摘要
为探究并比较端足类河蜾蠃蜚对Cd2+、Cr6+、Hg2+三种不同重金属胁迫的响应,在实验室通过半静态方式,对河蜾蠃蜚进行了96 h急性毒性实验。结果表明:河蜾蠃蜚被放入实验溶液后会迅速无规律游动,之后运动频次逐渐减少;Cd2+、Cr6+、Hg2+对河蜾蠃蜚96 h半致死浓度(LC50)分别为1.46 mg/L、5.7 mg/L、3.6μg/L,三种重金属对河蜾蠃蜚的毒性大小顺序为Hg2+>Cd2+>Cr6+;Cd2+、Cr6+、Hg2+对河蜾蠃蜚的毒性效应与其浓度呈显著正相关关系(P<0.05),毒性强度随其作用时间的延长而增大。
In order to explore and compare the toxicity responses of Corophium acherusicum under the exposure of Cd2＋,Cr6＋,Hg2＋,96 h static-renewal acute toxicity tests on C.acherusicum was investigated.Results showed that C.acherusicum would conduct irregular movement rapidly after being put into experimental solutions,then movement frequency of C.acherusicum reduced gradually.The 96 h LC50 value of cadmium,chromium,mercury for C.acherusicum respectively was 1.46 mg/L,5.7 mg/L,3.6 μg/L.Toxic intensity of the order is Hg2＋ Cd2＋ Cr6＋.There were significantly positive correlations between the toxic effects of cadmium,chromium,mercury on C.acherusicum and the concentrations of cadmium,chromium,mercury and the toxic intensity became higher as the exposure time increased.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2013年第4期551-554,共4页
Marine Environmental Science
基金
海洋公益性行业科研项目(201005016)
国家自然科学基金(41106078)
国家海洋局青年海洋科学基金(2011116)
