Cu^(2+)、Zn^(2+)对三疣梭子蟹幼蟹的急性毒性  

Acute Toxicity of Cu^(2+), Zn^(2+) to Juveniles of Portunus trituberculatus

作　　者：苏志星 何杰 许文军 郑宽宽 罗佶龙 王绪杰 SU Zhi-xing;HE Jie;XU Wen-jun;et al(School of Fisheries of Zhejiang Ocean University, Zhoushan 316022;Marine and Fishery Research Intitute of Zhejiang Ocean University, Marine and Fisheries Research Institute of Zhejiang Province, Zhoushan 316021, China)

机构地区：[1]浙江海洋大学水产学院,浙江舟山316022 [2]浙江海洋大学海洋与渔业研究所浙江省海洋水产研究所,浙江舟山316021

出　　处：《浙江海洋大学学报（自然科学版）》2017年第4期302-307,共6页Journal of Zhejiang Ocean University：Natural Science

基　　金：浙江省科技厅计划项目(2016F50042;2015F30003);舟山市科技项目(2017C43032);浙江海洋大学博士启动基金(22135010815)

摘　　要：以三疣梭子蟹幼蟹(体质量为:15.3±1.2 g)为实验动物,采用静水体外暴露法,开展了两种常见重金属离子(Cu^(2+)、Zn^(2+))的急性毒性和加和等毒性强度联合毒性实验。结果表明:(1)Cu^(2+)、Zn^(2+)对三疣梭子蟹幼蟹的96 h半致死质量浓度分别为3.934 mg/L和3.901 mg/L;三疣梭子蟹幼蟹对Cu^(2+)、Zn^(2+)的96 h安全质量浓度分别为0.039 34 mg/L和0.039 01 mg/L,表明两种重金属对梭子蟹幼蟹的毒性相近;(2)Cu^(2+)、Zn^(2+)离子在加和等毒性强度下对三疣梭子蟹幼蟹96 h联合毒性与其浓度配比相关,低毒性强度的Cu^(2+)对Zn^(2+)具有拮抗作用,低毒性强度的Zn^(2+)对Cu^(2+)具有协同作用,当Cu^(2+)、Zn^(2+)毒性强度相当时表现为相互独立作用。Portunus trituberculatus juveniles with body weight of 15.3±1.2 g have been chosen as the sub- jectsof our experiment which were exposed to heavy metalions （Cu2＋、Zn2＋） to investigate the influences of acute toxicity and joint toxicity by using stagnophile test method. The results showed that the median lethal concentra- tions （LCso） of Cu2＋, Zn2＋ for 96 h to juveniles of P. trituberculatus was 3.934 mg/L and 3.901 mg/L respectively, and the safety concentrations （SC） of Cu2＋、Zn2＋for 96 h was 0.039 34 mg/L and 0.039 01 mg/L, respectively. The results of the joint toxicity experiment showed that the joint toxicity at 96 h by the pairs of Cu2＋、Zn2＋was found complicated in relation to the concentration, low intensity Cu2＋ and high intensity Zn2＋were antagonism, low in- tensity Zn2＋ and high intensity Cu2＋ were synergism and same intensity of Cu2＋ and Zn2＋ showed absolute effect.

关 键 词：Cu2+、Zn2+ 急性毒性 联合毒性 三疣梭子蟹 幼蟹 

分 类 号：S92[农业科学—渔业资源]