National Institute of Oceanography (CSIR), Regional Centre, Cochin, India.
Environ Toxicol. 2010 Dec;25(6):622-33. doi: 10.1002/tox.20544.
Trace metal (Fe, Co, Ni, Cu, Zn, Cd, and Pb) concentrations in zooplankton from the mixed layer were investigated at 8 coastal and 20 offshore stations in the western Bay of Bengal during the summer monsoon of 2003. The ecotoxicological importance of trace metal uptake was apparent within the Bay of Bengal zooplankton. There was a distinct spatial heterogeneity of metals, with highest concentrations in the upwelling zones of the southeast coast, moderate concentrations in the cyclonic eddy of the northeast coast, and lowest concentrations in the open ocean warm gyre regions. The average trace metal concentrations (μg g⁻¹) in coastal zooplankton (Fe, 44894.1 ± 12198.2; Co, 46.2 ± 4.6; Ni, 62.8 ± 6.5; Cu, 84.9 ± 6.7; Zn, 7546.8 ± 1051.7; Cd, 46.2 ± 5.6; Pb, 19.2 ± 2.6) were higher than in offshore zooplankton (Fe, 3423.4 ± 681.6; Co, 19.5 ± 3.81; Ni, 25.3 ± 7.3; Cu, 29.4 ± 4.2; Zn, 502.3 ± 124.3; Cd, 14.3 ± 2.9; Pb, 3.2 ± 2.0). A comparison of average trace metal concentrations in zooplankton from the Bay of Bengal showed enrichment of Fe, Co, Ni, Cu, Zn, Cd, and Pb in coastal zooplankton may be related to metal absorption from primary producers, and differences in metal concentrations in phytoplankton from coastal waters (upwelling zone and cyclonic eddy) compared with offshore waters (warm gyre). Zooplankton showed a great capacity for accumulations of trace metals, with average concentration factors of 4 867 929 ± 569 971, 246 757 ± 51 321, 337 180 ± 125 725, 43 480 ± 11 212, 1 046 371 ± 110 286, 601 679 ± 213 949, and 15 420 ± 9201 for Fe, Co, Ni, Cu, Zn, Cd, and Pb with respect to dissolved concentrations in coastal and offshore waters of the Bay of Bengal. © 2009 Wiley Periodicals, Inc. Environ Toxicol, 2009.
在 2003 年夏季季风期间，在孟加拉湾西部的 8 个沿海站和 20 个近海站调查了混合层中浮游动物中的痕量金属（Fe、Co、Ni、Cu、Zn、Cd 和 Pb）浓度。痕量金属摄取的生态毒理学重要性在孟加拉湾浮游动物中显而易见。金属具有明显的空间异质性，东南海岸的上升流区浓度最高，东北海岸的气旋性涡旋区浓度适中，开阔海域暖旋流区浓度最低。沿海浮游动物（Fe，44894.1±12198.2μg/g；Co，46.2±4.6μg/g；Ni，62.8±6.5μg/g；Cu，84.9±6.7μg/g；Zn，7546.8±1051.7μg/g；Cd，46.2±5.6μg/g；Pb，19.2±2.6μg/g）的平均痕量金属浓度高于近海浮游动物（Fe，3423.4±681.6μg/g；Co，19.5±3.81μg/g；Ni，25.3±7.3μg/g；Cu，29.4±4.2μg/g；Zn，502.3±124.3μg/g；Cd，14.3±2.9μg/g；Pb，3.2±2.0μg/g）。与孟加拉湾浮游动物的平均痕量金属浓度相比，沿海浮游动物中 Fe、Co、Ni、Cu、Zn、Cd 和 Pb 的富集可能与从初级生产者吸收金属有关，而沿海水域（上升流区和气旋性涡旋）与近海水域（暖旋流）的浮游植物中金属浓度的差异有关。浮游动物对痕量金属的积累能力很强，其平均浓度因子分别为 Fe：4867929±569971、Co：246757±51321、Ni：337180±125725、Cu：43480±11212、Zn：1046371±110286、Cd：601679±213949 和 Pb：15420±9201，分别对应于孟加拉湾沿海和近海水中的溶解浓度。©2009 年 Wiley 期刊，环境毒理学，2009 年。
