Kinetics of accumulation and transformation of paralytic shellfish toxins in the blue mussel Mytilus galloprovincialis
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Palabras claveParalytic shellfish poisoning
Paralytic shellfish toxins
Mussels (Mytilus galloprovincialis) were fed cultures of the Paralytic Shellfish Poisoning agent Alexandrium minutum (Strain AL1V) for a 15-day period and, for the next 12 days, they were fed the non-toxic species Tetraselmis suecica, in order to monitor the intoxication/detoxification process. The toxin content in the bivalve was checked daily throughout the experiment. During the time-course of the experiment, the toxin profile of the bivalves changed substantially, showing increasingly greater differences from the proportions found in the toxigenic dinoflagellate used as food. The main processes involved in the accumulation of toxins and in the variation of the toxic profiles were implemented in a series of numerical models and the usefulness of those models to describe the actual intoxication/detoxification kinetics was assessed. Models that did not include transformations between toxins were unable to describe the kinetics, even when different detoxification rates were allowed for ...
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