3种酰胺类除草剂对斑马鱼不同生长阶段的急性毒性效应Acute Toxicity Effects of Three Amide Herbicides to Different Life Stages of Zebrafish(Danio rerio)
程艳红;葛婧;胡高洁;蔡磊明;陈列忠;蒋金花;
摘要(Abstract):
为探明酰胺类除草剂对鱼类不同生长阶段的毒性效应,分别以斑马鱼胚胎、8日龄仔鱼、55日龄幼鱼和3月龄成鱼为受试对象,研究3种酰胺类除草剂乙草胺、丙草胺和丁草胺对斑马鱼(Danio rerio)不同生长阶段的毒性效应。研究发现,高浓度乙草胺、丙草胺和丁草胺均可抑制斑马鱼胚胎的孵化。乙草胺对斑马鱼胚胎、仔鱼、幼鱼和成鱼的96 h-LC50值分别为5.82、1.34、3.00、1.44 mg·L-1,毒性从高到低顺序依次为:仔鱼>成鱼>幼鱼>胚胎。丙草胺对斑马鱼胚胎、仔鱼、幼鱼和成鱼的96 hLC50值分别为2.79、2.02、2.26、2.01 mg·L-1,毒性从高到低顺序依次为:仔鱼、成鱼>幼鱼>胚胎。丁草胺对斑马鱼胚胎、仔鱼、幼鱼和成鱼的96 h-LC50值分别为1.73、0.919、3.37、1.19 mg·L-1,毒性从高到低顺序依次为:仔鱼>成鱼>胚胎>幼鱼。研究结果表明,酰胺类除草剂对斑马鱼4个典型生长阶段的毒性差异较大,仔鱼阶段对酰胺类除草剂最敏感,成鱼其次。
关键词(KeyWords): 酰胺类除草剂;斑马鱼;急性毒性
基金项目(Foundation): 浙江省公益技术研究农业项目(2016C32098)
作者(Author): 程艳红;葛婧;胡高洁;蔡磊明;陈列忠;蒋金花;
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