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Etude de la charge énergétique adénylique sur deux espèces aquacoles les crustacés Penaeus stylirostris et Penaeus vannamei et l'huître perlière Pinctada margaritifera ArchiMer
Lemaire, Pierrette.
La charge énergétique adénylique (CEA) est le reflet de l'énergie disponible dans les cellules. Ses variations ont été recherchées comme indice physiologique pour détecter un stress chez les crevettes péneides P.  vannamei et P. stylirosrtis et chez l' huître perlière Pinctada margaririfera. L'étude a porté dans un premier temps, sur la recherche des conditions optimales de préparation des échantillons aussi bien pour les crevettes que pour la nacre et dans un second temps sur des variations dues aux stress. La plupart des stress induits (hypoxie, vibriose) ne provoquent pas de variations significatives de la charge énergétique des crevettes p>0.05. Chez l'huître perlière une émersion à 20°C, 30°C et 40°C(p <0.05) ou une baisse de salinité ( 10%o)...
Tipo: Text Palavras-chave: Aquaculture tropicale; Péneides; Mollusques; Charge énergétique adénylique; Stress.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00436/54785/56239.pdf
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Oyster adenytate energy charge: response to levels of food ArchiMer
Moal, Jeanne; Le Coz, Jean-rene; Samain, Jean-francois; Daniel, Jean-yves; Bodoy, Alain.
Adenylatc Encrgy Charge (AEC) values of Crassostrea gigas (9 and 18 months old) cultured in ponds in Marennes-Oléron Bay (Atlantic coast, France) are reported. Two ponds were loaded with two different initial oyster biomasses in order to obtain different food conditions. The growth of oysters was different in the two ponds which corroborated the effectivences of attaining different food conditions. AEC level was different depending on the pond and was therefore related to food availability per unit oyster biomass. Well-fed oysters exhibited greater AEC values than poorly-fed oysters, throughout thc study. Information on nutritional situations for wild or cultured populations can therefore be obtained by AEC. In cach pond, the seasonal AEC variations were...
Tipo: Text Palavras-chave: Charge énergétique adénylique; Crassostrea gigas; Nutrition; Nucléotides; Adenylate energy charge; Crassostrea gigas; Food; Nucleotides.
Ano: 1991 URL: http://archimer.ifremer.fr/doc/00038/14882/12202.pdf
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