Environmental risk assessment in Lake Yuriria, Mexico, by integrated biomarker response in Goodea atripinnis, a viviparous fish

The aim of this study was to analyze the effetcs of the mixture of pollutants from Lake Yuriria and their tributaries on the set of biomarkers in liver, muscle and gill of the fish Goodea atripinnis measuring the enzymatic activities of alkaline phosphatase, gamma glutamyltranspeptidase, alanino aminotransferase, acerylcholinesterase, the leve! of lipid peroxidation, proteins and glycogen content. The response of the biomarker bartery was represented by the lntegrated Biomarker Response index (IBR). The test organisms were exposed under static conditions for 96 h to water from Lake Yuriria and its tributaries and the response of their biomarkers and IBR were compared wirh a control group maintained in unpolluted water. The IBR assessment from different sites showed than tributaries exert high impact in the fish studied . These effects could impair the capacity of an organism to respond to its environment and may affect its reproductive output. Thus the population sustainability of Goodea atripirmis in Yuriria Lake could be affected .