杀扑磷抗性获得对奥氏钝绥螨发育历期与繁殖能力的影响

为探索杀扑磷抗性获得对奥氏钝绥螨Amblyseius womersleyi Schicha发育历期与繁殖能力的影响，研究了在25℃与30℃温度下，奥氏钝绥螨的杀扑磷抗性系与敏感系的发育历期与繁殖能力。结果表明：奥氏钝绥螨的杀扑磷抗性系与敏感系的交配产卵行为习性没有差异。在25℃与30℃温度下，奥氏钝绥螨的各发育历期、产卵期、产卵高峰期，每雌日产卵量与总产卵量，卵孵化率及雌雄成螨性比等，在杀扑磷抗性系与敏感性系之间无明显差异。结果说明杀扑磷抗性获得对奥氏钝绥螨的发育历期与繁殖能力没有明显影响。

Effects of methidathion resistance obtaining on developmental duration and reproductive capacity of the predacious mite Amblyseius womersleyi Schicha (Acari: Phytoseiidae)

To explore the effects of acquisition of methidathion resistance on developmental duration and reproductive capacity, the developmental duration and reproductive capacity in the methidathion resistant strain (R-strain) and susceptible strain (S-strain) of the predacious mite Amblyseius womersleyi Schicha (Acari: Phytoseiidae) were studied at 25℃and 30℃in the laboratory. The results indicated that there were no significant differences in mating and oviposition behavior between R-strain and S-strain of A. womersleyi. The developmental duration, the oviposition period and peak, the number of eggs laid by one female in a day or during a generation, the egg hatching rate and the sexual ratio of R-strain were similar with these of S-strain. The results suggest that obtaining methidathion resistance has no obvious negative effects on the developmental duration and reproductive capacity of A. womersleyi.