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Abstract
A strain of Aspergillus fumigatus has been isolated from sediments of a mussel bed.
When cultured in hyper saline conditions (with sea-water), it produces a cytotoxic
and immunosuppressive toxin, gliotoxin, which is excreted in an exudate. In order
to know if this toxin could represent a risk for shellfish consumers, an experiment
of bioaccumulation of gliotoxin in mussel has been carried out. After 6 days of contamination,
toxin was accumulated in the meat of the mussels, at a level up to 2.9 microg/mg of
extract weight, with a mode of contamination different to the classical digestive
process described for a majority of marine toxins, but similar to the contamination
mode of domoic acid.