Study of the Hematological and Histopathological Changes Induced by Cypermethrin in Anabas testudineus (Bloch, 1792)
Shabnam A. Kawsar
Division of Fish & Fishery Biology, Department of Zoology, School of Biological Sciences, University of Science & Technology Meghalaya, Ri-Bhoi, Meghalaya – 793101, India.
Kangkan Jyoti Sarma
*
Division of Fish & Fishery Biology, Department of Zoology, School of Biological Sciences, University of Science & Technology Meghalaya, Ri-Bhoi, Meghalaya – 793101, India.
Aditya Das
Division of Fish & Fishery Biology, Department of Zoology, School of Biological Sciences, University of Science & Technology Meghalaya, Ri-Bhoi, Meghalaya – 793101, India.
Sudipta Nag
Division of Fish & Fishery Biology, Department of Zoology, School of Biological Sciences, University of Science & Technology Meghalaya, Ri-Bhoi, Meghalaya – 793101, India.
Syed Rizaul Karim Ahmed
Division of Fish & Fishery Biology, Department of Zoology, School of Biological Sciences, University of Science & Technology Meghalaya, Ri-Bhoi, Meghalaya – 793101, India.
Arup Nama Das
Division of Fish & Fishery Biology, Department of Zoology, School of Biological Sciences, University of Science & Technology Meghalaya, Ri-Bhoi, Meghalaya – 793101, India.
*Author to whom correspondence should be addressed.
Abstract
The present study was attempted to understand about the effects of Cypermethrin, a common pyrethroid insecticide used in agricultural fields, on Anabas testudineus. The impacts focused on this study were the hematological and histopathogical parameters after inducing the fishes with lethal concentrations of the insecticides. Live specimens of Anabas sp. of equal length and weight were taken for the study, and after administration of the insecticide, blood & tissue samples were taken at different time intervals. Changes were clearly observed with different concentrations of Cypermethrin in all blood parameters. Reduction in blood volume, the appearance of shrunken blood cells, and enlarged nuclei were observed during the blood parameter studies. The gill tissue observed for changes after the insecticide administration showed a wide change in colour and structure with respect to the control group. Significant gill lesions, including epithelial lifting, desquamation, necrosis, and hyperplasia of epithelial cells, hemorrhage were observed in the gill lamellae. It is quite evident from the study that Cypermethrin, an actively used insecticidal ingredient in the agricultural fields and has a deteriorating effect on the fishes which can be create adverse effects on humans as well upon fish consumption.
Keywords: Cypermethrin, insecticide, blood, gill, histopathology, Anabas sp.