Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2016-04-26T22:18:34Z No. of bitstreams: 1 GlauciaMoisesMarquesESilva_DISSERT.pdf: 4491334 bytes, checksum: ab12f2e9fbbbbe51fff172ebec8580f4 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2016-04-29T23:53:54Z (GMT) No. of bitstreams: 1 GlauciaMoisesMarquesESilva_DISSERT.pdf: 4491334 bytes, checksum: ab12f2e9fbbbbe51fff172ebec8580f4 (MD5) / Made available in DSpace on 2016-04-29T23:53:54Z (GMT). No. of bitstreams: 1 GlauciaMoisesMarquesESilva_DISSERT.pdf: 4491334 bytes, checksum: ab12f2e9fbbbbe51fff172ebec8580f4 (MD5) Previous issue date: 2015-06-30 / Neste estudo foram utilizados 07 exemplares de Cichlasoma orientale, com objetivo de caracterizar morfohistologicamente o trato digest?rio dessa esp?cie. A cavidade bucofaringeana deste peixe foi investigada por meio de lupa e microsc?pio eletr?nica de varredura e exibiu caracter?sticas como boca terminal com protractibilidade, l?bios liso sendo o superior de menor espessura que o l?bio inferior, a l?ngua triangular e pigmentada, maxila arredondada com pregas palatinas, valva respirat?ria e placas dent?geras com dente c?nico. Na faringe evidencia-se a presen?a de duas placas dent?geras com dent?culos c?nicos, os rastros se apresentam curtos, apenas no primeiro arco braquial e exclusivamente presentes em esp?cimes jovens. As t?cnicas de colora??o HE-Hematoxilina de Harris, Eosina e Peri?dico Schiff foram utilizadas para caracterizar morfologicamente as camadas do tubo digest?rio com auxilio do microsc?pio optico. O es?fago ? curto com pregas na mucosa revestidas por epit?lio pseudoestratificado com c?lulas mucosecretora que se intercalam com c?lulas n?o secret?rias. A camada muscular esof?gica ? espessa com predom?nio de fibras de m?sculo esquel?tico estriado que pode ser evidenciado inclusive pr?ximo ao est?mago. Estas caracter?sticas, provavelmente est?o envolvidas ao h?bito de deglutir presas maiores e prote??o. O est?mago tem formato em Y possuindo tr?s regi?es, todas revestidas por epit?lio simples e provavelmente absortivo. A c?rdica, sem camada muscular da mucosa, com l?mina pr?pria glandular; a f?ndica com muitas pregas mucosas, delgada muscular da mucosa e grande quantidade de gl?ndulas g?stricas; por fim a regi?o pil?rica ? tamb?m glandular e a camada muscular mais espessa quando comparadas as outras regi?es. As caracter?sticas morfol?gicas estomacais indicam um est?mago especializado na digest?o qu?mica, ?cida e proteica. O intestino apresenta-se, anatomicamente, curto com duas al?as intestinais e com tr?s regi?es anterior, m?dia e posterior bem distintas. Quanto ? camada da mucosa, o epit?lio por todo o intestino, tem revestimento do tipo cil?ndrico simples observando-se c?lulas caliciformes e enter?citos, vilosidades tamb?m est?o presentes. O ?rg?o ? totalmente aglandular e provavelmente respons?vel, mais intensamente com a absor??o sendo a digest?o intestinal possivelmente dependente de secre??es hepatopancre?ticas. A morfologia identificada em Cichlasoma orientale apresenta ?rg?os adaptados ao habito alimentar on?voro com tend?ncia alimentar ? carnivoria. / This study used 07 specimens of Cichlasoma orientale, in order to characterize morfohistologicamente the digestive tract of this species. The bucofaringeana cavity of this fish was investigated by means of magnifying glass and scanning electron microscope and exhibited characteristics as terminal mouth with protractibilidade, smooth lips and the upper thinner than the lower lip, triangular and pigmented tongue, rounded jaw with palatine folds, breathing valve and dentigerous plates with conical teeth. In the pharynx highlights the presence of two plates with tapered indentations dentigerous, the tracks are shown shorter, only the first brachial arch and exclusively present in young animals. Technical HEHarris hematoxylin staining, eosin and Periodic Schiff were used to characterize morphologically the layers of the digestive tract with the aid of optical microscope. The esophagus is short with folds mucosa lined by pseudostratified epithelium with mucosecretora cells that are interspersed with nonsecretory cells. The esophageal muscle layer is thick with predominance of striated skeletal muscle fibers which can be evidenced even close to the stomach. These features are probably involved the swallowing habit largest and protection prey. The stomach has format in Y having three regions, all overlaid by a simple epithelium and probably absorptive. The cardial without muscular layer of mucosa with glandular lamina propria; the fundus with many folds mucosa, muscular thin mucous and lot of gastric glands; Finally the pyloric gland and is also thicker muscle layer when compared to other regions. The stomach morphological characteristics indicate a specialized stomach chemistry, acid and protein digestion. The intestine presents itself, anatomically, with two short bowel loops with three anterior, middle and posterior distinct. The layer of the mucosa, the intestinal epithelium throughout, it has a single cylindrical type coating observing goblet cells and enterocytes, villi are also present. The Board is fully responsible aglandular and probably more intensely with the absorption and intestinal digestion possibly dependent hepatopancre?ticas secretions. The morphology identified in Cichlasoma orientale presents organs adapted to the omnivorous eating habits to feed the carnivorous trend.