Fu Chun, Liu Zhiqian, Xu Danping, Peng Yaqin, Liu Biyu, Zhuo Zhihang
Key Laboratory of Sichuan Province for Bamboo Pests Control and Resource Development, Leshan Normal University, Leshan 614000, China.
College of Environmental Science and Engineering, China West Normal University, Nanchong 637002, China.
Insects. 2024 Sep 12;15(9):689. doi: 10.3390/insects15090689.
(J.E. Smith) is a significant economic pest that has recently invaded Africa and Asia. However, much of the information regarding its ecological capabilities in these newly invaded environments remains largely unknown. In this study, the life history traits of the fall armyworm under conditions of increased temperature, different photoperiods, and varying humidity levels were systematically evaluated. Among 43 studies, a total of 20 studies were included in the analysis by passing the screening criteria, and random-effects meta-analysis, fixed-effects meta-analysis, and meta-regression were conducted. It has been found that with the increase in temperature above 20 °C, various physiological indicators of the fall armyworm are significantly enhanced. When the temperature reaches 32 °C, the physiological activities of are at their highest point. As the temperature increases, the duration of each developmental stage of the fall armyworm decreases significantly, accompanied by an increase in oviposition quantity and period in females. Additionally, the pupal development time is shortened, which leads to an increase in the lifespan of the adult moth. Using temperature and relative humidity as environmental variables, the optimal survival conditions for each insect state of the fall armyworm were calculated. These findings can assist in predicting the population dynamics of the fall armyworm and in formulating appropriate and practical management strategies.
草地贪夜蛾（J.E. Smith）是一种重要的经济害虫，最近已入侵非洲和亚洲。然而，关于其在这些新入侵环境中的生态能力的许多信息在很大程度上仍然未知。在本研究中，系统评估了草地贪夜蛾在温度升高、不同光周期和湿度水平变化条件下的生活史特征。在43项研究中，共有20项研究通过筛选标准纳入分析，并进行了随机效应荟萃分析、固定效应荟萃分析和荟萃回归。研究发现，当温度高于20℃时，草地贪夜蛾的各项生理指标显著增强。当温度达到32℃时，其生理活动处于最高点。随着温度升高，草地贪夜蛾各发育阶段的持续时间显著缩短，同时雌虫产卵量和产卵期增加。此外，蛹期发育时间缩短，导致成虫寿命延长。以温度和相对湿度作为环境变量，计算了草地贪夜蛾各虫态的最佳生存条件。这些发现有助于预测草地贪夜蛾的种群动态，并制定适当且实用的管理策略。
