Startseite Lebenswissenschaften Biological aspect of the surface structure of the tongue in the adult red kangaroo (Macropus rufus) — light and scanning electron microscopy
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Biological aspect of the surface structure of the tongue in the adult red kangaroo (Macropus rufus) — light and scanning electron microscopy

  • Karolina Goździewska-Harłajczuk EMAIL logo , Joanna Klećkowska-Nawrot , Renata Nowaczyk , Karolina Barszcz , Helena Przespolewska und Marta Kupczyńska
Veröffentlicht/Copyright: 14. Juli 2016
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Biologia
Aus der Zeitschrift Biologia Band 71 Heft 6

Abstract

The aim of this study was to identify the lingual surface and posterior lingual glands in the red kangaroo (Macropus rufus) using light and scanning electron microscopy (SEM). Haematoxylin and eosin (H&E), Masson-Goldner trichrome and Azan trichrome stainings were used for the histological examinations of both the papillae and concomitant glands, located beneath the body of the papillae. The samples were stained also with Alcian blue pH 2.5 and periodic acid-Schiff for histochemical observations. A scanning electron microscope (Tesla BS - 300) was used to examine the lingual surface. Small, giant and elongated filiform mechanical papillae and fungiform, vallate and foliate gustatory papillae were recognized. No typical conical or lenticular papillae were found on the lingual surface. The distribution of each group of papillae varied on the whole surface of the tongue. The majority of the fungiform papillae resembled “bud-like” shapes, and rotund taste buds were present within the fungiform papillae epithelium. The SEM study showed that the apical part of the vallate papilla was oval with an irregular surface. Additionally, the internal wall of this papilla had many intraepithelial cylindrical or rod-shaped taste buds. The papillary leaves did not have any typical appearance, however, the histological study showed the presence of intra-epithelial taste buds in the wall of the foliate papillae area. Furthermore, two types of posterior mixed mucoserous and serous lingual glands were observed. In conclusion, the morphology of the lingual surface as well as the structure of the lingual glands facilitates the consumption of particular foods in the red kangaroo. Additionally, there are typical microstructural features of the red kangaroo tongue, which are different than in other marsupials.

Key words: tongue; marsupials; morphology; light microscopy; histochemical analysis; scanning electron microcopy

Acknowledgements

This research was supported by statutory research and development activity funds assigned to the Faculty of Veterinary Medicine, Wroclaw University of Environmental and Life Sciences and to the Faculty of Veterinary Medicine, Warsaw University of Life Sciences. Publication supported by Wroclaw Center of Biotechnology, program Leading National Research Center (KNOW) for the years 2014-2018.

Conflict of interest

The authors declare that they have no conflict of interest.

Authors contributions

KGH, JKN, RN conceived the study, analyzed the results and wrote the manuscript; KB, HP, MK collected the research material and analyzed the results; all authors critically revised the manuscript.

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Received: 2015-9-17
Accepted: 2016-5-6
Published Online: 2016-7-14
Published in Print: 2016-6-1

©2016 Institute of Zoology, Slovak Academy of Sciences

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https://doi.org/10.1515/biolog-2016-0082
Schlagwörter für diesen Artikel
tongue; marsupials; morphology; light microscopy; histochemical analysis; scanning electron microcopy

Artikel in diesem Heft

  1. Cellular and Molecular Biology
  2. Molecular detection of Mycobacterium tuberculosis complex in the 8th century skeletal remains from the territory of Slovakia
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  4. First report of microorganisms of Caucasus glaciers (Georgia)
  5. Cellular and Molecular Biology
  6. Codon optimization of Aspergillus niger feruloyl esterase and its expression in Pichia pastoris
  7. Botany
  8. Response of lichens Cladonia arbuscula subsp. mitis and Cladonia furcata to nitrogen excess
  9. Botany
  10. No confirmation for previously suggested presence of diploid cytotypes of Sesleria (Poaceae) on the Balkan Peninsula
  11. Botany
  12. RCD1 homologues and their constituent WWE domain in plants: analysis of conservation through phylogeny methods
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  16. Evaluation of appropriate reference gene for normalization of microRNA expression by real-time PCR in Lablab purpureus under abiotic stress conditions
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