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 Online Journal of Veterinary Research © 

Volume 14 (2): 176-187, 2010. Redacted 2018.

Assessment of acute toxicity of sodium cyanide to a freshwater teleost, Labeo rohita  (Ham)

 

Praveen N. Dube and Hosetti B.B

 

Toxicology division, Dept. of Applied Zoology, Janasahyadri, Kuvempu University, Shimoga, Karnataka, India

ABSTRACT

 

Praveen ND, Hosetti BB.,  Assessment of acute toxicity of sodium cyanide to a freshwater teleost, Labeo rohita  (Ham) Online J Vet Res 14 (2): 176-187, 2010. Acute static renewal bioassays were conducted for 96 h period with sodium cyanide to determine its acute toxicity to a freshwater fish, Labeo rohita. Fishes were exposed to different concentration of sodium cyanide and the LC50 value was found to be 0.32 mg/l. The alterations in behavioural pattern, such as change in the color of skin, hyperactivity, loss of balance, rapid swimming, increased surfacing activity, enhanced rate of opercular activity, as well as prominent rates of convulsions in treated fish were observed with the increasing concentrations of cyanide as compared to the control fish. The results suggested that even at low concentrations, cyanide may exert toxic effects, markedly modifying their behavioural patterns.

 

Keywords: Labeo rohita, acute toxicity, sodium cyanide, behavioural response.

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