Indian Journal of Animal Research

  • Chief EditorK.M.L. Pathak

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Indian Journal of Animal Research, volume 42 issue 3 (september 2008) : 209-212

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

G.P. Verma, A.K. Gupta
1College of Fisheries, Maharana Pratap University of Agriculture and Technology, Udaipur-313 001, India
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Cite article:- Verma G.P., Gupta A.K. (2024). EFFECT OF WATER HARDNESS ON ACUTE TOXICITY OF CYPERMETHRIN TO FRESHWATER ZOOPLANKTERS– MOINA, DAPHNIA, CYCLOPS AND NAUPLII. Indian Journal of Animal Research. 42(3): 209-212. doi: .
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.
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