| 昼夜温度波动与亚致死浓度杀虫剂对荻草谷网蚜生活史性状和种群参数的影响 |
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| 引用本文：邢鲲,闫奕龙,韦娜,赵飞.昼夜温度波动与亚致死浓度杀虫剂对荻草谷网蚜生活史性状和种群参数的影响.植物保护学报,2025,52(1):113-122 |
| DOI：10.13802/j.cnki.zwbhxb.2025.2024036 |
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| 中文摘要:为明确昼夜温度波动变化与亚致死浓度杀虫剂对荻草谷网蚜Sitobion miscanthi的生态学影响，于室内测定（22±6）℃和（22±12）℃不同变温幅度以及亚致死剂量LC10的吡虫啉和高效氯氰菊酯对荻草谷网蚜寿命、繁殖与种群参数的影响。结果表明：在恒温22℃下，与对照相比，吡虫啉使荻草谷网蚜寿命显著缩短了1.15 d，繁殖力减少了8.28头，内禀增长率降低了0.069，净增殖率降低了0.136，世代周期降低了8.245；高效氯氰菊酯使荻草谷网蚜寿命显著缩短了0.27 d，繁殖力减少了1.78头，内禀增长率降低了0.050，净增殖率升高了0.282，世代周期降低了2.042。在对照处理下，与恒温22℃相比，变温幅度±6℃使荻草谷网蚜寿命延长了9.28 d，繁殖力增加了9.08头，内禀增长率降低了0.207，净增殖率升高了3.301，世代周期升高了10.686；变温幅度±12℃使荻草谷网蚜寿命缩短了1.50 d，繁殖力减少了18.74头，内禀增长率降低了0.148，净增殖率降低了2.132，世代周期降低了19.808。在变温幅度±6℃与±12℃下，与对照相比，吡虫啉使荻草谷网蚜寿命分别缩短了1.28 d和2.21 d，繁殖力分别减少了13.50头和1.75头，内禀增长率分别降低了0.124和0.078，世代周期分别降低了15.510和1.355；但是在变温幅度±12℃下，与对照相比，高效氯氰菊酯使荻草谷网蚜寿命延长了1.81 d，繁殖力增加了2.32头，内禀增长率升高了0.030，净增殖率升高了0.815，世代周期升高了2.675，且表现出显著的促进作用。表明温度波动幅度与杀虫剂温度属性对杀虫剂风险评估均是不能忽视的重要因素，并且明确两者之间的交互作用可以提高气候变化下杀虫剂风险评估的精准性。 |
| 中文关键词:荻草谷网蚜 昼夜温度 变幅温度 亚致死浓度 杀虫剂 生活史 |
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| The impact of diurnal temperature fluctuations and sublethal insecticide exposure on the life history traits and population parameters of the English grain aphid Sitobion miscanthi |
| Author Name | Affiliation | E-mail | | Xing Kun | Shanxi Key Laboratory of Integrated Pest Management in Agriculture, College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China | | | Yan Yilong | Shanxi Key Laboratory of Integrated Pest Management in Agriculture, College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China | | | Wei Na | Shanxi Key Laboratory of Integrated Pest Management in Agriculture, College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China | | | Zhao Fei | Shanxi Key Laboratory of Integrated Pest Management in Agriculture, College of Plant Protection, Shanxi Agricultural University, Taiyuan 030031, Shanxi Province, China | zhaofei12@126.com |
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| Abstract:Understanding the ecological impacts of diurnal temperature fluctuations and sublethal insecticide exposure on English grain aphid Sitobion miscanthii is crucial for refining pest management strategies under climate change. In this study, we evaluated the effects of different temperature fluctuation amplitudes, (22±6) ℃ and (22±12) ℃, along with sublethal doses (LC10) of imidacloprid (a temperaturepositive insecticide) and beta-cypermethrin (a temperature-negative insecticide), on the longevity, fecundity, and population parameters of S. miscanthi under controlled conditions. The results showed that under a constant temperature of 22 ℃, compared with the control group, imidacloprid significantly reduced aphid longevity by 1.15 days, fecundity by 8.28 nymphs, intrinsic rate of increase by 0.069, net reproductive rate by 0.136, and generation time by 8.245 days. Beta-cypermethrin led to a significant reduction in longevity by 0.27 days and fecundity by 1.78 nymphs, while decreasing the intrinsic rate of increase by 0.050. However, it increased the net reproductive rate by 0.282 and shortened the generation time by 2.042 days. Under control conditions, compared with a constant temperature of 22 ℃, a temperature fluctuation amplitude of ±6 ℃ increased aphid longevity by 9.28 days, fecundity by 9.08 nymphs, and net reproductive rate by 3.301, while decreasing the intrinsic rate of increase by 0.207 and extending the generation time by 10.686 days. In contrast, ±12 ℃ temperature fluctuation reduced longevity by 1.50 days, decreased fecundity by 18.74 nymphs, decreased the intrinsic rate of increase by 0.148, decreased the net reproductive rate by 2.132, and shortened the generation time by 19.808 days. The interaction between temperature fluctuations and insecticides revealed that at ±6 ℃ and ±12 ℃ fluctuations, imidacloprid reduced longevity by 1.28 and 2.21 days, respectively, decreased fecundity by 13.50 nymphs and 1.75 nymphs, reduced the intrinsic rate of increase by 0.124 and 0.078, and shortened the generation time by 15.510 and 1.355, respectively, compared with the control group. However, under ±12 ℃ temperature fluctuation, beta-cypermethrin increased longevity by 1.81 days, fecundity by 2.32 nymphs, intrinsic rate of increase by 0.030, net reproductive rate by 0.815, and extended the generation time by 2.675 days, showing a significant promoting effect. These findings underscore the importance of both temperature fluctuation amplitudes and insecticides temperature sensitivity in insecticide risk assessment. Understanding their interaction can improve the precision and accuracy of insecticide risk assessment under changing climate conditions. |
| keywords:Sitobion miscanthi diurnal temperature temperature amplitude sublethal concentration insecticide life history |
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