Managing Resistance Evolution in Two Pests to Two Toxins with Refugia
用监管模型分析美国中南部Bt棉花和拟除虫菊酯两种毒素下两种害虫的抗性演化，评估非Bt棉花避难所种植要求，发现减少避难所可提高利润，喷洒避难所比未喷洒更经济，动态政策略优于静态。
We use a regulatory model with resistance evolution in two pests to insecticidal Bt cotton and pyrethroids (a conventional insecticide) to examine non‐ Bt cotton (refuge) planting requirements designed to manage Bt ‐resistance evolution in the midsouth. Our analysis suggests that reduced refuge requirements would enhance producer profitability, sprayed refugia are more cost effective than unsprayed refugia, and producers would receive slightly higher returns under dynamic relative to static refuge policies. Pyrethroid susceptibility in one of the pests was a renewable resource, and toxin‐mixture effects associated with pyrethroid use in Bt cotton were important considerations for midsouth refuge policies.