Haematological Effects of Subacute Dichlorvos Toxicity in Clarias gariepinus
DOI:
https://doi.org/10.63561/jacsr.v3i1.1231Keywords:
Dichlorovos, Haematological, Subacute, Claria Garienpinus, PracticesAbstract
The use of agrochemical in agricultural practices both in peasant and commercial aimed at boosting food production has led to the use of organophosphate and organochlorine herbicides that are environmental and biodiversity unfriendly. This work examined the subacute toxicity of dichlorovos on haematological parameters of Claria gariepinus . Sixty (60) post juvenile C. gariepinus weighing between 100-500g and 10.2-20.3cm in length were randomly divided in tens into 30 liters of distilled water in 50 liters experimental tank arranged into group A, B, C, D and E. Group A served as the experimental control. The fish were exposed to 0.00mg/l (control), 0.2mg/l, 0.4mg/l, 0.8mg/l and 1.6mg/l of dichlorvos respectively, for 28 days. At the end of 28 days, blood samples were taken using a 2ml syringe into EDTA bottles for analysis. Result showed that there was a significant p<0.05 increase in mortality of C.gariepinus as the concentration of dichlorovos increases. The haematological parameters indicated an increase p<0.05 in MCHC, MCV, MCH PLATELET, L and M compared with the control. HB, RBC, WBC, N, E and PCV showed a decrease compared with control. This increase and decrease in haematological indices indicate haematological stress on the blood of the fish. This revealed that dichlorovos pesticide even at low concentration has haematological effect on C.gariepinus and other aquatic organisms.
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