ISSN 2736-1756
Advanced Journal of Microbiology Research Vol. 2005
Available online at http://internationalscholarsjournals.org/journal/ajmr
© 2005 International Scholars Journals
Full Length Research Paper
Histopathology of the gill and liver tissues of the African catfish Clarias gariepinus exposed to lead
OLOJO, E. A. A. 1*, OLURIN, K. B., 1MBAKA, G. and OLUWEMIMO, A. D.1
1Department of Biological Sciences, Olabisi Onabanjo University, P. M. B. 2002, Ago-Iwoye, Ogun State, Nigeria.
2Department of Anatomy, College of Basic Medical Sciences, Olabisi Onabanjo University, P.M.B. 2002, Ago-Iwoye, Ogun State, Nigeria.
Accepted 21 July, 2004
Abstract
An investigation on the effect of the heavy metal, lead (Pb) on the gill and liver of the African catfish Clarias gariepinus was carried out in the laboratory. One hundred and sixty (160) fingerlings of the fish were exposed to continuous exposure to sub-lethal concentrations (0.006 mg/l and 0.008 mg/l) of lead for a period of three weeks. The liver and gill of fish were removed every 9 days for histological examination. The results showed that the degree of distortion of the gills and liver was proportional to the exposure periods and concentration of the metals was found to be dose and time dependent.
Key words: Lead, Clarias gariepinus, histopathology, gill, liver.