Potgieter Linke, Human Dirk J, Downing Samantha
Department of Logistics, Faculty of Economics and Business Management, Stellenbosch University, Stellenbosch, South Africa.
J Econ Entomol. 2025 Feb 11;118(1):339-350. doi: 10.1093/jee/toae248.
The strategic use of refuge areas is a well-known method for delaying the development of pest resistance to Bacillus thuringiensis (Bt) crop. A lesser-known method to control against resistance development is sterile insect releases. In this article, an agent-based simulation model is used to test the effectiveness of combining the use of Bt sugarcane, refuge areas, and sterile insect releases as an integrated strategy against Eldana saccharina Walker (Lepidoptera: Pyralidae) infestation and resistance development. Individual insects are modeled with their own genetic traits on a simulated sugarcane field that represents either Bt or refuge area. The model is applied to 2 hypothetical case studies. In the first experiment, resistance development and infestation dynamics in Bt sugarcane without refuge areas are considered using various sterile:wild sterile release ratios, and different release distributions. In the second experiment, the inclusion of a refuge area in Bt sugarcane is considered, using various sterile:wild releases ratios and different release distributions. A trade-off between sterile insect releases and the use of the refuge area was observed, and could, in some cases, work against each other.
战略性使用避难区是一种延缓害虫对苏云金芽孢杆菌(Bt)作物产生抗性的著名方法。一种鲜为人知的防止抗性发展的方法是释放不育昆虫。在本文中,一个基于主体的模拟模型被用于测试将Bt甘蔗、避难区和释放不育昆虫作为一种综合策略来对抗埃氏蔗螟(鳞翅目:螟蛾科)侵害和抗性发展的有效性。在代表Bt或避难区的模拟甘蔗田上,对具有各自遗传特征的个体昆虫进行建模。该模型应用于两个假设的案例研究。在第一个实验中,使用各种不育:野生不育释放比率以及不同的释放分布,来考虑无避难区的Bt甘蔗中的抗性发展和侵害动态。在第二个实验中,考虑在Bt甘蔗中设置避难区,使用各种不育:野生释放比率以及不同的释放分布。观察到了不育昆虫释放和避难区使用之间的权衡,在某些情况下,它们可能会相互抵消。