Data/hora: 11/06/2024 12:39:15

Provedor de dados: 	5	
País: 	France	
Título: 	Viability, growth and toxicity of Alexandrium catenella and Alexandrium minutum (Dinophyceae) following ingestion and gut passage in the oyster Crassostrea gigas	
Autores: 	Laabir, Mohamed; Amzil, Zouher; Lassus, Patrick; Masseret, Estelle; Tapilatu, Yosmina; De Vargas, Romain; Grzebyk, Daniel.	
Data: 	2007	
Ano: 	2007	
Palavras-chave: 	Paralytic shellfish poisoning; Oysters; Cysts; Alexandrium minutum; Alexandrium catenella.	
Resumo: 	Adult oysters Crassostrea gigas were experimentally fed with Alexandrium catenella and Alexandrium minutum which are responsible for recurrent toxic blooms in French coastal waters. C. gigas produced faeces and pseudofaeces containing intact and viable temporary pellicular cysts of these two Paralytic toxin producing species. When incubated in favourable conditions, these pellicular cysts were able to germinate at high rates (between 74 and 94%) and the resulting vegetative cells divided with growth rates close to the non-ingested cells (control). The toxin profile of the vegetative cells originated from the germinated temporary cysts was analyzed by liquid chromatography/ fluorescence detection. Total toxin content of newly germinated cells was lower than that of cultured cells. Besides, cell contents of C2, B1, B2 and dcGTX3 toxins featured some changes. Our results suggest that the increased spreading of toxic dinoflagellates through the transfer of shellfish from contaminated towards pristine coastal areas cannot be ruled out. We also suggest that pellicular cysts and newly germinated cells could represent a potential way for the transfer of paralytic toxins toward the higher trophic levels.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/2007/publication-2622.pdf

DOI:10.1051/alr:2007015	
Editor: 	EDP Sciences	
Relação: 	http://archimer.ifremer.fr/doc/00000/2622/	
Formato: 	application/pdf	
Fonte: 	Aquatic Living Resources (0990-7440) (EDP Sciences), 2007 , Vol. 20 , N. 1 , P. 51-57	
Fonte: 	EDP Sciences, IFREMER, IRD 2007