Nauka Przyroda Technologie

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2017 volume 11 issue 1, 77-86 http://dx.doi.org/10.17306/J.NPT.00157
Mirosława Kulawik
The tongue of the raccoon dog (Nyctereutes procyonoides) and its taste structures
Summary.

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.

Key words: Nyctereutes procyonoides, tongue, taste papillae
PDFFull text available in English in Adobe Acrobat format:
http://www.npt.up-poznan.net/tom11/zeszyt1/art_7.pdf

http://dx.doi.org/10.17306/J.NPT.00157

For citation:

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
Corresponding address:
Mirosława Kulawik
Instytut Zoologii
Uniwersytet Przyrodniczy w Poznaniu
ul. Wojska Polskiego 71 C
60-625 Poznań
Poland
e-mail: kulawik@up.poznan.pl
Accepted for print: 31.03.2017