铜离子对大菱鲆幼鱼的急性毒性  

Acute toxicity of copper ion on juvenile Scophthalmus maximus

作　　者：师皓晨 万玉美[1] 孙桂清 赵海涛 崔兆进 吴彦 陈秀玲 SHI Hao chen;WAN Yu mei;SUN Gui qing;ZHAO Hai tao;CUI Zhao jin;WU Yan;CHEN Xiu ling(Ocean College of Hebei Agricultural University,Qinhuangdao 066000,China;Hebei Marine and Aquatic Science Research Institute,Qinhuangdao 066000,China;Administration of Ocean and Fisheries of Beidaihe New Area,Qinhuangdao,Qinhuangdao 066000,China)

机构地区：[1]河北农业大学海洋学院,河北秦皇岛066000 [2]河北省海洋与水产科学研究院,河北秦皇岛066000 [3]秦皇岛北戴河新区海洋和渔业局,河北秦皇岛066000

出　　处：《河北渔业》2021年第12期1-4,25,共5页

基　　金：国家现代农业产业技术体系资助(CARS-47-Z02);河北省现代农业产业技术体系特色海产品创新团队海水鱼岗专项经费资助;农业高质量发展关键共性技术攻关专项(20326701D)。

摘　　要：在水温(15±2)℃条件下采用静水生物测试法,研究Cu^(2+)胁迫对体重(8.19±1.47)g,体长(6.0±0.4)cm的大菱鲆(Scophthalmus maximus)幼鱼的急性毒性。研究结果表明:随水中Cu^(2+)浓度的升高,大菱鲆幼鱼表现出更多显著的急躁狂游、抬头频繁、跳跃、鳃盖起伏剧烈和分泌黏液等应激行为,随胁迫时间增加,大菱鲆幼鱼的死亡率显著升高。Cu^(2+)对大菱鲆幼鱼的48 h、72 h和96 h半数致死浓度(LC_(50))分别为2.926、1.733和1.221 mg/L。安全质量浓度(SC)为0.1221 mg/L。暴露时间为48 h、72 h和96 h回归方程分别为y=2.065 x+4.0371,y=4.0953 x+4.0223和y=8.7459 x+4.243。Cu^(2+)对大菱鲆幼鱼属于中等毒性物质。The acute toxicity of Cu^(2+)on juvenile Scophthalmus Maximus with body weight of(8.19±1.47)g and body length of(6.0±0.4)cm was studied by hydrostatic biological test at the water temperature(15±2)℃.The results showed that juvenile turbot exhibited more significant stress behaviors such as restless swimming,frequent head raising,jumping,severe fluctuation of gill lid and mucus secretion with the increase of Cu^(2+)concentration.The mortality of juvenile turbot increased significantly with the increase of stress time.The median lethal concentrations(LC_(50))of Cu^(2+)to juvenile turbot were 2.926,1.733 and 1.221 mg/L at 48 h,72 h and 96 h,respectively.Safety mass concentration(SC)was 0.1221 mg/L.The regression equations of exposure time for 48 h,72 h and 96 h were y=2.065 x+4.0371,y=4.0953 x+4.0223 and y=8.7459 x+4.243,respectively.Cu^(2+)belongs to middle level toxicity substance to juvenile turbot.

关 键 词：大菱鲆 急性毒性 Cu^(2+) LC_(50) SC 

分 类 号：X171.5[环境科学与工程—环境科学] X503.225