IIMYC   23581
INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Unidad Ejecutora - UE
artículos
Título:
Digestive and metabolic profile at the biochemical level of juvenile flounder Paralichthys orbignyanus (Valenciennes, 1839) (Pleuronectiformes: Paralichthyidae)
Autor/es:
RADONIC, M; DEL VALLE, J.C; LÓPEZ. A; MICHIELS, M.S.; LÓPEZ MAÑANES, A,A.
Revista:
Pan-American Journal of Aquatic Sciences
Editorial:
Pablo Muniz
Referencias:
Año: 2016 vol. 11 p. 309 - 323
ISSN:
1809-9009
Resumen:
Abstract; The flounder Paralichthys orbignyanus that spans from Rio de Janeiro (Brazil) toSan Matías Gulf, Argentina has an important ecological role and a great potential use foraquaculture. However, studies on its digestive physiology (i.e. occurrence of digestiveenzymes) as well on energy reserves content in metabolic tissues are lacking. We determined theoccurrence and characteristics of amylase, maltase, sucrase, lipase and aminopeptidase-N indigestive tract of juveniles as an index of the ability to digest dietary glycogenic substrates fromdifferent sources, lipids and for final protein digestion. Glycogen, triglycerides and proteincontent in different tissues were also analyzed to identify storage sites. Presence and distributionin the digestive tract of the enzymes amylase, maltase, sucrase, lipase and N-aminopeptidase, aswell as glycogen, triglycerides and protein suggest that juveniles of P. orbignyanus exhibit anadequate digestive battery to potentially perform complete hydrolysis of various dietarysubstrates and capacity for storage and/or utilization of energy reserves in liver and muscle.Moreover, our results show that juveniles of P. orbignyanus could accept a diet with highcarbohydrates content, which could represent and advantage for its potential application in fishfarming due to the possibility to use cheaper diets.Keywords: flatfishes, digestive enzymes, energy reserves