淡色库蚊溴氰菊酯抗性品系生物学特性的研究

目的　比较抗性品系和敏感品系主要生物学特性的异同 ,求抗性品系相对适合度 ,为杀虫剂的合理使用提供理论依据。方法　观察并记录淡色库蚊抗性品系及敏感品系吸血、繁殖和发育等生物学特性 ,组建实验种群生命表。结果　抗性品系吸血率低于敏感品系且差异显著 ;卵期死亡率高于敏感品系且差异显著 ;卵、幼虫和蛹的发育历期均长于敏感品系且差异显著 ;抗性品系适和度为 0 .66。结论　淡色库蚊溴氰菊酯抗性品系存在适合度缺陷。

Study on the Biological Characteristics of Deltamethrin-resistant Strain of Culex pipiens pallens

Objective To find disadvantage of resistant strain by comparing the major biological characteristics of susceptible strain with resistant strain and calculating the fitness of resistant strain,for the better theories about reasonable utilization of pesticides. Methods The biological characteristics about bloodsucking,reproduction and development of resistant and susceptible strains were observed and recorded,and the life table of the experimental populations was constituted. Results The bloodsucking rate of resistant strain was lower than that of susceptible strain and the difference was significant. The mortality of eggs of resistant strain was higher than that of susceptible strain and the difference was significant. The developmental duration of eggs,larvae and pupae were longer than that of susceptible strain and the difference was significant. The resistant strain was calculated to have fitness value of 0.66 relative to the susceptible strain. Conclusion The resistant strain was related to disadvantage of reproduction and development.