白纹伊蚊抗高效氯氰菊酯和抗敌百虫品系的生物学特性及种群参数

白纹伊蚊Aedes albopictus Skuse抗高效氯氰菊酯和抗敌百虫品系的某些种群参数及生物学特性与敏感品系的比较有显著差异，两个抗药性品系之间差异也较明显。抗高效氯氰菊酯品系(Rc)的繁殖力强、平均世代历期短，雌性个体比率高。抗敌百虫品系(Rt)有适合度缺陷、平均世代历期长，雌性个体比率低。Rc和Rt的孵化率均低于敏感品系。成虫死亡率由高到低依次为Rt、Rc、S。综合分析得知，高效氯氰菊酯刺激白纹伊蚊生殖、种群增长快。抗敌百虫白纹伊蚊明显地表现出生殖不利性，种群加倍较慢。

The population parameters and biological characteristics of higheffective cypermethrin resistance and trichlorphon resistancestrains of Aedes albopictus

Biological characteristics and population parameters of the high effective cypermethrin resistant (Rc) and trichlorphon-resistant (Rt) Aedes albopictus were significantly different compared with that of the susceptible strain (S). The difference between the two resistant strains was significant too. The greater fecundity, shorter time of life cycle, and the higher rate of female were detected in Rc strain than in Rt one. The latter had obvious defect in fitness. Hatching rate of both Rc and Rt strains were lower than that of the S strain. The imaginal mortality was Rt＞Rc＞S. The results show that the high effective cypermethrin could stimulate oviposition and enhance population growth of the mosquito.