【作者】 吴福安； 陶士强； 余茂德； 程嘉翎；

【Author】 WU Fu-An TAO Shi-Qiang YU Mao-De CHENG Jia-Ling Sericultural Research Institute,Chinese Academy of Agricultural Science,Zhenjiang 212018; College of Biotechnology, Jiangsu University of Science and Technology,Zhenjiang 212018; College of Sericulture and Biotechnology of Southwest University, Chongqing, 400716

【机构】 中国农业科学院蚕业研究所； 江苏科技大学生物技术学院； 西南大学蚕学与生物技术学院；

【摘要】 采用生殖力生命表综合参数Jackknife统计推断技术和生存分析中Wilcoxon(Gehan)统计方法,对寄主为桑树的朱砂叶螨种群水平上的亚致死效应进行了研究。在(30±1)(?),RH70±15％,16L:8D光照条件下,朱砂叶螨卵受毒死蜱亚致死剂量LC35处理后,雌成螨寿命、子代卵孵化率、性比与对照组差异不显著,而每雌总产卵量显著低于对照组;处理组内禀增长率为0．3279±0．0033,对照组的内禀增长率为0．3717±0．0043,处理组内禀增长率显著低于对照组,结果表明朱砂叶螨卵受毒死蜱LC35亚致死剂量处理后种群的生态适合度降低。更多还原

【Abstract】 The LC35 sublethal effect of chlorpyrifos on population dynamics in Carmine spider mites, tetranychus cinnabarinus Boisduval, was investigated using Jackknife technique and Wilcoxon(Gehan) statistic in laboratory conditions of (30±1)℃ and 70±15% RH with a photoperiod of 16L:8D. Chlorpyrifos-treated T. cinnabarinus resulted in a significant reduction in the total oviposition:42.37±2. 270, compared to 52.50±2.433 in the untreated females, but we could not detect any increase or decrease in the longevity of female adult , F1 hatchability and sex ratio of T. cinnabarinus exposed to chlorpyrifos of LC35 sublethal concentration. Exposure to Chlorpyrifos treatments reduced the intrinsic rate of increase , the intrinsic rate of increase dropped from 0.3717±0.0043 at untreated control to 0.3279±0.0033 at LC35. These data suggest that the population ecological fitness of T. cinnabarinus is decreased by eggs exposed to chlorpyrifos of LC35 sublethal concentration.更多还原