重金属Cu^2+对棘腹蛙蝌蚪的急性毒性研究  

Study on the Acute Toxicity of Copper Ions to Tadpoles of Quasipaa boulengeri

作　　者：张小琴 覃仙凤 ZHANG Xiao-qin;QIN Xian-feng(College of Resources and Environment,Aba Teachers University,Wenchuan,Sichuan 623002)

机构地区：[1]阿坝师范学院资源与环境学院,四川汶川623002

出　　处：《安徽农业科学》2020年第17期115-117,121,共4页Journal of Anhui Agricultural Sciences

基　　金：阿坝师范学院校级项目(ASA18-03);大学生创新创业项目(201806048,S201910646075,S201910646076)。

摘　　要：为研究重金属Cu^2+对棘腹蛙蝌蚪的急性毒性效应,通过单一变量急性毒性试验研究其在室内条件(温度16~20℃、湿度88.5%左右)对棘腹蛙蝌蚪的毒性效应。结果表明:根据寇氏法原理,得到Cu^2+对2月龄棘腹蛙蝌蚪在24、48、72、96 h时的半致死浓度(LC50)分别为1.160、1.136、1.191和0.870 mg/L。依据安全浓度计算公式,计算出安全浓度为0.087 mg/L。根据毒性评价标准,比较了Cu^2+对不同种类蝌蚪的毒性程度,发现棘腹蛙蝌蚪的耐受性较弱。该研究可为水环境监测以及其他相关重金属离子的毒性研究提供参考,为更好地保护棘腹蛙蝌蚪提供基础数据材料。In order to study the acute toxic effects of heavy metal Cu^2+ on the tadpoles of Quasipaa boulengeri,a single-variable acute toxicity test was conducted to study the toxic effects of indoor conditions(temperature 16-20℃,humidity 88.5%)on the tadpoles.The results showed that the semi-lethal concentration(LC50)of heavy metal Cu^2+ at 24,48,72 and 96 h were 1.160,1.136,1.191,0.870 mg/L,respectively.According to the safe concentration calculation formula,the safe concentration was calculated to be 0.087 mg/L.According to the toxicity evaluation criteria,the toxicity degree of Cu^2+ to different species of tadpoles was compared,and the tadpoles of Q.boulengeri were weakly tolerated.This study can provide references for water environment monitoring and other related heavy metal ion toxicity studies,and provide basic data materials for better protection of Q.boulengeri.

关 键 词：CU^2+ 棘腹蛙蝌蚪 急性毒性 毒性评价 半致死浓度(LC50) 

分 类 号：S917.4[农业科学—水产科学]