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Title: Domoic acid poisoning as a possible cause of seasonal cetacean mass stranding events in Tasmania, Australia
Authors: Bengtson Nash, S.M.
Baddock, Matthew C.
Takahashi, E.
Dawson, A.
Cropp, R.
Keywords: Cetacean mass stranding
Domoic acid
Iron fertilisation
Aeolian dust
Southern Ocean
Issue Date: 2016
Publisher: © Springer Verlag (Germany)
Citation: BENGTSON NASH, S.M. ...et al., 2016. Domoic acid poisoning as a possible cause of seasonal cetacean mass stranding events in Tasmania, Australia. Bulletin of Environmental Contamination and Toxicology, In Press.
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 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.
Description: This paper is in closed access until 16th Aug 2017.
Version: Accepted for publication
DOI: 10.1007/s00128-016-1906-4
URI: https://dspace.lboro.ac.uk/2134/22432
Publisher Link: http://dx.doi.org/10.1007/s00128-016-1906-4
ISSN: 1432-0800
Appears in Collections:Closed Access (Geography)

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