Adrenocortical and bioenergetic responses to cold in laboratory-born northern red-backed voles (Myodes rutilus) from two populations in South Siberia, Russia

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.1139/cjz-2016-0314

Аннотация: In animal populations inhabiting ecologically suboptimal environmental conditions, phenotypical shifts in physiological traits responsible for coping with environmental challenges can be expected. If such variations are of heritable origin, then they will manifest themselves even in individuals bred in captivity. In laboratory-born red-backed voles (Myodes rutilus (Pallas, 1779)) originating from a population with constantly low density, maximum cold-induced metabolic rates were higher than in voles from a high-density population, similar to the data obtained on wild-caught individuals from the same populations. However, unlike wild-caught voles, in laboratory-born individuals maintained under comfortable conditions, we revealed no interpopulation differences either in basal plasma corticosterone level or in corticosterone response to acute cooling. These data confirm the suggestion about the heritable origin of increased maximum cold-induced metabolic rate in a red-backed vole population with relatively low density.

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Издание

Журнал: Canadian Journal of Zoology

Выпуск журнала: Т.96, 7

Номера страниц: 660-666

ISSN журнала: 00084301

Издатель: NRC Research Press

Авторы

  • Polikarpov I.A. (Institute of Systematics and Ecology of Animals SB RAS)
  • Titova T.V. (Institute of Systematics and Ecology of Animals SB RAS)
  • Kondratyuk E.Y. (Institute of Systematics and Ecology of Animals SB RAS)
  • Novikov E.A. (Novosibirsk State Agrarian University)

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