Journal of
Cell and Animal Biology

  • Abbreviation: J. Cell Anim. Biol.
  • Language: English
  • ISSN: 1996-0867
  • DOI: 10.5897/JCAB
  • Start Year: 2007
  • Published Articles: 262

Full Length Research Paper

Comparison of hexavalent chromium bioaccumulation in five strains of paramecium, Paramecium bursaria

M. Golam Mortuza1, 2*, Toshiyuki Takahashi2, Tatsuya Ueki2, Toshikazu Kosaka2, Hitoshi Michibata2 and Hiroshi Hosoya2
1Present Address: Department of Zoology, Rajshahi University, Rajshahi 6205, Bangladesh. 2Department of Biological Science, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan.
Email: [email protected]

  •  Published: 31 March 2009


The effects of hexavalent chromium on the cell growth of paramecium,Paramecium bursaria were investigated. Five strains (KBW-2, KNN-2, KNN-3, IM-6 and F1-6a) of P. bursaria (both symbiotic and algae free) were incubated in lettuce media supplemented with different concentrations of potassium dichromate under LD (12 h light: 12 h dark) conditions. To compare the bioaccumulation of chromium in symbiotic and algae free strains of P. bursaria, the concentration of chromium in cell pellet has been analyzed and calculated. The average amount of chromium accumulated in paramecium was ranged from 1.53 to 42.12 pg Cr/cell at concentration-dependent manner after 7-day of incubation. The results show that the symbiotic and algae free strains of P. bursaria can accumulate chromium and chromium accumulation ability of symbiotic strains is higher than that of algae free strains. This suggests that interactive effect of paramecium and algal cell was generally found to be synergistic in chromium accumulation for symbiotic paramecia.


Key words: Hexavalent chromium, bioaccumulation, Paramecium bursaria.