Doyel Roya , Dipta Naga, Ranjeeta Bhattacharyab & Kiran Kumari*b
a Department of Microbiology, Kulti Degree College, Kulti, Burdwan
bDepartment of Zoology, Ranchi University, Ranchi-834008
Received 7 August 2007; Revised 18th September 2007
Abstract : Acute 96 hour’s bioassay experiment of combined exposure to Copper and Mercury were conducted for fish Channa punctatus (Bloch). The fish were exposed to one fifth of LC50 dose of combined metals (Copper and Mercury). The combination exhibited synergistic toxic effect on fish. A significant decrease was observed in blood serum, Na+ concentration, K+ concentration, Cl– concentration and protein concentration.
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