Morphological characteristics of the Pterodoras granulosus digestive tube (Valenciennes, 1821) (Osteichthyes, Doradidae)
Little is known about the digestive tube (DT) morphology of the fish Pterodoras granulosus. Therefore, macro‐, meso‐ and microscopic aspects of 15 P. granulosus DTs were analysed. The muscular layer was composed of striated skeletal muscle in the oesophagus and smooth muscle in the other segments. T...
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Veröffentlicht in: | Acta zoologica (Stockholm) 2014-04, Vol.95 (2), p.166-175 |
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description | Little is known about the digestive tube (DT) morphology of the fish Pterodoras granulosus. Therefore, macro‐, meso‐ and microscopic aspects of 15 P. granulosus DTs were analysed. The muscular layer was composed of striated skeletal muscle in the oesophagus and smooth muscle in the other segments. The epithelium progressed from a stratified pavement in the oesophagus to a simple column in the other segments, with a flat striated border in the intestine. A large number of mucus‐secreting periodic acid‐Schiff (PAS)‐positive cells were observed in the oesophagus. In the stomach, the number of glands in the region decreased towards the cardiac–fundic region, and none were found in the pylorus. The intestine showed an epithelium with absorption cells and an increasing number of PAS‐positive caliciform cells towards the distal region. Tests showed that the oesophagus is adapted for passing and preparing food for the chemical digestion that occurs in the stomach, which also has storage functions without grinding action. The proximal intestinal region was consistent with fat absorption, and the medium region, with the absorption of other nutrients. The distal region was short and consistent with a role in absorption for osmoregulation as well as in the formation, storage and disposal of faeces. |
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Therefore, macro‐, meso‐ and microscopic aspects of 15 P. granulosus DTs were analysed. The muscular layer was composed of striated skeletal muscle in the oesophagus and smooth muscle in the other segments. The epithelium progressed from a stratified pavement in the oesophagus to a simple column in the other segments, with a flat striated border in the intestine. A large number of mucus‐secreting periodic acid‐Schiff (PAS)‐positive cells were observed in the oesophagus. In the stomach, the number of glands in the region decreased towards the cardiac–fundic region, and none were found in the pylorus. The intestine showed an epithelium with absorption cells and an increasing number of PAS‐positive caliciform cells towards the distal region. Tests showed that the oesophagus is adapted for passing and preparing food for the chemical digestion that occurs in the stomach, which also has storage functions without grinding action. The proximal intestinal region was consistent with fat absorption, and the medium region, with the absorption of other nutrients. The distal region was short and consistent with a role in absorption for osmoregulation as well as in the formation, storage and disposal of faeces.</description><identifier>ISSN: 0001-7272</identifier><identifier>EISSN: 1463-6395</identifier><identifier>DOI: 10.1111/azo.12016</identifier><language>eng</language><publisher>Oxford: Blackwell Publishing Ltd</publisher><subject>Absorption ; bone fish ; Digestive system ; Fish ; Morphogenesis ; morphology ; Osmoregulation ; Siluriformes ; teleost ; Zoology</subject><ispartof>Acta zoologica (Stockholm), 2014-04, Vol.95 (2), p.166-175</ispartof><rights>2013 The Authors Acta Zoologica © 2013 The Royal Swedish Academy of Sciences</rights><rights>Copyright © 2014 The Royal Swedish Academy of Sciences</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fazo.12016$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fazo.12016$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>315,781,785,1418,27926,27927,45576,45577</link.rule.ids></links><search><creatorcontrib>de Melo Germano, Ricardo</creatorcontrib><creatorcontrib>Stabille, Sandra Regina</creatorcontrib><creatorcontrib>de Britto Mari, Renata</creatorcontrib><creatorcontrib>Pereira, Joice Naiara Bertaglia</creatorcontrib><creatorcontrib>Faglioni, Juliana Raquel Scoz</creatorcontrib><creatorcontrib>de Miranda Neto, Marcílio Hubner</creatorcontrib><title>Morphological characteristics of the Pterodoras granulosus digestive tube (Valenciennes, 1821) (Osteichthyes, Doradidae)</title><title>Acta zoologica (Stockholm)</title><addtitle>Acta Zool</addtitle><description>Little is known about the digestive tube (DT) morphology of the fish Pterodoras granulosus. Therefore, macro‐, meso‐ and microscopic aspects of 15 P. granulosus DTs were analysed. The muscular layer was composed of striated skeletal muscle in the oesophagus and smooth muscle in the other segments. The epithelium progressed from a stratified pavement in the oesophagus to a simple column in the other segments, with a flat striated border in the intestine. A large number of mucus‐secreting periodic acid‐Schiff (PAS)‐positive cells were observed in the oesophagus. In the stomach, the number of glands in the region decreased towards the cardiac–fundic region, and none were found in the pylorus. The intestine showed an epithelium with absorption cells and an increasing number of PAS‐positive caliciform cells towards the distal region. Tests showed that the oesophagus is adapted for passing and preparing food for the chemical digestion that occurs in the stomach, which also has storage functions without grinding action. The proximal intestinal region was consistent with fat absorption, and the medium region, with the absorption of other nutrients. The distal region was short and consistent with a role in absorption for osmoregulation as well as in the formation, storage and disposal of faeces.