Journal of
Toxicology and Environmental Health Sciences

  • Abbreviation: J. Toxicol. Environ. Health Sci.
  • Language: English
  • ISSN: 2006-9820
  • DOI: 10.5897/JTEHS
  • Start Year: 2009
  • Published Articles: 208

Full Length Research Paper

Effect of lead nitrate on survival rate and chronic exposure on growth performance of grass carp (Ctenopharyngodon idella)

Hamed Nekoubin
  • Hamed Nekoubin
  • Department of Fishery, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
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Esmail Gharedaashi
  • Esmail Gharedaashi
  • Department of Fishery, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
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Alireza Asgharimoghadam
  • Alireza Asgharimoghadam
  • Department of Fishery, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
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Mohammad Reza Imanpour
  • Mohammad Reza Imanpour
  • Department of Fishery, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
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Vahid Taghizade
  • Vahid Taghizade
  • Department of Fishery, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
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  •  Accepted: 22 November 2012
  •  Published: 31 December 2012

Abstract

The acute toxicity of lead nitrate to grass carp (Ctenopharyngodon idella) juveniles was assessed in a static renewal bioassay for 96 h. In addition, an experiment was conducted to determine the growth performance during 60-day sublethal (Pb(NO3)2) exposure. The results indicated that median lethal concentration (LC50) of lead nitrate to Grass carp for 96 h of exposure was 246.455 µ. The chronic exposure to sublethal concentration of lead nitrate to the studied fish showed a significant decrease in final body weight in comparison to control group. The lead nitrate also had significantly decreased effect on body weight in comparison to the control. Also, the food conversion ratio (FCR) was significantly increased in comparison to control (P < 0.05). The lead nitrate also caused a significant decrease in the survival rate (P < 0.05).

 

Key words: Lethal concentration (LC50), lead nitrate, growth, grass carp, Ctenopharyngodon idella.