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dc.contributor.authorBerdalet, Elisa-
dc.contributor.authorVila, Magda-
dc.contributor.authorAlechaga, Élida-
dc.contributor.authorMoyano, Encarnación-
dc.contributor.authorEstrada, Marta-
dc.contributor.authorFarràs, Jaume-
dc.contributor.authorViure Feliu, Laia-
dc.contributor.authorHernández-Llamas, Soraya-
dc.contributor.authorAbós-Herràndiz, Rafael-
dc.identifier.citationICHA : The 17th International Conference on Harmful Algae : Abstract Book: 72 (2016)-
dc.description17th International Conference on Harmful Algae (ICHA), 9-14 October 2016, Florianópolis, Santa Catarina, Brazil.-- 1 page-
dc.description.abstractOutbreaks of the toxic benthic dinoflagellate Ostreopsis cf. ovata are recurrent in the summer-fall season in Sant Andreu de Llavaneres beach (40 km North of Barcelona), NW Mediterranean. These blooms have been related to massive macrofauna mortalities and respiratory symptoms and general malaise in people exposed to marine aerosols. We characterized the toxinology profile of the epiphytic O. cf. ovata population blooming in the summer of 2015 using ultra-high performance reversed phase liquid chromatography coupled to electrospray-high resolution mass spectrometry (UHPLC-HRMS) optimized protocols. Overall, total toxin cellular content was below 30 pg·cell-1 along the bloom, although it exceptionally peaked at the transition from the exponential to the stationary phase (up to 300 - 700 pg·cell-1). On average, ovatoxin a (OVTX-a) accounted for the 75% of the total toxin content, followed by OVTX-b (22%) while OVTXs c to g and isobaric palytoxin (PLTX) were minor components. PLTX, up to 2.5 pg·cell-1 (corresponding to < 0.5% of the total content), was only present coinciding with maximum O. cf. ovata cell abundances (ca. 7-10·105 cells·g-1 of macroalgae fresh weight). These results are contributing to shed light on the direct implication of these biotoxins in the observed symptoms in humans and the ecosystem, and to ascertain the potential risk of seafood intoxication in the area-
dc.titleTemporal variability of the toxin profile of Ostreopsis cf. ovata along a natural bloom in the NW Mediterranean-
dc.typecomunicación de congreso-
dc.description.versionPeer Reviewed-
Appears in Collections:(ICM) Comunicaciones congresos
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