Specific features of the record of hibernation on the incisor surface in Allocricetulus hamsters

Klevezal, G. A.; Feoktistova, N. Yu.; Shchepotkin, D. V.; Surov, A. V.

doi:10.1134/s106235901508004x

Cited by 7 publications

(1 citation statement)

References 11 publications

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“…Thus, it was shown for the Ciscaucasian hamster (Mesocricetus raddei), that the width of increments within the "hibernation zone" correlates with the duration of normothermia bouts (Klevezal et al, , 2018. These data differ from the data obtained for the Eversmann's hamster (Allocricetulus eversmanni) in which the correlation between the number of narrow increments on the incisor surface and the number of normothermia bouts within the "hibernation zone" was not found (Klevezal et al, 2015). Studies of teeth in the Common hamster (Cricetus cricetus) revealed that daily increments are well-defined on the incisor surface, but they cannot be found in the "hibernation zone" (Klevezal et al, 2020).…”

Section: Introductionmentioning

confidence: 62%

Hibernation Records on the Incisor Surface in the Turkish Hamster (Mesocricetus brandti) (Rodentia, Cricetidae)

Зайцева

Chunkov

Omarov

2020

Povolžskij èkologičeskij žurnal

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The teeth of an adult female of the Turkish hamster (Mesocricetus brandti) after hibernation in semi-natural conditions were examined to reveal a relationship between the hibernation pattern on the incisor surface and the data of a temperature logger. The female spent the winter in a burrow prepared by herself inside a wintering cage from October 2018 till May 2019. A temperature logger was implanted to the animal intraperitoneally to record body temperature at 20-min intervals. Regular bouts of hypothermia started in mid-October. The longevity of each hypothermia bout increased whereas the minimum body temperature decreased and reached its lowest value in March. Later, the process proceeded backwards until the end of the heterothermia period. In the apical region of the incisor, daily increments were wide and well-distinguished which indicates that they had formed before the onset of the heterothermal period. In the basal region, closer to the growth zone, the increments were narrow and distinct, and their number corresponded in general to the number of normothermia episodes bouts. At the very base of the incisor as well as at its apical part, typical daily increments were revealed again. However, no correlation between the longevity of normothermia bouts and the width of increments was found. These data varied greatly from two other hamsters. In the Ciscaucasian hamster (Mesocricetus raddei) the number and character of increments comply with the number and duration of normothermia bouts, in the Common hamster (Cricetus cricetus), the “hibernation zone” was not recorded on the incisor surface. The Turkish hamster demonstrate an intermediate pattern, which we explain by quite different hibernation conditions of these species.

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Section: Introductionmentioning

confidence: 62%