氯虫苯甲酰胺对非靶标害虫褐飞虱实验种群的亚致死效应  

Sublethal effect of chlorantraniliprole on the experimental population of non-target insect Nilaparvata lugens(Stl)

作　　者：杨洪[1] 王召[1] 金道超[1] 

机构地区：[1]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

出　　处：《应用生态学报》2013年第2期549-555,共7页Chinese Journal of Applied Ecology

基　　金：贵州省农业科技攻关项目(黔科合NY字[2010]3064);贵州省教育厅自然科学研究项目(黔教2010011)资助

摘　　要：在稻田中,氯虫苯甲酰胺是以鳞翅目幼虫为主要防治对象的新型杀虫剂,而褐飞虱是该药剂的重要非靶标害虫.本文采用稻茎浸渍法测定氯虫苯甲酰胺对其非靶标害虫褐飞虱3龄若虫和成虫的毒力.结果表明:氯虫苯甲酰胺对褐飞虱3龄若虫和成虫的LC50分别为26.85和35.53mg·L-1;以氯虫苯甲酰胺亚致死浓度LC10和LC25分别处理褐飞虱3龄若虫后,对当代褐飞虱雌虫寿命无显著影响,但LC25剂量处理后,当代褐飞虱雌虫产卵量显著降低45.6粒.亚致死剂量处理褐飞虱3龄若虫后,显著影响F1代褐飞虱的产卵量和雌虫寿命,雌虫产卵量分别减少43.5和72.9粒,雌虫寿命分别缩短1.35和2.87d;两个剂量处理后F1代的各虫态发育历期均有所延长;施药后各项种群参数也发生了变化,种群内禀增长率rm分别降低12.8%和23.5%,净增殖率R0分别降低37.4%和68.7%,而世代平均历期T和种群加倍时间t均延长.表明氯虫苯甲酰胺亚致死剂量对褐飞虱种群增长具有一定的抑制作用.Chlorantraniliprole is a newly developed insecticide targeting at lepidopteron pests in rice fields,whereas Nilaparvata lugens（Stl） is one of the important non-target pests of the insecticide.In this paper,the rice stem dipping method was adopted to test the toxicity of chlorantraniliprole to the 3rd instar nymphs and adults of N.lugens.The LC50 of chlorantraniliprole to the 3rd instar nymphs and adults was 26.85 and 35.53 mg·L-1,respectively.When the 3rd instar nymph was exposed to the LC10 and LC25 of chlorantraniliprole,the life span of the survived female adults was not significantly affected.However,when treated with LC25 dosage,the fecundity of the survived female adults was significantly reduced by 45.6 eggs.After the 3rd instar nymph was treated with the sublethal doses LC10 and LC25 of chlorantraniliprole,the fecundity of the F1 females were decreased significantly by 43.5 and 72.9 eggs,and the life span of the F1 females was shortened by 1.35 and 2.87 d,respectively.The developmental periods of all the instars of F1 generation were delayed after treated with the sublethal doses LC10 and LC25 of chlorantraniliprole.The intrinsic rate of increase（rm） was decreased by 12.8% and 23.5%,and the net reproductive rate（R0） was decreased by 37.4% and 68.7%,respectively.Meanwhile,the mean generation time（T） and population doubling time（t） were delayed.Overall,the sublethal doses of chlorantraniliprole could suppress the population growth of N.lugens.

关 键 词：氯虫苯甲酰胺 褐飞虱 亚致死效应 生命表 

分 类 号：S433[农业科学—农业昆虫与害虫防治]