文献类型： 外文期刊
第一作者： Jia, Biantao
作者： Jia, Biantao;Zhang, Junliang;Hong, Shanshan;Chang, Xiaoli;Li, Xianchun;Li, Xianchun
作者机构：
关键词： Plutella xylostella L; chlorfenapyr; sublethal effect; biological parameters; hormesis
期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.462； 五年影响因子：4.688 ）
ISSN： 1526-498X
年卷期：
页码：
收录情况： SCI
摘要： BACKGROUND The diamondback moth (DBM), Plutella xylostella (L.), is the most destructive pest of cruciferous vegetables worldwide. Chlorfenapyr is an important insecticide for controlling DBM. The impacts of three sublethal doses (LC1, LC10 and LC30) of chlorfenapyr on the chlorfenapyr-exposed DBM individuals and their unexposed F-1 and F-2 offspring were investigated in order to reveal the non-lethal deleterious effects of chlorfenapyr and its potential hormetic effects. RESULTS LC1 significantly increased female pupa weight of F-0 and F-1 generations, and F-0 fecundity as well as F-1 gross reproduction rate (GRR). The LC1-elicited rise in emergency rate and fecundity was significantly greater in F-0 than in F-1. By contrast, LC30 significantly decreased age-specific survival rates, pupation rate, male pupal weight, emergence rate and fecundity of F-0 and F-1 generations as well as female adult proportion and GRR, net reproduction rate (R-0), intrinsic rate of increase (r(m)) and finite rate of increase (lambda) of F-1 generation. The LC30-induced reductions in pupation rate, adult emergence rate, male and female pupa weight, and fecundity were greater in F-1 than in F-0. While LC10 elicited only a mild inhibition (extension of pupal duration) in F-0, it yielded both deleterious (drops in female proportion and age-specific survivals) and hormetic effects (ups in male longevity and female fecundity) in F-1. CONCLUSION The results demonstrate that the sublethal effects of chlorfenapyr on DBM vary from inhibition to stimulatory hormesis, depending on the dose and generation. (c) 2022 Society of Chemical Industry.
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