12种常见农药对海胆胚胎发育的毒性影响Toxic Effects of Twelve Pesticides on the Development of Sea Urchin Embryos
孙雪峰;丁君;张辉;贾艳平;王永华;
摘要(Abstract)：
为了研究低浓度下农药对海胆胚胎的毒性影响,以及正辛醇/水分配系数(LogP)与致死率的关系,实验研究了12种常见农药(阿维菌素、硫丹、除虫脲、甲氰菊酯、三环唑、使它隆、抑霉唑、戊唑醇、磺胺吡啶、磺胺甲噁唑、磺胺二甲嘧啶和磺胺嘧啶)在低浓度(0.01mg.L-1)下对光棘球海胆(Strongylocentrotus nudus)胚胎发育的急性毒性影响.结果显示:1)实验浓度下,磺胺吡啶、三环唑、磺胺嘧啶和抑霉唑分别对受精膜举起期、2细胞期、上浮囊胚期和棱柱幼体期相对致死率最高,分别达到3.70%、6.19%、5.84%和6.07%.2)农药对海胆胚胎发育存在低剂量有毒物质的刺激作用(Hormesis现象).3)在海胆胚胎各发育期,LogP与相对致死率呈现一定的负相关性,即随着LogP的增加,各农药对海胆胚胎的相对致死率逐渐下降.
关键词(KeyWords)： 农药;光棘球海胆;胚胎发育;毒性影响
基金项目(Foundation): 农业部渔业生态环境重点开放实验室开放基金;; 国家863重大项目课题(No.2006AA10A411);; 辽宁农业攻关项目(No.2007203004)
作者(Author): 孙雪峰;丁君;张辉;贾艳平;王永华;
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