Profile of micronucleus frequencies and DNA damage in different species of fish in a eutrophic tropical lake

Lake Paranoá is a tropical reservoir for the City of Brasilia, which became eutrophic due to inadequate sewage treatment associated with intensive population growth. At present, two wastewater treatment plants are capable of processing up to 95% of the domestic sewage, thereby successfully reducing eutrophization. We evaluated both genotoxic and cytotoxic parameters in several fish species ( Geophagus brasiliensis , Cichla temensis , Hoplias malabaricus , Astyanax bimaculatus lacustres , Oreochromis niloticus , Cyprinus carpio and Steindachnerina insculpita ) by using the micronucleus...