Nawaz Muhammad, Cai Wanlun, Jing Zhao, Zhou Xingmiao, Mabubu Juma Ibrahim, Hua Hongxia
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
Chemosphere. 2017 Jul;178:496-503. doi: 10.1016/j.chemosphere.2017.03.082. Epub 2017 Mar 22.
In order to further develop integrated pest management (IPM) approaches for controlling insect pests, it is important to estimate the effects of pesticides. In this study, the toxicity and sublethal effects of the insecticide chlorantraniliprole on a non-specific predator, the multicolored Asian lady beetle Harmonia axyridis, were evaluated and life table parameter data were analyzed statistically using the age-stage, two-sex life table procedure. The results of this study show that the development time of second and fourth instar larvae as well as pupa was significantly prolonged in populations treated with LC10 (2.42 mg (a.i.) L) and LC30 (12.06 mg (a.i.) L), while adult longevity and fecundity were both significantly reduced and the preoviposition period (POP) was significantly prolonged following treatment compared to the control. In addition, the net reproductive rate (R), as well as the intrinsic (r) and finite rate of increase (λ) were significantly decreased in groups treated with the insecticide. These results reveal that because sublethal concentrations of chlorantraniliprole impair the population growth of H. axyridis, more attention should be paid to the use of this chemical as a component of IPM strategies.
为了进一步开发用于控制害虫的综合虫害管理（IPM）方法，评估杀虫剂的效果很重要。在本研究中，评估了杀虫剂氯虫苯甲酰胺对非特异性捕食者异色瓢虫的毒性和亚致死效应，并使用年龄-阶段两性生命表程序对生命表参数数据进行了统计分析。本研究结果表明，在经LC10（2.42毫克（有效成分）/升）和LC30（12.06毫克（有效成分）/升）处理的种群中，二龄和四龄幼虫以及蛹的发育时间显著延长，而成虫寿命和繁殖力均显著降低，与对照相比，处理后的产卵前期（POP）显著延长。此外，在经杀虫剂处理的组中，净生殖率（R）以及内禀增长率（r）和有限增长率（λ）均显著降低。这些结果表明，由于氯虫苯甲酰胺的亚致死浓度会损害异色瓢虫的种群增长，因此在将这种化学品用作IPM策略的一个组成部分时应更加谨慎。
