长江江豚锌、铜、铅、镉和砷的摄入与累积

杨健; 尹君; 许海伦; 贡小清; 虞锐鹏; 王丁

长江江豚锌、铜、铅、镉和砷的摄入与累积

杨健^1,2,
尹君³,
许海伦³,
贡小清⁴,
虞锐鹏⁴,
王丁¹

中国科学院水生生物研究所, 武汉 430072
2. 中国水产科学研究院淡水渔业研究中心, 无锡 214081
3. 南京农业大学无锡渔业学院, 无锡 214081
4. 江南大学分析测试中心, 无锡 214036

基金项目:

中国科学院留学归国人员资金(020102)

创新领域前沿项目(220103)

中国水产科学研究院首席科学家资助项目(1-105011)

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- 收稿日期: 2004-04-14
- 修回日期: 2005-05-09
- 发布日期: 2005-09-24

THE INGESTION AND ACCUMULATION OF ZINC, COPPER, LEAD,CADMIUM AND ARSENIC IN THE YANGTZE FINLESS PORPOISE,NEOPHOCAENA PHOCAENOIDES ASIAEORIENTALIS

Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072;
2. Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences, Wuxi 214081;
3. Wuxi Fisheries College, Nanjing Agriculture Univerisity, Wuxi 214081;
4. Testing & Analysis Center, Southern Yangtze University, Wuxi 214036

摘要

摘要: 根据室内饲养的3头长江江豚(Neophocaena phocaenoides asiaeorientalis)食物鲫(Carassius auratus)中锌(Zn)、铜 (Cu)、铅(Pb)、镉(Cd)、砷(As)的浓度值和饲养记录,推算出了饲养条件下江豚这些微量元素每日及每周估计摄入量的范围。必需元素的需求方面与世界卫生组织/联合国粮农组织(WHO/FAO)提出的人暂定每周耐受摄人量 (PTWI)相类似,可是毒性较强的元素Cd、As、Pb的摄入量大大高于人体的PTWI。对湖北天鹅洲故道收集到的一头江豚的10种组织、器官的研究发现,摄入后的Zn、Cu、Pb、Cd、As显示出有组织、器官选择性累积的倾向。这可能主要与鲸类组织、器官对相应的元素有特殊的要求相关。本研究的结果还显示出有必要建立饲养鲸类动物食物安全管理规范以控制食源污染。更深入地研究各组织、器官中微量元素与生命机能的关系,应该是鲸类动物微量元素的营养化学和生态毒理学发展的重要方向之一。
- 长江江豚 /
- 锌 /
- 铜 /
- 铅 /
- 镉 /
- 砷 /
- 摄入 /
- 积累
Abstract: Estimated daily and weekly intakes of trace element for 3 captive Yangtze finless porpoises were calculated, based on the rearing records and concentration of zinc (Zn), copper (Cu), lead (Pb), cadmium (Cd) and arsenic (As) in food crucian carp ( Carassius auratus ) in Institute of Hydrobiology, the Chinese Academy of Sciences. Ranges of the estimated daily intakes of trace element studied per porpoise were 21.7 - 49.52 mg for Zn, 1.91 -2.98 mg for Cu,0.21 -3.98 mg for Pb,0.04-0.20 mg for Cd and 0.39-0.99 mg for As. The estimated weekly intakes calculated of essential Cu, Zn were similar to Provisional Tolerance Weekly Intake (PTWI) for human (suggested by WHO/FAO). However, those of highly toxic Pb, Cd and As were much more than the PTWI of human. Also, the distribution patterns and levels of these trace elements were ascertained in a Yangtze finless porpoise died accidentally in Tian-e-zhou water in Hubei province. Tendency of tissue or organ specific accumulation of studied elements was found in finless porpoise, such as in the liver for Cu (50.7μg/g dry weight) and As (0.80μg/g dry weight), the skin for Zn (579μg/g dry weight) and the kidney for Cd (7.7μg/g dry weight) . Special requirement for corresponding elements may mainly contribute to this tendency, rather than the difference between fresh water and marine environment. Our study suggests that the food safety criterion for captive cetaceans (especially in aquariums) is necessary for controlling the contamination of pollutants from food sources. Further study on the relation between trace element and life function should be one of most important field for the development of cetacean nutritional chemistry and ecological toxicology.
- The Yangtze finless porpoise /
- Ingestion /
- Accumulation /
- Zinc /
- Copper /
- Lead /
- Cadmium /
- Arsenic

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参考文献(13)

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长江江豚锌、铜、铅、镉和砷的摄入与累积

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THE INGESTION AND ACCUMULATION OF ZINC, COPPER, LEAD,CADMIUM AND ARSENIC IN THE YANGTZE FINLESS PORPOISE,NEOPHOCAENA PHOCAENOIDES ASIAEORIENTALIS

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