Azevedo J S, Serafim A, Company R, Braga E S, Fávaro D I, Bebianno M J
Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico, 191, Sao Paulo, Brazil.
Ecotoxicology. 2009 Nov;18(8):1001-10. doi: 10.1007/s10646-009-0370-x. Epub 2009 Jul 15.
Biomarkers as lipid peroxidation, metallothionein and delta-aminolevulinic acid dehydratase were determined in Cathorops spixii to compare the biological responses of this fish from estuaries with distinct anthropogenic influence. Three areas were selected in two estuaries in accordance with the levels of contamination for the polluted (Santos/São Vicente) and with the hydrodynamic characteristics for the non-polluted (Cananéia) estuary. Water characteristics and mercury levels in C. spixii confirmed a high human influence in the polluted system. In general, the biomarkers showed differences between the estuaries, suggesting disturbances in the specific cell mechanisms due to the presence of multiple xenobiotics in the contaminated system. Therefore, these biomarkers are recommended to promote more accurate information about the exposure to pollutants. Additionally, the study of the effect of the multiple xenobiotics on resident species such as the benthic fish C. spixii can favor a better assessment of the environmental quality of these systems.
在斯氏新须鲇中测定了脂质过氧化、金属硫蛋白和δ-氨基乙酰丙酸脱水酶等生物标志物，以比较来自受不同人为影响河口的这种鱼类的生物学反应。根据污染程度，在两个河口选择了三个区域，其中一个区域受污染（桑托斯/圣维森特），另一个区域根据非污染河口（卡纳内亚）的水动力特征进行选择。斯氏新须鲇体内的水质特征和汞含量证实了受污染系统受到了高度的人类影响。总体而言，生物标志物在不同河口之间存在差异，这表明受污染系统中多种外源生物的存在干扰了特定的细胞机制。因此，建议使用这些生物标志物来获取有关污染物暴露的更准确信息。此外，研究多种外源生物对底栖鱼类斯氏新须鲇等本地物种的影响，有助于更好地评估这些系统的环境质量。
