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Complex delayed and transgenerational effects driven by the interaction of heat and insecticide in the maternal generation of the wheat aphid, Sitobion avenae

文献类型： 外文期刊

作者： Cao, Jun-Yu 1 ; Xing, Kun 2 ; Zhao, Fei 2 ;

作者机构： 1.Lvliang Univ, Dept Life Sci, Lvliang, Peoples R China

2.Shanxi Agr Univ, Coll Plant Protect, Shanxi Key Lab Integrated Pest Management Agr, Taiyuan 030031, Peoples R China

3.Shanxi Shouyang Agroecosyst Natl Observat & Res S, Taiyuan, Peoples R China

关键词： development; thermal intensity; imidacloprid; fitness; progeny

期刊名称：PEST MANAGEMENT SCIENCE （ 影响因子：4.845； 五年影响因子：4.674 ）

ISSN： 1526-498X

年卷期： 2021 年 77 卷 10 期

页码：

收录情况： SCI

摘要： BACKGROUND Experience of an earlier environment plays an important role in the induction of delayed and even intergenerational phenotypes of an organism. Evidence suggests that rapid adaptation to an environmental stressor can change the performance of organisms, and even enable them to deal with other stressors. The goal of this study was to determine the effects of adult imidacloprid exposure on life-history traits within and between generations of the cereal aphid, Sitobion avenae, under three developmental conditions: constant temperature, 22 degrees C; a low-intensity thermal condition, 22 + 34 degrees C for 2 h per day; and a high-intensity thermal condition, 22 + 38 degrees C for 2 h per day. RESULTS Early thermal experience not only changed the tolerance of S. avenae to the insecticide, imidacloprid, but also caused adults to incur fitness costs: the higher the heat intensity, the higher the costs. Negative transgenerational impacts of combined heat and insecticide stressors were limited to the developmental stage, whereas positive stimulation of heat intensity was observed during the adult stage. Overall, nymphal thermal experience exacerbated the detrimental effects of adult insecticidal exposure on the intrinsic rate of population increase in the maternal generation, but stimulated a net reproductive rate in the succeeding offspring generation. CONCLUSION These findings underpin the importance of considering the experience of the early developmental environment, but also enhance our understanding of the transgenerational effects of combined thermal and insecticide stressors on the population fate of S. avenae. They also help to assess the efficacy of chemical control in a warming world.

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