ISSN 2756-3448
Global Journal of Food and Agricultural Sciences Vol. 2 (3) pp. 095-098, March, 2015. © International Scholars Journals
Full Length Research Paper
Intense hematological reaction of a cichlid fish Sarotherodon melanotheron presented to raw petroleum
*1Obiwayne Eze kalu, Okot V. Edet2 and Akpoguma Destiny2
1Department of Animal and Environmental Biology, Faculty of Science, University of Calabar, Calabar, Nigeria.
2Department of Crop and Soil Science, Faculty of Agriculture, Usmanu Danfodiyo University, Sokoto, Nigeria.
E-mail: [email protected].
Accepted 25 January, 2015
Abstract
The acute haematological response of a brackish water cichlid fish Sarotherodon melanotheron exposed to crude oil was evaluated. They were exposed for 96 h to crude oil concentrations of 0, 50, 125, 250, 375, and 500 mg/L of water obtained from the fish source. Haematological analyses were carried out at 12, 24, 48, 72, and 96 h, respectively. Haematological analysis revealed that the red blood cells (RBC), haemoglobin (Hb), packed cell volume (PCV), thrombocytes, and lymphocytes of the control group were significantly higher (P≤ 0.05) than the crude oil treated groups while the white blood cells (WBC), neutrophils, leucocrit (Lct) and monocytes of the crude oil treated groups were significantly higher than the control group, indicating an immune response to the toxicant. These parameters can be standardised and used as biomarkers in biomonitoring programs.
Key words: Haematological response, biomarkers, biomonitoring, Sarotherodon melanotheron, crude oil.