中文摘要：

在实验室条件下通过药膜法研究了11种不同类型的杀虫剂对卷蛾分索赤眼蜂Trichogrammatoidea bactraeNagaraja成蜂的毒性,并研究了杀虫剂对其繁殖的亚致死效应,旨在评估各药剂对卷蛾分索赤眼蜂成蜂的安全性,为小菜蛾Plutella xylostella防治过程中杀虫剂的合理施用提供科学依据。研究结果表明,卷蛾分索赤眼蜂成蜂对阿维菌素最敏感,致死中浓度LC50和亚致死浓度LC_（30）分别为0.1984和0.1660 mg/L,其次为氟虫腈（0.2027和0.1903mg/L）、溴虫腈（0.3069和0.2038 mg/L）、多杀霉素（1.3630和1.0481 mg/L）、杀螟丹（8.1042和6.7891 mg/L）、高效氯氰菊酯（10.3647和5.8035 mg/L）和丁醚脲（11.5318和9.9212 mg/L）。经亚致死浓度LC30的阿维菌素、溴虫腈、杀螟丹、丁醚脲、多杀霉素和氟虫腈处理后,卷蛾分索赤眼蜂的寿命（1.00～1.67 d）显著缩短,寄生卵量（0～21.70粒/雌）明显降低,种群参数（净生殖力R_0、内禀增长率r_m、周限增长率λ和世代平均历期T）明显低于对照（P〈0.05）。田间推荐浓度的茚虫威、氟啶脲、苏云金杆菌Bacillus thuringiensis、虫酰肼对卷蛾分索赤眼蜂寿命及产卵量均没有不利影响,但能通过缩短其世代平均历期T,从而使净生殖力R_0、内禀增长率r_m和周限增长率λ增加。而经亚致死浓度LC30的高效氯氰菊酯处理后,卷蛾分索赤眼蜂的寿命（3.77 d）显著延长,寄生卵量（55.47粒/雌）明显提高,种群参数明显高于对照（P〈0.05）。结果说明,氟啶脲、茚虫威、苏云金杆菌和虫酰肼对卷蛾分索赤眼蜂较安全;丁醚脲对卷蛾分索赤眼蜂成蜂的寄生能力影响极大,在田间施用时应当尽量避开卷蛾分索赤眼蜂成蜂的盛发期。

英文摘要：

The toxicity of eleven insecticides of different categories on adults of Trichogrammatoidea bactrae Nagaraja and the sublethal effects of insecticides on their reproduction under laboratory conditions were studied,so that the safety of insecticides to adults of T.bactrae was evaluated.The results showed that the adults of T.bactrae were the most susceptible to avermectins at 8 h after exposure to fresh,dry insecticide films in glass vials,the LC50 and sublethal concentration（LC30） values were 0.1984 mg/L and 0.1660 mg/L,respectively,and second susceptible to fipronil（LC50 and LC30 values were 0.2027 mg/L and 0.1903 mg/L,respectively）,chlorfenapyr（LC50 and LC30 values were 0.3069 mg/L and 0.2038 mg/L, respectively）,spinosad（LC50 and LC30 values were 1.3630 mg/L and 1.0481 mg/L,respectively）, cartap（LC50 and LC_（30） values were 8.1042 mg/L and 6.7891 mg/L,respectively）,betacypermethrin （LC50 and LC30 values were 10.3647 mg/L and 5.8035 mg/L,respectively） and diafenthiuron（LC50 and LC30 values were 11.5318 mg/L and 9.9212 mg/L,respectively）.The LC30 values of avermectins, chlorfenapyr,cartap,diafenthiuron,spinosad and fipronil had significant effects on the longevity and fecundity of T.bactrae.After treated with these insecticides,the longevity of females（1.00 - 1.67 d） was shortened,and the number of eggs parasitized per female（0 -21.70） decreased,and therefore the life table parameters（R0,rm,λand T） of T.bactrae were statistically lower than those in the control.The field recommended concentration of indoxacarb,chlorfluazuron,Bacillus thuringienesis and tebufenozide had no effect on the longevity and fecundity of T.bactrae,but after treated with these insecticides,the R0,rm andλof T.bactrae were higher than those in the control.However,the longevity of females（3.77 d） was significantly extended,and the number of eggs parasitized per female（55.47） was significantly increased after the adults of T.bactrae were exposed to betacypermethrin,and therefore the life ta