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Registros recuperados: 6
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Anatomical and histological study of the liver and pancreas of two closely related mountain newts Neurergus microspilotus and N. kaiseri (Amphibia: Caudata: Salamandridae) Rev. Bras. Zool.
Vaissi,Somaye; Parto,Paria; Sharifi,Mozafar.
ABSTRACT Anatomical and histological examinations were conducted on the digestive glands of two closely related mountain newts, Neurergus microspilotus (Nesterov, 1916) and Neurergus kaiseri Schmidt, 1952. In N. microspilotus and N. kaiseri the major digestive glands comprise a very large liver and a small pancreas. In both species the liver has two distinct lobes, right and left. Histologically, the parenchyma of the liver of both species is contained within a thin capsule of fibroconnective tissue. Glycogen deposits and fat storage often dissolve during the routine histological process and produce considerable histological variability. Sinusoids are lined with endothelial cells forming a very thin epithelial sheet, with discontinuous basement membrane....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestive glands; Light microscopy; Hematoxylin-Eosin; Periodic acid-Schiff (PAS).
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100306
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Anatomy and physiology of digestive tract of crustaceans decapods reared in aquaculture ArchiMer
Ceccaldi, H.
The digestive tract of crustacea is complex. It is composed of a shor t oesophagum, a stomach with two bags, and internal wall with appendags specialized in grinding of feeds. These hard mastication pieces represent the gastric mill. Setae, filters included in the stomach structure allow the separation between food particles and liquid compounds. Those one are coming over through filters and more on to the digestive gland tubules or mid gut gland. In this organ, several types of cells play specialized functions: absorption, enzyme secretion, stocking function. Some cells of a new type, with undefined function, may be neurosecretions function, have been described recently. The end of tubules of digestive gland exhibits cells with embryonic characteristics....
Tipo: Text Palavras-chave: Decapoda; Neurosecretion; Feed; Rearing; Digestive glands; Enzymes; Stomach; Crustacean culture.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1486.pdf
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Developpement embryonnaire de Palaemon serratus : Resultats preliminaires ArchiMer
Bellon, H.
The formation of the limbs, the digestive tract, the nervous system, the sensory and hormonal structures begins in this prawn during the embryonic stage C, according to Richard's definition (1974) and is performed at the stage H. The digestive tract differentiates with a caudo-cephalic gradient. The digestive gland is formed at least partially by vitellophages. The C.N.S. appears with a cephalo-caudal gradient and the regions of the eyestalk are quickly differentiated. The organ of Bellonci and the sensory pore appear independently during the stage F. The first neurosecretory cells are detected in the brain during the stage D.
Tipo: Text Palavras-chave: Palaemon serratus; Malacostraca; Digestive glands; Sense organs; Nervous system; Digestive system; Organogenesis; Embryonic development; Organe de Bellonci; Développement embryonnaire; Crevette.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1187.pdf
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Dynamique et enzymologie de la digestion chez l'huitre Crassostrea gigas ArchiMer
Boucaud, C; Lebesnerais, C; Lubet, P; Lihrmann, I.
Feeding experiments carried out on Crassostrea gigas allowed the authors to set up the stages and the timing of the movement of food throughout the digestive tract. Various activities involved in digestion (glycosidases, esterases, and peptidases) were investigated histochemically in the digestive tract in order to localize the sites of absorption and the sites of protein and carbohydrate digestion. An explicative model of the different stages of digestion is proposed.
Tipo: Text Palavras-chave: Crassostrea gigas; Bivalvia; Cytology; Histochemistry; Histology; Digestive system; Enzymatic activity; Digestive glands; Digestion; Enzymes; Transit digestif; Digestion; Huitre; Crassostrea gigas.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1179.pdf
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Etude histoensymologique de la digestion chez Ruditapes philippinarum ArchiMer
Hily, A.
Examinations of alimentary tract and digestive tubules after feeding give evidence of continuous digestive process in juveniles of Ruditapes philippinarum . Histoenzymologic study of digestive tract suggests important intracellular enzymatic activities in stomacal epithelium, digestive gland and intestinal cells. Main part of intracellular digestion occurred in digestive cells by lysosyme associated with vacuolar system.
Tipo: Text Palavras-chave: Ruditapes philippinarum; Bivalvia; Digestive system; Enzymatic activity; Histology; Digestive glands; Digestion; Enzymes digestives; Digestion; Bivalve.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1180.pdf
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Variations des activites digestives en fonction des facteurs du milieu chez les crustaces ArchiMer
Galgani, Francois; Benyamin, Y; Vanworhmoudt, A; Cecaldi, J.
Proteolytic enzymes of hepatopancreas of six species of peneids (Penaeus kerathurus, P. japonicus, P. monodon, P. stylirostris, P. merguiensis and P. vannamei ) have been studied. Some of their physiological variations have been characterised. Increase in acclimation temperature of crustaceans enhances increase of specific activities of proteases. Variations of salinity does not modify specific activities, nor quantities of trypsin, nor electrophoretic patterns of these different proteases.
Tipo: Text Palavras-chave: Penaeus kerathurus; Penaeidae; Malacostraca; Diets; Growth; Larval development; Life cycle; Acclimation; Environmental effects; Digestive glands; Enzymatic activity; Salinity effects; Temperature effects; Enzymes; Endocrinology; Digestion; Développement larvaire; Croissance; Cycle d'intermue; Carboxypeptidase A and B; Leucine aminopeptidase; Chymotrypsin; Trypsine; Enzymes digestives; Homarus ganmarus; Palaemon serratus; P. vannamei; P. merguiensis; P. stylirostris; P. monodon; P. japonicus; Penaeus keratkurus.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1195.pdf
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