title: Integrated survey of water pollution in the Suquía River basin (Córdoba, Argentina).
abstract: 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.
authors.affiliation: 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.
authors.forename: Magdalena Victoria
authors.initials: MV
authors.lastname: Monferrán
authors.forename: Lucas Nicolás
authors.initials: LN
authors.lastname: Galanti
authors.forename: Rocío Inés
authors.initials: RI
authors.lastname: Bonansea
authors.forename: María Valeria
authors.initials: MV
authors.lastname: Amé
authors.forename: Daniel Alberto
authors.initials: DA
authors.lastname: Wunderlin
mesh_terms: D000818:Animals; D001118:Argentina; D003532:Cyprinodontiformes / Q000378:metabolism*; D004784:Environmental Monitoring; D008670:Metals / Q000032:analysis*; D018384:Oxidative Stress; D045483:Rivers / Q000737:chemistry*; D012621:Seasons; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014876:Water Pollution / Q000032:analysis*
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical