Occurrence and seasonal variations of algal toxins in water, phytoplankton and shellfish from North Stradbroke Island, Queensland, Australia

Takahashi E., Yu Q., Eaglesham G., Connell D.W., McBroom J., Costanzo S. and Shaw G.R. (2007) Occurrence and seasonal variations of algal toxins in water, phytoplankton and shellfish from North Stradbroke Island, Queensland, Australia. Marine Environmental Research, 64 4: 429-442. doi:10.1016/j.marenvres.2007.03.005


Author Takahashi E.
Yu Q.
Eaglesham G.
Connell D.W.
McBroom J.
Costanzo S.
Shaw G.R.
Title Occurrence and seasonal variations of algal toxins in water, phytoplankton and shellfish from North Stradbroke Island, Queensland, Australia
Journal name Marine Environmental Research   Check publisher's open access policy
ISSN 0141-1136
Publication date 2007-01-01
Sub-type Article (original research)
DOI 10.1016/j.marenvres.2007.03.005
Volume 64
Issue 4
Start page 429
End page 442
Total pages 14
Subject 1104 Complementary and Alternative Medicine
1910 Oceanography
2300 Environmental Science
Abstract A number of marine microalgae are known to produce toxins that can accumulate in shellfish and when eaten, lead to toxic and potentially fatal reactions in humans. This paper reports on the occurrence and seasonal variations of algal toxins in the waters, phytoplankton and shellfish of Southeast Queensland, Australia. These algal toxins include okadaic acid (OA), domoic acid (DA), gymnodimine (GD), pectenotoxin-2 (PTX-2) and pectenotoxin-2-seco acid (PTX-2-SA), which were detected in the sampled shellfish and phytoplankton, via HPLC-MS/MS. Dissolved OA, PTX-2 and GD were also detected in the samples collected from the water column. This was the first occasion that DA and GD have been reported in shellfish, phytoplankton and the water column in Queensland waters. Phytoplankton tows contained both the toxic Dinophysis and Pseudo-nitzschia algae species, and are suspected of being the most likely producers of the OA, PTX-2s and DA found in shellfish of this area. The number of cells, however, did not correlate with the amount of toxins present in either shellfish or phytoplankton. This indicates that toxin production by algae varies with time and the species present and that number of cells alone cannot be used as an indicator for the presence of toxins. The presence of OA and PTX-2s were more frequently seen in the summer, while DA and GD were detected throughout the year and without any obvious seasonal patterns.
Keyword Dinophysis
Domoic acid
Gymnodimine
Okadaic acid
Pseudo-nitzschia
Shellfish toxins
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
Versions
Version Filter Type
Citation counts: Scopus Citation Count Cited 38 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Wed, 27 Nov 2013, 05:50:33 EST by System User