{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,14]],"date-time":"2026-07-14T19:47:46Z","timestamp":1784058466598,"version":"3.55.0"},"reference-count":46,"publisher":"FapUNIFESP (SciELO)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["An. Acad. Bras. Ci\u00eanc."],"published-print":{"date-parts":[[2015,6]]},"abstract":"<jats:p>The digestive tracts of 44 specimens of Schizodon knerii were studied using anatomical, histological and histochemical techniques. The mouth has terminal position, the lip epithelium is squamous stratified with mucous, claviform cells and taste buds, teeth have an incisive form and the tongue has a stratified squamous epithelium with mucous cells and taste buds. The oropharynx cavity is formed by gill apparatus and pharyngeal teeth. The oesophagus presented pleated mucosa, a stratified squamous epithelium with mucous cells, oesophageal glands and taste buds. The stomach presented cardiac, fundic and pyloric regions, simple prismatic epithelium with tubular glands, with none in the pyloric region. The intestine contains 11-15 pyloric caeca, a simple prismatic epithelium with brush border, goblet cells and lymphocytes. Mucosal cells, oesophageal glands and goblet cells reacted positively to PAS, amylase + PAS, Ab pH 2.5 and Ab pH 0.5. Gastric prismatic cells reacted positively to PAS, amylase + PAS, but only those in the pyloric region reacted positively to Ab pH 2.5 and Ab pH 0.5. The results improve the understanding of the anatomy of S. knerii feeding habits and the presence of mucosubstances in the epithelium, highlights the importance of glycoproteins for passing food through the digestive tract.<\/jats:p>","DOI":"10.1590\/0001-3765201520140230","type":"journal-article","created":{"date-parts":[[2015,6,27]],"date-time":"2015-06-27T21:24:13Z","timestamp":1435440253000},"page":"867-878","source":"Crossref","is-referenced-by-count":28,"title":["Morphological characteristics of the digestive tract of Schizodon knerii (Steindachner, 1875), (Characiformes: Anostomidae): An anatomical, histological and histochemical study"],"prefix":"10.1590","volume":"87","author":[{"given":"Marcella L. Dos","family":"Santos","sequence":"first","affiliation":[{"name":"PUC Minas, Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"F\u00e1bio P.","family":"Arantes","sequence":"additional","affiliation":[{"name":"PUC Minas, Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kleber B.","family":"Santiago","sequence":"additional","affiliation":[{"name":"Companhia de Desenvolvimento dos Vales do S\u00e3o Francisco e do Parna\u00edba, Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jos\u00e9 E. 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J Biol"},{"key":"ref6","first-page":"161","article-title":"Adaptaciones del aparato digestivo al regime aliment\u00edcio en algunos peces del rio Uruguay y del rio de La Plata","volume":"1","author":"ANGELESCU V","year":"1949","journal-title":"Rvta Inst Nac Invest Ci\u00eanc Nat"},{"key":"ref7","doi-asserted-by":"crossref","first-page":"155","DOI":"10.18817\/repesca.v4i1.140","article-title":"Perfil da ictiofauna da Bacia do S\u00e3o Francisco: Estudo preliminar","volume":"4","author":"BARBOSA JM","year":"2009","journal-title":"Rev Bras Enga Pesca"},{"key":"ref8","first-page":"1248","article-title":"Appareil digestif In: Grass\u00e9 PP. Paris Masson","volume":"13","author":"B\u00c9RTIN L","year":"1958","journal-title":"Trait\u00e9 de zoologie"},{"key":"ref9","series-title":"Manual de identifica\u00e7\u00e3o de peixes da regi\u00e3o de Tr\u00eas Marias: com chaves de identifica\u00e7\u00e3o para os peixes do S\u00e3o Francisco","volume-title":"Fam\u00edlia Anostomidae","author":"BRITSKI HA","year":"1986"},{"key":"ref10","series-title":"Minist\u00e9rio da Ci\u00eancia, Tecnologia e Inova\u00e7\u00e3o. Diretrizes da pr\u00e1tica de eutan\u00e1sia do CONCEA","year":"2013"},{"key":"ref11","first-page":"193","article-title":"Histological characteristics of the esophagus of Phractolaemus ansorgei (Pisces, Gonorhynchiformes)","volume":"9","author":"DANGUY A","year":"1985","journal-title":"Cybium"},{"key":"ref12","doi-asserted-by":"crossref","first-page":"341","DOI":"10.1111\/j.1439-0264.2003.00490.x","article-title":"Morphological and histochemical characterization of the mucosa of the digestive tract in Engraulis anchoita","volume":"32","author":"DIAZ AO","year":"2003","journal-title":"Anat Histol Embryol"},{"key":"ref13","first-page":"359","article-title":"Gut