We evaluated the direct effects of three different CO2 concentrations (400, 600 and 1,000 ppm) on the population parameters and growth of the bean bug, Riptortus pedestris, while being fed on soybean. The raw life history data from R. pedestris was analyzed using an age‐stage, two‐sex life table to take the viable development rate among individuals into account. Based on the age‐stage, two‐sex life table analysis, the population projections of R. pedestris provide the stage structure and variability of the population growth under different CO2 treatments. Our results showed significantly shorter immature durations and higher pre‐adult survival rate under elevated CO2 (1,000 ppm) than those under ambient CO2 (400 ppm). The population of R. pedestris reared under elevated CO2 conditions showed higher intrinsic and finite rates of increase but a lower mean generation time than R. pedestris reared under ambient CO2 conditions. Our results show the population parameters and growth of R. pedestris are influenced by increased CO2 relative to ambient CO2 treatment. Further studies on the long‐term direct effects of different CO2 levels on R. pedestris are essential to understand their population dynamics and to establish appropriate management strategies.

中文翻译：

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在 CO 2 浓度升高的情况下，Riptortus pedestris (Fabricius)（半翅目：Alydidae）的种群参数和生长

我们评估了三种不同的 CO2 浓度（400、600 和 1,000 ppm）对豆虫 Riptortus pedestris 的种群参数和生长的直接影响，同时以大豆为食。使用年龄阶段、两性生命表分析来自 R. pedestris 的原始生活史数据，以考虑个体之间的可行发育率。基于年龄阶段、两性生命表分析，R. pedestris 的种群预测提供了不同 CO2 处理下种群增长的阶段结构和变异性。我们的研究结果表明，与环境 CO2 (400 ppm) 相比，在升高的 CO2 (1,000 ppm) 下，未成熟持续时间显着缩短，成体前存活率更高。R 的人口 与在环境 CO2 条件下饲养的 R. pedestris 相比，在升高的 CO2 条件下饲养的 pedestris 显示出更高的内在和有限的增长率，但平均世代时间较短。我们的结果表明，相对于环境 CO2 处理，R. pedestris 的种群参数和生长受 CO2 增加的影响。进一步研究不同 CO2 水平对 R. pedestris 的长期直接影响对于了解其种群动态和制定适当的管理策略至关重要。