By a News Reporter-Staff News Editor at Life Science Weekly -- Current study results on Plankton Research have been published. According to news reporting out of Oldenburg, Germany, by NewsRx editors, research stated, "From the German Bight along Jutland to the western Skagerrak, we found representatives of almost all groups of phycotoxins known to occur in North Sea plankton. Identification was by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) in plankton size fractions, with domoic acid and 20-me G the most abundant toxins."
Our news journalists obtained a quote from the research from Carl von Ossietzky University, "The dominance of 20-me G in the spirolide (SPX) composition of plankton from the Jutland current system matched very well with that of an isolate of the dinoflagellate Alexandrium ostenfeldii. The SPXs of the A. ostenfeldii strain S6_P12_E11, previously isolated from the western North Sea along the Scottish coast, comprised 100 20-me G, suggesting toxin homogeneity among North Sea populations of this species. We detected highest amounts of azaspiracid-1 in the 320-m size fraction at offshore stations, where the Jutland coastal current converges with the westward North Sea flow off Skagerrak. Azadinium spinosum was subsequently identified by clonal isolation from crude cultures established from these stations. Except for lipophilic toxins usually produced by the dinoflagellate Dinophysis spp., dinophysistoxin-1 (DTX-1) and DTX-2, we detected no other phycotoxins in plankton from the southern German Bight. The spatial distribution of the phycotoxins in the eastern North Sea was apparently related to the hydrographical conditions, identified from salinity and coloured dissolved organic matter profiles."
According to the news editors, the research concluded: "The biogeographical distribution of phycotoxins indicates a strong association with the northward advection by the Jutland current and the mixing of German Bight and North water masses along the northwest Danish coast towards the Skagerrak."
For more information on this research see: Phycotoxin composition and distribution in plankton fractions from the German Bight and western Danish coast. Journal of Plankton Research, 2013;35(5):1093-1108. Journal of Plankton Research can be contacted at: Oxford Univ Press, Great Clarendon St, Oxford OX2 6DP, England. (Oxford University Press - www.oup.com/; Journal of Plankton Research - plankt.oxfordjournals.org)
Our news journalists report that additional information may be obtained by contacting B. Krock, Carl von Ossietzky Univ Oldenburg, Inst Chem & Biol Marine Environm, D-26111 Oldenburg, Germany. Additional authors for this research include U. Tillmann, T.J. Alpermann, D. Voss, O. Zielinski and A.D. Cembella (see also Plankton Research).
Keywords for this news article include: Europe, Germany, Oldenburg, Plankton Research
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