Journal Title
Title of Journal: J Comp Physiol B
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Abbravation: Journal of Comparative Physiology B
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Publisher
Springer-Verlag
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Authors: Mutlu Kart Gür Roberto Refinetti Hakan Gür
Publish Date: 2008/09/17
Volume: 179, Issue: 2, Pages: 155-164
Abstract
We studied daily rhythmicity of body temperature T b before and during hibernation in Anatolian ground squirrels Spermophilus xanthoprymnus under natural and laboratory conditions using surgically implanted temperature loggers Under both conditions robust daily T b rhythmicity with parameters comparable to those of other ground squirrel species was observed before but not during hibernation Euthermic animals had robust daily T b rhythms with a mean of 370°C and a range of excursion of approximately 4°C No T b rhythm was detected during torpor bouts either because T b rhythmicity was absent or because the daily range of excursion was smaller than 02°C The general patterns of hibernation that we observed in Anatolian ground squirrels were similar to those previously observed by other investigators in other species of ground squirrelsWe extend our thanks to D Kolonkaya for the administrative management of the project We are grateful to G R Michener for providing helpful comments on the field and laboratory studies We thank the members of the Ünsal Family for their logistic support We also thank E Kart for assistance in the field and C Y Güngörmüş and H Çakan for assistance in the laboratory Funds for the project were provided by the Scientific and Technical Research Council of Turkey TUBITAK TBAG104T279 Project Preparation of this paper was partially supported by US National Science Foundation grant IBN0343917 to R Refinetti
Keywords:
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