Sublethal and Transgenerational Toxicities of Chlorfenapyr on Biological Traits and Enzyme Activities of Paracoccus marginatus (Hemiptera: Pseudococcidae)

文献类型： 外文期刊

第一作者： Li, Jian-Yu

作者： Li, Jian-Yu;Chen, Yan-Ting;Wang, Qiu-Yue;Zheng, Li-Zhen;Shi, Meng-Zhu;Fu, Jian-Wei;Shi, Meng-Zhu

作者机构：

关键词： Paracoccus marginatus; chlorfenapyr; sublethal dose exposure; transgenerational effects; enzyme activities

期刊名称：INSECTS （ 影响因子：3.139； 五年影响因子：3.285 ）

ISSN：

年卷期： 2022 年 13 卷 10 期

页码：

收录情况： SCI

摘要： Simple Summary Papaya mealybug, Paracoccus marginatus, is an important invasive pest worldwide, which attacks more than 200 host plants. Chlorfenapyr has been demonstrated to have a significant control effect on P. marginatus. To evaluate the long-term sublethal effects of chlorfenapyr on P. marginatus, the sublethal and transgenerational effects of chlorfenapyr on the biological traits and changes of enzyme activities of P. marginatus were investigated. The results showed that chlorfenapyr had significant effects on the development of subsequent generations of P. marginatus, and chlorfenapyr also activated the activities of SOD of P. marginatus. The results demonstrated that chlorfenapyr-mediated sublethal effects occur in at least two successive generations of P. marginatus. Therefore, it is necessary to reapply the chlorfenapyr prior to emergence of the F-3 generation to suppress the population and prevent outbreaks of P. marginatus. Papaya mealybug, Paracoccus marginatus Williams and Granara de Willink (Hemiptera: Pseudococcidae), is an economically important, invasive insect that is now distributed worldwide. Chlorfenapyr has been demonstrated to have a significant control effect on P. marginatus. In order to evaluate the sublethal and transgenerational effects of chlorfenapyr on P. marginatus, the life table data of three consecutive generations were collected and analyzed by the age stage, two-sex life table method, and the enzyme activities were assayed using a spectrophotometer. The results showed that exposure to the insecticide had significant effects on the biological traits of subsequent generations of P. marginatus, and a higher intrinsic rate of increase (r), finite rate of increase (lambda), net reproductive rate (R-0), and a shorter mean generation time (T) were observed in the chlorfenapyr-treated F-1 mealybugs. Enzyme activity assays showed that chlorfenapyr significantly inhibited the activities of catalase (CAT) and peroxidase (POD) while activating the activities of superoxide dismutase (SOD), which suggested that SOD, CAT, and POD may play an important role in the self-defense of P. marginatus against chlorfenapyr. These results conclusively demonstrated that exposure of P. marginatus to sublethal concentrations of chlorfenapyr induced hormetic effects on the F-1 generation while having negative effects on the F-0 and F-3 generations.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序