非离子氨对红鳍东方鲀的急性毒性研究  

Study on Acute Toxicity of Non-ionic Ammonia on Takifugu rubripes

作　　者：杨晶晶[1] 孟祥科[1] 王鑫[1] 汪家鑫 王双耀[1] 张钊[1] 

机构地区：[1]大连海洋大学水产与生命学院,辽宁大连116023

出　　处：《现代农业科技》2013年第6期253-254,共2页Modern Agricultural Science and Technology

摘　　要：采用半静水生物测试法,研究pH值为7.5～7.7,溶氧7 mg/L,盐度32,温度(24.3±2)℃条件下非离子氨对红鳍东方鲀的急性毒性。试验鱼体质量为(8.5±0.5)g。急性试验设定氨氮浓度梯度为0、56.99、64.89、73.84、84.10、95.74、109.00mg/L,对应的非离子氨浓度分别为0、0.95、1.08、1.23、1.40、1.59、1.81 mg/L。结果表明:在急性试验中,氨氮对红鳍东方鲀产生了毒性,暴露24、48、72、96 h LC50分别为97.61、87.22、78.62、72.38 mg/L,安全浓度为7.24 mg/L。非离子氨对红鳍东方鲀的24、48、72、96 h LC50分别为1.62、1.45、1.31、1.20 mg/L,安全浓度为0.12 mg/L。The acute toxicity of non-ionic ammonia on Takifugu rubripes with weight of（8.5±0.5）g was studied by semi-static bioassay in pH 7.5～7.7,DO 7 mg/L,salinity 32 and（24.3±2）℃ water.The acute experimental concentrations of ammonia nitrogen were set up at 0 mg/L,56.99 mg/L,64.89 mg/L,73.84 mg/L,84.10 mg/L,95.74 mg/L,109.00 mg/L,the corresponding concentrations of non-ionic ammonia were 0 mg/L,0.95 mg/L,1.08 mg/L,1.23 mg/L,1.40 mg/L,1.59 mg/L,1.81 mg/L.The results showed that toxicant to Takifugu rubripes has produced in the acute experiment,the 24,48,72,96 h median lethal concentrations of ammonia nitrogen were 97.61 mg/L,87.22 mg/L,78.62 mg/L,72.38 mg/L respectively,the safe concentration was 7.24 mg/L.And the 24,48,72,96 h median lethal concentrations of non-ionic ammonia were 1.62 mg/L,1.45 mg/L,1.31 mg/L,1.20 mg/L respectively,the safe concentration was 0.12 mg/L.

关 键 词：非离子氨 红鳍东方鲀 急性毒性 半致死浓度 安全浓度 

分 类 号：S965.199[农业科学—水产养殖]