Morphology and Histology of the Pirarucu (Arapaima gigas) Digestive Tract

The present study describes the morphology and histology of the digestive tract of juvenile pirarucu, which is a Neotropical fish species with great potential for aquaculture in the Amazon region. Three size classes of pirarucu juveniles from commercial fish farms were sampled for histological exami...

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Autores principales:	Rodrigues,Ana Paula Oeda, Cargnin-Ferreira,Eduardo
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2017
Materias:	Aquaculture Fish nutrition Digestion Absorption Carnivorous Osteoglossiformes
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000300025
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spelling	oai:scielo:S0717-950220170003000252017-11-20Morphology and Histology of the Pirarucu (Arapaima gigas) Digestive TractRodrigues,Ana Paula OedaCargnin-Ferreira,Eduardo Aquaculture Fish nutrition Digestion Absorption Carnivorous Osteoglossiformes The present study describes the morphology and histology of the digestive tract of juvenile pirarucu, which is a Neotropical fish species with great potential for aquaculture in the Amazon region. Three size classes of pirarucu juveniles from commercial fish farms were sampled for histological examination of the oesophagus, stomach, pyloric caeca, intestine and liver. The morphological and histological features of the pirarucu digestive tract are similar to other carnivorous teleosts and enable the species to ingest, store and digest large food items. Acidic and neutral mucins are secreted by the mucosa of the oesophagus, stomach, pyloric caeca and intestine to protect the mucosal epithelium and to lubricate and facilitate food passage along the digestive tract. Complex transverse folds are predominant in the intestinal mucosa and most likely contribute to optimization of the digestion and nutrient absorption processes, thereby offsetting the relatively short length of the intestine. The exocrine pancreas appears diffuse in the liver and mesentery around the pyloric region of the stomach, pyloric caeca and initial part of the intestine. The digestive tract morphology and thickness become increasingly developed with the size of pirarucu.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.35 n.3 20172017-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000300025en10.4067/S0717-95022017000300025
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Aquaculture Fish nutrition Digestion Absorption Carnivorous Osteoglossiformes
spellingShingle	Aquaculture Fish nutrition Digestion Absorption Carnivorous Osteoglossiformes Rodrigues,Ana Paula Oeda Cargnin-Ferreira,Eduardo Morphology and Histology of the Pirarucu (Arapaima gigas) Digestive Tract
description	The present study describes the morphology and histology of the digestive tract of juvenile pirarucu, which is a Neotropical fish species with great potential for aquaculture in the Amazon region. Three size classes of pirarucu juveniles from commercial fish farms were sampled for histological examination of the oesophagus, stomach, pyloric caeca, intestine and liver. The morphological and histological features of the pirarucu digestive tract are similar to other carnivorous teleosts and enable the species to ingest, store and digest large food items. Acidic and neutral mucins are secreted by the mucosa of the oesophagus, stomach, pyloric caeca and intestine to protect the mucosal epithelium and to lubricate and facilitate food passage along the digestive tract. Complex transverse folds are predominant in the intestinal mucosa and most likely contribute to optimization of the digestion and nutrient absorption processes, thereby offsetting the relatively short length of the intestine. The exocrine pancreas appears diffuse in the liver and mesentery around the pyloric region of the stomach, pyloric caeca and initial part of the intestine. The digestive tract morphology and thickness become increasingly developed with the size of pirarucu.
author	Rodrigues,Ana Paula Oeda Cargnin-Ferreira,Eduardo
author_facet	Rodrigues,Ana Paula Oeda Cargnin-Ferreira,Eduardo
author_sort	Rodrigues,Ana Paula Oeda
title	Morphology and Histology of the Pirarucu (Arapaima gigas) Digestive Tract
title_short	Morphology and Histology of the Pirarucu (Arapaima gigas) Digestive Tract
title_full	Morphology and Histology of the Pirarucu (Arapaima gigas) Digestive Tract
title_fullStr	Morphology and Histology of the Pirarucu (Arapaima gigas) Digestive Tract
title_full_unstemmed	Morphology and Histology of the Pirarucu (Arapaima gigas) Digestive Tract
title_sort	morphology and histology of the pirarucu (arapaima gigas) digestive tract
publisher	Sociedad Chilena de Anatomía
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000300025
work_keys_str_mv	AT rodriguesanapaulaoeda morphologyandhistologyofthepirarucuarapaimagigasdigestivetract AT cargninferreiraeduardo morphologyandhistologyofthepirarucuarapaimagigasdigestivetract
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Morphology and Histology of the Pirarucu (Arapaima gigas) Digestive Tract

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