Effect of copper toxicity on the hemolymph factors of the Indian edible oyster, Crassostrea madrasensis (Preston)

Ittoop, Gijo and George, K C and George, Rani Mary and Sobhana, K S and Sanil, N K and Nisha, P C (2009) Effect of copper toxicity on the hemolymph factors of the Indian edible oyster, Crassostrea madrasensis (Preston). Indian Journal of Fisheries , 56 (4). pp. 301-306.

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Abstract

The Indian edible oyster, Crassostrea madrasensis collected from the backwaters of Kochi, India were exposed to three sub-lethal concentrations of copper viz. 0.1, 0.5 and 1 ppm at a salinity of 12 ppt. Modulations in different heamolymph factors such as total hemocyte count, differential hemocyte count, phagocytosis, serum protein, serum acid phosphatase, serum phenol oxidase and serum lysozyme were studied. It was found that, the lowest concentration of copper had a stimulating effect on all the parameters studied. However, at higher concentrations except serum lysozyme all the hemolymph parameters studied showed significant reduction. Although copper could act as an immunostimulant at lower doses, it significantly reduced the disease resistance of the species at concentrations above 0.5 ppm in mesohaline waters.

Item Type:Article
Uncontrolled Keywords:Copper toxicity; Crassostrea madrasensis; Hemolymph factors; Indian edible oyster
Subjects:Fish and Fisheries > Fish Toxicology
Divisions:CMFRI-Cochin > Physiology and Nutrition Pathology
ID Code:2304
Deposited By:Dr. V Mohan
Deposited On:11 Aug 2010 11:22
Last Modified:11 Aug 2010 11:22

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