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Gambierdiscus and Ostreopsis: Reassessment of the state of knowledge of their taxonomy, geography, ecophysiology, and toxicology
Of the known benthic, toxigenic microalgae, species from the genera, Gambierdiscus and Ostreopsis, present the biggest threats to human and environmental health. Gambierdiscus spp. produce
Toxic marine epiphytic dinoflagellates, Ostreopsis siamensis and Coolia monotis (Dinophyceae), in New Zealand
TLDR
L Lectin probes differentiated the two species, suggesting differential sugar moieties at their cell surfaces, and O. siamensis was cytotoxic, and irreversibly suppressed cell firing in hippocampal brain slices.
Phylogeography of Ostreopsis along West Pacific Coast, with Special Reference to a Novel Clade from Japan
TLDR
The results posed the urgent need for the development of the early detection/warning systems for O Streopsis, particularly for the widely distributed and strongly toxic Ostreopsis sp.
Yessotoxin production by Gonyaulax spinifera
TLDR
Gonyaulax spinifera, previously considered a non-YTX producer, was isolated from the seawater samples and production of YTX by the cells grown in culture was determined by identification of Y TXs by ELISA.
Limits to gene flow in a cosmopolitan marine planktonic diatom
TLDR
It is shown that gene flow between distant populations of the globally distributed, bloom-forming diatom species Pseudo-nitzschia pungens is limited and follows a strong isolation by distance pattern, which implies that under appropriate geographic and environmental circumstances, population structuring may lead to speciation and hence may play an important role in diversification of marine planktonic microorganisms.
When Naked Became Armored: An Eight-Gene Phylogeny Reveals Monophyletic Origin of Theca in Dinoflagellates
TLDR
It is shown for the first time that the characteristic dinoflagellate thecal plates, cellulosic material that is present within the sub-cuticular alveoli, appears to have had a single origin.
World-wide occurrence of the toxic dinoflagellate genus Ostreopsis Schmidt.
  • L. Rhodes
  • Biology, Medicine
    Toxicon : official journal of the International…
  • 1 March 2011
TLDR
The dinoflagellate genus, Ostreopsis Schmidt, has an increasingly global distribution, and toxic species are present in all regions in which the genus has been recorded.
Toxic dinoflagellates (Dinophyceae) from Rarotonga, Cook Islands.
Dinoflagellate species isolated from the green calcareous seaweed, Halimeda sp. J.V. Lamouroux, growing in Rarotongan lagoons, included Gambierdiscus australes Faust & Chinain, Coolia monotis
Acute toxicity of pinnatoxins E, F and G to mice.
TLDR
The high oral toxicity of pinnatoxin F raises concerns as to the possibility of adverse effects of this substance in shellfish consumers, although it should be noted that no toxic effects in humans have been recorded with pinn atoxins or with any other compound of the cyclic imine group.
Pseudo-nitzschia in New Zealand and the role of DNA probes and immunoassays in refining marine biotoxin monitoring programmes.
TLDR
The relative amnesic shellfish poisoning (ASP) risk associated with different species, largely determined by DA immunoassays of cultured isolates, is now used by some regulators to refine risk assessments.
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