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Provedor de dados:  ArchiMer
País:  France
Título:  Physiological changes in Pacific oyster Crassostrea gigas exposed to the herpesvirus OsHV-1 μvar
Autores:  Tamayo, David
Corporeau, Charlotte
Petton, Bruno
Quere, Claudie
Pernet, Fabrice
Data:  2014-08
Ano:  2014
Palavras-chave:  Crassostrea gigas
Energetic reserves
Energetic metabolism
Enzyme activity
Resumo:  Since 2008, mass mortality events of Crassostrea gigas have been occurring along the French coast when seawater temperature exceeds 16ºC. These mortality events are related to a particular genotype of the ostreid herpesvirus named OsHV-1 μvar. The present study aimed to detail various physiological aspects underlying the onset of the disease. In the laboratory, both exposed (infected) and naïve (healthy) oysters were maintained at 13.0°C and 20.6ºC. These temperatures were respectively lower and higher than the threshold values of 16°C at which the disease generally occur. At 20.6ºC, exposed oysters were characterized by a reduction in energetic reserves (carbohydrates and triglycerides) together with a decrease in protein content. Sterols levels were lower in exposed oysters than in naïve individuals, irrespective of temperature. Finally, activities of some key enzymes related to energetics were similar in exposed and naïve oysters and did not change with temperature. This result suggests that although energetic reserves were being diminished in infected oysters, their metabolic activities remained similar to that of healthy animals.
Tipo:  Text
Idioma:  Inglês

Editor:  Elsevier Science Bv
Formato:  application/pdf
Fonte:  Aquaculture (0044-8486) (Elsevier Science Bv), 2014-08 , Vol. 432 , P. 304-310
Direitos:  2014 Published by Elsevier B.V.


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