Subscribe Now Subscribe Today
Science Alert
Curve Top
Journal of Biological Sciences
  Year: 2013 | Volume: 13 | Issue: 5 | Page No.: 365-371
DOI: 10.3923/jbs.2013.365.371
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

In vivo Acute Toxicity Tests of Some Heavy Metals to Tilapia Fish (Oreochromis niloticus)

Abdulali Taweel, M. Shuhaimi-Othman and A. K. Ahmad

Fingerlings tilapia fish (Oreochromis niloticus) were exposed in laboratory conditions to a range of Copper (Cu), Cadmium (Cd), Lead (Pb) and Zinc (Zn) concentrations separately and the mortality rate were registered after 24, 48, 72 and 96 h. Median Lethal Concentrations (LC50s) and Median Lethal Times (LT50s) values were calculated by static bioassays for 24, 48, 72 and 96 h with the 95% fiducial limits through Probit analysis. LC50 and LT50 increased with the decrease in mean exposure times and concentrations, respectively. The LC50s for 96 h for Cu, Cd, Zn and Pb were 1093, 3751, 16177 and 1494 μg L-1, respectively and the LT50s for maximum concentration used for Cu, Cd, Zn and Pb were 20.25, 11.48, 20.70 and 24.66 h, respectively. Metals bioconcentration in tilapia fish increases with exposure to increasing concentrations and Cu was the most toxic to tilapia fish, The toxicity ranking of the four heavy metals was Cu>Pb>Cd>Zn. Comparison of LC50 values for studied heavy metals for this species with those for other fishes reveals that tilapia fish (Oreochromis niloticus) is equally or less sensitive to heavy metals than most other tested fishes.
PDF Fulltext XML References Citation Report Citation
  •    Biochemical Effects of Short-term Cadmium Exposure on the Freshwater Fish, Oreochromis niloticus
  •    Accumulation of Metals in the Gills of Tilapia Fingerlings (Oreochromis niloticus) from in vitro Toxicology Study
  •    Levels of Heavy Metals in Green-Lipped Mussel Perna veridis (Linnaeus) from Muar Estuary, Johore, Malaysia
  •    Analysis of Heavy Metal Concentrations in Tilapia Fish (Oreochromis niloticus) From Four Selected Markets in Selangor, Peninsular Malaysia
How to cite this article:

Abdulali Taweel, M. Shuhaimi-Othman and A. K. Ahmad, 2013. In vivo Acute Toxicity Tests of Some Heavy Metals to Tilapia Fish (Oreochromis niloticus). Journal of Biological Sciences, 13: 365-371.

DOI: 10.3923/jbs.2013.365.371






Curve Bottom