A DEB based analysis of growth and toxin elimination processes in mussels (Mytilus edulis) exposed to Diarrhetic Shellfish Toxins (DST)
| Type | Poster | ||||||||
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| Date | 2013 | ||||||||
| Language | English | ||||||||
| Author(s) | Rosland Rune1, Alunno-Bruscia Marianne 2, 3, Duinker Arne4, Strand Oivind3, Strohmeier Tore3 |
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| Affiliation(s) | 1 : University of Bergen, 5020 Bergen, Norway; 2 : Institute of Marine Research, PO Box 1870 Nordnes, 5817 Bergen, Norway 3 : Ifremer, PFOM-PI, 11 presqu’île du Vivier, 29840 Argenton-en-Landunvez, France; 4 : National Institute of Nutrition and Seafood Research, PO Box 2029 Nordnes 5817 Bergen, Norway |
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| Meeting | DEB 2013 - third DEB symposium, 23-26 April 2013, Texel, Netherlands | ||||||||
| Abstract | A Dynamic Energy Budget(DEB) model was used to analyse growth and toxin elimination processes in musselsthat had been exposed to Diarrhetic Shellfish Toxins (DST). After DST exposure mussels were placed inan experimentalin-situ setup, expected to have low concentrations of toxic phytoplankton, and DST concentrations in mussel tissueswere regularly monitored along with temperature and seston concentration and composition in the water. A one-compartment model for DST concentrations and elimination rate was integrated with the DEB model, assuming that storage and structural compartments absorb DST. The model was used to simulate growth and toxin elimination rates from mussel tissues. Toxin elimination rate was obtained by a calibration between observed and simulated DST concentrations in mussel tissues over the experimental period. The results demonstratethat tissue concentrations of DST decrease temporally due to the dilution effects from growth, but dilution alone wasnot sufficient to explain the observed elimination rates. Thus there seems to be an active elimination processof toxins in mussels, which in conjunction with dilution through growth contributes to the decreasing DST concentrations in mussels over time. | ||||||||
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