Assessment of genotoxicity of coastal waters of central Chile on fishes Mugil cephalus and Odontesthes brevianalis

Authors

  • Hernán Gaete Olivares Instituto de Ciencias Ambientales. Universidad de Valparaíso. Av. Gran Bretaña 1111, Playa Ancha, Valparaíso, Chile. Centro de Investigación y Gestión de Recursos Naturales (CIGREN)
  • Rosa Guerra Muñoz Instituto de Biología 3 Centro de Investigación y Gestión de Recursos Naturales (CIGREN)
  • Diana Carvajal Vásquez Instituto de Ciencias Ambientales. Universidad de Valparaíso. Av. Gran Bretaña 1111, Playa Ancha, Valparaíso, Chile
  • Macarena Mukarker Valladares Instituto de Ciencias Ambientales. Universidad de Valparaíso. Av. Gran Bretaña 1111, Playa Ancha, Valparaíso, Chile
  • Gabriela Lobos Valenzuela Centro de Investigación y Gestión de Recursos Naturales (CIGREN). Instituto de Química y Bioquímica, Facultad de Ciencias.

Keywords:

Anthropogenic residues, comet assay, heavy metals, micronuclei.

Abstract

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.

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Published

2017-01-03

How to Cite

Gaete Olivares, H., Guerra Muñoz, R., Carvajal Vásquez, D., Mukarker Valladares, M., & Lobos Valenzuela, G. (2017). Assessment of genotoxicity of coastal waters of central Chile on fishes Mugil cephalus and Odontesthes brevianalis. HIDROBIOLÓGICA, 24(3), 271–279. Retrieved from https://hidrobiologica.izt.uam.mx/index.php/revHidro/article/view/606

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