Abstract
The aim of this study is to examine the dorsal lingual epithelium of the peregrine falcon (Falco peregrinus) of the family Falconidae. The tongue in its dorsal, lateral and ventral surfaces is covered with a non-keratinized multilayered stratified squamous epithelium. Lamina propria is present beneath the epithelial layers. Morphometrically, thickness of the apex tongue epithelium is more than that in the tongue body. Thickness of the ventral surface of the tongue is less than that in the dorsal one. Thickness of the lateral surface of the tongue was thicker than that in the ventral one and tongue body. Large and small conical papillae appeared on the posterior dorsal surface of the lingual body. There are lingual glands in certain areas of tongue body with numerous openings through the dorsal surface.
Highlights
There is a correlation between bird’s diets and the lingual epithelium morphology
The results of this study described the microscopic structure of the lingual epithelium and correlation between the structure of the tongue and the feeding habits
Thickness of lingual epithelium of birds are differ between different regions of the tongue according to the level of contact of this region with food consumed
Summary
There is a correlation between bird’s diets and the lingual epithelium morphology. Several studies showed that the structure of the bird’s tongue depend on the feeding habit and consumed food (Jackowiak and Godynicki 2005; Jackowiak and Ludwig 2008; Tivane 2008; Taki-El-Deen, 2017). Many authors revealed that there is a close correlation of the structure of the surface epithelium with the style of food swallowing and the kind of food (Mclelland, 1975; Iwasaki et al, 1997; Homberger and Brush, 1986; Shawki and Abdel-Rahman, 1998). Birds tongue in their dorsal and a layer of stratified squamous epithelium covers ventral surfaces. Salivary glands are well developed in granivorous and insectivorous and in birds that consumed soft diet such as piscevorous, they are less developed
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Schedule a callMore From: Brazilian journal of biology = Revista brasleira de biologia
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