长江口中华鲟幼鱼主要饵料生物体内重金属Cu、Cd和Hg的积累与评价  

Accumulation and evaluation of heavy metals Cu,Cd and Hg in prey species of juvenile Chinese sturgeons(Acipenser Sinensis) in the Yangtze River estuary,China

作　　者：张慧婷[1,2] 庄平[1,2] 章龙珍[1] 侯俊利[1] 张涛[1] 闫文罡[1] 冯广朋[1] 

机构地区：[1]中国水产科学研究所东海水产研究所,农业部海洋与河口渔业资源生态重点开放实验室,上海200090 [2]上海海洋大学水产与生命学院,上海201306

出　　处：《海洋渔业》2011年第2期159-164,共6页Marine Fisheries

基　　金：中央级公益性科研院所基本科研业务费专项资金(中国水产科学研究院东海水产研究所)项目(2007M023);国家自然科学基金重大项目(30490234);上海市长江口中华鲟自然保护区项目(沪鲟保科-20102011)

摘　　要：为评价重金属污染对长江口中华鲟幼鱼生长的影响,在长江口水域采集了日本沼虾(Macrobraohium nipponense)、中国毛虾(Acetes chinensis)、狼牙鳗虾虎鱼(Taenioides rubicundus)、矛尾虾虎鱼(Chaeturichthys stigmatias)、窄体舌鳎(Cynoglossus gracilis)等5种中华鲟幼鱼重要饵料生物,研究了Cu、Cd、Hg3种重金属元素在这些饵料生物体内的积累特征,评价了饵料生物受重金属污染的程度。结果显示,虾类Cu的单项污染指数(Pi)均大于0.5,鱼类Cu的Pi均小于0.5;5种饵料生物Cd和Hg的Pi均大于1。表明它们均不同程度受到重金属污染,虾类的重金属污染程度比鱼类严重。与历史资料比较发现,长江口鱼虾的重金属污染存在加重趋势,重金属污染已对洄游入海的中华鲟幼鱼构成威胁。In order to discuss the different biological absorption of Cu,Cd and Hg,and evaluate them in food organisms for juvenile Acipenser Sinensis in Yangtze estuary,Macrobraohium nipponense,Acetes chinensis,Taenioides rubicundus,Chaeturichthys stigmatias and Cynoglossus gracilis were collected and analyzed.Results showed that,individual pollution index（Pi） of Cu in shrimps was less than 0.5,Pi of Cu in fish was more than 0.5,and Pi of Cd and Hg in all selected prey species were more than 1.This indicated that the 5 selected prey species for juvenile Acipenser Sinensis were all contaminated by heavy metals to different extent.The shrimps were contaminated more seriouslly than fish.Compared with the historical data,the heavy metal pollution of fish in Yangtze estuary showed aggravating trend.Heavy metal pollution has been threatening juvenile Chinese sturgeon which migrate to sea via Yangtze estuary.

关 键 词：长江口 中华鲟幼鱼 重金属 饵料生物 污染评价 

分 类 号：S963.2[农业科学—水产养殖]