浙江农业学报 ›› 2018, Vol. 30 ›› Issue (3): 420-425.DOI: 10.3969/j.issn.1004-1524.2018.03.10

• 植物保护 • 上一篇    下一篇

8种杀虫剂对朱砂叶螨毒力及家蚕的急性毒性比较

谢道燕, 杨振国, 柴建萍, 周春涛, 罗雁婕*   

  1. 云南省农业科学院 蚕桑蜜蜂研究所,云南 蒙自 661101
  • 收稿日期:2017-05-16 出版日期:2018-03-20 发布日期:2018-03-21
  • 通讯作者: *罗雁婕,E-mail: yanjieluo@126.com
  • 作者简介:谢道燕(1972—),女,云南楚雄人,高级实验师,主要从事桑树病虫害研究。E-mail: xiedaoyan123@163.com
  • 基金资助:
    国家自然科学基金(31560520); 云南省科技计划项目(2015BB009); 现代农业产业技术体系建设专项(CARS-22-SYZ27)

Toxicities of eight insecticides against Tetranychus cinnabarinus and their acute toxicities to Bombyx mori

XIE Daoyan, YANG Zhenguo, CHAI Jianping, ZHOU Chuntao, LUO Yanjie*   

  1. Institute of Sericulture & Apiculture, Yunnan Academy of Agricultural Sciences, Mengzi 661101, China
  • Received:2017-05-16 Online:2018-03-20 Published:2018-03-21

摘要: 采用叶碟喷雾法测定鱼藤酮、印栋素、苦参碱、苦皮藤素、藜芦碱、乙基多杀菌素、四氯虫酰胺、吡丙醚等8种常用杀虫剂对桑园朱砂叶螨成螨和螨卵的室内毒力,并以食下毒叶法检测对家蚕3龄起蚕的急性毒性。结果表明:印栋素、苦参碱、鱼藤酮、苦皮藤素、藜芦碱对朱砂叶螨成螨毒杀活性较高,半致死浓度(LC50)分别为0.213、0.659、1.621、13.014、16.548 mg·L-1;苦皮藤素、印栋素、藜芦碱、鱼藤酮和苦参碱对朱砂叶螨螨卵毒杀活性较高,LC50值分别为0.254、3.497、13.564、21.936、35.030 mg·L-1。3龄起蚕取食添加8种杀虫剂的桑叶48 h后,均出现吐液、拒食、体缩等中毒症状,除吡丙醚属于中等毒性外,其余杀虫剂对家蚕为高毒或剧毒。印栋素、苦参碱、鱼藤酮、苦皮藤素、藜芦碱等杀虫剂可以有效防控桑园朱砂叶螨成螨及螨卵,但在使用中应注意其对家蚕的安全性。

关键词: 杀虫剂, 朱砂叶螨, 家蚕, 急性毒性, 相对毒力

Abstract: In the present study, in-door toxicities of eight insecticides including rotenone, azadirachtin, matrine, celangulin, veratridine, spinetoram, SYP-9080, pyriproxyfen against Tetranychus cinnabarinus were measured via spraying on the Potter spray tower, and the acute toxicities of these insecticides to 3rd instar of silkworm were exuviated by food intake poisonous leaf method. The results indicated that the acaricidal activities of azadirachtin, matrine, rotenone, celangulin, veratridine against T. cinnabarinus adults were higher than the other insecticides, and the according median lethal concentrations (LC50) were 0.213, 0.659, 1.621, 13.014, 16.548 mg·L-1, respectively. The ovicidal activities of celangulin, azadirachtin, veratridine, rotenone and matrine against T. cinnabarinus eggs were higher than the other insecticides, and the according LC50 were 0.254, 3.497, 13.564, 21.936, 35.030 mg·L-1, respectively. The 3rd instar larvae of silkworm showed spit, antifeedant, body shrinkage and other symptoms of poisoning 48 h after eating mulberry leaves containing the above eight insecticides. Among these pesticides, except that pyriproxyfen was moderately toxic, the remaining pesticides to silkworms were highly toxic or hypertoxic. Therefore, azadirachtin, celangulin, veratridine, rotenone and matrine could effectively control mulberry mites including adult mites and mite eggs, but more attention should be paid to the safety of silkworms during application in field.

Key words: insecticide, Tetranychus cinnabarinus, Bombyx mori, acute toxicity, relative toxicity

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