{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,7]],"date-time":"2026-02-07T22:17:21Z","timestamp":1770502641030,"version":"3.49.0"},"reference-count":17,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2005,2,6]],"date-time":"2005-02-06T00:00:00Z","timestamp":1107648000000},"content-version":"vor","delay-in-days":7372,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Morphology"],"published-print":{"date-parts":[[1984,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The gross morphology and histology of the alimentary tracts of three species of glassy perchlet; <jats:italic>Ambassis productus, A. natalensis<\/jats:italic>, and <jats:italic>A. gymnocephalus<\/jats:italic> from estuaries on the southeast coast of Africa were investigated. The anatomy of the digestive tracts in all three species was found to be similar. Well\u2010developed dentition and pharyngeal teeth together with a distensible stomach and a low relative gut length (RGL) suggest a predatory and carnivorous habit for all three species.<\/jats:p><jats:p>The relative gut lengths of <jats:italic>Ambassis<\/jats:italic> species from different estuarine systems are compared\u2025 Differences in RGL for <jats:italic>A. productus<\/jats:italic> and <jats:italic>A. natalensis<\/jats:italic> from the Kosi and St Lucia systems with fish from Mdloti estuary are discussed. It is suggested that decreased RGL for fish at Mdloti is attributable to decreased food availability and not to a lack in the calorific content of their diet.<\/jats:p><jats:p>Histological investigation revealed the presence of the following regions: a pharynx; an oesophagus; a stomach differentiated into cardiac and pyloric regions; a duodenum or upper intestine; an ileum or lower intestine; and a rectum. Pyloric and rectal sphincters are present. The tunics of the above regions are described. The epithelium of the oesophagus contains taste buds and numerous mucus cells, and varies from stratified anteriorly to simple columnar posteriorly. The muscularis comprises dorsally and ventrally located inner muscle bundles and an outer circular layer. Both layers consist of striated fibres.<\/jats:p><jats:p>Gastric glands are present in the mucosa of the cardiac stomach but are absent in the pylorus. Columnar absorbing cells and goblet cells are present in the epithelium of the upper and lower intestine. The rectum is distinguished from the intestine by the proliferation of mucous\u2010secreting cells which are thought to aid defecation.<\/jats:p>","DOI":"10.1002\/jmor.1051820305","type":"journal-article","created":{"date-parts":[[2005,2,24]],"date-time":"2005-02-24T17:23:01Z","timestamp":1109265781000},"page":"295-305","source":"Crossref","is-referenced-by-count":35,"title":["Morphology and histology of the alimentary tracts of ambassidae (Cuvier) (Teleostei) in relation to feeding"],"prefix":"10.1002","volume":"182","author":[{"given":"T. J.","family":"Martin","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"S. J. M.","family":"Blaber","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2005,2,6]]},"reference":[{"key":"e_1_2_1_2_1","first-page":"8","article-title":"Odnos du\u017eine crevnog trakta i du\u017eine tijela kod tri lokalne populacije ostrulja (Aulopige h\u00fcgelii Heck)","volume":"21","author":"Agonovi\u010d M.","year":"1966","journal-title":"Ribarstvo Jugeslavije"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.1050780108"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1002\/jmor.1050800205"},{"key":"e_1_2_1_5_1","first-page":"109","article-title":"On the functional morphology of the alimentary tract of some fishes in relation to differences in their feeding habits: Anatomy and histology","volume":"90","author":"Al\u2010Hussaini A. H.","year":"1949","journal-title":"J. Microsc. Sci."},{"key":"e_1_2_1_6_1","first-page":"17","article-title":"On the functional morphology of the alimentary tract of some omnivorous teleost fish","volume":"9","author":"Al\u2010Hussaini A. H.","year":"1953","journal-title":"Proc. Egypt. Acad. Sci."},{"key":"e_1_2_1_7_1","first-page":"161","article-title":"Adaptaciones del aparto digestivo al r\u00e9gimen altimenticio en algunos pesces del Rio Uruguay y del Rio de la Plata","volume":"1","author":"Angelescu V.","year":"1949","journal-title":"Rev. Inst. Nac. Invest. Cienc. Natl."},{"key":"e_1_2_1_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/B978-1-4832-2817-4.50009-3"},{"key":"e_1_2_1_9_1","first-page":"156","article-title":"The ecology of two degraded estuaries on the north coast of Natal","volume":"79","author":"Blaber S. J. M.","year":"1983","journal-title":"S. Afr. J. Sci."},{"key":"e_1_2_1_10_1","first-page":"109","volume-title":"Advances in Marine Biology","author":"Kapoor B. G.","year":"1975"},{"key":"e_1_2_1_11_1","series-title":"Acta Fac. Rer. Nat. Univ. Comeniane 12 Zool. Publ. 13","first-page":"259","volume-title":"Beitrag zur vergleichenden mikroskopischen Anatomie der Verdauunsr\u00f6hre der Fische","author":"Konfal E.","year":"1966"},{"key":"e_1_2_1_12_1","unstructured":"Martin T. J.(1983)The Biology of Ambassidae (Cuvier) (Teleostei) in Natal Estuaries. Ph.D. Thesis University of Natal Pietermaritzburg South Africa."},{"issue":"4","key":"e_1_2_1_13_1","first-page":"353","article-title":"The feeding ecology of Ambassidae (Osteichthyes: Perciformes) in Natal estuaries","volume":"18","author":"Martin T. J.","year":"1983","journal-title":"S. Afr. J. Zool."},{"issue":"2","key":"e_1_2_1_14_1","first-page":"142","article-title":"The comparative morpho\u2010histology and anatomy of the digestive system of two Indian freshwater perches, Ambassis nama (Ham.) and Ambassis ranga (Ham.) in relation to their food and feeding habits","volume":"102","author":"Moitra S. K.","year":"1979","journal-title":"Zool. Jahrb. Anat."},{"key":"e_1_2_1_15_1","first-page":"41","article-title":"Comparative morphology and histology of the alimentary canals in cartain groups of Indian teleosts","volume":"43","author":"Moshin S. M.","year":"1962","journal-title":"Acta Zool. (Stockh.)"},{"issue":"2","key":"e_1_2_1_16_1","first-page":"142","article-title":"Prey\u2010predator relationships and feeding ethology in the glassy perchlet Chanda (= Ambassis) commersoni (Cuv. & Val.) (Pisces, Centropomidae)","volume":"10","author":"Nair J. R.","year":"1981","journal-title":"Ind. J. Mar. Sci."},{"issue":"9","key":"e_1_2_1_17_1","first-page":"5126B","article-title":"A light and electron microscope study of the postpharyngeal alimentary tract of the glassfish Chanda ranga","volume":"31","author":"Pearson E. S.","year":"1971","journal-title":"Diss. Abstr. Int."},{"key":"e_1_2_1_18_1","first-page":"19","volume-title":"The Alimentary and Respiratory Systems, Part II","author":"Purser G. L.","year":"1928"}],"container-title":["Journal of Morphology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fjmor.1051820305","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jmor.1051820305","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,20]],"date-time":"2023-10-20T00:33:18Z","timestamp":1697761998000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jmor.1051820305"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1984,12]]},"references-count":17,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1984,12]]}},"alternative-id":["10.1002\/jmor.1051820305"],"URL":"https:\/\/doi.org\/10.1002\/jmor.1051820305","archive":["Portico"],"relation":{},"ISSN":["0362-2525","1097-4687"],"issn-type":[{"value":"0362-2525","type":"print"},{"value":"1097-4687","type":"electronic"}],"subject":[],"published":{"date-parts":[[1984,12]]}}}