池塘养殖及野外移殖三角帆蚌元素积累的差异  

Difference in Element Bioaccumulation Between Farmed and Field-Transplanted Hyriopsis cumingii

作　　者：刘洪波[1] 尤洋[1] 戈贤平[1] 杨健[1] 

机构地区：[1]中国水产科学研究院内陆渔业环境与资源重点开放实验室/中国水产科学研究院淡水渔业研究中心,江苏无锡214081

出　　处：《生态与农村环境学报》2009年第2期107-112,共6页Journal of Ecology and Rural Environment

基　　金：国家科技支撑计划(2006BAD03B09);江苏省自然科学基金(BK2006030);中央级公益性科研院所基本科研业务费专项资金(6-115007)

摘　　要：以从湖北公安养殖池塘移殖到三峡库区童庄河自然水域试养1a和仍在原池塘养殖的同1批次三角帆蚌(Hyriopsis cumingii)为对象,用电感耦合等离子质谱仪测定了2地三角帆蚌软组织中K、Mg、Ca、Fe、Zn、Mn、Cu、As、Al、Cr、Ni、Se、Mo、Ag、Cd、Ti、Pb17种元素的含量。结果表明,虽然2水域中三角帆蚌软组织内各元素含量间的高低差异具有相似的趋势,体现了三角帆蚌对元素积累的特征,但自然水域蚌中有9种元素的水平高于养殖水域,提示不同栖息环境背景对元素的积累水平能产生重要影响。自然水域单个三角帆蚌体内软组织中元素积累的平均负荷量普遍高于养殖池塘的个体,提示三角帆蚌具有显著的元素吸收、净化能力。本研究为今后通过大规模移殖双壳贝类来监测自然水域元素污染提供了依据。Comparison in bioaccumulation of trace elements between triangle-sail mussels （Hyriopsis cumingii） reared in aquicuhural ponds in Gongan Country （APG） and in the Tongzhuanghe River, a natural waterbody, in the Three-Gorge Reservoir Region （NWTR） , Hubei Province, China was conducted. The mussels in the latter were relocated from the former. After one year of husbandry, the mussels were sampled for analysis of K, Mg, Ca, Fe, Zn, Mn, Cu, As, A1, Cr, Ni, Se, Mo, Ag, Cd, Ti and Pb in their soft tissues, using an Inductively Coupled Plasma Mass Spectrometry. Although the 17 elements in these two groups of mussels followed a similar order in concentration, reflecting characteristics of bioaccumulation of the elements by the mussels, those in NWTR were higher than in APG in concentration of 9 elements （ Ca, Mg, Cu, Mn, Zn, Cr, As, Cd and Pb）, suggesting that living habitats may have an important impact on bioaccumulation in Hyriopsis cumingii. The mussels in the natural waterbody were exposed to a higher mean load of the elements in their soft tissues than those in the ponds, demonstrating the mussels＇ significant capacity of sequestrating those pollutant elements and purifying waterbodies. The findings of the study may serve as scientific basis for rearing freshwater mussel to monitor pollutant elements in natural waterbodies and purify the environment therein.

关 键 词：三角帆蚌 元素 生物积累 移殖 环境监测 

分 类 号：X835[环境科学与工程—环境工程]