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Distribution and concentration of trace metals in tissues of pelagic and demersal fishes from the coastal waters of cochin
Environmental Forensics ( IF 1.5 ) Pub Date : 2021-04-10 , DOI: 10.1080/15275922.2021.1907820
Rejomon George 1 , Abraham Biju 2 , G.D. Martin 3 , Vijay John Gerson 4
Affiliation  

Abstract

Accumulation of trace metals in the tissues (muscle, gill and liver) of pelagic fishes (Sardinella longiceps, Rastrelliger kanagurta, and Lates calcarifer) and demersal fishes (Cyanoglossus macrostomus, Caranx melampygus, and Nemipterus japonicus) of the coastal waters of Cochin were quantified during the monsoon, post-monsoon and pre-monsoon seasons. The seasonal ranges of metal concentrations in the muscle, gill and liver of fishes were as follows: Fe (445.15 to 817.85 µg/g, 503.85 to 940.56 µg/g, and 578.75 to 1144.85 µg/g); Co (6.18 to 17.18 µg/g, 7.46 to 24.28 µg/g, and 10.65 to 41.65 µg/g); Ni (8.66 to 18.25 µg/g, 12.56 to 41.17 µg/g, and 21.75 to 106.46 µg/g); Cu (2.75 to 5.38 µg/g, 9.06 to 29.05 µg/g, and 17.57 to 43.27 µg/g); Zn (38.35 to 99.25 µg/g, 65.96 to 197.95 µg/g, and 100.48 to 431.67 µg/g); Cd (1.45 to 7.56 µg/g, 1.96 to 13.37 µg/g, and 2.45 to 23.36 µg/g); and Pb (1.57 to 4.88 µg/g, 1.75 to 8.67 µg/g, and 2.48 to 12.85 µg/g). Distinctive species-specific and organ-specific bio-accumulation patterns of trace metals loads were apparent for both the pelagic and demersal fishes for the region. A comparison of trace metal levels in fish organs revealed that the liver appears to be the main target tissue for trace metal storage than gill, while the muscle had the lowest levels of metals. The elevated accumulation of metals in fish tissues is most likely related to the high influx of metals in the Cochin coast due to pollution from anthropogenic wastes on land that were discharged through rivers. Bio-accumulation data on trace metals in fish organs may be helpful in forensic investigations for tracing contaminant sources and their dispersal pathways in oceanic environments.



中文翻译:

科钦近海中上层和底栖鱼类组织中微量金属的分布和浓度

摘要

中上层鱼类( Sardinella longiceps、Rastrelliger kanagurtaLates calcarifer)和底栖鱼类(Cyanoglossus macrostomus、Caranx melampygusNemipterus japonicus)组织(肌肉、鳃和肝脏)中的微量金属积累) 的科钦沿海水域在季风、季风后和季风前的季节进行了量化。鱼类肌肉、鳃和肝脏中金属浓度的季节变化范围如下:Fe(445.15~817.85 µg/g、503.85~940.56 µg/g、578.75~1144.85 µg/g);Co(6.18 至 17.18 µg/g、7.46 至 24.28 µg/g 和 10.65 至 41.65 µg/g);Ni(8.66 至 18.25 µg/g、12.56 至 41.17 µg/g 和 21.75 至 106.46 µg/g);铜(2.75 至 5.38 µg/g、9.06 至 29.05 µg/g 和 17.57 至 43.27 µg/g);锌(38.35 至 99.25 µg/g、65.96 至 197.95 µg/g 和 100.48 至 431.67 µg/g);镉(1.45 至 7.56 µg/g、1.96 至 13.37 µg/g 和 2.45 至 23.36 µg/g);和 Pb(1.57 至 4.88 µg/g、1.75 至 8.67 µg/g 和 2.48 至 12.85 µg/g)。该地区的中上层鱼类和底层鱼类都具有明显的物种特异性和器官特异性微量金属负载生物积累模式。对鱼类器官中微量金属含量的比较表明,肝脏似乎是比鱼鳃储存微量金属的主要目标组织,而肌肉的金属含量最低。鱼类组织中金属积累的增加很可能与科钦海岸的金属大量流入有关,这是由于通过河流排放的陆地上人为废物造成的污染。鱼类器官中痕量金属的生物积累数据可能有助于法医调查,以追踪海洋环境中的污染物来源及其扩散途径。对鱼类器官中微量金属含量的比较表明,肝脏似乎是比鱼鳃储存微量金属的主要目标组织,而肌肉的金属含量最低。鱼类组织中金属积累的增加很可能与科钦海岸的金属大量流入有关,这是由于通过河流排放的陆地上人为废物造成的污染。鱼类器官中痕量金属的生物积累数据可能有助于法医调查,以追踪海洋环境中的污染物来源及其扩散途径。对鱼类器官中微量金属含量的比较表明,肝脏似乎是比鱼鳃储存微量金属的主要目标组织,而肌肉的金属含量最低。鱼类组织中金属积累的增加很可能与科钦海岸的金属大量流入有关,这是由于通过河流排放的陆地上人为废物造成的污染。鱼类器官中痕量金属的生物积累数据可能有助于法医调查,以追踪海洋环境中的污染物来源及其扩散途径。鱼类组织中金属积累的增加很可能与科钦海岸的金属大量流入有关,这是由于通过河流排放的陆地上人为废物造成的污染。鱼类器官中痕量金属的生物积累数据可能有助于法医调查,以追踪海洋环境中的污染物来源及其扩散途径。鱼类组织中金属积累的增加很可能与科钦海岸的金属大量流入有关,这是由于通过河流排放的陆地上人为废物造成的污染。鱼类器官中痕量金属的生物积累数据可能有助于法医调查,以追踪海洋环境中的污染物来源及其扩散途径。

更新日期:2021-04-10
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