glycoconjugates in Sparus aurata L (Pisces, Teleostei) A comparative histochemical study in larval and adult ages","volume":"13","author":"DOMENEGHINI C","year":"1998","journal-title":"Histol Histopathol"},{"key":"ref14","first-page":"171","article-title":"Dieta de duas esp\u00e9cies de Schizodon (Characiformes, Anostomidae), na plan\u00edcie de inunda\u00e7\u00e3o do Alto Paran\u00e1 e sua rela\u00e7\u00e3o com aspectos morfol\u00f3gicos","volume":"23","author":"FERRETTI CML","year":"1996","journal-title":"Bol Inst Pesca"},{"key":"ref15","series-title":"Cheklist of the freshwater fishes of South and Central America","first-page":"71","volume-title":"Family Anostomidae (Headstanders)","author":"GARAVELLO JC","year":"2003"},{"key":"ref16","article-title":"Morphological characteristics of the Pterodoras granulosus digestive tube (Valenciennes, 1821) (Osteichthyes, Doradidae)","author":"GERMANO RM","year":"2013","journal-title":"Acta Zool"},{"key":"ref17","doi-asserted-by":"crossref","first-page":"709","DOI":"10.1007\/BF01004734","article-title":"Mucous glycoproteins of teleostean fish: a comparative histochemical study","volume":"11","author":"GONA O","year":"1979","journal-title":"Histochem J"},{"key":"ref18","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1155\/2012\/610419","article-title":"Ecological Factors and Diversification among Neotropical Characiforms","volume":"2012","author":"GUISANDE C ET AL","year":"2012","journal-title":"Int J Ecol"},{"key":"ref19","first-page":"16","article-title":"An\u00e1lise histol\u00f3gica de estruturas sensoriais de Centropomus parallelus (Poey, 1896) (Centropomidae) relacionadas ao h\u00e1bito alimentar","volume":"1","author":"HANKE BV","year":"2008","journal-title":"RUBS"},{"key":"ref20","doi-asserted-by":"crossref","first-page":"483","DOI":"10.1002\/dvdy.10074","article-title":"Taste bud development in the Zebrafish, Danio rerio","volume":"223","author":"HANSEN A","year":"2002","journal-title":"Dev Dyn"},{"key":"ref21","first-page":"82","article-title":"A study on the tongue of fishes","volume":"6","author":"KAPOOR BG","year":"1957","journal-title":"Jap J Ichth"},{"key":"ref22","doi-asserted-by":"crossref","first-page":"109","DOI":"10.1016\/S0065-2881(08)60281-3","article-title":"The ali mentary canal and digestion in teleosts","volume":"13","author":"KAPOOR BG","year":"1975","journal-title":"Adv Mar Biol"},{"key":"ref23","article-title":"Goblet Cell Types in Intestine of Tiger Barb and Black Tetra (Cyprinidae, Characidae: Teleostei)","author":"LEKNES IL","year":"2013","journal-title":"Anat Histol Embryol"},{"key":"ref24","doi-asserted-by":"crossref","first-page":"859","DOI":"10.1002\/jmor.20142","article-title":"Intestinal morphology of the wild atlantic salmon ( Salmo salar )","volume":"274","author":"L\u00d8KKA G","year":"2013","journal-title":"J Morphol"},{"key":"ref25","series-title":"An\u00e1tomo-histologia funcional comparativa do aparelho digestivo de seis Teleostei (Pisces) de \u00e1gua doce","author":"MENIN E","year":"1988"},{"key":"ref26","first-page":"345","article-title":"Anatomia funcional da cavidade bucofaringiana de duas esp\u00e9cies de Teleostei de \u00e1gua doce, Leporinus reinhardti L\u00fctken, 1874, e Brycon lundii Reinhardt, 1849, de h\u00e1bito alimentar on\u00edvoro","volume":"38","author":"MENIN E","year":"1991","journal-title":"Ceres"},{"key":"ref27","author":"MENIN E","year":"2006"},{"key":"ref28","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1590\/S0101-81751997000100015","article-title":"Alimenta\u00e7\u00e3o e rela\u00e7\u00f5es morfol\u00f3gicas com o aparelho digestivo do \"curimbat\u00e1\", Prochilodus lineatus (Valenciennes) (Osteichthyes, Prochilodontidae), de uma lagoa do sul do Brasil","volume":"14","author":"MORAES MFPG","year":"1997","journal-title":"R Bras Zootec"},{"key":"ref29","series-title":"Histochemistry - Theoretical and Applied","author":"PEARSE AGE","year":"1985"},{"key":"ref30","first-page":"317","article-title":"Mucosubstances of the digestive tract mucosa in northern pike ( Esox lucius L.) and european catfish ( Silurus glanis L.)","volume":"75","author":"PETRINEC Z","year":"2005","journal-title":"Vet arhiv"},{"key":"ref31","first-page":"255","article-title":"Histological and histochemical study on the alimentary canal in Walking catfish ( Clarias batrachus ) and piranha (Serrasalmus nattereri )","volume":"11","author":"RAJI AR","year":"2010","journal-title":"Iranian J