EFFECT OF WATER HARDNESS ON ACUTE TOXICITY OF CYPERMETHRIN TO FRESHWATER ZOOPLANKTERS– MOINA, DAPHNIA, CYCLOPS AND NAUPLII

Article Id: ARCC2372 | Page : 209-212
Citation :- EFFECT OF WATER HARDNESS ON ACUTE TOXICITY OF CYPERMETHRIN TO FRESHWATER ZOOPLANKTERS– MOINA, DAPHNIA, CYCLOPS AND NAUPLII.Indian Journal Of Animal Research.2008.(42):209-212
G.P. Verma and A.K. Gupta
Address : College of Fisheries, Maharana Pratap University of Agriculture and Technology, Udaipur-313 001, India

Abstract

Results revealed that cypermethrin is highly toxic to the test zooplankters, as the LC50 values
are noticed in ppb. The zooplankters were also found more susceptible to cypermethrin at water
hardness of 275±3 mg/l as compared to water hardness of 540±3 mg/l. In general, the trend of
sensitivity for zooplankters to cypermethrin was noticed as Moina < nauplii Daphnia cyclops
The safe dischargeable concentrations for the cypermethrin have been recorded too low as compared
to harmless or safe concentrations for the zooplankters.

Keywords

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