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当前位置: 首页 > 文章 > Cd~(2+)、Hg~(2+)、As~(3+)对可口革囊星虫的急性毒性试验 水产科学 2008,27 (2) 20-23
Position: Home > Articles > Acute Toxicity of Cd~(2+),Hg~(2+) and As~(3+) to Phascolosoma esculenta Fisheries Science 2008,27 (2) 20-23

Cd~(2+)、Hg~(2+)、As~(3+)对可口革囊星虫的急性毒性试验

作  者：
李懿;李太武;苏秀榕
单  位：
宁波大学生命科学与生物工程学院
关键词：
可口革囊星虫;半致死浓度;镉;汞;砷;急性毒性
摘  要：
采用次生体腔注射、静水法研究了Cd2+、Hg2+和As3+对可口革囊星虫的单一毒性试验。试验结果表明:Cd2+、Hg2+和As3+对星虫的24 h LD50分别为:158.79 mg/kg,87.39 mg/kg和295.80 mg/kg;48 h LD50分别为:74.94 mg/kg,39.89 mg/kg和46.35 mg/kg。Cd2+、Hg2+、As3+对星虫的毒性大小为:Hg2+>As3+≈Cd2+,LD50均随试验时间的延长而减小。毒性反应:注射Cd2+组星虫身体伸长,吻变细,肠管排出;注射Hg2+组身体变硬,分节;注射As3+组身体变软。相对增重方差分析显示:不同注射浓度,相对增重均有显著差异;不同处理时间,Hg2+、As3+处理的星虫有显著差异,而Cd2+处理的星虫无显著差异。
译  名：
Acute Toxicity of Cd~(2+),Hg~(2+) and As~(3+) to Phascolosoma esculenta
作  者：
LI Yi,LI Tai-wu,SU Xiu-rong(Faculty of Life Science and Biotechnology,Ningbo University,Ningbo 315211,China)
关键词：
Phascolosoma esculenta;median lethal concentration(LD50);Cd;Hg;As;acute toxicity
摘  要：
The acute toxicity of Cd2+,Hg2+ or As3+ to Phascolosoma esculentas was determined by injection and static toxicity test.The 24 h LD50 of Cd2+,Hg2+ and As3+ was 158.79 mg/kg,87.39 mg/kg and 295.80 mg/kg,respectively;the 48 h LD50 of Cd2+,Hg2+ and As3+ 74.94 mg/kg,39.89 mg/kg and 46.35 mg/kg,respecfively.The toxicity of the three metal ions varied in a descendent order as: Hg2+>As3+≈Cd2+ and the LD50 decreased in a time-dependent manner.The animals exposed to Cd2+ had an elongate body,thin introvert,and evaginated intestine.The animals exposed to Hg2+ showed stiffening and segmenting body while the soft body was observed in the animals exposed to As3+.The ANOVA demonstrated that there were significant differences in weight gain in the animals exposed to different concentrations of Cd2+,Hg2+ and As3+.In different treatment periods,there were significant differences in weight gain in the animals exposed to different concentrations of Cd2+ and Hg2+,no significant differences in administration of Cd2+.

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