title: Metal Transfer among Organs Following Short- and Long-Term Exposures Using Autoradiography: Cadmium Bioaccumulation by the Freshwater Prawn Macrobrachium australiense.
abstract: The uptake, depuration, and organ distribution of the radioisotope109Cd were used to explore the internal kinetics of this nonessential metal following accumulation from waterborne cadmium by the freshwater decapod crustacean Macrobrachium australiense. Short- (6 h) and long-term (7 to 14 days) exposures to the radioisotope in solutions of 0.56 μg Cd/L were followed by depuration in metal- and isotope-free water for up to 21 days. The anatomical distribution of the radionuclide was visualized using autoradiography at predefined time points. The gills did not become saturated with cadmium after 14 days of exposure and demonstrated a greater rate of cadmium uptake relative to the hepatopancreas. Cadmium concentrations decreased rapidly during depuration from both gills and hepatopancreas after short exposures but slowly following long-term exposures. This suggests that the duration of cadmium exposure influences the depuration rate for this organism. The study demonstrates the complex behavior of cadmium accumulated by M. australiense and improves our understanding of how exposure duration will influence the internal location and potential toxicity of metals.
authors.affiliation: Australian Nuclear Science and Technology Organisation , Locked Bag 2001, Kirrawee DC, Sydney, New South Wales 2232, Australia.
authors.forename: Tom
authors.identifier: 0000-0002-5320-7553
authors.initials: T
authors.lastname: Cresswell
authors.affiliation: Australian Nuclear Science and Technology Organisation , Locked Bag 2001, Kirrawee DC, Sydney, New South Wales 2232, Australia.
authors.forename: Debashish
authors.initials: D
authors.lastname: Mazumder
authors.affiliation: Australian Nuclear Science and Technology Organisation , Locked Bag 2001, Kirrawee DC, Sydney, New South Wales 2232, Australia.
authors.forename: Paul D
authors.initials: PD
authors.lastname: Callaghan
authors.affiliation: Australian Nuclear Science and Technology Organisation , Locked Bag 2001, Kirrawee DC, Sydney, New South Wales 2232, Australia.
authors.forename: An
authors.initials: A
authors.lastname: Nguyen
authors.affiliation: Australian Nuclear Science and Technology Organisation , Locked Bag 2001, Kirrawee DC, Sydney, New South Wales 2232, Australia.
authors.forename: Michael
authors.initials: M
authors.lastname: Corry
authors.affiliation: CSIRO Land and Water, Centre for Environmental Contaminants Research , Sydney, New South Wales 2232, Australia.
authors.forename: Stuart L
authors.initials: SL
authors.lastname: Simpson
mesh_terms: D000818:Animals; D001345:Autoradiography; D002104:Cadmium / Q000378:metabolism / Q000633:toxicity; D005618:Fresh Water; D005880:Gills; D009928:Organ Specificity; D033541:Palaemonidae / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000378:metabolism / Q000633:toxicity
chemical_list: D014874:Water Pollutants, Chemical; D002104:Cadmium