عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In this study, the lethal concentration of cadmium chloride on common carp (Cyprinus carpio) and Goldfish (Carassius auratus) were measured for computing the amounts of LC50 with the aim to influence the toxicity of cadmium chloride on the strength of these two fish juveniles. After adaptation, 105 common carp with an average weight of 18 grams and length of 12 cm and 105 Goldfish with an average weight of 15 grams and total length of 7 cm were used. After determining range finding test, the LC50 test were done and concentrations of cadmium chloride were determined. Study was at 9 treatments and 3 replications for each species during 96 hours. SPSS software was used to inserts data and probit analyzer was used. Based on the results obtained LC50 of Goldfish (11.2 mg/l) compared with Carp (9.77 mg/l), can be concluded that cadmium chloride is a rarely toxic heavy metal and goldfish is more resistance to the toxin cadmium chloride than common carp.