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Cypermethrin induced dynamics of hemocyte density of Indian mollusc lamellidens marginalis
K DAS, M RAY,
Published in Nova Science Publishers, Inc.
2014
Pages: 139 - 149
Abstract
Hemocytes the blood cells of Lamellidens marginalis (Mollusca:Bivalvia) capable of performing diverse immunological functions, including phagocytosis, encapsulation, nonself surface adhesion and cytotoxicity. Cypermethrin a type II pyrethroid pesticide is usually widely used in agricultural field which contaminates the freshwater habitat of this species during monsoon. Toxicity of this pesticide is screened in L. marginalis in respect to hemocyte density and subpopulation. The species were exposed to 0.03, 0.05, 0.07 and 0.09 ppm of cypermethrin for 24, 48, 72, 96 hours, 7, 15 days and total counts of hemocytes were determined. Initial increase in total hemocyte count followed by suppression at the later stages was observed. Different hemocyte subpopulations were determined and enumerated microscopically. Five hemocyte classes were identified: granulocytes, agranulocytes, asterocytes, hyalinocytes and blast like cells. Decline in total count of agranulocytes, hyalinocytes and asterocytes and elevation of relative density of granulocytes and blast like cells were observed under exposure of cypermethrin in a dose dependent manner, Cypermethrin induced alteration of density of total hemocytes and different subpopulations indicates a disruption of cellular functions, homeostasis and immunological states of the species. Prolonged sub lethal exposure of cypermethrin may lead to population decline of this economically important species in its natural habitat. © 2014 by Nova Science Publishers, Inc. All rights reserved.
About the journal
JournalVertebrate and Invertebrate Animal Approaches
PublisherNova Science Publishers, Inc.
Open AccessNo