The Akoya pearl oyster shell as an archival monitor of lead exposure

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dc.contributor.authorMacFarlane, GRen_AU
dc.contributor.authorMarkich, SJen_AU
dc.contributor.authorLinz, Ken_AU
dc.contributor.authorGifford, Sen_AU
dc.contributor.authorDunstan, RHen_AU
dc.contributor.authorO'Connor, Wen_AU
dc.contributor.authorRussell, RAen_AU
dc.date.accessioned2024-02-22T23:16:43Zen_AU
dc.date.available2024-02-22T23:16:43Zen_AU
dc.date.issued2006-09en_AU
dc.date.statistics2024-02-20en_AU
dc.description.abstractThe Akoya pearl oyster (Pinctada imbricata) was experimentally exposed to (a) constant levels of lead (Pb) at 180 μg L−1 for nine weeks, or (b) two short term (pulse) exposures of Pb at 180 μg L−1 (three weeks each) with an intervening depuration period (three weeks), to assess its utility as an (i) accumulative monitor of Pb contamination and an (ii) archival monitor for discriminating constant versus pulsed Pb exposure events. P. imbricata showed similar reductions in growth (based on shell morphology and wet weight) and Pb accumulation patterns for whole tissue and shell in response to both Pb exposure regimes. Thus the whole oyster was deemed an inappropriate accumulative monitor for assessing short-term temporal variation of Pb exposure and effect. However, using secondary ion mass spectrometry, Pb was shown to accumulate in the successively deposited nacreous layers of the shell of P. imbricata, documenting the exposure history of constant versus pulsed Pb events. Patterns of Pb deposition not only reflected the frequency of Pb exposure events but also their relative durations. Thus, the shell of P. imbricata may be employed as a suitable biological archive of Pb exposure. © 2005 Elsevier Ltd.en_AU
dc.description.sponsorshipWe acknowledge the assistance provided by Ted Roach with shell section preparation and Kathryn Prince with SIMS analyses at the Australian Nuclear Science and Technology Organisation. Port Stephens Pearls are thanked for providing juvenile pearl oysters. Thanks to Norm Lawler for his assistance in maintaining the oysters in the laboratory. Financial support was generously provided through an Australian Institute of Nuclear Science and Engineering research grant (AINGRA04102) and the University of Newcastle.en_AU
dc.identifier.citationMacFarlane, G. R., Markich, S. J., Linz, K., Gifford, S., Dunstan, R. H., O'Connor, W., & Russell, R. A. (2006). The Akoya pearl oyster shell as an archival monitor of lead exposure. Environmental pollution, 143(1), 166-173. doi:10.1016/j.envpol.2005.10.042en_AU
dc.identifier.issn0269-7491en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleEnvironmental pollutionen_AU
dc.identifier.pagination166-173en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/15395en_AU
dc.identifier.volume143en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.relation.urihttps://doi.org/10.1016/j.envpol.2005.10.042en_AU
dc.subjectLeaden_AU
dc.subjectOystersen_AU
dc.subjectShellsen_AU
dc.subjectMass spectroscopyen_AU
dc.subjectMonitoringen_AU
dc.subjectContaminationen_AU
dc.titleThe Akoya pearl oyster shell as an archival monitor of lead exposureen_AU
dc.typeJournal Articleen_AU
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