| Comparative Studies on Uptake Pathway of Cadmium by Perna viridis |
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| 作者姓名： | FANG Zhanqiang |
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| 作者单位： | College of Life Sciences, South China Normal University, Guangzhou 510631, P. R. China |
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| 基金项目： | Acknowledgements The financial support from the City University of Hong Kong is gratefully acknowledged. |
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| 摘 要： | Experiments were designed to expose the filter-feeding bivalve Perna viridis to different Cd-contaminated water environments in order to compare the different pathways through which Cd is accumulated. Results show that mussels can accumulate Cd through seawater, food, sediment and suspended particle pathways in a short period of time. Mussels＇ uptake of Cd through the seawater pathway reaches the highest concentration approximately 3 and 9 times larger than through the algae and sediment pathways respectively after 7 d. This indicates that the Cd-accumulation through seawater is most efficient. Results also indicate that the uptake directly through contaminated algae, particles or sediments ingested by mussels is less important when compared with the uptake of Cd by mussels through the seawater pathway. Metal uptake pathways and mechanisms of bioaccumulation by marine bivalve are also discussed in this paper.
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| 关 键 词： | 摄取路径 生物积累 镉 翠绿色 重金属 海洋污染 |
| 收稿时间： | 2005-03-07 |
| 修稿时间： | 2005-10-26 |
Comparative studies on uptake pathway of cadmium byPerna viridis |
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| FANG Zhanqiang.Comparative Studies on Uptake Pathway of Cadmium by Perna viridis[J].Journal of Ocean University of China,2006,5(1):49-54. |
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| Authors: | Fang Zhanqiang |
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| Institution: | College of Life Sciences, South China Normal University, Guangzhou 510631, P .R .China |
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| Abstract: | Experiments were designed to expose the filter-feeding bivalve Perna viridis to different Cd-contaminated water environments in order to compare the different pathways through which Cd is accumulated. Results show that mussels can accumulate Cd through seawater, food, sediment and suspended particle pathways in a short period of time. Mussels' uptake of Cd through the seawater pathway reaches the highest concentration approximately 3 and 9 times larger than through the algae and sediment pathways respectively after 7d. This indicates that the Cd-accumulation through seawater is most efficient. Results also indicate that the uptake directly through contaminated algae, particles or sediments ingested by mussels is less important when compared with the uptake of Cd by mussels through the seawater pathway. Metal uptake pathways and mechanisms of bioaccumulation by marine bivalve are also discussed in this paper. |
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| Keywords: | uptake pathway bioaccumulation cadmium Perna viridis |
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