Authors : Esmail Gharedaashi, Hamed Nekoubin, Mohammad Reza Imanpour, Alireza Asgharimoghadam and Mohammad Larijani
Abstract: The aim of present study was to determine the LC50 value of a lead and copper in Caspian Roach fingeling. Experimental fishes were procured from Gorgan (Iran) which were measured an average length 8.2±0.45 cm and weight 4.1±0.29 g. There after, they were kept sterile aquaria and the fish were fed with commercial pelleted food. A total of 27 aquariums for with a capacity of 60 L each stocked with 30 fingerlings were used in the experiments for each metals. About 24 aquaria for 8 concentrations of each metal (Pb and Cu). Composed the 24 treatments while 3 other aquaria were used as control. For each treatment, three replications were conducted. Physicochemical parameters like D.O., hardness, chlorine, etc., of aquaria water and the mortality rate of fish were monitored daily. The results indicated that lethal concentration (LC50 96 h) for lead and copper are 276.167 and 2.440 ppm, respectively. Hence, concluded that copper is more toxic than lead for Caspian Roach (Rutilus rutilus caspicus).
Esmail Gharedaashi, Hamed Nekoubin, Mohammad Reza Imanpour, Alireza Asgharimoghadam and Mohammad Larijani, 2012. Acute Toxicity of Lead Nitrate and Copper Sulphate in Caspian Roach (Rutilus rutilus caspicus). Journal of Fisheries International, 7: 6-9.