A histochemical and immunohistochemical study of digestive enzymes and hormones during the larval development of the sea bream, Sparus aurata L.
Histochem J
; 25(6): 430-7, 1993 Jun.
Article
en En
| MEDLINE
| ID: mdl-7689548
The distribution of different hydrolytic enzymes and the localization of the hormones which regulate glucose metabolism during development of the digestive tract of the sea bream, Sparus aurata L., were studied. The yolk sac contains trypsin, glucose-6-phosphatase, ATPases and acid and alkaline phosphatase activities. Positive insulin, glucagon and somatostatin cells were observed in the pancreas and in the lumen of the intestinal tract during endogenous feeding. From hatching until 3 days later, the digestive tract of sea bream larvae shows no enzymatic activities. During exogenous feeding, the activities of the phosphatases and trypsin generally increase, as do the amounts of the hydrolytic enzymes and trypsin, as well as the pancreatic and intestinal hormones. The enzymatic activities gradually decrease from the anterior part towards the posterior part of the digestive tract.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Perciformes
/
Sistema Digestivo
/
Hormonas
Límite:
Animals
Idioma:
En
Revista:
Histochem J
Año:
1993
Tipo del documento:
Article
País de afiliación:
España
Pais de publicación:
Países Bajos