Author(s): Priya NP, Dr. Remya VK and Krishnaveni MS

Abstract: Heavy metals are one of the important environmental pollutants. The contamination of aquatic environments by heavy metals has become a global problem. Heavy metals have adverse effect on growth and reproduction and cause osmoregulatory stress. Spirulina capable to bound heavy metals of ionic in comparison to macro algae, spirulina has biosorption capacity much higher than micro algae. The work undertaken in the present study mainly centres around the toxic effect of cadmium chloride on the protein, glucose, lipid peroxidation product malondialdehyde and phycoremediation potential of spirulina on Oreochromis mossambicus. The result showed that the fish at spirulina treatment had high amount of protein (13.2±0.224), blood glucose level (0.930±0.408) and low level of malondialdehyde (13.2±0.224) in liver tissue. Cadmium treated fish had low level of protein, blood glucose. And the amount of cadmium is more concentrated in kidney compared with muscles of fish. The result demonstrated that the spirulina can be detoxify the cadmium toxicity in fish.

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