| 氯虫苯甲酰胺对白背飞虱实验种群的亚致死效应 |
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| 引用本文： | 杨洪,王召,金道超.氯虫苯甲酰胺对白背飞虱实验种群的亚致死效应[J].昆虫学报,2012,55(10):1161-1167. |
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| 作者姓名： | 杨洪 王召 金道超 |
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| 作者单位： | 贵州大学昆虫研究所,贵州山地农业病虫害重点实验室,贵阳 550025 |
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| 基金项目： | 贵州省农业科技攻关项目(项目编号：黔科合NY字[2010]3064)贵州省教育厅自然科学研究项目(项目编号：黔教2010011) |
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| 摘 要： | 为正确评估防治水稻鳞翅目害虫的新型杀虫剂氯虫苯甲酰胺对非靶标害虫白背飞虱Sogatella furcifera (Horváth)的影响， 本文采取稻茎浸渍法测定了氯虫苯甲酰胺对白背飞虱的毒力， 利用生命表技术研究了氯虫苯甲酰胺对白背飞虱的亚致死效应。结果表明： 氯虫苯甲酰胺对白背飞虱3龄若虫和成虫的LC50分别为19.26 mg/L和19.69 mg/L。以氯虫苯甲酰胺LC10和LC25剂量分别处理白背飞虱3龄若虫后， F0和F1代雌虫产卵量及其寿命均降低， 尤其LC25处理与对照间存在显著差异（P<0.05）， F0和F1代雌虫寿命分别缩短了1.80 d和2.62 d， F0和F1代雌虫产卵量分别减少了52.94粒和78.45粒。药剂处理对F1代各虫态发育历期也有一定影响。根据不同剂量处理后白背飞虱各发育阶段的存活率和成虫的繁殖力， 组建了生殖力生命表， 发现LC10和LC25剂量处理的种群内禀增长率rm分别降低了11.25%和34.41%， 净增殖率R0分别降低了36.56%和74.57%， 而世代平均历期T和种群加倍时间t均延长。结果说明， 氯虫苯甲酰胺LC10和LC25剂量可抑制白背飞虱种群的增长； 大田中使用氯虫苯甲酰胺防治鳞翅目害虫时， 可抑制同时发生的非靶标害虫白背飞虱田间种群增长。
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| 关 键 词： | 白背飞虱 氯虫苯甲酰胺 毒力 亚致死效应 生命表 |
Sublethal effects of chlorantraniliprole on the experimental populations of the white-backed planthopper, Sogatella furcifera (Hemiptera: Delphacidae) |
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| YANG Hong,WANG Zhao,JIN Dao-Chao.Sublethal effects of chlorantraniliprole on the experimental populations of the white-backed planthopper, Sogatella furcifera (Hemiptera: Delphacidae)[J].Acta Entomologica Sinica,2012,55(10):1161-1167. |
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| Authors: | YANG Hong WANG Zhao JIN Dao-Chao |
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| Abstract: | In order to evaluate the effect of chlorantraniliprole, an insecticide in control of Lepidoptera larvae on rice plant, on the white-backed planthopper, Sogatella furcifera (Horváth), the rice-stem dipping method was used to test the toxicity of chlorantraniliprole to the experimental populations of S. furcifera, and the sublethal effects of chlorantraniliprole on S. furcifera were studied with life table. The results showed that the LC50 doses of chlorantraniliprole to the 3th instar nymphs and adults of S. furcifera were 19.26 mg/L and 19.69 mg/L, respectively. After the 3th instar nymphs of S. furcifera were treated with the LC10 and LC25 of chlorantraniliprole, respectively, both the life span and the fecundity per female decreased in F0 and F1, and significant difference existed between the treatment of LC25 and the control in F0 and F1 (P<0.05). Compared to the control, the treatment of LC25 caused a decrease of 52.94 and 78.45 eggs laid per female in F0 and F1, respectively, and 1.80 d and 2.62 d less in the life span of female in F0 and F1, respectively. The developmental duration of different stages were affected after S. furcifera nymphs were treated with the LC25 and LC10 of chlorantraniliprole. According to the survival rate and fecundity of S. furcifera treated by different doses of chlorantraniliprole, the life table of fecundity was constructed. We found that for LC10 and LC25 treatments the intrinsic rate of increase (rm) decreased by 11.25% and 34.41%, respectively, and the net reproductive rate (R0) decreased by 36.56% and 74.57%, respectively, while the mean generation time (T) and population doubling time (t) were delayed. The results suggest that LC25 and LC10 of chlorantraniliprole can decrease the population growth of S. furcifera, and this insecticide will restrain the natural population growth of S. furcifera when it is used in the field in controlling the Lepidoptera larvae on rice plants. |
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| Keywords: | Sogatella furcifera" target="_blank">Sogatella furcifera')" href="#">Sogatella furcifera chlorantraniliprole toxicity sublethal effects life table |
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