《环境昆虫学报》

为明确生物杀虫剂多杀霉素及其3种混剂对蜜蜂和赤眼蜂Trichogrammatid spp的毒性，采用摄入法、接触法和药膜法分别测定4种制剂对意大利工蜂Apis mellifera L成蜂和玉米螟赤眼蜂Trichogramma ostriniae成峰的毒性。结果表明：摄入法测定，25 g/L多杀霉素悬浮剂、4%阿维菌素·多杀霉素水乳剂、3%甲阿维·多杀霉素悬浮剂、6%甲阿维·多杀霉素水分散粒剂，对蜜蜂半致死浓度LC50(48 h)分别为593、145×10-1、304×10-1、466×10-1 aimg/L。25 g/L多杀霉素悬浮剂对蜜蜂摄入毒性为高毒，其余为剧毒；接触法测定，4种制剂半致死剂量LD50(48 h)分别为00887、0289、00046、00053 aiμg/蜂，对蜜蜂的接触毒性均为高毒；药膜法测定，4种制剂对玉米螟赤眼蜂成蜂的半致死浓度LC50(24 h)分别为012、0097、022、033 aimg/L，安全性评价结果表明，4种制剂对玉米螟赤眼蜂成蜂均为极高风险性。

英文摘要:

An assessment of spinosad and 3 mixtures toxicity to honeybees (Apis mellifera L) and Trichogramma ostriniae were conducted through laboratory method, meanwhile the safety of these insecticides were also evaluated Stomach toxicity tests performed in standardized conditions on adult bees showed that spinosad insecticides were high or very high toxicity to the honeybee with LC50(48 h) of 593 aimg/L for 25 g/L spinosad SC, 145×10-1 aimg/L for 4% abmectin·spinosad EW, 304×10-1 aimg/L for 3% emamectin benzoate·spinosad SC, 466×10-1 aimg/L for 6% emamectin benzoate·spinosad WJ LD50(48 h) by topical application were 00887,0289,00046 and 00053 aiμg per bee respectively According to the guideline issued by national environmental protection, the contact toxicity of all the tested insecticides were high to bees The adult T ostriniae determined by using the dry film residue method under laboratory conditions, LC50 (24 h) of spinosad and its mixtures were 012, 0097, 022, 033 aimg/L, respectively, and results of safety evaluation showed that the four insecticides were very high risk to adult T ostriniae.

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