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    Experiment to decipher the effect of heavy metal cadmium on coastal benthic foraminifer Pararotalia Nipponica (Asano)

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    J_Palaeontol_Soc_India_58_205a.pdf (365.1Kb)
    Date
    2013
    Author
    Linshy, V.N.
    Saraswat, R.
    Kurtarkar, S.R.
    Nigam, R.
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    Abstract
    The response of benthic foraminifer Pararotalia nipponica to heavy metal cadmium is observed in laboratory experiment. The results indicate that under a given set of conditions, heavy metal cadmium is deleterious to benthic foraminifera. Gradual increase in cadmium (Cd) concentration mainly affected normal growth and caused morphological abnormalities which were consistent from 4 µg/l to 14 µg/l. The intensity of deformation was severe exhibiting a peculiar change in coiling direction with increase in cadmium concentration. The presence of >50% deformed specimens at the lowest cadmium concentration (2 µg/l) indicates that the threshold of Cd concentration which is detrimental to P. nipponica is <2 µg/l
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    http://drs.nio.org/drs/handle/2264/4613
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