Metal Concentration in Fresh Water Fish Organs

Krishnappa Venkatesha Raju, Rayasamudra Kalegowda Somashekar, Konehally Lakshmaiah Prakash

Department of Environmental Science, Bangalore University, Bangalore, India.

DOI: 10.4236/ojmetal.2013.32004                

Abstract

This study was conducted during March to May of 2010 dry season, giving prime thrust to determine the metal concentrations in commercial fish species of Catla catla and Labeo rohita, collected from various points along the river Cauvery. The liver, gill and muscle tissues of fish were analyzed for Fe, Pb, Zn, Ni, Mn, Cu, Cr and Cd using Atomic Absorption Spectrophotometry (AAS-model: 6300). The Catla catla has shown more accumulation potency for all the metals than Labeo rohita. The liver in both fish species has better accretion capacity compared to gill and muscle and the same was noticed by bioaccumulation factor. The results of bioaccumulation factor were in the order of Ni > Zn > Cu > Mn > Fe > Cr > Pb > Cd. Elevated trend was noticed among the essential metals and decreased trend among the nonessential metals were observed in both fish species.

Keywords

Cauvery; Heavy Metal; Fish; Cauvery; Bioaccumulation

Conflicts of Interest

The authors declare no conflicts of interest.

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