the sublethal dose (LC30) of imidacloprid and pymetrozine on the fitness of the brown planthopper were evaluated by constructing and comparing the life tables. Results revealed that the biological fitness of BPH exposed to imidacloprid and pymetrozine had reduced to only 83.8% and 8.4% of the control, respectively. In imidacloprid treatment, there was only an obvious decline in emergence rate of adult. However, the emergence rate of adult, female adult ratio, female adult duration and eggs hatching rate were conspicuously reduced under pymetrozine treatment. In addition, the egg laying and fecundity fastigium of BPH exposed to sublethal pymetrozine were postponed compared to the control, which is probably correlated with the delayed development of genitalia caused by pymetrozine’s feeding inhibition effects.
\[1\]王海荣, 吴进才, 杨帆, 等. 不同药剂亚致死剂量对褐飞虱不同种群生命表参数的影响. 生态学报, 2009, 29（9）： 47534760.
\[2\]王利华, 张月亮, 方继朝, 等. 毒死蜱对灰飞虱抗性和敏感种群的亚致死效应. 中国水稻科学, 2011, 25（5）：529534.
\[3\]庄永林, 沈晋良, 陈峥. 三唑磷对不同翅型稻褐飞虱繁殖力的影响. 南京农业大学学报, 1999, 22（3）：2124.
\[4\]Bao H B, Liu S H, Liu Z W, et al. Sublethal effects of four insecticides on the reproduction and wing formation of brown planthopper, Nilaparvata lugens. Pest Manag Sci, 2009, 65: 170174.
\[5\]Kerns D L and Stewart S D. Sublethal effects of insecticides on the intrinsic rate of increase of cotton aphid. Entomol Exp Appl， 2000, 94: 4149.
\[6\]Widiarta I N, Matsumura M, Suzuki Y, et al. Effects of sublethal doses of imidacloprid on the fecundity of green leafhoppers, Nephotettix spp. (Hemiptera: Cicadellidae) and their natural enemies. Appl Entomol Zool, 2001, 36: 501507.
\[7\]Gressel J. Low pesticide rates may hasten the evolution of resistance by increasing mutation frequencies. Pest Manag Sci, 2010, 67: 253257.
\[8\]Lashkari M R, Sahragard A, Ghadamyari M. Sublethal effects of imidacloprid and pymetrozine on population growth parameters of cabbage aphid, Brevicoryne brassicae on rapeseed, Brassica napus L. Authors Insect Sci, 2007, 14: 207212.
\[9\]Flückiger C R, Kristinsson H, Senn R, et al. CGA 215′944-a novel agent to control aphids and whiteflies//Brighton Crop Protection Conference-Pests and Diseases. Hampshire, UK: British Crop Protection Concil, 1992, 1:4350.
\[10\]Allemann D V, Robinson S W, Fluckiger C R. Pymetrozine (CGA 215,944) a novel new control for sucking pests in cotton//Proceedings of first World Cotton Research Conference, Brisbane,Australia, 1995: 519521.
\[11\]Harrewijn P, Kayser H. Pymetrozine, a fast acting and selective inhibitor of aphid feeding. Insitu studies with electronic monitoring of feeding behaviour. Pestic Sci, 1997, 49:130140.
\[12\]Bextine B R, Harshman D, Miller T A, et al. Impact of pymetrozine on glassywinged sharpshooter feeding behavior and rate of Xylella fastidiosa transmission. J Insect Sci, 2005, 4(34): 16.
\[13\]Elbert A, Becker B,Hartwig J, et al. Imidacloprid a new systemic insecticide. PflanzenschutzNachrichten Bayer, 1991, 44:113116.
\[14\]Elbert A,Overbeck H, Iwaya K, et al. Imidacloprid, a novel systemic nitro methylene analogue insecticide for crop protection//Proceedings of the Brighton Crop Protection Conference: Pests and Diseases. Brighton, UK, 1990: 2128.
\[15\]刘泽文, 韩召军, 张玲春, 等. 吡虫啉低剂量对褐飞虱种群增长的持续影响.植保技术与推广, 2002, 22(7)：2933.
\[16\]何月平, 陈利, 陈建明, 等. 吡蚜酮对水稻褐飞虱取食行为的影响.中国水稻科学, 2010, 24(6)：635640.
