高CO2浓度下烯啶虫胺亚致死浓度对褐飞虱生活史和种群动态的影响
Effects of sublethal concentration of nitenpyram on the life history and population dynamics of brown planthopper, Nilaparvata lugens under elevated CO2 levels
周洪汕，尚方格，陈亮，赵慕华，郝涛，吴刚
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DOI：10.7679/j.issn.2095-1353.2024.085
作者单位：华中农业大学植物科技学院
中文关键词：褐飞虱；高CO2浓度；烯啶虫胺；种群动态；两性生命表
英文关键词：Nilaparvata lugens; elevated CO2; nitenpyram; population dynamic; two-sex life table
中文摘要：
摘 要 【目的】 通过研究高CO2浓度下烯啶虫胺亚致死浓度对褐飞虱Nilaparvata lugens生活史和种群参数的影响，明确褐飞虱在高CO2浓度下生物学响应特征，为未来全球气候变暖下褐飞虱的防控提供理论参考。【方法】 利用两性生命表，研究了当前大气CO2浓度（Ambient CO2）和高CO2浓度（Elevated CO2）下烯啶虫胺亚致死浓度LC15对褐飞虱生活史参数的影响，并用软件模拟了褐飞虱的种群动态。【结果】 烯啶虫胺亚致死浓度LC15处理，两个CO2浓度下均可显著延长褐飞虱的若虫发育历期（P<0.05），进一步延长褐飞虱平均世代周期。两个CO2浓度下对照处理无显著差异（P>0.05）。烯啶虫胺亚致死浓度LC15处理褐飞虱3龄若虫后，当前大气CO2浓度下褐飞虱雌虫产卵量无显著差异（P>0.05），高CO2浓度下雌虫产卵量显著增加（P<0.05），从366.5粒上升到473.4粒；当前大气CO2浓度下褐飞虱种群内禀增长率从
0.195 0下降到0.174 1，净增殖率从181.7下降到129.8；高CO2浓度下褐飞虱种群内禀增长率从0.187 0上升到0.198 5，净增殖率从137.4上升到236.7。【结论】 烯啶虫胺亚致死浓度处理褐飞虱，高CO2浓度下褐飞虱繁殖力增加，有利于种群增长，可能存在再猖獗的风险。
英文摘要：
Abstract [Aim] To investigate the effects of sublethal concentrations of nitenpyram on the individual life history and population parameters of Nilaparvata lugens under elevated CO2, and clarify the biological characteristics of N. lugens to elevated CO2, and thereby provide information relevant to the prevention and control of this pest in the future global warming. [Methods] The effects of a sublethal concentration of nitenpyram LC15 on the life history parameters of the brown planthopper under ambient, and elevated, CO2 concentrations were investigated using a two-sex life table, and the population dynamics of this species was simulated using software. [Results] An LC15 sublethal concentration of nitenpyram significantly prolonged nymph development under both CO2 concentrations (P<0.05), and further extended the average generation history. No significant difference was found between control treatments under both CO2 concentrations (P>0.05). There was no significant difference in egg production under ambient CO2 conditions (P>0.05), but female fecundity increased significantly from 366.5 to 473.4 under elevated CO2 levels (P<0.05). The intrinsic growth rate also increased from 0.187 0 to 0.198 5, and the net reproductive rate increased from 137.4 to 236.7 under elevated CO2 levels. [Conclusion] Brown planthoppers treated with a sublethal concentration of nitenpyram had increased fecundity under an elevated CO2 conditions, which suggests that global warming may make it harder to control of this pest.