Individual and combined acute toxicity of nanoparticles exposed to brackish water fish pearl spot (Etroplus suratensis)

Abstract

: The aim of present study was to evaluation the acute toxicological effects of nanoparticles (NPs) (Titanium dioxide and Silicon dioxide) individual and combined form. The group of fingerlings of the size 8.0 ± 9cm and weight 15 ± 7 g were selected for study. Three groups of the experimented fish were exposed to different selected concentrations of TiO 2 , SiO 2 and mixture of TiO 2 + SiO 2 nanoparticles. All the exposed fish were daily observed and dead fishes were immediately removed and recorded. The obtained data were statistically analyzed using probit regression method. The LC 50 value at 96 h was found to be 163.32, 129.10 and 83.24 ppm for E. suratensis . The results showed that fish were acutely toxic to nanoparticles after being exposed for a period of 96 hours, which may indicate that fish may be adversely affected by nanoparticle exposure, which in turn may have an impact on the health of the aquatic ecosystem