{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,17]],"date-time":"2026-07-17T00:10:20Z","timestamp":1784247020998,"version":"3.55.0"},"reference-count":62,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2014,9,26]],"date-time":"2014-09-26T00:00:00Z","timestamp":1411689600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Fish Biology"],"published-print":{"date-parts":[[2014,11]]},"abstract":"<jats:p>The primary objectives of this study were to document the macroscopic and histological structure of the alimentary tract (<jats:styled-content style=\"fixed-case\">AT<\/jats:styled-content>) of the convict cichlid <jats:italic>Amatitlania nigrofasciata<\/jats:italic>, because there are no data available for this omnivorous freshwater fish of the family Cichlidae. The morphology of the <jats:styled-content style=\"fixed-case\">AT<\/jats:styled-content> of <jats:italic>A. nigrofasciata<\/jats:italic> resembles that of related species. While having morphological criteria of the <jats:styled-content style=\"fixed-case\">AT<\/jats:styled-content> typical of most omnivorous fishes, such as a blind sac stomach and medium length intestine, <jats:italic>A. nigrofasciata<\/jats:italic> also has some structural peculiarities: the oesophagus is lined by a uniform stratified squamous epithelial layer with interspersed goblet cells along its entire length. Additionally, it has well\u2010developed layers of the tunica muscularis including muscle fibre bundles that ascend into its mucosal folds. Occasionally, taste buds are present. In the transitional area between oesophagus and stomach, a prominent torus\u2010like closure device is present. The mucosa of the stomach cannot be divided into different regions according to mucosal and morphological properties. The simple pattern of intestinal loops of <jats:italic>A. nigrofasciata<\/jats:italic> has few variations, irrespective of sex, mass and length of the individual fish. The first segment of the intestine is characterized by the largest mucososerosal ratio and the most complex mucosal surface architecture. A distinction of midgut and hindgut was not possible in <jats:italic>A. nigrofasciata<\/jats:italic> due to lack of defining structural components as described for other fish species.<\/jats:p>","DOI":"10.1111\/jfb.12530","type":"journal-article","created":{"date-parts":[[2014,9,26]],"date-time":"2014-09-26T14:56:03Z","timestamp":1411743363000},"page":"1707-1725","source":"Crossref","is-referenced-by-count":16,"title":["Gross morphology and histology of the alimentary tract of the convict cichlid <i>Amatitlania nigrofasciata<\/i>"],"prefix":"10.1111","volume":"85","author":[{"given":"C.","family":"Hopperdietzel","sequence":"first","affiliation":[{"name":"Institute of Veterinary Anatomy, Department of Veterinary Medicine Freie Universit\u00e4t Berlin, Koserstrasse 20  D\u201014195 Berlin Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. 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