</description><subject>Absorption</subject><subject>bone fish</subject><subject>Digestive system</subject><subject>Fish</subject><subject>Morphogenesis</subject><subject>morphology</subject><subject>Osmoregulation</subject><subject>Siluriformes</subject><subject>teleost</subject><subject>Zoology</subject><issn>0001-7272</issn><issn>1463-6395</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNo9UMtOwzAQtBBIlMKBP7DEpUgE_Ejs5FgVKCCgHHhIXCzjbBpDiIudAOXrMRSxl90dzcyuBqFdSg5prCP95Q4pI1SsoQFNBU8EL7J1NCCE0EQyyTbRVgjPcc0JZwP0eeX8onaNm1ujG2xq7bXpwNvQWROwq3BXA76JiCud1wHPvW77xoU-4NLOIdLeAXf9E-DRvW6gNRbaFsIBpjmj-3g0Cx1YU3f18gc8jh6lLTXsb6ONSjcBdv76EN2dntxOzpLL2fR8Mr5MLBNUJIbI3GhaSUpSU-VFVghueFFJoKnMdFkyk0NOgRRQCGKkNITzKuNpmhUp4U98iPZWvgvv3vr4r3p2vW_jSUUzIguZCiIi62jF-rANLNXC21ftl4oS9ZOqiqmq31TV-HH2O0RFslLEpODzX6H9ixKSy0w9XE_VPRUiu7pgasK_AX2ZewM</recordid><startdate>201404</startdate><enddate>201404</enddate><creator>de Melo Germano, Ricardo</creator><creator>Stabille, Sandra Regina</creator><creator>de Britto Mari, Renata</creator><creator>Pereira, Joice Naiara Bertaglia</creator><creator>Faglioni, Juliana Raquel Scoz</creator><creator>de Miranda Neto, Marcílio Hubner</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>7QG</scope><scope>7SN</scope><scope>7SS</scope><scope>7TK</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>201404</creationdate><title>Morphological characteristics of the Pterodoras granulosus digestive tube (Valenciennes, 1821) (Osteichthyes, Doradidae)</title><author>de Melo Germano, Ricardo ; Stabille, Sandra Regina ; de Britto Mari, Renata ; Pereira, Joice Naiara Bertaglia ; Faglioni, Juliana Raquel Scoz ; de Miranda Neto, Marcílio Hubner</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i2616-c078ca1f7104cf895963c39f7e1475add2c8e81e09e960c77c033f534459403b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Absorption</topic><topic>bone fish</topic><topic>Digestive system</topic><topic>Fish</topic><topic>Morphogenesis</topic><topic>morphology</topic><topic>Osmoregulation</topic><topic>Siluriformes</topic><topic>teleost</topic><topic>Zoology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>de Melo Germano, Ricardo</creatorcontrib><creatorcontrib>Stabille, Sandra Regina</creatorcontrib><creatorcontrib>de Britto Mari, Renata</creatorcontrib><creatorcontrib>Pereira, Joice Naiara Bertaglia</creatorcontrib><creatorcontrib>Faglioni, Juliana Raquel Scoz</creatorcontrib><creatorcontrib>de Miranda Neto, Marcílio Hubner</creatorcontrib><collection>Istex</collection><collection>Animal Behavior Abstracts</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Neurosciences Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Acta zoologica (Stockholm)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>de Melo Germano, Ricardo</au><au>Stabille, Sandra Regina</au><au>de Britto Mari, Renata</au><au>Pereira, Joice Naiara Bertaglia</au><au>Faglioni, Juliana Raquel Scoz</au><au>de Miranda Neto, Marcílio Hubner</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Morphological characteristics of the Pterodoras granulosus digestive tube (Valenciennes, 1821) (Osteichthyes, Doradidae)</atitle><jtitle>Acta zoologica (Stockholm)</jtitle><addtitle>Acta Zool</addtitle><date>2014-04</date><risdate>2014</risdate><volume>95</volume><issue>2</issue><spage>166</spage><epage>175</epage><pages>166-175</pages><issn>0001-7272</issn><eissn>1463-6395</eissn><abstract>Little is known about the digestive tube (DT) morphology of the fish Pterodoras granulosus. Therefore, macro‐, meso‐ and microscopic aspects of 15 P. granulosus DTs were analysed. The muscular layer was composed of striated skeletal muscle in the oesophagus and smooth muscle in the other segments. The epithelium progressed from a stratified pavement in the oesophagus to a simple column in the other segments, with a flat striated border in the intestine. A large number of mucus‐secreting periodic acid‐Schiff (PAS)‐positive cells were observed in the oesophagus. In the stomach, the number of glands in the region decreased towards the cardiac–fundic region, and none were found in the pylorus. The intestine showed an epithelium with absorption cells and an increasing number of PAS‐positive caliciform cells towards the distal region. Tests showed that the oesophagus is adapted for passing and preparing food for the chemical digestion that occurs in the stomach, which also has storage functions without grinding action. The proximal intestinal region was consistent with fat absorption, and the medium region, with the absorption of other nutrients. The distal region was short and consistent with a role in absorption for osmoregulation as well as in the formation, storage and disposal of faeces.</abstract><cop>Oxford</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1111/azo.12016</doi><tpages>10</tpages></addata></record> |
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subjects | Absorption bone fish Digestive system Fish Morphogenesis morphology Osmoregulation Siluriformes teleost Zoology |
title | Morphological characteristics of the Pterodoras granulosus digestive tube (Valenciennes, 1821) (Osteichthyes, Doradidae) |
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