WATER QUALITY AND GENOTOXICITY IN FISH SUBMITTED TO THE WATERS OF THE CAVEIRAS RIVER IN OUTLOOK AREAS OF THE GUARANI HEREFER

• DOI: 10.22533/at.ed.973322310029

• Palavras-chave: Recharge, Contamination, Jundiá, Micronucleus Test and Comet Assay.

• Keywords: Recharge, Contamination, Jundiá, Micronucleus Test and Comet Assay.

• Abstract:

  The water quality of confined aquifers, such as the Guarani, depends on the geological matrix that contains it and the quality of the recharge. Outcrop areas need attention, especially when close to potentially polluting urban centers or industrial complexes. This work evaluated DNA damage in fish of the species: Rhamdia quelen, submitted to the waters of the Caveiras River in areas of upwelling of the Guarani Aquifer. The physical-chemical and microbiological analyzes evaluated samples from five different points of the river. For the genotoxic analyses, the fish were exposed to water at one point, at different times. Genotoxicity was evaluated by the Micronucleus Test and Comet Assay techniques. Statistical analysis was performed using the non-parametric Kruskal-Wallis analysis of variance (p<0.05). The results of water analysis and genotoxicity indicate an accelerated process of degradation of the Caveiras River in the region in contact with the outcrop of the Guarani Aquifer, after the urban contribution.