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Olivares H.G.,University of Valparaíso | Olivares H.G.,Research Center stion Of Recursos Naturales Cigren | Munoz R.G.,Institute Biologia | Vasquez D.C.,University of Valparaíso | And 3 more authors.
Hidrobiologica | Year: 2014

The aim of this research was to evaluate the genotoxicity of the surface waters of mouths of the rivers Aconcagua, Maipo and Catapilco stream on fish Mugil cephalus and Odontesthes brevianalis. In the waters of these rivers and stream in situ, the parameters pH, conductivity, dissolved oxygen, total dissolved solids were measured. The concentration of copper, zinc and lead were measured in water and gills tissue. The genotoxicity was determined through the comet assay and micronucleus frequency. The results show that copper concentration in water was higher in the Catapilco stream followed by the Maipo river. The lead concentration was higher in the Maipo river, while that zinc was higher in the Aconcagua river. The zinc concentration in gills was greater than copper and lead in both species. The lead concentration was higher in M. cephalus in the Maipo river, while the copper was in the same species but in the Aconcagua river.. The highest genetic damage was observed in both species of fish of the Maipo River. The lowest genetic damage was in O. brevianalis from Aconcagua river. No relationship was found between genetic damage and concentration of metals in gills. In conclusion the surface waters of the mouths of Aconcagua and Maipo rivers, and Catapilco stream contains chemical agents that provoke genotoxicity in fishes.


Gaete Olivares H.,University of Valparaíso | Gaete Olivares H.,Research Center stion Of Recursos Naturales Cigren | Moyano Lagos N.,University of Valparaíso | Jara Gutierrez C.,University of Valparaíso | And 4 more authors.
Environmental Monitoring and Assessment | Year: 2016

The aim of this study was to evaluate the effect on seaweeds Scytosiphon lomentaria and Ulva rigida of coastal waters of sites with mining activity, using oxidative stress biomarkers and heavy metal determination both in water and in tissue. The greatest bioaccumulation factors in S. lomentaria and U. rigida were founded for iron and arsenic in Quintay. Bioaccumulation factor in S. lomentaria in descending order was Fe> Cu> Zn> Cd> Cr> As> Mo and in U. rigida, in descending order, was Fe> Cu> Cd> Zn> Cr> Mo> As. Both species had higher antioxidant activity levels in areas with high mining activities. The concentration of metals in waters such as copper and arsenic in S. lomentaria, and iron, arsenic, and cadmium in U. rigida were related with oxidative stress biomarkers measured in both species. The use of both species is proposed to monitor the bioavailability and oxidative damage in coastal areas with mining activity. This work will generate a significant knowledge about the impact of mining wastes on macroalgal community in the area of north-central Chile. © 2015, Springer International Publishing Switzerland.


Gaete Olivares H.,University of Valparaíso | Moyano Lagos N.,University of Valparaíso | Jara Gutierrez C.,University of Valparaíso | Carrasco Kittelsen R.,University of Valparaíso | And 3 more authors.
Environmental monitoring and assessment | Year: 2016

The aim of this study was to evaluate the effect on seaweeds Scytosiphon lomentaria and Ulva rigida of coastal waters of sites with mining activity, using oxidative stress biomarkers and heavy metal determination both in water and in tissue. The greatest bioaccumulation factors in S. lomentaria and U. rigida were founded for iron and arsenic in Quintay. Bioaccumulation factor in S. lomentaria in descending order was Fe> Cu> Zn> Cd> Cr> As> Mo and in U. rigida, in descending order, was Fe> Cu> Cd> Zn> Cr> Mo> As. Both species had higher antioxidant activity levels in areas with high mining activities. The concentration of metals in waters such as copper and arsenic in S. lomentaria, and iron, arsenic, and cadmium in U. rigida were related with oxidative stress biomarkers measured in both species. The use of both species is proposed to monitor the bioavailability and oxidative damage in coastal areas with mining activity. This work will generate a significant knowledge about the impact of mining wastes on macroalgal community in the area of north-central Chile.

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