Histoarchitectural Features of the Hepatopancreas of the Amazon River Prawn Macrobrachium amazonicum

In decapod crustaceans, the digestive gland is concerned with the digestion, absorption of nutrients, the storage of reserves and excretion. The metabolism and the histological and histochemical changes of the hepatopancreas are observed in response to physiological demands as moult, reproduction, d...

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Autores principales:	Franceschini-Vicentini,Irene Bastos, Ribeiro,Karina, Papa,Luciene Patrici, Marques Junior,Julio, Vicentini,Carlos Alberto, Valenti,Patricia Maria Contente Moraes
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2009
Materias:	Hepatopancreas Morphology Decapoda Macrobrachium amazonicum
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000100022
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spelling	oai:scielo:S0717-950220090001000222009-06-24Histoarchitectural Features of the Hepatopancreas of the Amazon River Prawn Macrobrachium amazonicumFranceschini-Vicentini,Irene BastosRibeiro,KarinaPapa,Luciene PatriciMarques Junior,JulioVicentini,Carlos AlbertoValenti,Patricia Maria Contente Moraes Hepatopancreas Morphology Decapoda Macrobrachium amazonicum In decapod crustaceans, the digestive gland is concerned with the digestion, absorption of nutrients, the storage of reserves and excretion. The metabolism and the histological and histochemical changes of the hepatopancreas are observed in response to physiological demands as moult, reproduction, digestive process. Thus the hepatopancreas structure should be recognized to provide important morphological information to future studies involving the nutrition requirements of freshwater prawn culture. In this study, second-generation Macrobrachium amazonicum produced from wild broodstock collected in the state of Para in Brazil were used. Thirty adult male and female M. amazonicum were selected and randomly transferred to five experimental units for macroscopic and microscopic studies. The hepatopancreas of M. amazonicum is a large, yellowish-brown, compact organ, which occupies much of the cephalothoracic cavity. It has right and left halves that are enclosed together in a laminar connective tissue capsule, and at the same time they are separated by an interstitial connective tissue. The two halves are thereby called the right and left hepatopancreatic lobes. The principal tubule gives rise to four secondary tubules at each hepatopancreatic lobe. The morphological and functional unit consists of a blind-ended hepatopancreatic tubule, considered in the present study as the hepatopancreatic lobule. Each hepatopancreatic tubule can be subdivided into distal, medial and proximal zones. The hepatopancreatic tubule is lined by a pseudostratified epithelium that consists of five different cell types, which include the E-cell (embryonic), F-cell (fibrillar), B-cell (blister-like), R-cell (resorptive) and M-cell (midgut or basal). It is important to emphasize that the function of each cell type in the hepatopancreas during the digestive cycle is not yet established for decapods.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.27 n.1 20092009-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000100022en10.4067/S0717-95022009000100022
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Hepatopancreas Morphology Decapoda Macrobrachium amazonicum
spellingShingle	Hepatopancreas Morphology Decapoda Macrobrachium amazonicum Franceschini-Vicentini,Irene Bastos Ribeiro,Karina Papa,Luciene Patrici Marques Junior,Julio Vicentini,Carlos Alberto Valenti,Patricia Maria Contente Moraes Histoarchitectural Features of the Hepatopancreas of the Amazon River Prawn Macrobrachium amazonicum
description	In decapod crustaceans, the digestive gland is concerned with the digestion, absorption of nutrients, the storage of reserves and excretion. The metabolism and the histological and histochemical changes of the hepatopancreas are observed in response to physiological demands as moult, reproduction, digestive process. Thus the hepatopancreas structure should be recognized to provide important morphological information to future studies involving the nutrition requirements of freshwater prawn culture. In this study, second-generation Macrobrachium amazonicum produced from wild broodstock collected in the state of Para in Brazil were used. Thirty adult male and female M. amazonicum were selected and randomly transferred to five experimental units for macroscopic and microscopic studies. The hepatopancreas of M. amazonicum is a large, yellowish-brown, compact organ, which occupies much of the cephalothoracic cavity. It has right and left halves that are enclosed together in a laminar connective tissue capsule, and at the same time they are separated by an interstitial connective tissue. The two halves are thereby called the right and left hepatopancreatic lobes. The principal tubule gives rise to four secondary tubules at each hepatopancreatic lobe. The morphological and functional unit consists of a blind-ended hepatopancreatic tubule, considered in the present study as the hepatopancreatic lobule. Each hepatopancreatic tubule can be subdivided into distal, medial and proximal zones. The hepatopancreatic tubule is lined by a pseudostratified epithelium that consists of five different cell types, which include the E-cell (embryonic), F-cell (fibrillar), B-cell (blister-like), R-cell (resorptive) and M-cell (midgut or basal). It is important to emphasize that the function of each cell type in the hepatopancreas during the digestive cycle is not yet established for decapods.
author	Franceschini-Vicentini,Irene Bastos Ribeiro,Karina Papa,Luciene Patrici Marques Junior,Julio Vicentini,Carlos Alberto Valenti,Patricia Maria Contente Moraes
author_facet	Franceschini-Vicentini,Irene Bastos Ribeiro,Karina Papa,Luciene Patrici Marques Junior,Julio Vicentini,Carlos Alberto Valenti,Patricia Maria Contente Moraes
author_sort	Franceschini-Vicentini,Irene Bastos
title	Histoarchitectural Features of the Hepatopancreas of the Amazon River Prawn Macrobrachium amazonicum
title_short	Histoarchitectural Features of the Hepatopancreas of the Amazon River Prawn Macrobrachium amazonicum
title_full	Histoarchitectural Features of the Hepatopancreas of the Amazon River Prawn Macrobrachium amazonicum
title_fullStr	Histoarchitectural Features of the Hepatopancreas of the Amazon River Prawn Macrobrachium amazonicum
title_full_unstemmed	Histoarchitectural Features of the Hepatopancreas of the Amazon River Prawn Macrobrachium amazonicum
title_sort	histoarchitectural features of the hepatopancreas of the amazon river prawn macrobrachium amazonicum
publisher	Sociedad Chilena de Anatomía
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000100022
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Histoarchitectural Features of the Hepatopancreas of the Amazon River Prawn Macrobrachium amazonicum

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