HAEMATOLOGICAL STUDY OF CLARIAS GARIEPINUS EXPOSED TO CHRONIC AND SUBCHRONIC DOSES OF CADMIUM, MERCURY AND COMBINED CADMIUM AND MERCURY

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Date
2012-02
Authors
Guedenon, P.
Edorh, P.A.
Hounkpatin, A.S.Y.
Alimba, C.G.
Ogunkanmi, L.A.
Nwokejiegbe, E.G.
Deguenon, Y.
Messanvi, G.
Creppy, E.E.
Journal Title
Journal ISSN
Volume Title
Publisher
Science and Nature
Abstract
In order to assess heavy metals influence on haematological parameters, 300 of Clarias gariepinus were divided into control and experimental groups. Three groups (A,B,C) were respectively exposed to cadmium ( 15.3 mg/L, 7.6 mg/L and 5mg/L), another set (D,E,F) was respectively exposed to mercury ( 0.2 mg/L, 0.1 mg/L and 0.06 mg/L) and the last experimental set (G,H,I) was exposed to combined metals. At the end of first, second and third week, eight fish were randomly selected from each group and blood was collected and analyzed for haematological parameters. The results revealed significant declines in blood parameters at all periods with mercury. Also the highest decrease in blood parameters occurred after three weeks with high concentration of combined cadmium and mercury. The data obtained in the present work demonstrate that cadmium and particularly mercury and combination of cadmium and mercury are high stressors threatening the aquaculture.
Description
Keywords
Clarias gariepinus, blood parameters, heavy metals, sub-lethal concentrations
Citation
Guedenon, P. Edorh, P.A. Hounkpatin, A.S.Y. Alimba, C.G. Ogunkanmi, L.A. Nwokejiegbe, E.G. Deguenon, Y. Messanvi, G. and Creppy, E.E. 2012. HAEMATOLOGICAL STUDY OF CLARIAS GARIEPINUS EXPOSED TO CHRONIC AND SUBCHRONIC DOSES OF CADMIUM, MERCURY AND COMBINED CADMIUM AND MERCURY. Science and Nature. 4(2): 2-19