Differential accumulation of paralytic shellfish toxins from Alexandrium minutum in the pearl oyster, Pinctada imbricata

S A Murray; Wayne A O'Connor; A Alvin; T K Mihali; J Kalaitzis; B A Neilan

doi:10.1016/j.toxicon.2009.04.005

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Differential accumulation of paralytic shellfish toxins from Alexandrium minutum in the pearl oyster, Pinctada imbricata

Journal article

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Differential accumulation of paralytic shellfish toxins from Alexandrium minutum in the pearl oyster, Pinctada imbricata

S A Murray, Wayne A O'Connor, A Alvin, T K Mihali, J Kalaitzis and B A Neilan

Toxicon, Vol.54(3), pp.217-223

2009

DOI: https://doi.org/10.1016/j.toxicon.2009.04.005

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Abstract

To investigate the potential for differential accumulation of paralytic shellfish toxins (PSTs) in various tissues of the akoya pearl oyster, Pinctada imbricata, two feeding trials were carried out using the PST-producing dinoflagellate, Alexandrium minutum. When fed with A. minutum at concentrations between 100 and 1300 cells ml-1, the maximum clearance by P. imbricata was shown to occur at a density of 300 cells ml-1. When fed twice daily at this rate for up 12 days, P. imbricata accumulated analogues of gonyautoxins (GTXs): GTXs 1,4 and 2,3. The levels of GTXs in the viscera increased progressively on days 4, 8 and 12 to peak at 17.9±4.47 μg STX-equivalent 100 g-1 biomass. Following 12 days of depuration, in the absence of A. minutum, GTX levels fell by approximately 65% to 6.0±2.20 μg STX-equivalent 100 g-1 biomass. No GTX was found in the oysters at the start of the trial or in untreated controls. The accumulation of GTX was found to be tissue specific. No GTX was detected in the muscle tissue of P. imbricata during the feeding trial. © 2009 Elsevier Ltd. All rights reserved.

Details

Title: Differential accumulation of paralytic shellfish toxins from Alexandrium minutum in the pearl oyster, Pinctada imbricata
Authors: S A Murray (Author) - University of New South Wales
Wayne A O'Connor (Author) - Port Stephens Fisheries Institute
A Alvin (Author) - University of New South Wales
T K Mihali (Author) - University of New South Wales
J Kalaitzis (Author) - University of New South Wales
B A Neilan (Author) - University of New South Wales
Publication details: Toxicon, Vol.54(3), pp.217-223
Publisher: Pergamon
Date published: 2009
DOI: 10.1016/j.toxicon.2009.04.005
ISSN: 0041-0101
Organisation Unit: University of the Sunshine Coast, Queensland; GeneCology Research Centre - Legacy
Language: English
Record Identifier: 99451298902621
Output Type: Journal article

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Web Of Science research areas: Pharmacology & Pharmacy; Toxicology

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