丁香菌酯对平突船卵溞的毒性效应  

Toxicity effect of coumoxystrobin on Scapholeberis mucronata

作　　者：郑豪杰 孙健 曹玲 尹晓辉[1,2] ZHENG Haojie;SUN Jian;CAO Ling;YIN Xiaohui(Zhejiang Agriculture and Forestry University,Hangzhou 311300,China;Collaborativeon Center of Zhejiang Green Pesticide,Hangzhou 311300,China)

机构地区：[1]浙江农林大学农业与食品科学学院,杭州311300 [2]浙江省绿色农药2011协同创新中心,杭州311300

出　　处：《农药学学报》2020年第4期716-720,共5页Chinese Journal of Pesticide Science

基　　金：浙江省绿色农药2011协同创新开放基金(LSNY201816);浙江省自然科学基金(LY14B070014).

摘　　要：丁香菌酯是中国自主研发的甲氧基丙烯酸酯类杀菌剂,为明确其对水生生物的毒性,本研究采用半静态试验法,分别检测了丁香菌酯对平突船卵溞的急性和慢性毒性。急性毒性试验结果表明,丁香菌酯对平突船卵溞的48 h-EC50值为202μg/L,属于高毒;慢性毒性试验结果表明,丁香菌酯对平突船卵溞初次产溞时间、产胎数、单雌产溞数及21 d体长等指标均有显著影响,对初次产溞数和蜕壳数影响不显著,以繁殖量为指标,其无可观察效应浓度(NOEC)为0.22μg/L,最低可观察效应浓度(LOEC)为0.67μg/L。研究表明,丁香菌酯胁迫对平突船卵溞的生长和繁殖有一定的抑制效应。该结果可为合理评价丁香菌酯对水生生态系统的风险提供参考。Coumoxystrobin is a strobilurin fungicide developed independently in China. In order to clarify the toxicity of coumoxystrobin to aquatic organisms, the acute toxicity and the chronic toxicity of coumoxystrobin on Scapholeberis mucronata were determined by the semi-static test method. The results of acute toxicity tests indicated that coumoxystrobin was highly toxic to S. mucronata, and the 48h-EC50 value was 202 μg/L. Results of the chronic toxicity tests showed a significant dose-effect relationship, including the first brood time, the number of offspring per adult, the number of broods and the average 21 d body length of survivors of the S. mucronata exposed to coumoxystrobin. The number of cumulative molts and the size of the first brood of S. mucronata were not significantly influenced by the exposure to coumoxystrobin. The 21 d no observed effect concentration(NOEC) of coumoxystrobin was 0.22 μg/L for S. mucronata and the lowest observed effect concentration(LOEC) was 0.67 μg/L on the basis of breeding amounts. The results showed that coumoxystrobin had inhibiting effects on the growth and reproduction of S. mucronata. The results provide a reference for the reasonable evaluation of the risk of coumoxystrobin to aquatic ecosystem.

关 键 词：甲氧基丙烯酸酯类杀菌剂 丁香菌酯 平突船卵溞 急性毒性 慢性毒性 半静态试验法 水生生物 

分 类 号：S482.2[农业科学—农药学] TQ450.2[农业科学—植物保护]