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Your Position :Home->Past Journals Catalog->2022年59 No.1

Sublethal effects of imidacloprid on the survival and reproduction of Schizaphis graminum (Rondani)
Author of the article:XIE Jia-Yan;WU Cong;LIN Jia;LI Rui;CAI Guang-Hua
Author's Workplace:School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China;School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China;School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China;School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China;School of Life Science and Technology, Wuhan Polytechnic University, Wuhan 430023, China
Key Words:Schizaphis graminum; imidacloprid; sublethal effect; survival; reproductive period
Abstract:
[Objectives]  The effects of sublethal concentrations of imidacloprid on the survival and reproduction of three successive generations of Schizaphis graminum (Rondani) were determined. [Methods]  The LC50 of imidacloprid to S. graminum was tested using the leaf-dip method. The parental (F0) generation was exposed to either the LC40 dose of imidacloprid (LC40 group), or distilled water (control group), and the survival and reproduction of this and two successive generations were measured and compared. [Results]  All three LC40 groups had significantly lower longevity, fewer offspring per female, and a shorter reproductive period, than the F0 control group. The survival and reproductive parameters of the F1 and F2 LC40 groups, were, however, no different to those of the control group. In addition, the number of offspring per female, and other reproductive parameters of LC40 groups significantly increased in successive generations. [Conclusion]  Exposure to a sublethal dose of imidacloprid significantly reduces the survival and reproduction of the F0 generation of S. graminum but the magnitude of these effects decreases in successive generations. The survival and reproductive parameters of the F1 and F2 LC40 groups were not significantly different to those of the control group.
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