Functional differentiation of teeth in the wolf (Canis lupus, Canidae, Carnivora)
- Authors: Severtsov A.S.1, Kormylitsin A.A.1, Severtsova E.A.1, Yatsuk I.A.1
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Affiliations:
- Department of Biology
- Issue: Vol 43, No 9 (2016)
- Pages: 1271-1280
- Section: Article
- URL: https://journals.rcsi.science/1062-3590/article/view/182281
- DOI: https://doi.org/10.1134/S1062359016110133
- ID: 182281
Cite item
Abstract
Vector analysis has been used to investigate the functions of incisors, canine teeth, premolars, and molars in a sample of 411 wolf skulls and to elucidate the morphological features that confer resistance to mechanical loading (pressure from the prey tissues upon jaw clenching and fracture under pressure directed along the jaw) to the teeth. Differentiation of the teeth was due to functional differences and showed only partial conformity to the anatomical nomenclature. Canine teeth and i3 serve for the infliction of wounds upon an attack. These teeth, together with I1-2/1-3, are used to tear off parts of the prey. The premolars p1-3/2-4 are used to hold, tear off, and carry parts of the prey. The carnassials р4 and m1 are used to break bones and cut the soft tissues. The rear part (talonid) of m1 and m1-2/2 serve for further disintegration of food. The anterior premolars p1/1 and m3 are undergoing a rudimentation process, as evident from higher frequency of developmental defects compared to that in other teeth. Breakage and chipping of the teeth is rare, except for cases of extreme loading, since mechanical strength of the teeth is sufficiently high.
About the authors
A. S. Severtsov
Department of Biology
Author for correspondence.
Email: asevertsov@yandex.ru
Russian Federation, Moscow, 119991
A. A. Kormylitsin
Department of Biology
Email: asevertsov@yandex.ru
Russian Federation, Moscow, 119991
E. A. Severtsova
Department of Biology
Email: asevertsov@yandex.ru
Russian Federation, Moscow, 119991
I. A. Yatsuk
Department of Biology
Email: asevertsov@yandex.ru
Russian Federation, Moscow, 119991