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Growth Rate of Cheek Teeth in Narrow-Skulled Vole (Lasiopodomys gregalis) Depending on Food Abrasiveness

Authors
  • Kropacheva, Yu. E.1
  • Smirnov, N. G.1
  • Zykov, S. V.1
  • 1 Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620144, Russia , Yekaterinburg (Russia)
Type
Published Article
Journal
Russian Journal of Ecology
Publisher
Pleiades Publishing
Publication Date
Nov 01, 2021
Volume
52
Issue
6
Pages
496–503
Identifiers
DOI: 10.1134/S1067413621060072
Source
Springer Nature
Keywords
Disciplines
  • Article
License
Yellow

Abstract

AbstractThe growth rate of the first lower molar and its wear features have been studied in narrow-skulled vole individuals (n = 39) that received hard and soft feeds under laboratory conditions. Using tetracycline markers, we have found that the tooth height increases by 0.33–0.56 mm throughout the day. Voles that received soft feed, in general, had a lower rate of molar growth, a lower crown, and a more obtuse wear angle of the chewing surface than the animals feeding on hard feed; they were also characterized by the appearance of lateral wear facets. As these signs of wear developed in animals fed soft food, the growth rate of the molar increased.

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