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Biologia

, Volume 73, Issue 4, pp 379–387 | Cite as

Craniometry of the Slovak northeastern beavers (Castor fiber) in comparison with the Ukrainian and Polish populations and contribution to the knowledge of the enamel thickness of beaver’s incisors

  • Jana Teleky
  • Oleg Melnik
  • Teodor Tóth
  • Dušan Rajský
  • Jozef Kremeň
  • Eva Petrovová
  • Slávka Flešárova
Original Article
  • 12 Downloads

Abstract

Like in most European countries, the population of the European beaver (Castor fiber) in Slovakia became extinct in the nineteenth century. Thanks to reintroduction of beavers in neighboring states, after a long break the beaver returns also to the territory of Slovakia. This has particularly affected the present distribution of beavers in the Slovak Republic. The first aim of the work was to find phylogenetic similarities of the northeastern Slovak population with the Ukrainian and Polish ones comparing their adult skulls and mandibles on the basis of craniometric measurements. A total of 28 measurements were taken on each skull and mandible. The statistical evaluation showed that the most similar were the Slovak and Ukrainian skulls, while in 8 cranial parameters the Ukrainian and Polish populations were found to be significantly different. The second aim was related to their ability to fell trees. The enamel thickness of incisors in the jaw and mandible were compared within the Slovak sample by measuring for 18 teeth, which were previously scanned by the X-Ray Computer Tomography. The results showed that the average thickness of incisors enamel in the mandible was 0.34 mm, while the incisors of the maxilla had enamel approximately 0.29 mm thick.

Keywords

Castor fiber European beaver Skull morphometrics Craniometry Enamel thickness Incisors 

Notes

Acknowledgments

Valuable comments from two anonymous reviewers of this journal are gratefully acknowledged. The work was realized within the framework of the project ITMS No. 26220120066 “Centre of excellence for biomedical technologies”, which is supported by the Operational Program “Research and Development” financed through the European Regional Development Fund.

Funding

This study was funded by the project ITMS No. 26220120066 “Centre of excellence for biomedical technologies.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

This study did not require official or institutional ethical approval.

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Copyright information

© Institute of Zoology, Slovak Academy of Sciences 2018

Authors and Affiliations

  1. 1.Department of Anatomy, Histology and PhysiologyUniversity of Veterinary Medicine and Pharmacy in KosiceKošiceSlovak Republic
  2. 2.Department of Animal AnatomyFaculty of Veterinary Medicine of the National University of Life and Environmental Sciences of UkraineKievUkraine
  3. 3.Department of Biomedical Engineering and MeasurementFaculty of Mechanical Engineering of Technical University of KošiceKošiceSlovak Republic
  4. 4.Faculty of Forestry, University of Technology in ZvolenKošiceSlovak Republic
  5. 5.Department of the Environment, Veterinary Legislation and EconomyUniversity of Veterinary Medicine and Pharmacy in KosiceKošiceSlovak Republic

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