Daily body temperature rhythms persist under the midnight sun but are absent during hibernation in free-living arctic ground squirrels

Biology Letters

Volumn 8, Issue 1, 2012, Pages 31-34

  Williams, Cory T ^a   Barnes, Brian M ^b   Buck, C Loren ^a  

^a UNIVERSITY OF ALASKA ANCHORAGE   (United States)

^b UNIVERSITY OF ALASKA FAIRBANKS   (United States)

Author keywords

Arctic ground squirrel; Body temperature; Circadian rhythms; Torpor; Zeitgeber

Indexed keywords

ARCTIC ENVIRONMENT; BODY TEMPERATURE; CIRCADIAN RHYTHM; DEER; ENVIRONMENTAL CUE; HIBERNATION; LIGHT AVAILABILITY; PERSISTENCE; POLAR REGION; RODENT;

ARCTIC;

RANGIFER TARANDUS; RODENTIA; SCIURIDAE; SPERMOPHILUS; SPERMOPHILUS PARRYII; VERTEBRATA;

EID: 84856247043     PISSN: 17449561     EISSN: 1744957X     Source Type: Journal    
DOI: 10.1098/rsbl.2011.0435     Document Type: Article

References (15)

1. Dibner, C., Schibler, U. & Albrecht, U. 2010 The mammalian circadian timing system: organization and coordination of central and peripheral clocks. Annu. Rev. Physiol. 72, 517-549. (doi:10.1146/annurev-physiol-021909-135821)
2. Van Oort, B. E. H., Tyler, N. J. C., Gerkema, M. P., Folkow, L., Blix, A. S. & Stokkan, K. A. 2005 Circadian organization in reindeer. Nature 438, 1095-1096. (doi:10.1038/4381095a)
3. Reierth, E. & Stokkan, K. A. 1998 Activity rhythm in high Arctic Svalbard ptarmigan (Lagopus mutus hyperboreus). Can. J. Zool. 76, 2031-2039.
4. Lu, W., Meng, Q. J., Tyler, N. J. C., Stokkan, K. A. & Loudon, A. S. 2010 A circadian clock is not required in an arctic mammal. Curr. Biol. 20, 533-537. (doi:10.1016/j.cub.2010.01.042)
5. Stelzer, R. J. & Chittka, L. 2010 Bumblebee foraging rhythms under the midnight sun measured with radiofrequency identification. BMC Biol. 8, 93. (doi:10.1186/1741-7007-8-93)
6. Buck, C. L. & Barnes, B. M. 1999 Annual cycle of body composition and hibernation in free-living arctic ground squirrels. J. Mamm. 80, 430-442. (doi:10.2307/1383291)
7. Heller, H. C. & Ruby, N. F. 2004 Sleep and circadian rhythms in mammalian torpor. Annu. Rev. Physiol. 66, 275-289. (doi:10.1146/annurev.physiol. 66.032102.115313)
8. Revel, F. G., Herwig, A., Garidoo, M. L., Dardente, H., Menet, J. S., Masson-Pévet, M., Simonneaux, V., Saboureau, M. & Pévet, P. 2007 The circadian clock stops ticking during deep hibernation in the European hamster. Proc. Natl Acad. Sci. USA 104, 13 816-13 820. (doi:10.1073/pnas. 0704699104)
9. Long, R. A., Martin, T. J. & Barnes, B. M. 2005 Body temperature and activity patterns in free-living arctic ground squirrels. J. Mamm. 86, 314-322. (doi:10.1644/BRG-224.1)
10. Dö rrscheidt, G. L. & Beck, L. 1975 Advanced methods for evaluating characteristic parameters (a, t, r) of circadian rhythms. J. Math. Biol. 2, 107-121.
11. Swade, R. H. & Pittendrigh, C. S. 1967 Circadian locomotor activity of rodents in the arctic. Am. Nat. 101, 433-466. (doi:10.1086/282510)
12. Hut, R., Van Oort, B. E. H. & Daan, S. 1999 Natural entrainment without dawn or dusk: the case of the European ground squirrel. J. Biol. Rhythms 14, 290-299. (doi:10.1177/074873099129000704)
13. Hut, R. A., Shepper, A. & Daan, S. 2000 Can the circadian system of a diurnal and a nocturnal rodent entrain to ultraviolet light? J. Comp. Physiol. A 186, 707-715. (doi:10.1007/s003590000124)
14. Barnes, B. M. 1996 Relationships between hibernation and reproduction in male ground squirrels. In Adaptations to the cold (eds F.Geiser, A. J. Hulbert & S.C. Nicol), pp. 71-80. Armidale, Australia: University of New England Press.
15. Williams, C. T., Sheriff, M. J., Schmutz, J. A., Kohl, F., Tøien, Ø., Buck, C. L. & Barnes, B. M. In press. Data logging of body temperatures provides precise information on phenology of reproductive events in a free-living arctic hibernator. J. Comp. Physiol. B (doi:10.1007/s00360-011- 0593-z)