Ultrastructure of the digestive tract in neotropical carnivorous catfish Hemisorubim platyrhynchos (Valenciennes, 1840) (Siluriformes, Pimelodidae)

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorFaccioli, Claudemir Kuhn
dc.creatorChedid, Renata Alari
dc.creatorMori, Ricardo Hideo
dc.creatorAmaral, Antônio Carlos do
dc.creatorVicentini, Irene Bastos Franceschini
dc.creatorVicentini, Carlos Alberto
dc.date2015-12-07T15:39:08Z
dc.date2016-10-25T21:24:00Z
dc.date2015-12-07T15:39:08Z
dc.date2016-10-25T21:24:00Z
dc.date2015-10-07
dc.date.accessioned2017-04-06T09:32:17Z
dc.date.available2017-04-06T09:32:17Z
dc.identifierScanning, 2015.
dc.identifier1932-8745
dc.identifierhttp://hdl.handle.net/11449/131632
dc.identifierhttp://acervodigital.unesp.br/handle/11449/131632
dc.identifier10.1002/sca.21275
dc.identifier26445300
dc.identifierhttp://dx.doi.org/10.1002/sca.21275
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/942172
dc.descriptionThe surface of the digestive tract of Hemisorubim platyrhynchos was analyzed by scanning electron microscopy. Morphometric studies by transmission electron microscopy were performed to analysis the intestinal microvilli. H. platyrhynchos is a Neotropical carnivorous freshwater catfish featuring a short digestive tract composed of a short esophagus, saccular stomach, and intestine with four regions: anterior, middle, posterior, and rectal. The esophageal surface is constituted by fingerprint-like microridges that anchor the mucosubstances secreted by goblet cells facilitating the passage of food. Goblet cells present the opening to the esophageal lumen, between the microridges. Club cells are in basal epithelium and they do not present the opening to the lumen. The gastric luminal surface shows polygon-shaped epithelial cells which secrete granules by exocytose to protect the gastric surface. The intestinal luminal surface reveals folds that are thicker in the anterior intestine than in the posterior intestine, increasing the absorptive surface area. The intestinal surface presents the microvilli of enterocytes and the opening of goblet cells. The morphometric analysis showed that the microvilli are longer in the anterior intestine, significantly decreasing towards the posterior intestine. The microvilli surface area significantly is greater in the anterior and middle intestine than in the posterior intestine. Numerous openings of goblet cells were observed in the posterior intestine acting in epithelial protection and lubrication. SCANNING 9999:1-8, 2015. © 2015 Wiley Periodicals, Inc.
dc.languageeng
dc.publisherWiley-Blackwell
dc.relationScanning
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectHemisorubim platyrhynchos
dc.subjectMicrovilli
dc.subjectMorphometry
dc.subjectSurface analysis
dc.titleUltrastructure of the digestive tract in neotropical carnivorous catfish Hemisorubim platyrhynchos (Valenciennes, 1840) (Siluriformes, Pimelodidae)
dc.typeOtro


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