Hormetic effects of thiamethoxam on Schizaphis graminum: demographics and feeding behavior
文献类型： 外文期刊
作者： Gul, Hina 1 ; ul Haq, Ihsan 2 ; Ullah, Farman 3 ; Khan, Shanza 2 ; Yaseen, Aqsa 2 ; Tariq, Kaleem 4 ; Guncan, Ali 5 ; Desneux, Nicolas 6 ; Liu, Xiaoxia 1 ;
作者机构： 1.China Agr Univ, Coll Plant Protect, Dept Entomol, MARA Key Lab Pest Monitoring & Green Management, Beijing 100193, Peoples R China
2.Natl Agr Res Ctr, Inst Plant & Environm Protect, Insect Pest Management Program, Islamabad, Pakistan
3.Inst Plant Protect & Microbiol, Zhejiang Acad Agr Sci, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China
4.Abdul Wali Khan Univ Mardan, Dept Entomol, Mardan, Khyber Pakhtunk, Pakistan
5.Ordu Univ, Fac Agr, Dept Plant Protect, TR-52200 Ordu, Turkiye
6.Univ Cote Dazur, INRAE, UMR ISA, F-06000 Nice, France
关键词： Stimulatory effects; Sublethal effects; Insecticide toxicity; Hormetic effects; Demographic parameters; Thiamethoxam
期刊名称：ECOTOXICOLOGY （ 影响因子：2.7； 五年影响因子：2.9 ）
ISSN： 0963-9292
年卷期： 2024 年 33 卷 3 期
页码：
收录情况： SCI
摘要： In agroecosystems, insects contend with chemical insecticides often encountered at sublethal concentrations. Insects' exposure to these mild stresses may induce hormetic effects, which has consequences for managing insect pests. In this study, we used an electrical penetration graph (EPG) technique to investigate the feeding behavior and an age-stage, two-sex life table approach to estimate the sublethal effects of thiamethoxam on greenbug, Schizaphis graminum. The LC5 and LC10 of thiamethoxam significantly decreased longevity and fecundity of directly exposed adult aphids (F-0). However, the adult longevity, fecundity, and reproductive days (RPd)-indicating the number of days in which the females produce offspring - in the progeny generation (F-1) exhibited significant increase when parental aphids (F-0) were treated with LC5 of the active ingredient. Subsequently, key demographic parameters such as intrinsic rate of increase (r) and net reproductive rate (R-0) significantly increased at LC5 treatment. EPG recordings showed that total durations of non-probing (Np), intercellular stylet pathway (C), and salivary secretion into the sieve element (E1) were significantly increased, while mean duration of probing (Pr) and total duration of phloem sap ingestion and concurrent salivation (E2) were decreased in F-0 adults exposed to LC5 and LC10. Interestingly, in the F1 generation, total duration of Np was significantly decreased while total duration of E2 was increased in LC5 treatment. Taken together, our results showed that an LC(5 )of thiamethoxam induces intergenerational hormetic effects on the demographic parameters and feeding behavior of F-1 individuals of S. graminum. These findings have important implications on chemical control against S. graminum and highlight the need for a deeper understanding of the ecological consequences of such exposures within pest management strategies across the agricultural landscapes.
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