鲮体内组织和养殖水体中重金属分布及相关性研究
Distribution and Correlation of Heavy Metals in Tissues of Cirrhinusmolitorella and in Culture Pond Suspended Solids and Sediment
投稿时间:2017-02-23  修订日期:2018-01-24
中文关键词:重金属    养殖水体
英文关键词:heavy metal  Cirrhinus molitorella  culture pond power
基金项目:广西科研院所科技研发专项(GXCIT-2014-02)
作者单位E-mail
卢天和 广西水产科学研究院广西 南宁 530021 1394823783@qq.com 
黄光华 .广西水产科学研究院广西 南宁 530021  
马华威 广西水产科学研究院广西 南宁 530021 ma463543285@126.com 
吕敏 广西水产科学研究院广西 南宁 530021  
黄黎明 广西水产科学研究院广西 南宁 530021  
闭显达 广西水产科学研究院广西 南宁 53002  
黎灿宁 .广西梧州水产畜牧试验场广西 梧州 543000  
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中文摘要:
      研究鲮体内组织和养殖水体中重金属分布并进行相关性分析,为鲮生态养殖研究提供基础参考数据。2015-2016年,选取5、7、9和 11月共4个月份,采集鲮养殖池塘内悬浮物、沉积物以及鲮的呼吸树、大肠、小肠、肠内物、纵肌、体壁组织,测定Cr、Hg、Cd、Pb、As、Cu、Ni等7种重金属含量,数据采用软件Origin 7.0分析,显著性差异比较采用ANOVA法和Tukey 多重比较法。结果显示,肠内容物中Cu、Cd、Pb、Cr、Ni、As、Hg含量均最高(P<0.05),范围为0.03~0.73 mg/kg;悬浮物和沉积物的Hg含量在4个月份的分布均差异显著 (P<0.05),在沉积物含量范围为0.01~0.22 mg/kg,在悬浮物含量范围为0.07~1.88 mg/kg,而其他6种重金属含量差异不显著(P>0.05);体壁与肠内容物、肠内容物与悬浮物、悬浮物与沉积物之间的重金属含量均显著相关(P<0.05),相关系数分别为0.893、0.826、0.851。鲮养殖塘内的悬浮物重金属是经过沉降作用逐渐富集到底质,鲮的消化道吸收是其体内重金属积累主要方式,水中悬浮物对鱼肠内重金属污染特征起到了关键作用,鲮养殖水体中生物相与非生物相的重金属含量的分布具有规律性
英文摘要:
      Cirrhinusmolitorella is an important freshwater fish species cultured in southern China and is favored by farmers and customers for its high profit and good flavor. Aquatic product safety has become a concern because the contamination of waters in rivers and culture ponds is intensified by industrial and agricultural production, and extensive in fish culture. Therefore, the study of ecological breeding of C. molitorella is significant for improving the quality and expanding the market consumption of C. molitorella. In this study, the contents of seven heavy metals in the tissues of C. molitorella, and suspended particles and surface sediment of the culture pond were investigated. The correlations between them were analyzed, aiming to explore the mechanism of heavy metal intake by C. molitorella and provide basic reference data for the ecological breeding of C. molitorella. In May, July, September and November of 2015, samples of suspended solids, sediments and C. molitorella were collected in triplicate from the demonstration culture pond of C. molitorella at an aquaculture company in Nanning of Guangxi Province, with 10-20 C. molitorella specimens collected each time. The contents of Cu, Cd, Cr, Pb, Ni, Hg and As in the suspended solids and sediment of the culture pond and tissues of C. molitorella(respiratory tree, large intestine, small intestine, intestinal content, longitudinal muscle and body wall)were determined. The contents of the seven heavy metals in there spiratory tree, large intestine, small intestine, longitudinal muscle and body wall of C. molitorella were not significantly different, but the heavy metal concentration in the intestinal contents were significantly higher than those of other tissues (P <0.05), ranging from 0.03 to 0.73mg/kg (P <0.05).The content of Hg varied significantly among the four months of the investigation (P <0.05), ranging from 0.01-0.22 mg/kgin the sediments and 0.07 - 1.88 mg/kg in the suspended particles, while the concentrations of the other six heavy metals were not significantly different over the four months(P >0.05). The correlations of heavy metal content between the body wall and intestinal contents, the intestinal contents and suspended particles, and suspended particles and sediments were strongly correlated (P<0.05), with correlation coefficients of0.893, 0.826, 0.851, respectively. The movement of heavy metals among different phases can be summarized as follows. Heavy metals in suspended particles are deposited to sediments and absorption in the intestinal tract is the primary route for heavy metal accumulation in C. molitorella. Suspended particles play a key role in the heavy metal contamination of C. molitorella. The regular distribution pattern of heavy metals in biological and non-biological phases provides an important insight for the ecological breeding of C. molitorella.
卢天和,黄光华,马华威,吕敏,黄黎明,闭显达,黎灿宁.2018.鲮体内组织和养殖水体中重金属分布及相关性研究[J].水生态学杂志,39(2):64-69.
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