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ACUTE TOXICITY STUDIES OF CADMIUM CHLORIDE ON BLOOD CLAM Anadara rhombea

. R. Rajalakshmi1 M. Sukumaran* and M. Soundararajan# 1Research Schloar *Research Supervisor, #Assistant Professor P.G. & Research Department of Zoology, Rajah Serfoji Govt. College (Autonomous) (Affiliated to Bharathidasan University),Thanjavur â€


Abstract

Heavy metals can accumulate in the tissues of aquatic organisms and cause a range of hazardous effects to all organisms through bio-magnifications. The aim of this study was to investigate the acute toxicity effects of Cadmium chloride on the clam Anadara rhombea.  Clam samples were exposed to different concentrations (10, 40, 60, 80 and 100mg/L) of Cadmium chloride for 96h and their cumulative mortality was calculated in 12 hours intervals. Results were analyzed by SPSS 20 to obtain number of cumulative mortality and lethal concentrations. LC50 of Anadara rhombea at 96hr was 27.478mg/L for Cadmium chloride.  Mortality rate was increased with the increase in metal concentrations and time.

 

Keywords: Anadara rhombea, LC50, Cadmium Chloride, Acute toxicity, Heavy metal pollution.

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