Department of Chemical Oceanography, School of Marine Sciences, Cochin University of Science and Technology, Cochin, Kerala, India,
Environ Monit Assess. 2013 Dec;185(12):10317-31. doi: 10.1007/s10661-013-3334-9. Epub 2013 Jul 7.
Trace metal concentrations in the muscle of the bivalve Villorita cyprinoides from the Cochin backwaters (southwest coast of India) were investigated during the monsoon, post-monsoon and pre-monsoon periods. The seasonal average ranges of metals (μg g(-1), dry weight) in the bivalve were as follows: Fe (18,532.44-28,267.05), Co (23.25-37.58), Ni (10.56-19.28), Cu (3.58-11.35), Zn (48.45-139.15), Cd (1.06-1.50) and Pb (3.05-4.35). The marginally elevated metal concentrations in bivalve muscles are probably related to high influx of metals as a result of pollution from the industries and agricultural fields with consequent increased bioavailability of metals to the bivalve. Evaluation of the risks to human health associated with consumption of the bivalves suggested that there is no health risk for moderate shellfish consumers. A regular and continuous biomonitoring program is recommended to establish V. cyprinoides as a bioindicator for assessing the effects of trace metal pollution and to identify future changes to conserve the "health" of this fragile ecosystem.
在季风、季风后和前季风期间，调查了印度西南海岸高知泻湖（Cochin backwaters）双壳贝类 Villorita cyprinoides 肌肉中的痕量金属浓度。双壳贝类金属（μg g(-1)，干重）的季节性平均范围如下：Fe（18,532.44-28,267.05）、Co（23.25-37.58）、Ni（10.56-19.28）、Cu（3.58-11.35）、Zn（48.45-139.15）、Cd（1.06-1.50）和 Pb（3.05-4.35）。双壳贝类肌肉中边缘升高的金属浓度可能与污染工业和农田中金属的大量涌入有关，这导致金属对双壳贝类的生物利用度增加。评估与食用双壳贝类相关的人类健康风险表明，对于中等贝类消费者来说，没有健康风险。建议定期和持续进行生物监测计划，以将 V. cyprinoides 确立为评估痕量金属污染影响和识别未来变化以保护这一脆弱生态系统“健康”的生物指标。
