International Journal of
Fisheries and Aquaculture

  • Abbreviation: Int. J. Fish. Aquac.
  • Language: English
  • ISSN: 2006-9839
  • DOI: 10.5897/IJFA
  • Start Year: 2010
  • Published Articles: 223

Full Length Research Paper

Toxicity of Parkia biglobosa pod extract on Clarias gariepinus juveniles

R. O. Ojutiku1*, E. P. Avbarefe1, R. J. Kolo1 and F. P. Asuwaju2
  1Department of Water Resources, Aquaculture and Fisheries Technology, Federal University of Technology, Minna, Niger State, Nigeria. 2Federal College of Freshwater Fisheries Technology, Baga Maiduguri, Borno State.
Email: [email protected]

  •  Accepted: 25 May 2012
  •  Published: 31 August 2012

Abstract

 

The toxicity of aqueous and ethanolic extracts of Parkia biglobosa pods (95, 85, 75, 65 and 55 mg/l) on Clarias gariepinus was investigated under laboratory condition over a 96 h exposure period. Fish exposed to both extracts exhibited clinical signs including eventual death but was not observed in the control fish. Weight change in fish was observed as well as the effect of the plant on the water parameters. However, clinical signs and death were more in fish exposed to the ethanolic extract. It was concluded that aqueous and ethanol extracts of P. biglobosa pods are toxic to C. geriepinus juveniles with the ethanol extract being more toxic, which shows that apart from the bark of P. biglobosa, the pods has piscicidal property and can be put into use in the control and management of fish ponds to eradicate predators by farmers.

 

Key words: Parkia biglobosa, pod, Clarias gariepinus, toxicity.