Authors :
Anukwu, J.U.; Nwamba, H.O.; Nwani, C.D.; Uzor, E.J.; Ogamba, E.E.
Volume/Issue :
Volume 5 - 2020, Issue 3 - March
Google Scholar :
https://goo.gl/DF9R4u
Scribd :
https://bit.ly/3a7HsGS
Abstract :
Dichlorvos is an organophosphate used
commercially for the treatment of pests such as bedbug.
The present study was designed to investigate the effects
of dichlorvos on Clarias gariepinus juveniles using
oxidative stress and antioxidant parameters. Fishes
were exposed to 2.14 and 4.28mg/l corresponding to
1/10 and 1/5th of 96h LC50 of the pesticide. Each of the
concentration was replicated thrice for the purpose of
accuracy. The muscle tissues were sampled on day 1, 5,
10 and 15. Results showed concentration and time
dependent values across the concentration. The value of
catalase (CAT) declined while that of lipid peroxidation
(LPO) increased significantly(p<0.05) when compared
with the control. Hepatosomatic index (HSI) and
condition factor (CF) showed significant differences
when compared with the control. The present study
revealed that dichlorvos elicits toxic stress even at
sublethal concentrations resulting in alteration in the
studied parameters which is very evident in the blood,
serum and muscle samples. There should be urgent
education of farmers and the general public on the
dangers of dichlorvos to non-target organisms and the
environment.
Keywords :
Toxicity, Dichlorvos, Fish, Antioxidant Parameters.
Dichlorvos is an organophosphate used
commercially for the treatment of pests such as bedbug.
The present study was designed to investigate the effects
of dichlorvos on Clarias gariepinus juveniles using
oxidative stress and antioxidant parameters. Fishes
were exposed to 2.14 and 4.28mg/l corresponding to
1/10 and 1/5th of 96h LC50 of the pesticide. Each of the
concentration was replicated thrice for the purpose of
accuracy. The muscle tissues were sampled on day 1, 5,
10 and 15. Results showed concentration and time
dependent values across the concentration. The value of
catalase (CAT) declined while that of lipid peroxidation
(LPO) increased significantly(p<0.05) when compared
with the control. Hepatosomatic index (HSI) and
condition factor (CF) showed significant differences
when compared with the control. The present study
revealed that dichlorvos elicits toxic stress even at
sublethal concentrations resulting in alteration in the
studied parameters which is very evident in the blood,
serum and muscle samples. There should be urgent
education of farmers and the general public on the
dangers of dichlorvos to non-target organisms and the
environment.
Keywords :
Toxicity, Dichlorvos, Fish, Antioxidant Parameters.
