Rim Ladhar-Chaabouni, EFFECT OF IN VIVO CONTAMINATION BY EFFLUENT FROM PHOSPHATE TREATMENT INDUSTRY ON THE CLAM RUDITAPES DECUSSATUS(2016)SDRP Journal of Earth Sciences & Environmental Studies 1(2)
This study focused on industrial effluent characterization and determination of its effects on the clam Ruditapes decussatus. The analysis results revealed that the effluent having acid pH and high concentrations of some chemicals, comparing to the norms, such as SO42-, NO3-, K+, Mg2+, F and Cd. The effect of the effluent on the clam R. decussatus was reflected by the LT50 determined after an exposition to different doses (5%, 10%, 20%, 30%) during 25 days and by the concentration/activity of two biomarkers: malondialdehyde (MDA) and acetylcholinesterase (AChE) determined after a contamination by effluent (1%) during 16 days. The stress on stress results showed that animals were stressed even with le lowest effluent concentration. An increase of MDA concentrations was observed in digestive glands of exposed clams. Nevertheless, no significant variation of AChE activity was observed.