Background. The aim of the study was to investigate the tongue of the raccoon dog (Nyctereutes procyonoides), which is a popular farm animal. The article describes the structure of its taste papillae.
Material and methods. The tongues of 11 raccoon dogs were fixed in 10% formalin. Then the length and width of the apex, body and root of the organs were measured. Samples of the taste papillae were dehydrated in ethanol, embedded in Paraplast® and cut into 5-µm-thick sections. Masson-Goldner staining was applied in the study. The taste papillae of the tongue were examined with a light microscope.
Results. The study showed three types of taste papillae on the raccoon dog’s tongue, i.e. fungiform, foliate and vallate papillae. The most numerous, fungiform papillae were distributed on the dorsum of the apex and body of the tongue and on the margins of the tongue. Two foliate papillae were located dorso-laterally in the posterior part of the lingual body. The vallate papillae were arranged in a V-like manner, 3–4 papillae on each side of the tongue. Numerous fungiform papillae were distributed irregularly on the tongue. The foliate papillae were composed of 3–7 folia of papillae, arranged parallel to one another. Individual folia of the foliate papillae were separated with deep furrows. Each vallate papilla was surrounded by a deep furrow, around which a marked circular outer wall of the papilla was found. Occasionally two vallate papillae were surrounded by a common furrow and an outer wall.
Conclusions. The study presents the structure and the distribution pattern of taste papillae on the raccoon dog’s tongue.
|MLA||Kulawik, Mirosława. "The tongue of the raccoon dog (Nyctereutes procyonoides) and its taste structures." Nauka Przyr. Technol. 11.1 (2017): 77-86. http://dx.doi.org/10.17306/J.NPT.00157|
|APA||Mirosława Kulawik (2017). The tongue of the raccoon dog (Nyctereutes procyonoides) and its taste structures. Nauka Przyr. Technol. 11 (1), 77-86 http://dx.doi.org/10.17306/J.NPT.00157|
|ISO 690||KULAWIK, Mirosława. The tongue of the raccoon dog (Nyctereutes procyonoides) and its taste structures. Nauka Przyr. Technol., 2017, 11.1: 77-86. http://dx.doi.org/10.17306/J.NPT.00157|
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