Veterinary Res"},{"key":"ref32","doi-asserted-by":"crossref","first-page":"559","DOI":"10.1111\/j.1365-2095.2008.00622.x","article-title":"Intestinal morphology and histology of the striped catfish Pseudoplatystoma fasciatum (Linnaeus, 1766) fed dry diets","volume":"15","author":"RODRIGUES APO","year":"2009","journal-title":"Aquacult Nutr"},{"key":"ref33","first-page":"843","article-title":"Anatomia da cavidade bucofaringeana de Conorhynchos conirostris (Valenciennes, 1984) (Siluriformes)","volume":"52","author":"RODRIGUES SS","year":"2005","journal-title":"Ceres"},{"key":"ref34","doi-asserted-by":"crossref","first-page":"65","DOI":"10.5007\/2175-7925.2008v21n2p65","article-title":"Anatomia do tubo digestivo de Salminus brasiliensis (Cuvier, 1817) (Pisces, Characidae, Salmininae)","volume":"21","author":"RODRIGUES SS","year":"2008","journal-title":"Biotemas"},{"key":"ref35","first-page":"51","article-title":"Adapta\u00e7\u00f5es anat\u00f4micas da cavidade bucofaringiana de Leporinus macrocephalus Garavello e Britski, 1988 (Characiformes, Anostomidae) em rela\u00e7\u00e3o ao h\u00e1bito alimentar","volume":"19","author":"RODRIGUES SS","year":"2006","journal-title":"Biotemas"},{"key":"ref36","first-page":"86","article-title":"Anatomia do tubo digest\u00f3rio de Leporinus macrocephalus Garavello & Britski, 1988 (Characiformes, Anostomidae) em rela\u00e7\u00e3o ao seu habita alimentar","volume":"24","author":"RODRIGUES SS","year":"2008","journal-title":"Biosci J"},{"key":"ref37","doi-asserted-by":"crossref","first-page":"775","DOI":"10.4257\/oeco.2011.1504.03","article-title":"Cicl\u00eddeos Neotropicais: Ecomorfologia tr\u00f3fica","volume":"15","author":"SAMPAIO ALA","year":"2001","journal-title":"Oecologia Australis"},{"key":"ref38","doi-asserted-by":"crossref","first-page":"411","DOI":"10.1590\/S0073-47212007000400009","article-title":"Histologia e caracteriza\u00e7\u00e3o histoqu\u00edmica do tubo gastrintestinal de Pimelodus maculatus Pimelodidae, Siluriformes) no reservat\u00f3rio de Funil, Rio de Janeiro, Brasil","volume":"97","author":"SANTOS CM","year":"2007","journal-title":"Iheringia S\u00e9r Zool"},{"key":"ref39","first-page":"201","article-title":"Crescimento de Schizodon knerii Steindachner, 1875 (Pisces, Anostomidae) na represa de Tr\u00eas Marias, Minas Gerais","volume":"3","author":"SATO Y","year":"1982","journal-title":"An Sem Reg Ecol"},{"key":"ref40","first-page":"2181","article-title":"Anatomia funcional e morfometria dos intestinos e cecos pil\u00f3ricos do teleostei (Pisces) de \u00c1gua Doce Piau ( Leporinus friderici , Bloch, 1794)","volume":"29","author":"SEIXAS-FILHO JT","year":"2000","journal-title":"Rev Bras Zool"},{"key":"ref41","first-page":"1","article-title":"Histologia do sistema digest\u00f3rio de sag\u00fciru, Steindachnerina notonota (Miranda Ribeiro, 1937) (Pisces, Curimatidae), do rio Cear\u00e1 Mirim, Rio Grande do Norte, Brasil","volume":"31","author":"SILVA NB","year":"2005","journal-title":"Bol Inst Pesca"},{"key":"ref42","first-page":"47","article-title":"Tamanho de primeira matura\u00e7\u00e3o sexual do Schizodon knerii e do Leporinus piau (Teleostei, Anostomidae) na represa de Tr\u00eas Marias, MG","volume":"48","author":"SOARES MG","year":"1996","journal-title":"Arq Bras Med Vet Zootec"},{"key":"ref43","first-page":"163","article-title":"La structure histologique typique du tube digestif des poissons t\u00e9leosteens","volume":"4","author":"VEGAS-VELEZ M","year":"1972","journal-title":"Tethys"},{"key":"ref44","doi-asserted-by":"crossref","first-page":"763","DOI":"10.1590\/S1519-69842011000400023","article-title":"Biological aspects of Schizodon nasutus Kner, 1858 (Characiformes, Anostomidae) in the low Sorocaba river basin, S\u00e3o Paulo state, Brazil Brazil","volume":"71","author":"VILLARES JUNIOR GA","year":"2011","journal-title":"Braz J Biol"},{"key":"ref45","series-title":"The multifunctional gut of fish","first-page":"2","volume-title":"Morphological diversity of the gastrointestinal tract in fishes","author":"WILSON JM","year":"2011"},{"key":"ref46","doi-asserted-by":"crossref","first-page":"161","DOI":"10.1111\/j.1463-6395.2010.00458.x","article-title":"A study of morphology and histology of the alimentary tract of Glyptosternum maculatum (Sisoridae, Siluriformes)","volume":"92","author":"XIONG D","year":"2011","journal-title":"Acta Zool"}],"container-title":["Anais da Academia Brasileira de 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