PMID: 3196475Nov 1, 1988Paper

Seasonal, geographic and individual variation of okadaic acid content in cultivated mussels in Sweden

APMIS : Acta Pathologica, Microbiologica, Et Immunologica Scandinavica
L EdeboR Thompson

Abstract

In Western Europe the dinoflagellate toxin, okadaic acid (OA) has been the main cause of diarrheic shellfish poisoning (DSP). Chemical determination of OA in mussels by homogenization of the hepatopancreas, extraction, purification, reaction with 9-anthryldiazomethane (ADAM), HPLC-separation, and fluorometric quantification has been used for weekly monitoring of mussel growing farms and to control harvested mussels. Within a week, substantial rises (from 0.41 to 5.4 micrograms OA/g hepatopancreas) as well as great reductions (from 7.2 to 1.8 micrograms/g hepatopancreas) were recorded. The rapid rise implies that weekly sampling is not sufficient to ensure that mussels are free from toxic levels of OA. The rapid decrease reveals that efficient toxin clearance mechanisms exist in the mussels. Substantial OA clearance occurs also at low temperatures (1.4-3 degrees C). Within a mussel growing site the OA concentrations could differ considerably between adjacent mussels (0.63 and 4.2 micrograms OA/g hepatop.) and even more between mussels grown at different depths along the same rope (0.63 and 10 micrograms OA/g hepatop.). These data emphasize the importance of sampling in studies on DST in mussels. Great differences between the dif...Continue Reading

Citations

May 1, 1992·Toxicon : Official Journal of the International Society on Toxinology·A TubaroR Della Loggia
Nov 1, 1994·Toxicon : Official Journal of the International Society on Toxinology·R DraisciA Stacchini
Mar 1, 1996·Toxicon : Official Journal of the International Society on Toxinology·E P CarmodyS S Kelly
Feb 27, 2001·Toxicon : Official Journal of the International Society on Toxinology·H RamstadT Aune
Jun 19, 2004·Food Additives and Contaminants·K Jørgensen, L B Jensen
Oct 30, 1992·Journal of Chromatography·B Luckas
Dec 18, 2007·Fish & Shellfish Immunology·Davide MalagoliEnzo Ottaviani
Nov 1, 1988·APMIS : Acta Pathologica, Microbiologica, Et Immunologica Scandinavica·L EdeboS Allenmark
Jun 25, 2008·Toxicon : Official Journal of the International Society on Toxinology·A Franchini, Enzo Ottaviani
Apr 21, 2021·Harmful Algae·Bengt KarlsonSanna Suikkanen

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