肟菌酯对环境生物急性毒性及安全性评价
Acute Toxicity and Safety Evaluation of Trifloxystrobin to Environmental Organisms
摘要 本试验通过研究肟菌酯对10种环境生物急性毒性效应,以期评价其对环境生物的毒性风险.结果表明,肟菌酯对日本鹌鹑(Coturnixcoturnixjaponica)的经口毒性7 d-LD50和短期饲喂毒性8 d-LC50分别大于2.00×103 mg a.i.·kg-1 bw和5.00×103 mg a.i.·kg-1饲料,意大利蜜蜂(ApismelliferaL.)接触与经口毒性48 h-LD50分别为大于100μg a.i.·蜂-1和95.3μg a.i.·蜂-1,家蚕(Bombyxmori)96 h-LC50为1.61×103 mg a.i.·L-1,蚯蚓(Eiseniafoetida)14 d-LC50大于100 mg a.i.·kg-1干土,赤眼蜂(Trichogramma japonicum)24 h-LR50为0.337μg a.i.·cm-2,羊角月牙藻(Pseudokirchneriellasubcapitata)72 h-EC50为5.80×10-3 mg a.i.·L-1,大型溞(DaphniamagnaStraus)48 h-EC50为1.72×10-2 mg a.i.·L-1,斑马鱼(Brachydaniorerio)96 h-LC50为5.40×10-2 mg a.i.·L-1,非洲爪蟾(Xenopuslaevis)蝌蚪96 h-LC50为8.95×10-2 mg a.i.·L-1,土壤微生物28 d硝酸盐转化速率差异小于25%.因此,根据?化学农药环境安全评价试验准则?毒性等级划分标准,肟菌酯对鸟、蜜蜂、家蚕、蚯蚓等陆生生物为低毒,对水生生物的绿藻、大型溞、斑马鱼、非洲爪蟾蝌蚪均为高毒或剧毒,而对天敌赤眼蜂属高风险,故在田间使用过程中应采取措施降低其对水生生物以及天敌昆虫赤眼蜂急性毒性风险,以免造成危害.
Abstract:
We have tested trifloxystrobin on 10 kinds of non-target organisms to evaluate its toxicity risk to envi-ronmental organisms. Test results showed that the 7 d-LD50 of acute oral toxicity and 8 d-LC50 of dietary toxicity on Coturnixcoturnixjaponicawere >2.00×103 mg a.i.·kg-1 bw and >5.00×103 mg a.i.·kg-1 diet, respectively;48 h-LD50 of acute contact toxicity and oral toxicity on ApismelliferaL. were >100 μg a.i.·bee-1 and >95.3 μg a.i. ·bee-1, respectively;96 h-LC50 of Bombyxmoriwas 1.61×103 mg a.i.·L-1;14 d-LC50 of Eiseniafoetidawas>100 mg a.i.·kg-1 dry soil, 24 h-LR50 of Trichogrammajaponicumwas 0.337μg a.i.·cm-2;72 h-EC50 of Pseudokirch-neriellasubcapitatawas 5.80×10-3 mg a.i.·L-1;48 h-EC50 of DaphniamagnaStraus was 1.72×10-2 mg a.i.·L-1;96 h-LC50 of Brachydanioreriowas 5.40×10-2 mg a.i.·L-1;96 h-LC50 of Xenopuslaeviswas 8.95×10-2 mg a.i.·L-1;the difference of 28 d nitrate transformation rate of soil microorganism was<25%. According to the pesticide viru-lence classification standard suggested by Chemical Pesticides Environmental Safety Evaluation Test Guidelines, the test results indicated that the trifloxystrobin is low toxic to terrestrial organisms (quail, honeybee, silkworm and earthworm) but highly or extremely toxic to aquatic organisms (alga, daphnia, fish and Xenopuslaevis). It also can expose high risk to Trichogramma. When trifloyxteobin is deployed to farm fields, certain safety measures shall be taken to reduce its harm and risk to aquatic organisms and Trichogramma.
Author: Ouyang Xiaoqing Wu Chi Wang Changbin Zhou Qian Sun Tian He Mingyuan
作者单位: 湖南农业大学植物保护学院,长沙410128;北京依科世福科技有限公司,北京100096 北京依科世福科技有限公司,北京,100096
刊 名 生态毒理学报 ISTICPKU
年,卷(期): 2017, 12(4)
分类号: X171.5
在线出版日期: 2018年1月5日