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当前位置: 首页 > 文章 > 虫酰肼及其衍生物0593对家蚕的毒性及作用机理 昆虫学报 2008,51 (11) 1157-1163
Position: Home > Articles > Toxicity and action mechanism of tebufenozide and its derivative 0593 to silkworm (Bombyx mori) Acta Entomologica Sinica 2008,51 (11) 1157-1163

虫酰肼及其衍生物0593对家蚕的毒性及作用机理

作  者：
司树鼎;王开运;张文成;王冕;石绪根;栾炳辉
单  位：
山东省烟台市农业科学研究院;山东农业大学植物保护学院
关键词：
家蚕;虫酰肼;虫酰肼衍生物;毒性;保护酶
摘  要：
为明确虫酰肼衍生物0593对家蚕Bombyx mori的毒性,本研究采用食下毒叶法测定了虫酰肼及其衍生物0593对家蚕的毒性,观察了亚致死浓度下对家蚕生长发育的影响,并测定了虫酰肼及其衍生物0593对家蚕幼虫体内保护酶的影响,对虫酰肼0593的作用机理进行了初步探索。结果表明:虫酰肼及其衍生物0593对2龄家蚕96h的LC50值分别为1.2863和0.3364mg·L-1,属高毒级药剂;虫酰肼及其衍生物0593在亚致死剂量下对家蚕的生长发育有明显的不利性,可使幼虫历期缩短0.5～2d;处理组眠期体重、全茧量、蛹重和化蛹率与对照相比均显著降低;对4龄幼虫体内多酚氧化酶和几丁质酶也有较明显影响,虫酰肼及其衍生物0593处理家蚕,处理后6h对体内多酚氧化酶有明显激活作用,12h后表现出显著的抑制作用;虫酰肼及其衍生物0593对家蚕体内几丁质酶均有激活作用。0593对保护酶的影响较虫酰肼明显。结果提示虫酰肼及其衍生物0593对家蚕毒性高,对其生长发育和保护酶类均有不利性,不适合在桑园及其周边农田使用。
译  名：
Toxicity and action mechanism of tebufenozide and its derivative 0593 to silkworm (Bombyx mori)
作  者：
SI Shu-Ding 1,2 ,WANG Kai-Yun 1,ZHANG Wen-Cheng1,WANG Mian1,SHI Xu-Gen1,LUAN Bing-Hui2(1. College of Plant Protection,Shandong Agriculture University,Tai'an,Shandong 271018,China; 2. Yantai Agricultural Science Research Institute,Yantai,Shandong 265500,China)
关键词：
Bombyx mori; tebufenozide; tebufenozide derivative; toxicity; protective enzymes
摘  要：
In order to definite the toxicity of tebufenozide derivative 0593 to silkworm Bombyx mori,we detected the toxicity of tebufenozide and its derivative 0593 to B. mori with food intake method,observed the growth and development of B. mori at their respective sublethal concentration,and determined their effects on endogenous protective enzymes in B. mori larvae. Based on the experimental results,we primarily discussed the action mechanism of ebufenozide derivative 0593. The results showed that the LC 50 of tebufenozide and its derivative 0593 to 2nd instar larvae of B. mori were 1.2863 mg·L -1 and 0.3364 mg·L -1 after 96 h exposure,respectively,and both were of high toxicity. At the sublethal dose,the growth and development of B. mori had been obviously affected,which could shorten larval period by 0.5～2 d. Compared with control,larval weight during molting stage,whole cocoon weight,pupal weight and pupation rate decreased of the treatments dramatically. The PPO activity in 4th instar larvae of B. mori was activated at 6 h after treatment,and then inhibited at 12 h after treatment. Both tebufenozide and its derivative 0593 significantly activated the chitinase activity in 4th instar larvae of B. mori. 0593 showed more significant effects on endogenous protective enzymes than tebufenozide. These results indicate that tebufenozide and its derivative 0593 belong to high toxicity grade to B. mori,and have adverse effects on its development and endogenous protective enzymes. So they are not suitable to be used in and around mulberry fields.

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