期刊
ECOTOXICOLOGY
卷 28, 期 7, 页码 825-833出版社
SPRINGER
DOI: 10.1007/s10646-019-02080-8
关键词
Dinotefuran; Lethal effects; Sublethal effects; Hormoligosis; Rhopalosiphum padi
资金
- China National Natural Science Foundation as part of the project Construction of a suppression subtractive hybridization cDNA library and functional analysis of differentially expressed cytochrome P450s [31201541]
- Chinese Postdoctoral Science Foundation [2018M640675]
- Scientific Research Foundation of Hainan University [KYQD(2R)1963]
The wheat aphid Rhopalosiphum padi (Linnaeus) (Hemiptera: Aphididae) is a devastating pest of wheat crops worldwide. Dinotefuran, a novel neonicotinoid insecticide, has been used to prevent piercing-sucking agricultural insects, such as R. padi. This research showed that the dinotefuran not only caused direct mortality but also affected the physiology of R. padi via sublethal effects. In this study, residual film bioassay results indicated that there were no significant differences in the toxicity of dinotefuran between field in 2017 and laboratory strains. However, the longevity, fecundity and female preoviposition of the F-0 generation were significantly decreased by exposure to different sublethal doses (L-10, L-20 and L-30) of dinotefuran. In contrast, the fecundity and female preoviposition of the F-1 generation were significantly increased by the sublethal treatment L-20, although this dose reduced net reproductive rate, intrinsic rate of increase and finite rate of increase. These findings are the first laboratory evidence of hormesis attributable to low dinotefuran doses. Developmental duration of nymphs was significantly increased by the sublethal doses L-20 and L-30 but not L-10. Sublethal exposure to dinotefuran can increase the transgenerational population growth of R. padi and affected demographic parameters of the target insect. This study provides useful data for developing management strategies for R. padi involving the use of dinotefuran.
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