Biomarker responses in caged sábalo (Prochilodus lineatus) exposed to untreated sewage effluent

PÉREZ, M.R.; BACCHETTA, C.; ROSSI, A.; CAZENAVE, J.

Chascomús

Jornada; XVI Jornadas de la Sociedad Argentina de Biología; 2014

Sociedad Argentina de Biología

Sewage effluents are the important source of water pollution and fish results vulnerable to them given that they are exposed throughout your life. Oxidative stress-related parameters and putative biomarkers of brain damage were evaluated in caged juveniles P. lineatus exposed for 15 days in the Colastiné River, where untreated domestic wastewater from Santa Fe city is discharged. Fish were caged in 3 sites: upstream, immediately and downstream of effluent discharge. After 15 days, brain of caged fishes exposed to the effluent showed decreased of catalase and acetylcholinesterase activities, relative to up and downstream sites. Also, increased levels of caspase-3 activity were detected in the brain of effluent caged fish which could indicate an induction of apoptosis due to effluents exposition. Lipid peroxidation in brain indicated no differences between fish caged at any of the sites, although high levels were detected in the liver of caged fish exposed immediately of effluent discharge point. Results suggest that exposition sewage effluents can be potentially harmful to the brain.