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Abstract
The aim of present study was to determine the toxicity (LC50) of cadmium chloride in freshwater catfish Heteropneustes fossilis. Acute toxicity of cadmium on the indigenous fish H., fossilis was designed in the fish aquarium in laboratory at room temperature in Department of Zoology, DGPG College at Kanpur.
Treated fish H., fossilis induced morphological alteration against cadmium chloride toxicity. H. fossilis showed morphological alteration such as increased opercula movement, abnormal swimming, and loss of buoyancy and fading of their body colour. Control fishes were also continuously monitored and compared with the changes caused by cadmium concentration.
Heteropneustes fossilis exposed different concentration of cadmium chloride toxicity i.e. 0 ppm for 24 h, 10 ppm for 48h, 15ppm for 72h and 20 ppm for 96 h. From this present study it seems that the indigenous fish, H. fossilis is more susceptible to cadmium toxicity.
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References
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References
Abbott’s, W. S. (1952). A method of computing the effectiveness of an insecticide. J. Econ. Entomol. 18:265-267. https://doi.org/10.1093/jee/18.2.265a DOI: https://doi.org/10.1093/jee/18.2.265a
Alderdice D (1967). The detection and measurement of water pollution-biological assays. Canadian Fisheries Report. 9:33-39. DOI: https://doi.org/10.1021/ac60256a723
Bhattacharyya, M H., A K Wilson, S S Rajan, and M Jonah, (2000): Biochemical pathways in Cadmium toxicity. In Molecular Biology and Toxicology of Metals (RK Zalups and J Koropatnick, Eds.) 34-74, Taylor and Francis, London.
Hollis, L., McGeer, JL, MacDonald, DC and Wood CM, (1999): Cadmium accumulation, gill cadmium binding, and physiological effects during long term sub lethal Cadmium exposure in Rainbow trout. Aquat. Toxicol. 46: 101-119. https://doi.org/10.1016/S0166-445X(98)00118-0 DOI: https://doi.org/10.1016/S0166-445X(98)00118-0
Manson, C F. (1996): Biology o fresh water pollution. III Edition. Longman, U.K.1-4.
Maruthanayagam, C., Sharmila, G and Kumar, A. (2002): Toxicity of Cadmium on the morphological and behavioural aspects in Labeo rohita. Ecology and Ethology of Aquatic Biota. New Delhi:119-127
Lata, S., Gopal, K and Singh, N.N. (2001): Toxicological evaluations and morphological studies in a catfish, Clarias batrachus exposed to carbaryl and carbofuran. J. Ecophysiol. Occup. Hlth. 1: 121-130.
Patro, L. (2006): Toxicological effects of Cadmium chloride on acetyl cholinesterase activity of fresh water fish, Oreochromis mossambicus Peters. Asian. J. Exp. Sci. 20(1):171-180
Saxena, O.P. and Parashari, A. (1982): Toxicity of Cadmium to Channa punctatus. Bull. Pure and Appl. Sci. 1:42-44