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

G R MacFarlane; S J Markich; K Linz; S Gifford; R H Dunstan; Wayne A O'Connor; R A Russell

doi:10.1016/j.envpol.2005.10.042

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

Journal article

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

G R MacFarlane, S J Markich, K Linz, S Gifford, R H Dunstan, Wayne A O'Connor and R A Russell

Environmental Pollution, Vol.143(1), pp.166-173

2006

DOI: https://doi.org/10.1016/j.envpol.2005.10.042

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Abstract

lead (Pb)

pearl oyster

shell

secondary ion mass spectrometry (SIMS)

biomonitor

The 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. All rights reserved.

Details

Title: The Akoya pearl oyster shell as an archival monitor of lead exposure
Authors: G R MacFarlane (Author) - University of Newcastle
S J Markich (Author) - Aquatic Solutions International
K Linz (Author) - University of Newcastle
S Gifford (Author) - University of Newcastle
R H Dunstan (Author) - University of Newcastle
Wayne A O'Connor (Author) - Port Stephens Fisheries Centre
R A Russell (Author) - Australian Nuclear Science and Technology Organisation
Publication details: Environmental Pollution, Vol.143(1), pp.166-173
Publisher: Pergamon
Date published: 2006
DOI: 10.1016/j.envpol.2005.10.042
ISSN: 0269-7491
Organisation Unit: University of the Sunshine Coast, Queensland; GeneCology Research Centre - Legacy
Language: English
Record Identifier: 99450700202621
Output Type: Journal article

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Collaboration types: Domestic collaboration
Web Of Science research areas: Environmental Sciences