TY - JOUR

T1 - Biomechanic Potentials of the Canine and Carnassial Teeth in the Strains of American Mink (Neogale vison Schreber 1777) Following Selection for Defensive Behavior Traits as Compared to a Natural Population and Related Species

AU - Vasil’ev, A. G.

AU - Vasil’eva, I. A.

AU - Chibiryak, M. V.

AU - Lokhneva, N. A.

AU - Trapezov, O. V.

N1 - This work was carried out within the framework of state assignments of the Institute of Plant and Animal Ecology, Ural Branch, Russian Academy of Sciences (project no. 122021000091-2) and the Institute of Cytology and Genetics, Siberian Branch, Russian Academy of Sciences (project no. FWNR-2022-0023). Biomechanic Potentials of the Canine and Carnassial Teeth in the Strains of American Mink (Neogale vison Schreber 1777) Following Selection for Defensive Behavior Traits as Compared to a Natural Population and Related Species / A. G. Vasil'ev, I. A. Vasil'eva, M. V. Chibiryak [et al.] // Biology Bulletin. – 2025. – Vol. 52, No. 4. – P. 1-13. – DOI 10.1134/S1062359025700074.

PY - 2025/7/18

Y1 - 2025/7/18

N2 - Abstract: Differences between the strains of aggressive and tame American minks that arose as a result of selection for traits of defensive behavior (16–17 generations) were revealed based on the biomechanical indices of the mandible characterizing the mechanical potentials of the canine and carnassial teeth. The results are consistent with D.K. Belyaev’s theory of destabilizing selection: along with an increase in the variability of functions and the destabilization of the historically established system of their sexual differences (sexual dimorphism), new biomechanic features of the mandible were formed in the strain of tame minks. In contrast, the control strain of nonselected minks unaffected by selection retained significant sex differences in the biomechanical indices. Between the American minks from a Canadian natural population and the strains of aggressive and tame individuals, the differences in biomechanical indicators were less pronounced than between the strains themselves. Differences among the American mink, the European mink (Mustela lutreola L. 1758), and the Siberian weasel (M. sibirica Pallas 1773) in the biomechanical potentials of the canine and carnassial teeth of the mandible which reflect specializations in the genus Neogale and the specifics of the hunting behavior of the species were found. In the invasive American mink, the mechanical potential (MP) of the canine tooth prevails, compared to the MP of the carnassial tooth in both the European mink and the Siberian weasel, this trait being capable of ensuring the divergence of their trophic niches and contributing to the preservation of native species in areas of their sympatry with N. vison.

AB - Abstract: Differences between the strains of aggressive and tame American minks that arose as a result of selection for traits of defensive behavior (16–17 generations) were revealed based on the biomechanical indices of the mandible characterizing the mechanical potentials of the canine and carnassial teeth. The results are consistent with D.K. Belyaev’s theory of destabilizing selection: along with an increase in the variability of functions and the destabilization of the historically established system of their sexual differences (sexual dimorphism), new biomechanic features of the mandible were formed in the strain of tame minks. In contrast, the control strain of nonselected minks unaffected by selection retained significant sex differences in the biomechanical indices. Between the American minks from a Canadian natural population and the strains of aggressive and tame individuals, the differences in biomechanical indicators were less pronounced than between the strains themselves. Differences among the American mink, the European mink (Mustela lutreola L. 1758), and the Siberian weasel (M. sibirica Pallas 1773) in the biomechanical potentials of the canine and carnassial teeth of the mandible which reflect specializations in the genus Neogale and the specifics of the hunting behavior of the species were found. In the invasive American mink, the mechanical potential (MP) of the canine tooth prevails, compared to the MP of the carnassial tooth in both the European mink and the Siberian weasel, this trait being capable of ensuring the divergence of their trophic niches and contributing to the preservation of native species in areas of their sympatry with N. vison.

KW - bite force

KW - domestication

KW - mandible

KW - mink

KW - variation

KW - weasel

UR - https://www.mendeley.com/catalogue/346191c3-b2af-3b1f-853d-b6eeb619f01e/

UR - https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105011032828&origin=inward

UR - https://www.elibrary.ru/item.asp?id=82650387

U2 - 10.1134/S1062359025700074

DO - 10.1134/S1062359025700074

M3 - Article

VL - 52

JO - Biology Bulletin

JF - Biology Bulletin

SN - 1062-3590

IS - 4

M1 - 113

ER -