Monferrán Magdalena Victoria, Galanti Lucas Nicolás, Bonansea Rocío Inés, Amé María Valeria, Wunderlin Daniel Alberto
Universidad Nacional de Córdoba-CONICET, Secretaría de Ciencia y Técnica, Instituto Superior de Investigación Desarrollo y Servicios en Alimentos, Av Juan Filloy, Ciudad Universitaria, 5000 Córdoba, Argentina.
J Environ Monit. 2011 Feb;13(2):398-409. doi: 10.1039/c0em00545b. Epub 2010 Dec 13.
We report a combined two-year seasonal monitoring of Suquía River basin using both chemical parameters and biomarkers measured in Jenynsia multidentata, aiming to correlate external levels of contaminants with the response of oxidative stress biomarkers in this fish. Identified pollution sources correspond to city sewage as well as agricultural and small industry activities downstream from Córdoba city. Physicochemical parameters integrated into a water quality index (WQI) were measured in Suquía River during dry and wet seasons. Ag, Mn, Cu, Cr, Ni, Fe, Pb and Zn were also monitored in water and sediment samples. Biomarkers include detoxication and antioxidant enzymes: catalase (CAT), glutathione peroxidase (GPX), glutathione S-transferase (GST) and glutathione reductase (GR). Enzymes showed a pollution dependent response, with increased activities in fish collected close to the sewage exit and progressive drop further downstream, matching changes in the Water Quality index. The combined use of biomarkers with water quality parameters allowed both the identification of pollution sources and the evaluation of effects of contaminants on the aquatic biota.
我们报告了一项对苏基亚河流域进行的为期两年的综合季节性监测，该监测使用了化学参数以及在多齿珍妮丽鱼中测量的生物标志物，旨在将污染物的外部水平与这种鱼类氧化应激生物标志物的反应相关联。已确定的污染源对应于城市污水以及科尔多瓦市下游的农业和小型工业活动。在旱季和雨季对苏基亚河进行了综合纳入水质指数（WQI）的物理化学参数测量。还对水和沉积物样本中的银、锰、铜、铬、镍、铁、铅和锌进行了监测。生物标志物包括解毒和抗氧化酶：过氧化氢酶（CAT）、谷胱甘肽过氧化物酶（GPX）、谷胱甘肽S-转移酶（GST）和谷胱甘肽还原酶（GR）。酶呈现出与污染相关的反应，在靠近污水排放口采集的鱼类中酶活性增加，而在更下游处则逐渐下降，这与水质指数的变化相匹配。生物标志物与水质参数的联合使用既能够识别污染源，又能够评估污染物对水生生物群的影响。
