Azevedo Juliana S, Braga Elisabete S, Kuniyoshi Leonardo S, Fávaro Deborah Inês T
Universidade Federal de São Paulo, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Departamento de Ciências Ambientais, Rua São Nicolau, 210, Centro, 09913-030 Diadema, SP, Brazil.
Universidade de São Paulo, Instituto Oceanográfico, Departamento de Oceanografia Química e Geológica, Praça do Oceanográfico, 191, Cidade Universitária, 05508-120 São Paulo, SP, Brazil.
An Acad Bras Cienc. 2023 Feb 17;95(2):e20210033. doi: 10.1590/0001-3765202320210033. eCollection 2023.
The construction of a data bank concerning metal and metalloid content of bioindicator fish from coastal areas is very important as it can help environmental managers in decision making. In natural conditions, the concentration of elements can be influenced by abiotic parameters such as water salinity. In this study, catfish Cathorops spixii were evaluated concerning the total arsenic (As) concentration in the muscle tissues of individuals subjected to different abiotic conditions in the Cananéia-Iguape Estuarine-Lagoon Complex (CIELC), which was recently included on the Ramsar list of wetlands of international importance. Seventy-four catfish were seasonally caught in the northern and southern regions of the CIELC and their hydrochemical parameters were obtained. C. spixii from the southern, best preserved, area showed arsenic concentrations around ten times higher than the maximum limit established for fish intended for human consumption. However, these high concentrations of arsenic could be associated with the abiotic parameters of the water, such as salinity variations, in this area.
建立一个关于沿海地区生物指示鱼类金属和类金属含量的数据库非常重要，因为它可以帮助环境管理者进行决策。在自然条件下，元素的浓度会受到诸如水盐度等非生物参数的影响。在本研究中，对鲶鱼Cathorops spixii在卡纳内阿-伊瓜佩河口-泻湖复合体（CIELC）中不同非生物条件下个体肌肉组织中的总砷（As）浓度进行了评估，该复合体最近被列入具有国际重要性的拉姆萨尔湿地名录。在CIELC的北部和南部地区季节性捕获了74条鲶鱼，并获取了它们的水化学参数。来自南部保存较好地区的C. spixii显示出的砷浓度比为人类消费目的而设定的鱼类最大限量高出约十倍。然而，这些高浓度的砷可能与该地区水盐度变化等水的非生物参数有关。
