Bioaccumulation kinetics and organ distribution of cadmium and zinc in the freshwater decapod crustacean macrobrachium australiense

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dc.contributor.authorCresswell, Ten_AU
dc.contributor.authorSimpson, SLen_AU
dc.contributor.authorMazumder, Den_AU
dc.contributor.authorCallaghan, PDen_AU
dc.contributor.authorNguyen, APen_AU
dc.date.accessioned2020-03-30T00:19:48Zen_AU
dc.date.available2020-03-30T00:19:48Zen_AU
dc.date.issued2014-12-24en_AU
dc.description.abstractThis study used the radioisotopes 109Cd and 65Zn to explore the uptake, retention and organ distribution of these nonessential and essential metals from solution by the freshwater decapod crustacean Macrobrachium australiense. Three treatments consisting of cadmium alone, zinc alone, and a mixture of cadmium and zinc were used to determine the differences in uptake and efflux rates of each metal individually and in the metal mixture over a three-week period, followed by depuration for 2 weeks in metal-free water using live-animal gamma-spectrometry. Following exposure, prawns were cryosectioned and the spatial distribution of radionuclides visualized using autoradiography. Metal uptake and efflux rates were the same in the individual and mixed-metal exposures, and efflux rates were close to zero. The majority of cadmium uptake was localized within the gills and hepatopancreas, while zinc accumulated in the antennal gland at concentrations orders of magnitude greater than in other organs. This suggested that M. australiense may process zinc much faster than cadmium by internally transporting the accumulated zinc to the antennal gland. The combination of uptake studies and autoradiography greatly increases our understanding of how metal transport kinetics and internal processing may influence the toxicity of essential and nonessential metals in the environment. © 2014 American Chemical Societyen_AU
dc.identifier.citationCresswell, T., Simpson, S. L., Mazumder, D., Callaghan, P. D., & Nguyen, A. P. (2015). Bioaccumulation kinetics and organ distribution of cadmium and zinc in the freshwater decapod crustacean Macrobrachium australiense. Environmental science & technology, 49(2), 1182-1189. http://doi.org/10.1021/es505254wen_AU
dc.identifier.govdoc8702en_AU
dc.identifier.issn0013-936Xen_AU
dc.identifier.issue2en_AU
dc.identifier.journaltitleEnvironmental science & technologyen_AU
dc.identifier.pagination1182-1189en_AU
dc.identifier.urihttp://doi.org/10.1021/es505254wen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9303en_AU
dc.identifier.volume49en_AU
dc.language.isoenen_AU
dc.publisherACS Publicationsen_AU
dc.subjectRadioisotopesen_AU
dc.subjectMetalsen_AU
dc.subjectZincen_AU
dc.subjectCadmiumen_AU
dc.subjectPrawnsen_AU
dc.subjectFresh wateren_AU
dc.subjectCrustaceansen_AU
dc.subjectBiological accumulationen_AU
dc.subjectGamma spectroscopyen_AU
dc.subjectAutoradiographyen_AU
dc.subjectKineticsen_AU
dc.subjectToxicityen_AU
dc.titleBioaccumulation kinetics and organ distribution of cadmium and zinc in the freshwater decapod crustacean macrobrachium australienseen_AU
dc.typeJournal Articleen_AU
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