EFFECT OF DIFFERENT FEEDING BEHAVIORS ON THE LINING EPITHELIUM OF THE ROOF OF BUCCAL CAVITY OF TWO BIRD SPECIES

Document Type : Original Research Papers

Authors

1 Department of Zoology, Faculty of Science, Assiut University, Assiut, Egypt

2 Department of Zoology, Faculty of Science, AL-Azhar University, Assiut Branch, Assiut, Egypt

Abstract

The present study represents a comparison between the morphology of the roof of the buccal cavity in two bird species; the common moorhen, Gallinula chloropus and the hoopoe, Upupa  epops. The palate region of the common moorhen has a well-developed medial and two lateral ridges and carrying backwardly directed papillae. The palate region of the common moorhen is lined by keratinized stratified epithelium. While, the palate region of the hoopoe, has shallow medial and two lateral ridges which lack the palatine papillae on their surface. The lining epithelium of the palate region of the hoopoe is covered by a thin keratin layer that disappears posteriorly to become non-keratinized epithelium which carried tiny scattered papillae on its surface. Posteriorly, the pharyngeal region in both bird species is lined by non-keratinized epithelium.

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