title: Silver deprivation limits fecundity and survivability in the freshwater crustacean, Daphnia magna.
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.
authors.affiliation: Department of Environmental Sciences, Rutgers University, New Brunswick, NJ, USA. imtiazr@envsci.rutgers.edu
authors.forename: Imtiaz
authors.initials: I
authors.lastname: Rangwala
authors.forename: Kathleen I
authors.initials: KI
authors.lastname: Keating
mesh_terms: D000818:Animals; D003621:Daphnia / Q000502:physiology*; D005298:Fertility / Q000187:drug effects; D008136:Longevity / Q000187:drug effects; D012834:Silver / Q000172:deficiency*
chemical_list: D012834:Silver