Toxicological, biochemical and morphophysiological effects of Serjania erecta leaf aqueous extract on Piaractus mesopotamicus

This study was carried out to determine the toxicity and biochemical morphophysiological changes caused by Serjania erecta leaf aqueous extract in pacu (Piaractus mesopotamicus). For acute testing (CL50-4h), juveniles were exposed during 4 h concentrations of 2.5, 12.5, 25, 50, 100, 150 µg mL-1, which added directly water tanks. In control group, animals kept free from extract. CL50-4 estimated at 57.43 mL-1. After exposure extract, highest (P<0.05) glucose concentration lowest plasma sodium level when fish S. 50 Mortality occurred levels higher than μg all died greater 100 addition, this severe histological gills liver with prevalence necrosis (30.2%), fatty degeneration (77.4%) respectively. At tested here, causes morphofunctional alterations species.