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Dosage and Temporal Dependent Arsenic-Induced Mortality in Ceriodaphnia dubia: an Effective Biomarker for Arsenic Pollution

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Arsenic (As) is a metalloid that causes severe water pollution due to its extravagant toxicity. Ceriodaphnia dubia, a freshwater crustacean, was selected as a model system to evaluate the degree of time and dosage dependent acute toxicity caused by pentavalent As [As(V)]. C. dubia were collected from a natural pond and treated with different concentrations of As(V) for 24 hours and 48 hours. For both 24 hours and 48 hours treatment periods, the mortality rates were increased significantly ( P< 0.05) with increase in As(V) concentrations. Simultaneously, it was also observed that As(V) - induced mortality in C. dubia also depended on the time of exposure to the metalloid. We propose this model as a low-cost technique towards rapid screening of water quality in relation to As contamination.


International Letters of Natural Sciences (Volume 7)
S. N. Talapatra et al., "Dosage and Temporal Dependent Arsenic-Induced Mortality in Ceriodaphnia dubia: an Effective Biomarker for Arsenic Pollution", International Letters of Natural Sciences, Vol. 7, pp. 30-34, 2014
Online since:
December 2013

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