首页 | 本学科首页   官方微博 | 高级检索  
   检索      

毒死蜱亚致死剂量对二斑叶螨实验种群动态的影响
引用本文:涂洪涛,张金勇,陈汉杰.毒死蜱亚致死剂量对二斑叶螨实验种群动态的影响[J].昆虫知识,2016(1):83-88.
作者姓名:涂洪涛  张金勇  陈汉杰
作者单位:中国农业科学院郑州果树研究所,郑州,450009
基金项目:公益性行业(农业)科研专项(201103020);现代苹果产业技术体系(CARS-28)
摘    要:【目的】为探讨毒死蜱(Chlorpyrifos)对二斑叶螨Tetranychus urticae Koch种群动态的影响,室内研究了毒死蜱亚致死剂量对二斑叶螨实验种群成螨和若螨的生长发育、存活和繁殖情况的影响。【方法】用浸虫法进行测定,生命表方法分析亚致死效应。【结果】结果表明毒死蜱亚致死剂量LC25处理成螨后,雌成螨寿命、总产卵量、子代孵化率、性比与对照组无显著差异,其净增值率、内禀增长率、周限增长率以及种群加倍时间显著低于对照组。毒死蜱亚致死剂量LC25处理若螨后,总产卵量、净增值率、世代平均周期显著低于对照组,内禀增长率、周限增长率以及种群加倍时间与对照组无显著差异。扩散试验证明毒死蜱对二斑叶螨有较强的刺激扩散作用。【结论】以上结果说明毒死蜱亚致死剂量对不同发育阶段的二斑叶螨发育和繁殖的影响不同,毒死蜱对二斑叶螨的刺激扩散作用可能是引起二斑叶螨再猖獗的原因之一。

关 键 词:毒死蜱  二斑叶螨  亚致死效应  扩散行为

Sublethal effect of chlorpyrifos on the population dynamics of an experimental Tetranychus urticae Koch population
Abstract:Objectives] To investigate the effects of chlorpyrifos onTetranychus urticae Koch population dynamics, specifically the sublethal effects of chlorpyrifos on the development, survival rate and reproduction ofT. urticae. Methods] Toxicity was tested using the pest-dipping method and the sublethal effects of chlorpyrifos determined by means of life tables. Results]Female fecundity, adult female longevity, F1hatchability, and the sex ratio ofT. urticae treated with a sublethal concentration (LC25) of chlorpyrifos were not significantly different to those of the control, however, the net reproductive rate, intrinsic rate of natural increase, finite rate of increase, and population doubling time, were all significantly lower than those of the control. Female fecundity, net reproductive rate, and mean generation time ofT. urticae nymphs treated with a sublethal concentration (LC25) of chlorpyrifos were significantly higher than those of the control, but the intrinsic rate of natural increase, finite rate of increase, and population doubling time, were not significantly different to those of the control. A dispersal test proved that chlorpyrifos strongly stimulated the dispersal ofT. urticae. Conclusion] The results indicate that the sublethal effects of chlorpyrifos onT. urticaediffered according to developmental stage, and that the dispersal stimulus of chlorpyrifos may be a factor influencing the resurgence of this mite.
Keywords:chlorpyrifos  Tetranychus urticae Koch  sublethal effect  dispersal behavior
本文献已被 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号