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  • Domoic Acid Poisoning as a Possible Cause of Seasonal Cetacean Mass Stranding Events in Tasmania, Australia

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    NashPUB2102.pdf (261.2Kb)
    Author(s)
    Nash, SM Bengtson
    Baddock, MC
    Takahashi, E
    Dawson, A
    Cropp, R
    Griffith University Author(s)
    Cropp, Roger A.
    Dawson, Amanda L.
    Bengtson Nash, Susan
    Baddock, Matthew
    Year published
    2017
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    Abstract
    The periodic trend to cetacean mass stranding events in the Australian island state of Tasmania remains unexplained. This article introduces the hypothesis that domoic acid poisoning may be a causative agent in these events. The hypothesis arises from the previously evidenced role of aeolian dust as a vector of iron input to the Southern Ocean; the role of iron enrichment in Pseudo-nitzschia bloom proliferation and domoic acid production; and importantly, the characteristic toxicosis of domoic acid poisoning in mammalian subjects leading to spatial navigation deficits. As a pre-requisite for quantitative evaluation, the ...
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    The periodic trend to cetacean mass stranding events in the Australian island state of Tasmania remains unexplained. This article introduces the hypothesis that domoic acid poisoning may be a causative agent in these events. The hypothesis arises from the previously evidenced role of aeolian dust as a vector of iron input to the Southern Ocean; the role of iron enrichment in Pseudo-nitzschia bloom proliferation and domoic acid production; and importantly, the characteristic toxicosis of domoic acid poisoning in mammalian subjects leading to spatial navigation deficits. As a pre-requisite for quantitative evaluation, the plausibility of this hypothesis was considered through correlation analyses between historical monthly stranding event numbers, mean monthly chlorophyll concentration and average monthly atmospheric dust loading. Correlation of these variables, which under the domoic acid stranding scenario would be linked, revealed strong agreement (r = 0.80–0.87). We therefore advocate implementation of strategic quantitative investigation of the role of domoic acid in Tasmanian cetacean mass stranding events.
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    Journal Title
    Bulletin of Environmental Contamination and Toxicology
    DOI
    https://doi.org/10.1007/s00128-016-1906-4
    Copyright Statement
    © 2017 Springer New York. This is an electronic version of an article published in Bulletin of Environmental Contamination and Toxicology, Volume 98, Issue 1, pp 8–13, 2017. Bulletin of Environmental Contamination and Toxicology is available online at: http://link.springer.com/ with the open URL of your article.
    Note
    This publication has been entered into Griffith Research Online as an Advanced Online Version.
    Subject
    Environmental Sciences not elsewhere classified
    Chemical Sciences
    Environmental Sciences
    Publication URI
    http://hdl.handle.net/10072/100234
    Collection
    • Journal articles

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