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Journal Info

Title: Studia Universitatis Vasile Goldis, Seria Stiintele Vietii (Life Sciences Series)
Abbreviated title: Studia Univ. VG, SSV
Publisher: "Vasile Goldis" University Press
Owner: Western University "Vasile Goldis" Arad, Romania
ISSN: 1584-2363
e-ISSN: 1842-7863
ISSN-L: 1584-2363

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Micromorphology of the oro-pharyngeal cavity of the Tilapia fish (Oreochromis niloticus) from Afikpo River in Eastern Nigeria Print E-mail
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Article Title: Micromorphology of the oro-pharyngeal cavity of the Tilapia fish (Oreochromis niloticus) from Afikpo River in Eastern Nigeria
Authors: Ikpegbu E., Nlebedum U., Ibe C., Nnadozie O.
Affiliation: Department of Veterinary Anatomy, Michael Okpara University of Agriculture Umudike, Abia State, Nigeria.
Abstract: The micromorphology of the oropharyngeal cavity of the tilapia fish Orechromis niloticus, from Nigerian waters were investigated to fill the dearth of information from available literature and help understand its food prehension and pregastric apparatus biology. The lips epidermis was lined stratified squamous epithelium containing mucous cells. The lip dermal region contained dense regular collagen, melanophores and few melanocytes. Pectinate ligament were also seen in the lips. The wall of the cavity was modified into longitudinal folds lined by stratified squamous epithelium containing mucous cells. The submucosal region of the cavity wall contained loose irregular fibres, adipose tissue, blood vessels and nerve fibres. The lingual epithelium of stratified squamous cells with no taste buds makes the organ a mechanical structure involved in rolling the food back. The Pharyngeal pad was lined by stratified squamous epithelium containing mucous cells and taste buds. Pharyngeal pad teeth erupted above the epithelium. This co-localization of taste bud and teeth makes the pad the primary organ for food selection or rejection through gustation.
Keywords: taste buds, mucous cells, histology, food selection, melanophores.
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