Morphology, histology and histochemistry of the digestive system of south american catfish (Rhamdia quelen)

The purpose of the present work was the anatomical, histological and histochemical description of 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 mucos...

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Autores principales: Hernández, David Roque, Pérez Gianeselli, Mónica Raquel, Domitrovic, Hugo Alberto
Formato: Artículo
Lenguaje:Inglés
Publicado: Sociedad Chilena de Anatomía 2024
Materias:
Rhamdia quelen
Histology
Digestive system
Acceso en línea:http://repositorio.unne.edu.ar/handle/123456789/53061
Aporte de:
RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE) de Universidad Nacional del Nordeste
id I48-R184-123456789-53061
record_format dspace
spelling I48-R184-123456789-530612024-10-23T10:52:15Z Morphology, histology and histochemistry of the digestive system of south american catfish (Rhamdia quelen) Morfología, Histología e Histoquímica del Tubo Digestivo del Bagre Sudamericano (Rhamdia quelen) Hernández, David Roque Pérez Gianeselli, Mónica Raquel Domitrovic, Hugo Alberto Rhamdia quelen Histology Digestive system The purpose of the present work was the anatomical, histological and histochemical description of 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 and PAS/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 histological study carried out, we conclude that R. quelen presents an alimentary canal compatible with species that possess omnivorous nutritious habits. 2024-02-27T15:19:01Z 2024-02-27T15:19:01Z 2009 Artículo Hernández, David Roque, Pérez Gianeselli, Mónica Raquel y Domitrovic, Hugo Alberto, 2009. Morphology, histology and histochemistry of the digestive system of south american catfish (Rhamdia quelen). International Journal Morphology. Tamuco: Sociedad Chilena de Anatomía, vol. 27, no. 1, p.105-111. E-ISSN 0717-9502. 0717-9367 http://repositorio.unne.edu.ar/handle/123456789/53061 eng openAccess http://creativecommons.org/licenses/by-nc-nd/2.5/ar/ application/pdf p. 105-111 application/pdf Sociedad Chilena de Anatomía International Journal Morphology, 2009, vol. 27, no. 1, p. 105-111.
institution Universidad Nacional del Nordeste
institution_str I-48
repository_str R-184
collection RIUNNE - Repositorio Institucional de la Universidad Nacional del Nordeste (UNNE)
language Inglés
topic Rhamdia quelen
Histology
Digestive system
spellingShingle Rhamdia quelen
Histology
Digestive system
Hernández, David Roque
Pérez Gianeselli, Mónica Raquel
Domitrovic, Hugo Alberto
Morphology, histology and histochemistry of the digestive system of south american catfish (Rhamdia quelen)
topic_facet Rhamdia quelen
Histology
Digestive system
description The purpose of the present work was the anatomical, histological and histochemical description of 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 and PAS/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 histological study carried out, we conclude that R. quelen presents an alimentary canal compatible with species that possess omnivorous nutritious habits.
format Artículo
author Hernández, David Roque
Pérez Gianeselli, Mónica Raquel
Domitrovic, Hugo Alberto
author_facet Hernández, David Roque
Pérez Gianeselli, Mónica Raquel
Domitrovic, Hugo Alberto
author_sort Hernández, David Roque
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 2024
url http://repositorio.unne.edu.ar/handle/123456789/53061
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AT perezgianesellimonicaraquel morphologyhistologyandhistochemistryofthedigestivesystemofsouthamericancatfishrhamdiaquelen
AT domitrovichugoalberto morphologyhistologyandhistochemistryofthedigestivesystemofsouthamericancatfishrhamdiaquelen
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AT perezgianesellimonicaraquel morfologiahistologiaehistoquimicadeltubodigestivodelbagresudamericanorhamdiaquelen
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