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应用生态学报 ›› 2010, Vol. 21 ›› Issue (2): 476-482.

• 研究报告 • 上一篇    下一篇

铅在中华鲟幼鱼不同组织中的积累与排放

冯琳1,2;章龙珍1**;庄平1,2;侯俊利1;张涛1;刘健3;冯广朋1   

  1. 1中国水产科学研究院东海水产研究所农业部海洋与河口渔业重点开放实验室,上海 200090;2上海海洋大学上海高校水产养殖E-研究院, 上海 201306;3上海市长江口中华鲟保护区管理处,上海 200092
  • 出版日期:2010-02-20 发布日期:2010-02-20

Lead accumulation and elimination in juvenile Acipenser sinensis tissues.

FENG Lin1,2|ZHANG Long-zhen1|ZHUANG Ping1,2|HOU Jun-li1|ZHANG Tao1|LIU Jian3|FENG Guang-peng1   

  1. 1Ministry of Agriculture Key Laboratory of Marine and Estuarine Fisheries, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China|2E-Institute of Aquaculture of Shanghai Universities, Shanghai Ocean University, Shanghai 201306,China|3Management Department of Shanghai Yangtze Estuarine Nature Reserve for Chinese Sturgeon, Shanghai 200092, China
  • Online:2010-02-20 Published:2010-02-20

摘要: 采用水溶液静态置换法,研究了中华鲟幼鱼在不同浓度Pb2+溶液(0、0.2、0.8和1.6 mg·L-1)中各组织铅的积累与排放.结果显示:中华鲟幼鱼各组织表现出随暴露浓度升高Pb积累增加的剂量-效应关系; Pb积累的基本模式为:骨(背骨板和软骨)和肌肉中积累量最高; 胃、肠和皮肤次之; 肝、鳃与脊索相对较低.暴露试验结束后进行了为期6周的Pb排放试验,结果表明:低浓度组(0.2 mg·L-1)各组织中Pb含量与对照组无显著差异(P<0.05);中浓度组(0.8 mg·L-1)除鳃胃、软骨和肌肉以外,其余组织的Pb含量均显著高于对照组(P<0.05);高浓度组(1.6 mg·L-1)除肝、肠和皮肤以外,其余组织均显著高于对照组(P<0.05).比较积累与排放发现,低、中浓度组中鳃、皮肤和肝的Pb含量高于积累时.推测中华鲟幼鱼经鳃、皮肤和消化道摄入Pb,主要经鳃和皮肤进行排放.

关键词: 中华鲟, 铅, 暴露, 积累, 排放, 山梨,  , 叶片形态特征, 叶绿素, 光合特征

Abstract: A semi-static test of Pb exposure (0, 0.2, 0.8, and 1.6 mg·L-1) was carried out to examine the Pb accumulation and elimination in different tissues of juvenile Chinese sturgeon (Acipenser sinensis). With increasing Pb concentration in water, the Pb concentration in juvenile A. sinensis tissues in
creased, showing a clear dose-response relationship. The Pb  accumulation had a trend of being higher in bone (dorsalbone plate and artilaginous bone) and muscle, followed by in stomach, intestine, and skin, and relatively low in liver, gill, and notochord. A 6-week duration test after Pb exposure showed that in low dose group (0.2 mg·L-1), the Pb concentration in all tissues had no significant differences to the control group, but in medium dose group (0.8 mg·L-1), the Pb concentration in most tissues except gill stomach, cartilaginous bone, and muscle was significantly higher than the control. In high dose group (1.6 mg·L-1), the Pb concentration in the tissues other than liver, intestine and skin was significantly higher than the control. Through the comparison of accumulation and elimination, it was found that after low- and medium dose exposure, the Pb concentration in skin, gill, and liver was higher than its accumulation, presuming that  Pb was absorbed from gill, skin, and alimentary canal, and eliminated from gill and skin.

Key words: Acipenser sinensis, lead, exposure, accumulation, elimination, wild Ussurian pear, leaf morphological characteristics, chlorophyll, photosynthetic characters.