The objective of this study was to investigate immigration patterns from the overwintering host trees to crop fields and the population dynamics of Metcalfa pruinosa nymphs. The movement of M. pruinosa nymphs was monitored using sticky traps in several regions of Korea. Using these data, a nymphal immigration degree-day model was developed with a lower development threshold of 10.1 °C. In addition, nymphal survival rates in field cages were observed, and a stage transition degree-day model from nymphs to adults was developed based on field observation data. Finally, a population simulation model was constructed by integrating the following components: (1) beginning time of crop planting time, (2) population size of immigrant nymphs, (3) nymphal survival rates in crop fields, and (4) the stage transition model from nymphs to adults. There was good agreement between the population model output and nymphal abundance under various crop cultivation conditions. Planting of the crop after 205.5° days was determined to be important because the influx number of nymphs was relatively high in the early part of the nymphal occurrence time and was followed by a decrease. The peak time of nymphal influx was predicted to be 475.3 DD. However, even with a delayed time of crop planting, the time for the maximum nymphal occurrence and the time for the end of nymphal occurrence in crop fields did not vary substantially. After 800 DD, the population of M. pruinosa in crop fields was predicted to decrease gradually due to emigration of adults. These results can help with M. pruinosa control timing based on cultivation time in crop fields in countries where this pest has invaded.

这项研究的目的是调查从越冬寄主树到农田的移民模式以及梅特卡法若虫若虫的种群动态。M. pruinosa的运动在韩国的几个地区，使用粘性陷阱对若虫进行了监测。利用这些数据，开发出了一个较低的发育阈值10.1°C的若虫移民度日模型。此外，观察了田间笼中若虫的存活率，并根据田间观察数据建立了从若虫到成虫的阶段过渡度日模型。最后，通过整合以下组件构建了种群模拟模型：（1）作物种植开始时间；（2）移入若虫的种群数量；（3）农田中的若虫成活率；以及（4）阶段过渡从若虫到成年的模型。在各种作物栽培条件下，种群模型产量与若虫丰度之间有很好的一致性。205。确定5°天很重要，因为在若虫发生时间的早期，若虫的涌入数量相对较高，然后减少。若虫涌入的高峰时间预计为475.3 DD。但是，即使延迟了作物的播种时间，在田地中最大若虫发生的时间和若虫发生结束的时间也没有太大变化。800 DD之后，据预测，由于成年移民，作物田中的M. pruinosa逐渐减少。这些结果可以帮助根据病虫害入侵国家的农田中的种植时间控制普鲁氏沼虾的控制时间。