Combinations of cypermethrin and dimethoate alter behavior, hematology and histology of African Catfish, Clarias gariepinus

Cypermethrin and dimethoate are pesticides frequently used in agriculture to eliminate pests. Contemporaneity of these and other pesticides in commercial preparations and several aquatic ecosystems is well known, though poorly studied. This study aims to evaluate the effect of sublethal concentratio...

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Published in:Environmental analysis, health and toxicology health and toxicology, 2022-12, Vol.37 (4), p.e2022028-e2022020
Main Authors: Okogwu, Okechukwu Idumah, Elebe, Florence Amarachineke, Nwonumara, Godwin Nkwuda
Format: Article
Language:English
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Summary:Cypermethrin and dimethoate are pesticides frequently used in agriculture to eliminate pests. Contemporaneity of these and other pesticides in commercial preparations and several aquatic ecosystems is well known, though poorly studied. This study aims to evaluate the effect of sublethal concentrations of combinations of cypermethrin and dimethoate on juvenile catfish, Clarias gariepinus, given that the pesticides concomitantly occur in the floodplains were the fish breed. Behavioral, hematological and histopathological changes in juvenile fish exposed to sublethal concentrations were monitored for 96 hours. Pesticide exposed fish exhibited abnormal behaviors such as erratic swimming, frequent air gulping, sudden jerk movement and rapid opercula movement and these were more pronounced in higher concentrations. Significant reductions in erythrocytes (0.83-20.94%), hemoglobin (4.12-29.23%) and PVC (7.14-28.57%) and increase in leucocytes (4.84-9.32%) were observed (p
ISSN:2671-9525
2671-9525
DOI:10.5620/eaht.2022028