李娇;王姮;韩昭衡;石生宝;王永华;丁君;

• 1:大连海洋大学农业部海洋水产增养殖学与生物技术重点开放实验室

摘要(Abstract)：

为初步探讨农药对海胆胚胎的急性毒性效应,以虾夷马粪海胆(Strongylocentyotus internedius)为实验材料,研究了8种常见农药--草甘膦(Glyphosate)、百草枯(Paraquat)、异菌脲(Iprodione)、代森锰锌(Mancozeb)、三唑醇(Triadimenol)、霜霉威(Propamocarb)、百菌清(Chlorothalonil)和速克灵(Procymidone)对海胆胚胎各发育期(二细胞期、四细胞期、上浮囊胚期、原肠期、棱柱幼体期、四腕幼虫期)的半数效应浓度(EC50),并分析了正辛醇/水分配系数(LogP)与EC50的关系.结果显示:1)8种农药对海胆胚胎各发育期均具有一定的急性毒性,以四腕幼虫期为例,8种农药的EC50值分别为草甘膦(3.99mg·L-1)>百草枯(10.38mg·L-1)>代森锰锌(20.77mg·L-1)>速克灵(55.42mg·L-1)>霜霉威(56.09mg·L-1)>异菌脲(86.29mg·L-1)>三唑醇(273.20mg·L-1)>百菌清(647.38mg·L-1).2)LogP与EC50呈现一定的正相关性,即随着LogP的增加,各农药对海胆胚胎的抑制率逐渐降低.

关键词(KeyWords)： 农药;虾夷马粪海胆;胚胎发育;毒性影响

Abstract:

Keywords:

基金项目(Foundation): 国家高技术研究发展计划(863)项目(No.2006AA10A411);; 国家海洋局海洋溢油鉴别与损害评估技术重点实验室开放基金项目

作者(Author): 李娇;王姮;韩昭衡;石生宝;王永华;丁君;

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