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通过设计不同的迁移比例(1％、5％、10％、20％),研究棉铃虫抗药性基因流动对三氟氯氰菊酯和氰戊菊酯抗性频率的影响。结果表明,抗性个体迁入敏感种群,使得敏感种群抗性频率增加,迁移比例越大,抗性频率增加越大;而敏感个体迁入抗性种群使得其抗性频率减少,随着敏感个体迁入比例的增大,抗性种群中抗性频率的减少量越大。利用抗性频率变化值与相应迁移率的比值来表示迁移的相对效率,结果表明迁移率为1％时,迁移影响抗性个体频率变化的相对效率最高。
The effects of resistance gene flowering on resistance to cyhalothrin and fenvalerate in cotton bollworm were studied by designing different migration ratios (1%, 5%, 10%, 20%). The results showed that the resistant individuals migrated into the sensitive population, which led to the increase of the frequency of resistance of the susceptible population. The greater the migration proportion was, the more the frequency of resistance increased. However, the susceptibility of susceptible individuals to resistant population decreased, Increasing the proportion of immigrants, the greater the reduction in the frequency of resistance in resistant populations. The relative efficiency of migration was expressed by the ratio of the change of resistance frequency to the corresponding mobility. The results showed that the relative efficiency of migration affected the frequency of resistant individuals was the highest when the mobility was 1%.