论文部分内容阅读
目的评估白纹伊蚊对溴氰菊酯的抗性风险,预测抗性发展速率,为科学合理用药提供依据。方法采用群体汰选法获得抗性品系,采用数量遗传学的域性状分析法估算抗性现实遗传力(h2)并预测不同选择压力下抗性发展的速率。结果经过17代的室内选育,白纹伊蚊对溴氰菊酯的抗性达到36.7倍;白纹伊蚊对溴氰菊酯的抗性h2为0.125 7,抗性风险较大;根据抗性发展规律,得出3个不同阶段的h2分别为0.116 9(F0~F5)、0.154 0((F5~F11)、0.011 4(F11~F17),根据不同阶段的h2值预测不同选择压力下(死亡率50%、60%、70%、80%、90%),抗性上升10倍所需的代数分别为7.3~105.2、6.4~92.6、6.4~92.6、5~72、3.3~47.6、2.4~35.2代。结论白纹伊蚊对溴氰菊酯抗性风险大,应科学合理用药。
Objective To evaluate the resistance risk of deltamethrin to deltamethrin and to predict the rate of development of resistance, so as to provide basis for scientific and rational drug use. Methods Resistant strains were obtained by population selection method. Quantitative genetic domain analysis was used to estimate the resistance hereditary heritability (h2) and to predict the rate of resistance development under different selection pressures. Results After 17 generations of indoor breeding, Aedes albopictus resistance to deltamethrin reached 36.7 times; Aedes albopictus deltamethrin resistance h2 was 0.125 7, the risk of resistance is greater; according to resistance (F5 ~ F11) and 0.0114 (F11 ~ F17) in three different stages, respectively, and h2 values at different stages were predicted under different selection pressures (Mortality 50%, 60%, 70%, 80%, 90%). The algebra needed to increase resistance tenfold was 7.3 ~ 105.2,6.4 ~ 92.6,6.4 ~ 92.6,5 ~ 72,3.3 ~ 47.6, 2.4 ~ 35.2 generations.Conclusion Aedes albopictus has a high risk of resistance to deltamethrin, and should be scientifically and rationally used.