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Over the past 15 years or so, several Scottish harbour seal (Phoca vitulina) populations have declined in abundance and several factors have been considered as possible causes, including toxins from harmful algae. Here we explore whether a link could be established between two groups of toxins, domoic acid (DA) and saxitoxins (STXs), and the decline in the harbour seal populations in Scotland. We...
Here, we report different lipophilic toxins (LTs) detected by LC–MS/MS in Mediterranean mussels (Mytilus galloprovincialis) collected through 2012 in Todos Santos Bay, northwest Baja California, Mexico. The concentration of okadaic acid (OA), dinophysistoxin 2 (DTX2), and pectenotoxin 2 (PTX2) reached 500 μg kg −1 during July and increased to 1647 μg kg −1 in October. These toxins...
Both pre- and post-column oxidation liquid chromatography methods with fluorescence detection are available for detecting paralytic shellfish toxins. Each method has been evaluated in multiple laboratories and validated as a potential alternative to the mouse bioassay. This communication compares the advantages and limitations of both methods. For a given laboratory, the selection of either method...
As the official control laboratory for biotoxin testing in England, Wales and Scotland, Cefas employs two approaches for the detection of Paralytic Shellfish Poisons (PSP) in bivalve shellfish: a qualitative HPLC method for oysters, whole king scallops and cockles (with PSP bioassay confirmation of positive HPLC samples) with subsequent quantitation of positive samples by mouse bioassay and a quantitative...
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