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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Morphology and histochemistry of the digestive tract in carnivorous freshwater Hemisorubim platyrhynchos (Siluriformes: Pimelodidae)

Texto completo
Autor(es):
Faccioli, Claudemir Kuhn [1, 2] ; Chedid, Renata Alari [1, 3] ; do Amaral, Antonio Carlos [1] ; Franceschini Vicentini, Irene Bastos [1] ; Vicentini, Carlos Alberto [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] UNESP, Fac Sci, Dept Biol Sci, BR-17033360 Bauru, SP - Brazil
[2] Sao Paulo State Univ, Inst Biosci Letter & Exact Sci, Sao Jose Do Rio Preto, SP - Brazil
[3] UNESP, CAUNESP, Aquaculture Ctr, Jaboticabal, SP - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: Micron; v. 64, p. 10-19, SEP 2014.
Citações Web of Science: 12
Resumo

The aim of this study was to characterize the morphology and histochemistry of the digestive tract of Hemisorubim platyrhynchos, a freshwater carnivorous catfish found in Neotropical region, using gross anatomy, light microscopy and transmission electron microscopy. This species presented a short and tubular esophagus with thick longitudinal folds. The esophageal mucosa was lined by stratified squamous epithelium containing epithelial cells, club cells and also numerous goblet cells, which secreted acidic and neutral mucins to protect and lubricate the epithelium. The stomach was a J-shaped saccular organ consisting of the cardiac, fundic and pyloric regions. The cardiac and fundic regions contained tubular gastric glands, whereas these glands were absent in the pyloric region. The gastric epithelial cells presented apical secretions that predominantly consisted of neutral mucins. The gastric musculature was, therefore, likely designed for retaining prey and the mechanical preparation of food. The intestine consisted of four regions: anterior, middle, posterior and rectal. The anterior intestine possessed thick folds to increase the surface area for absorption, the middle intestine was coiled and the posterior intestine presented thin folds and a thick musculature. The intestinal epithelium consisted mainly of enterocytes and goblet cells. Enterocytes were columnar cells with a PAS-positive brush border that contained lysosomes in the posterior intestine. Goblet cells were more numerous in the posterior intestine and secreted acidic and neutral mucins important for lubricating and protecting the epithelium. The rectum was lined by columnar epithelium with goblet cells and epithelial cells containing apical acidic and neutral mucins. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

Processo FAPESP: 10/02842-0 - Estudo morfológico e histoquímico do tubo digestivo de Hemisorubim platyrhynchos (Valenciennes, 1840)
Beneficiário:Claudemir Kuhn Faccioli
Linha de fomento: Bolsas no Brasil - Mestrado