Acute toxicity test of different concentrations of nano Coppers on Rainbow Trout (Oncorhynchus mykiss)

Document Type : Original Article

Authors

1 Department of Fisheries, Faculty of natural resource, University of Gonbad Kavous, Gonbad Kavous

2 Department of Fishery, Faculty of Fisheries and Environment, Gorgan University of Agricultural Science and Natural Resources, Gorgan

Abstract

Nano-particles have many applications in human activities, so in this study, the toxic effect of nano copper (CuO NPs) on rainbow trout (Oncorhynchus mykiss) was examined and also with toxicity test, lethal concentration and mortality of this species during exposure to nanoparticles were studied. 155 rainbow trout with an average weight of about 18 grams were prepared and transferred to the Gorgan Center of Fani-Herfei randomly in 15 aquariums containing control and four treated with different concentrations of nanoparticles (concentrations of 25, 30, 50 and 100 milligrams per liter). All fish were exposed in 96 hours at certain concentrations and mortality was recorded at 24, 48, 72 and 96 hours. In this study total hardness of water was 270 mg/l, so because of hardness nano coopers were settled in the water and no mortality was observed. Eventually with comparing the effect of nano coopers could find that nanoparticles have better function and less toxicity and lesions on fishes.

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