Wu Qiu-Lin, Hu Gao, Westbrook John K, Sword Gregory A, Zhai Bao-Ping
Department of Entomology, Nanjing Agricultural University, Nanjing 210095, China.
Department of Entomology, Texas A&M University, College Station, TX 77843-2475, USA.
Insects. 2018 Sep 5;9(3):115. doi: 10.3390/insects9030115.
Many methods for trajectory simulation, such as Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT), have been developed over the past several decades and contributed greatly to our knowledge in insect migratory movement. To improve the accuracy of trajectory simulation, we developed a new numerical trajectory model, in which the self-powered flight behaviors of insects are considered and trajectory calculation is driven by high spatio-temporal resolution weather conditions simulated by the Weather Research and Forecasting (WRF) model. However, a rigorous evaluation of the accuracy of different trajectory models on simulated long-distance migration is lacking. Hence, in this study our trajectory model was evaluated by a migration event of the corn earworm moth, , in Texas, USA on 20⁻22 March 1995. The results indicate that the simulated migration trajectories are in good agreement with occurrences of all pollen-marked male immigrants monitored in pheromone traps. Statistical comparisons in the present study suggest that our model performed better than the popularly-used HYSPLIT model in simulating migration trajectories of . This study also shows the importance of high-resolution atmospheric data and a full understanding of migration behaviors to the computational design of models that simulate migration trajectories of highly-flying insects.
在过去几十年里，已经开发出了许多轨迹模拟方法，比如混合单粒子拉格朗日综合轨迹（HYSPLIT），这些方法极大地增进了我们对昆虫迁飞运动的了解。为了提高轨迹模拟的准确性，我们开发了一种新的数值轨迹模型，该模型考虑了昆虫的自主飞行行为，并且轨迹计算由天气研究和预报（WRF）模型模拟的高时空分辨率天气状况驱动。然而，目前缺乏对不同轨迹模型在模拟长距离迁飞方面准确性的严格评估。因此，在本研究中，我们的轨迹模型通过1995年3月20日至22日在美国得克萨斯州发生的棉铃虫蛾迁飞事件进行了评估。结果表明，模拟的迁飞轨迹与在性诱捕器中监测到的所有带有花粉标记的雄性迁入棉铃虫蛾的出现情况高度吻合。本研究中的统计比较表明，在模拟棉铃虫蛾的迁飞轨迹方面，我们的模型比常用的HYSPLIT模型表现更好。这项研究还表明了高分辨率大气数据以及对迁飞行为的全面理解对于模拟高飞昆虫迁飞轨迹的模型计算设计的重要性。
