Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry-LABCAI, Federal University of Santa Catarina, UFSC, Florianópolis, SC 88034-257, Brazil.
Aquaculture Pathology Research Center-NEPAQ, Federal University of Santa Catarina, UFSC, Florianópolis, SC 88034-257, Brazil.
Mar Pollut Bull. 2024 Apr;201:116244. doi: 10.1016/j.marpolbul.2024.116244. Epub 2024 Mar 14.
The discharge of sanitary sewage into the bays of the Florianópolis Metropolitan Area (Southern Brazil), has led to the contamination of oyster farms. Consequently, linear alkylbenzenes (LABs) were quantified in the sediment, and the biochemical responses in gills and digestive gland of oysters from six farms were assessed. Our findings revealed elevated levels of LABs in the sediment of the Imaruim and Serraria farms. Additionally, alterations were observed in the antioxidant enzymes: catalase, glutathione peroxidase and superoxide dismutase in both oyster tissue from the Serraria, Santo Antonio de Lisboa and Sambaqui farms. Furthermore, correlation analyses indicated strong and moderate associations between biochemical responses, organic contaminants, and certain physicochemical parameters. Consequently, our results demonstrated the activation of the antioxidant system in oysters, representing a protective response to the presence of sanitary sewage and other contaminants. Therefore, we propose the utilization of biochemical biomarkers for monitoring the environmental quality of farms.
圣安娜湾和伊马茹伊湾的污水排放导致了圣卡塔琳娜州弗洛里亚诺波利斯大都市区（巴西南部）牡蛎养殖场的污染。因此，本研究对六个牡蛎养殖场的沉积物中线性烷基苯（LABs）进行了定量分析，并评估了牡蛎鳃和消化腺中的生化反应。我们的研究结果表明，伊马茹伊湾和塞拉利亚湾养殖场的沉积物中存在高水平的 LABs。此外，在塞拉利亚湾、圣安东尼奥德利兹博和桑巴奎湾牡蛎养殖场的牡蛎组织中，抗氧化酶（过氧化氢酶、谷胱甘肽过氧化物酶和超氧化物歧化酶）的活性也发生了改变。此外，生化反应与有机污染物和某些理化参数之间存在强烈和中度的相关性分析。因此，我们的研究结果表明，牡蛎体内抗氧化系统被激活，这是对存在污水和其他污染物的一种保护反应。因此，我们建议使用生化生物标志物来监测养殖场的环境质量。
