La Colla Noelia S, Botté Sandra E, Oliva Ana L, Marcovecchio Jorge E
Instituto Argentino de Oceanografía (IADO - CONICET/UNS), Camino La Carrindanga km 7.5, 8000 Bahía Blanca, Argentina.
Instituto Argentino de Oceanografía (IADO - CONICET/UNS), Camino La Carrindanga km 7.5, 8000 Bahía Blanca, Argentina; Departamento de Biología, Bioquímica y Farmacia, Universidad Nacional del Sur, San Juan 670, 8000 Bahía Blanca, Argentina.
Chemosphere. 2017 May;175:286-293. doi: 10.1016/j.chemosphere.2017.02.002. Epub 2017 Feb 1.
Over the last decades the anthropogenic contamination impact has substantially increased in the Bahía Blanca estuarine area, and scarce information exists regarding metals in the biotic compartment of this estuary. Thus, fish tissues were used to evaluate metal accumulation within this aquatic environment. The study focused on the determination of Cr, Pb, Fe and Mn in the gills, liver and muscle tissues of six commercial fish species (Brevoortia aurea, Odontesthes argentinensis, Micropogonias furnieri, Cynoscion guatucupa, Mustelus schmitti and Paralichthys orbignyanus). From the results it can be summarized that C. guatucupa tends to accumulate higher metal levels in the liver tissues, mostly Cr and Fe, than the other studied species. O. argentinensis and P. orbignyanus, both permanent inhabitants of the BBE, achieved the highest metal values in the gill tissues, mostly in comparison to M. schmitti. The gill tissues were found to be the main organ of Mn and Ni accumulation for most species, whereas in general, minimum concentrations were found for all the analyzed metals in the muscle tissues. Nevertheless, and according to the guidelines, all fish species showed at least one sample with concentrations of Mn and/or Cr above the permissible levels for human consumption. Finally, it was highlighted the usefulness of selecting these fish species as bioindicators of metal pollution, since they are either permanent inhabitants of the estuary or, according to the sizes under analyses, spend much of their time in this coastal waters.
在过去几十年里，布兰卡湾河口地区的人为污染影响显著增加，而关于该河口生物区金属的信息却很少。因此，利用鱼类组织来评估这个水生环境中的金属积累情况。该研究集中于测定六种商业鱼类（金色宝刀鱼、阿根廷油鲱、细纹狮子鱼、瓜图库帕犬牙石首鱼、施氏鼬鲨和奥氏牙鲆）鳃、肝脏和肌肉组织中的铬、铅、铁和锰。从结果可以总结出，与其他研究物种相比，瓜图库帕犬牙石首鱼的肝脏组织往往积累更高水平的金属，主要是铬和铁。阿根廷油鲱和奥氏牙鲆都是布兰卡湾河口的永久居民，它们在鳃组织中的金属含量最高，主要是与施氏鼬鲨相比。发现鳃组织是大多数物种积累锰和镍的主要器官，而一般来说，肌肉组织中所有分析金属的浓度最低。然而，根据指导方针，所有鱼类至少有一个样本中锰和/或铬的浓度高于人类食用的允许水平。最后，强调了选择这些鱼类作为金属污染生物指标的有用性，因为它们要么是河口的永久居民，要么根据分析的大小，大部分时间都在这片沿海水域度过。
