Morphology, Histology and Histochemistry of the Digestive System of South American Catfish (Rhamdia quelen)

The purpose of the present work was the anatomical, histo logical and histochemical description oí Rhamdia quelen juvenile digestive system. Samples of gut were fixed, dehydrated and included in paraffin and then stained with haematoxylin and eosin. For the identification and differentiation of muco...

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Autores principales:	Hernández,D. R, Pérez Gianeselli,M, Domitrovic,H. A
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2009
Materias:	Rhamdia quelen Histology Digestive System
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000100019
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spelling	oai:scielo:S0717-950220090001000192009-06-24Morphology, Histology and Histochemistry of the Digestive System of South American Catfish (Rhamdia quelen)Hernández,D. RPérez Gianeselli,MDomitrovic,H. A Rhamdia quelen Histology Digestive System The purpose of the present work was the anatomical, histo logical and histochemical description oí Rhamdia quelen juvenile digestive system. Samples of gut were fixed, dehydrated and included in paraffin and then stained with haematoxylin and eosin. For the identification and differentiation of mucosubstances the preparations were treated with Periodic Acid Schiff, Alcian Blue pH 0,4 and 2,5 andPAS/AB pH 2,5. Anatomical details of the oesophagus were like a short tube with primary and secondary mucous folds. The stratified epithelium is composed of three cellular types: small cells, abundant goblet cells with acid and neutral mucosubstances (MS) and large acid cells. The stomach is J-shaped and its mucosa presents broad and deep folds in relaxing state. Histologically, the stomach shows three different regions: cardiac, fundic and pyloric region. The luminal surface of the epithelium consists of a layer of secretory columnar cells of neutral MS. Tubuloacinar glands were surrounded by connective and muscular smooth fibers bundle. The intestine extends from the stomach until the anus, and four different sections can be distinguished: ascending, descending, convoluta and terminal straight. It was identified a simple columnar epithelium mainly composed by two cellular types: absorptive cell and goblet cell neutral MS secretory. On the basis of the anatomical and histo logical study carried out, we conclude that R. quelen presents an alimentary canal compatible with species that possess omnivorous nutritious habits.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=S0717-95022009000100019en10.4067/S0717-95022009000100019
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Rhamdia quelen Histology Digestive System
spellingShingle	Rhamdia quelen Histology Digestive System Hernández,D. R Pérez Gianeselli,M Domitrovic,H. A Morphology, Histology and Histochemistry of the Digestive System of South American Catfish (Rhamdia quelen)
description	The purpose of the present work was the anatomical, histo logical and histochemical description oí Rhamdia quelen juvenile digestive system. Samples of gut were fixed, dehydrated and included in paraffin and then stained with haematoxylin and eosin. For the identification and differentiation of mucosubstances the preparations were treated with Periodic Acid Schiff, Alcian Blue pH 0,4 and 2,5 andPAS/AB pH 2,5. Anatomical details of the oesophagus were like a short tube with primary and secondary mucous folds. The stratified epithelium is composed of three cellular types: small cells, abundant goblet cells with acid and neutral mucosubstances (MS) and large acid cells. The stomach is J-shaped and its mucosa presents broad and deep folds in relaxing state. Histologically, the stomach shows three different regions: cardiac, fundic and pyloric region. The luminal surface of the epithelium consists of a layer of secretory columnar cells of neutral MS. Tubuloacinar glands were surrounded by connective and muscular smooth fibers bundle. The intestine extends from the stomach until the anus, and four different sections can be distinguished: ascending, descending, convoluta and terminal straight. It was identified a simple columnar epithelium mainly composed by two cellular types: absorptive cell and goblet cell neutral MS secretory. On the basis of the anatomical and histo logical study carried out, we conclude that R. quelen presents an alimentary canal compatible with species that possess omnivorous nutritious habits.
author	Hernández,D. R Pérez Gianeselli,M Domitrovic,H. A
author_facet	Hernández,D. R Pérez Gianeselli,M Domitrovic,H. A
author_sort	Hernández,D. R
title	Morphology, Histology and Histochemistry of the Digestive System of South American Catfish (Rhamdia quelen)
title_short	Morphology, Histology and Histochemistry of the Digestive System of South American Catfish (Rhamdia quelen)
title_full	Morphology, Histology and Histochemistry of the Digestive System of South American Catfish (Rhamdia quelen)
title_fullStr	Morphology, Histology and Histochemistry of the Digestive System of South American Catfish (Rhamdia quelen)
title_full_unstemmed	Morphology, Histology and Histochemistry of the Digestive System of South American Catfish (Rhamdia quelen)
title_sort	morphology, histology and histochemistry of the digestive system of south american catfish (rhamdia quelen)
publisher	Sociedad Chilena de Anatomía
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000100019
work_keys_str_mv	AT hernandezdr morphologyhistologyandhistochemistryofthedigestivesystemofsouthamericancatfishrhamdiaquelen AT perezgianesellim morphologyhistologyandhistochemistryofthedigestivesystemofsouthamericancatfishrhamdiaquelen AT domitrovicha morphologyhistologyandhistochemistryofthedigestivesystemofsouthamericancatfishrhamdiaquelen
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Morphology, Histology and Histochemistry of the Digestive System of South American Catfish (Rhamdia quelen)

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