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Intense blooms of the benthic dinoflagellate Ostreopsis cf. ovata have occurred in the northern Adriatic Sea since 2006. These blooms are associated with noxious effects on human health and with the mortality of benthic organisms because of the production of palytoxin-like compounds. The O. cf. ovata bloom and its relationships with nutrient concentrations at two stations on the Conero Riviera (northern...
Alexandrium ostenfeldii is a widespread toxic dinoflagellate that has recently bloomed across the Adriatic Sea, seriously threatening both shellfish consumers and aquacultures. In 2007 we reported on preliminary studies carried out on field samples and cultures of A. ostenfeldii. At the time, along with three major spirolides – among which 27-hydroxy-13,19-didesmethyl spirolide C (3) proved to be...
This paper reports on the determination of toxin profile of mussels (Mytilus galloprovincialis) collected in November–December 2003 along the Emilia Romagna coasts (Italy) when a high concentration of Alexandrium ostenfeldii cells was detected in seawater. Detailed liquid chromatography–mass spectrometry (LC–MS) analyses were performed on the crude extracts in both selected ion monitoring (SIM) and...
Massive blooms of the benthic dinoflagellate Ostreopsis ovata Fukuyo have recently occurred along the whole Italian coastlines, both Tyrrhenian and Adriatic, resulting sometimes in benthonic biocenosis sufferings and, occasionally, in human health problems. In this work, two strains of O. ovata collected in 2006 along the Adriatic and Tyrrhenian coastlines and grown in culture were studied to characterize...
The north-western coasts of the Adriatic sea have long been subjected to recurring cases of harmful algae blooms and concomitant mussel contamination. In 1995, yessotoxins (YTXs) were detected for the first time in Adriatic mussels and their presence was subsequently linked to the presence of Protoceratium reticulatum and occasionally Lingulodinium polyedrum in seawater. Since then, farmed molluscs...
This paper reports on the first occurrence of fairly high numbers of Alexandrium ostenfeldii along the Emilia Romagna coasts (Italy). Detailed liquid chromatography–mass spectrometry (LC–MS) analyses of the toxin profile were performed on a strain of the organism collected in November 2003, isolated during the event and grown in culture. Selected ion monitoring (SIM) and multiple reaction monitoring...
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