背角无齿蚌幼蚌对水体铜的吸收特征研究  

Study on absorption characteristics of aquatic copper by Anodonta woodiana juveniles

作　　者：刘凯[1] 陈修报[2] 刘洪波[2] 姜涛[2] 杨健[1,2] LIU Kai;CHEN Xiubao;LIU Hongbo;JIANG Tao;YANG Jian(Wuxi Fisheries College,Nanjing Agricultural University,Wuxi 214081,China;Key Laboratory of Fishery Ecological Environment Assessment and Research Conservation in Middle and Lower Reaches of the Yangtze River,Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences,Wuxi 214081,China)

机构地区：[1]南京农业大学无锡渔业学院,江苏无锡214081 [2]中国水产科学研究院淡水渔业研究中心,中国水产科学研究院长江中下游渔业生态环境评价和资源养护重点实验室,江苏无锡214081

出　　处：《生态科学》2024年第1期19-24,共6页Ecological Science

基　　金：中国水产科学研究院基本科研业务费(2019GH10);中国水产科学研究院科技创新团队项目(2020TD18);国家自然科学基金(31502166)。

摘　　要：为了探究在不同浓度铜(Cu)暴露下背角无齿蚌(Anodonta woodiana)对水体Cu的吸收特征,选定对Cu吸收能力更强的幼蚌作为实验对象,依据Cu对幼蚌96 h-EC50和我国渔业水质标准(GB11607—89)中Cu限量设定5个浓度梯度2.0、1.0、0.1、0.01和0.005 mg·L^(-1),进行24 h Cu暴露实验及水体Cu含量测定。结果显示:随暴露浓度的升高,幼蚌Cu吸收效率迅速升高,最高值出现在2.0 mg·L^(-1)暴露组为(0.69±0.11)μg/(g·h);幼蚌Cu去除率总体呈现出降低趋势,其中0.005 mg·L^(-1)暴露组去除率最高为84.8%,1.0 mg·L^(-1)暴露组去除率最低为28.9%。综上所述,背角无齿蚌幼蚌具有较强的Cu吸收能力,表明其在淡水渔业水域环境Cu污染防控方面以及开发作为监测评价淡水渔业水域环境Cu污染的模式生物方面具有非常高的应用潜力。In order to explore the copper absorption characteristics of Anodonta woodiana,this study was based on the juveniles with higher Cu absorption efficiency as the experimental subjects.Five concentration gradients(2.0,1.0,0.1,0.01 and 0.005 mg·L^(-1))of aquatic Cu were set according to its 96 h-EC50 to the mussels and China Fisheries Water Quality Standard(GB11607-89).This exposure experiment was conducted for 24 h.The results showed that the Cu absorption efficiency increased rapidly with the increase of exposure concentration,and the highest value was(0.69±0.11)μg/(g·h)in 2.0 mg·L^(-1) exposure group.However,the Cu removal rate showed a general decreasing trend,in which the removal rate of 0.005 mg·L^(-1) exposure group was the highest 84.8%,and the removal rate of 1.0 mg·L^(-1) exposure group was the lowest 28.9%.In conclusion,the high Cu uptake efficiency of juvenile A.woodiana indicates that it has a very high application potential in the prevention and control of heavy metal Cu pollution in freshwater fishery waters and in the development of model organisms for monitoring and evaluating the environmental Cu pollution in freshwater fishery waters.

关 键 词：背角无齿蚌 铜 吸收效率 去除率 

分 类 号：S959[农业科学—水产养殖]