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    Seasonality and toxin production of Pyrodinium bahamense in a Red Sea lagoon

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    Type
    Article
    Authors
    Banguera Hinestroza, Eulalia
    Eikrem, W.
    Mansour, H.
    Solberg, Ingrid
    Curdia, Joao
    Holtermann, Karie Ellen
    Edvardsen, B.
    Kaartvedt, Stein cc
    KAUST Department
    Biological and Environmental Sciences and Engineering (BESE) Division
    Marine Science Program
    Office of the VP
    Red Sea Research Center (RSRC)
    Date
    2016-03-19
    Online Publication Date
    2016-03-19
    Print Publication Date
    2016-05
    Permanent link to this record
    http://hdl.handle.net/10754/621782
    
    Metadata
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    Abstract
    Harmful algal blooms of the dinoflagellate Pyrodinium bahamense have caused human and economic losses in the last decades. This study, for the first time, documents a bloom of P. bahamense in the Red Sea. The alga was recurrently present in a semi-enclosed lagoon throughout nearly 2 years of observations. The highest cell densities (104-105 cells L-1) were recorded from September to beginning of December at temperatures and salinities of ~26-32 °C and ~41, respectively. The peak of the bloom was recorded mid-November, before a sharp decrease in cell numbers at the end of December. Minimum concentrations in summer were at ~103 cells L-1. A saxitoxin ELISA immunoassay of cultures and water samples confirmed the toxicity of the strain found in the Red Sea. Moreover, a gene expression analysis of the saxitoxin gene domain SxtA4 showed that transcript production peaked at the culmination of the bloom, suggesting a relation between transcript production, sudden cells increment-decline, and environmental factors. © 2016 Elsevier B.V.
    Citation
    Banguera-Hinestroza E, Eikrem W, Mansour H, Solberg I, Cúrdia J, et al. (2016) Seasonality and toxin production of Pyrodinium bahamense in a Red Sea lagoon. Harmful Algae 55: 163–171. Available: http://dx.doi.org/10.1016/j.hal.2016.03.002.
    Sponsors
    We thank Nikolaos Zarokanellos, Francis Luke Mallon and the CMOR team at Kaust for help and support, Ali R. Behzad and Ohoud Mohammed Eid Alharbi from the Imaging and Characterization lab at Kaust for their invaluable collaboration during the imagining process, and the core lab facilities; specially Sadhasivam Perumal for his valuable support and guide. This study was funded by King Abdullah University of Science and Technology (KAUST).[SS]
    Publisher
    Elsevier BV
    Journal
    Harmful Algae
    DOI
    10.1016/j.hal.2016.03.002
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.hal.2016.03.002
    Scopus Count
    Collections
    Articles; Biological and Environmental Sciences and Engineering (BESE) Division; Red Sea Research Center (RSRC); Marine Science Program; Plankton Genomics, part of the Global Ocean Genome Project

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