Title: Salinity, osmolality, and zinc uptake in Palaemon elegans (Crustacea: Decapoda)
Abstract: Rates of zinc uptake by the decapod crustacean Palaemon elegans Rathke at both 316 pg Zn 1-' and 120 pg Zn 1-' depend on changes in salinity but are independent of changes in osmolality.Zinc uptake rate increases with a decrease in salinity while osmolality is held constant, but does not change if osmolality is changed while salinity is held constant.Results are consistent with the view that the bioavailability of zinc depends on the concentration of the uncomplexed free metal ion.