Silver deprivation limits fecundity and survivability in the freshwater crustacean, Daphnia magna

Biological Trace Element Research
Imtiaz Rangwala, K I Keating

Abstract

The nutritional role of silver for the freshwater crustacean, Daphnia magna, was examined through four generations of deprivation. Silver inclusion in animal media was set at a nominal zero (employing chemicals of the highest available purity). Both reproduction (-60%) and life span (-40%) were negatively affected when compared to animals reared in the presence of 0.4 ng g(-1) Ag. These results strongly suggest a nutritional requirement of silver for daphnids at nanomolar concentrations.

References

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Jun 1, 1984·Proceedings of the National Academy of Sciences of the United States of America·K I Keating, B C Dagbusan
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Citations

Apr 19, 2011·Journal of Environmental Monitoring : JEM·Birgit K GaiserTeresa F Fernandes

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