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Paper Details

Effect of Cadmium Chloride on the Histoarchitecture of Liver of a Freshwater Catfish, Channa punctatus

Nasrul Amin, Susan Manohar , T.A Qureshi and Salma Khan

Journal Title:Journal of Chemical, Biological and physical sciences

The availability of adequate water supply in terms of both quantity and quality is essential for human existence. However, our exploitation of water resources to fulfill the growing need of man has exerted tremendous pressure, thereby deteriorating its quality substantially. Hence, conservation of water has become of utmost importance. The water pollution is thus no longer considered to be an aesthetic problem, but a serious economic and public health problem as well1.Unfortunately, raw or inadequately treated sewage of millions of people still flow into our lakes and rivers, creating several kinds of disorders2. The release of discharge of large number of pollutants, especially heavy metals and pesticides, pose a threat to human life3. Pollution of aquatic environment by heavy metals is an extremely important and serious problem and has attracted the attention of the scientists all over the world. Industrial, agriculture and communal wastewater containing alarming high levels of heavy metals including cadmium (Cd) compounds enter into different water reservoirs without their priortreatment. This has resulted in higher concentrations of heavy metal residues in many fish culture ponds in different parts of India4. Cadmium is a non-biodegradable heavy metal and is toxic to aquatic organisms at a low concentration in culture system5. Major sources of this toxicant include NiCd and AgCd batteries manufacturing plants, sewage sludge and lead mining and processing units. Phosphate fertilizers also contain high level of cadmium, and therefore, run-off from agricultural land can also pollute the aquatic environment6. Its bioaccumulation and biomagnification potential via food web pose serious public health risk to fish consumers7.