Comparative study on differential accumulation of PSP toxins between cockle (Acanthocardia tuberculatum) and sweet clam (Callista chione)
| Autor: | Mohamed Blaghen, Mohamed Loutfi, Rachid Amanhir, Paulo Vale, Reqia Sagou, Hamid Taleb |
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| Rok vydání: | 2005 |
| Předmět: |
0106 biological sciences
animal structures Zoology Toxicology medicine.disease_cause 01 natural sciences 03 medical and health sciences Acanthocardia Species Specificity medicine Animals Tissue Distribution 14. Life underwater Cockle Paralytic shellfish poisoning Mollusca Chromatography High Pressure Liquid 0303 health sciences biology Toxin 010604 marine biology & hydrobiology 030302 biochemistry & molecular biology biology.organism_classification medicine.disease Gymnodinium catenatum Shellfish poisoning Bivalvia Fishery Morocco Dinoflagellida Body Burden Seasons Saxitoxin |
| Zdroj: | Toxicon : official journal of the International Society on Toxinology. 46(6) |
| ISSN: | 0041-0101 |
| Popis: | At the western Mediterranean coast of Morocco, the cockle ( Acanthocardia tuberculatum ) contained persistent high levels of paralytic shellfish toxins for several years, while other bivalve molluscs such as sweet clam ( Callista chione ) from the same vicinity were contaminated seasonally to a much lesser extent. In order to understand the causes of this prolonged contamination, a comparative study on PSP decontamination between sweet clam and cockle was conducted from November 2001 untill June 2002. PSP toxicity was analysed by automated pre-column oxidation (Prechromatographic oxidation and LC-FD) in several organs of both species, namely digestive gland, foot, gill, mantle, muscle and siphon for sweet clams. The results showed that cockle sequester PSP toxins preferably in non-visceral organs (Foot, gill and mantle) contrary to sweet clam that sequester them in visceral tissues (digestive gland). The toxin profile of cockle organs indicated dominance of dcSTX, whereas sweet clam tissues contained especially C-toxins. Substantial differences in toxin profile between cockle and sweet clam, from the same area as well as from the composition of PSP toxin producer, Gymnodinium catenatum , confirm the bioconversion of PSP toxins in cockle. |
| Databáze: | OpenAIRE |
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