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| Prudence, Marie. |
| Two amylase genes, A and B, from the oyster Crassostrea gigas were characterized. Using PCR-RFLP, 6 and 4 alleles, respectively, were described for the amylase genes A and B. The roles of A and B amylase genes were investigated experimentally. They are expressed during larval and adult stages, and A transcripts are more abundant than B. The A transcript increases significantly with temperature, in high trophic conditions. However, A and B transcript levels do not change when food quantity increases although amylase activity augments. The level of B is correlated with dietary starch quantities, whereas the amount of A appears to remain constant ; simultaneously amylase activity decreases and the KM increases. These results suggest that expression of B is... |
| Tipo: Text |
Palavras-chave: Enzymatic analyse; Genetic polymorphism; Genes; Nutrition; Growth; Environmental effects; Oysters; Amylases; Amylases; Analyse enzymatique; Polymorphisme génétique; Gènes; Nutrition; Croissance; Effets de l'environnement; Huîtres; Amylases; Amylases. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/these-1700.pdf |
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| Casuso, A.; Rodríguez-Viera, L.; Perera, E.. |
| El conocimiento de las capacidades digestivas de determinada especie es un aspecto clave para el establecimiento de dietas y estrategias de alimentación en cautiverio. Los carbohidratos son un macronutriente importante en la dieta y además, desde el punto de vista acuícola, son una fuente de energía barata. Sin embargo, existe un desconocimiento total de la digestión de carbohidratos en la langosta espinosa Panulirus argus. En el presente trabajo se evaluó la digestión in vitro de diferentes fuentes de carbohidratos por las enzimas digestivas de P. argus. El almidón de arroz y los almidones gelatinizados de papa y de maíz fueron los sustratos que presentaron mayores tasas de hidrólisis entre todas las fuentes probadas, seguidos por la harina de... |
| Tipo: Journal Contribution |
Palavras-chave: Spiny lobster fisheries; Amylases. |
| Ano: 2013 |
URL: http://hdl.handle.net/1834/5251 |
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| Plá,A.; Alonso,E.; Batista-Viera,F.; Franco Fraguas,L.. |
| The presence of carbohydrate-binding proteins, namely lectins, ß-galactosidases and amylases, was determined in aqueous extracts of plants collected in Uruguay. Twenty-six extracts were prepared from 15 Uruguayan plants belonging to 12 Phanerogam families. Among them, 18 extracts caused hemagglutination (HAG) that was inhibited by mono- and disaccharides in 13 cases, indicating the presence of lectins. The other 8 extracts did not cause any HAG with the four systems used to detect HAG activity (rabbit and mouse red cells, trypsin-treated rabbit and mouse red cells). For the extracts prepared from Solanum commersonii, HAG activity and HAG inhibition were similar for those prepared from tubers, leaves and fruits, with the chitocompounds being responsible for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phanerogam families; Uruguayan plants; Asialofetuin-Sepharose; Carbohydrate-binding proteins; Lectins; SS-Galactosidases; Amylases. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000700005 |
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