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Keywords: Hibernation
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Journal Articles
J Exp Biol (2022) 225 (8): jeb243407.
Published: 21 April 2022
... rate Energy expenditure Activity Temperature Fish Hibernation Torpor Natural Sciences and Engineering Research Council of Canada Harrison McCain Foundation New Brunswick Innovation Foundation http://dx.doi.org/10.13039/501100000240 University of New...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (1): jeb229542.
Published: 4 January 2022
...Madeleine S. Junkins; Sviatoslav N. Bagriantsev; Elena O. Gracheva ABSTRACT Hibernators thrive under harsh environmental conditions instead of initiating canonical behavioral and physiological responses to promote survival. Although the physiological changes that occur during hibernation have been...
Journal Articles
J Exp Biol (2021) 224 (17): jeb215764.
Published: 6 September 2021
...Birgitte S. Jensen; Angela Fago ABSTRACT Hibernation is a powerful response of a number of mammalian species to reduce energy during the cold winter season, when food is scarce. Mammalian hibernators survive winter by spending most of the time in a state of torpor, where basal metabolic rate...
Journal Articles
J Exp Biol (2021) 224 (12): jeb242560.
Published: 17 June 2021
...Heiko T. Jansen; Brandon Evans Hutzenbiler; Hannah R. Hapner; Madeline L. McPhee; Anthony M. Carnahan; Joanna L. Kelley; Michael W. Saxton; Charles T. Robbins ABSTRACT Hibernation is characterized by depression of many physiological processes. To determine if this state is reversible in a non-food...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (2): jeb231639.
Published: 18 January 2021
...Shen-Hui Xu; Wei-Wei Fu; Jie Zhang; Hui-Ping Wang; Kai Dang; Hui Chang; Yun-Fang Gao ABSTRACT We previously showed that different skeletal muscles in Daurian ground squirrels ( Spermophilus dauricus ) possess different antioxidant strategies during hibernation; however, the reason for these varied...
Journal Articles
J Exp Biol (2019) 222 (19): jeb196493.
Published: 4 October 2019
.... Here, we propose that induced pluripotent stem cells (iPSCs) from unconventional model organisms may retain certain species-specific features that can consequently be investigated in depth in vitro ; we use hibernating mammals as an example. Many species (including ground squirrels, bats and bears) can...
Journal Articles
J Exp Biol (2019) 222 (4): jeb195750.
Published: 22 February 2019
... of mammalian hibernation. In animals housed at constant ambient temperatures (5°C or 25°C, 12 h:12 h light:dark photoperiod), the volume of this depot increased in the autumn and decreased in the spring, suggesting an endogenous circannual pattern. Water-fat MRI revealed that throughout the year this depot...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (3): jeb194548.
Published: 1 February 2019
...Amanda D. V. MacCannell; Kevin J. Sinclair; Charles A. McKenzie; James F. Staples ABSTRACT Obligate hibernators express circannual patterns of body mass and hibernation, which persist under constant laboratory conditions. Brown adipose tissue (BAT) is important for thermogenesis during arousals...
Journal Articles
J Exp Biol (2018) 221 (Suppl_1): jeb162586.
Published: 7 March 2018
...Mallory A. Ballinger; Matthew T. Andrews; Raul K. Suarez; Hans H. Hoppeler ABSTRACT Brown adipose tissue (BAT) is a unique thermogenic tissue in mammals that rapidly produces heat via nonshivering thermogenesis. Small mammalian hibernators have evolved the greatest capacity for BAT because they use...
Journal Articles
J Exp Biol (2018) 221 (4): jeb174508.
Published: 22 February 2018
...Amanda D. V. MacCannell; Ethan C. Jackson; Katherine E. Mathers; James F. Staples ABSTRACT We used electrocardiogram (ECG) telemeters to measure the heart rate of hibernating Ictidomys tridecemlineatus (thirteen-lined ground squirrel). An increase in heart rate from 2.2 to 5 beats min –1 accurately...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (4): jeb168096.
Published: 19 February 2018
...Elisabeth Rosner; Christian C. Voigt ABSTRACT Mammals fuel hibernation by oxidizing saturated and unsaturated fatty acids from triacylglycerols in adipocytes, yet the relative importance of these two categories as an oxidative fuel may change during hibernation. We studied the selective use...
Journal Articles
J Exp Biol (2018) 221 (1): jeb170894.
Published: 4 January 2018
...Shannon E. Currie; Clare Stawski; Fritz Geiser ABSTRACT Many hibernating animals thermoregulate during torpor and defend their body temperature ( T b ) near 0°C by an increase in metabolic rate. Above a critical temperature ( T crit ), animals usually thermoconform. We investigated...
Journal Articles
J Exp Biol (2017) 220 (16): 2939–2946.
Published: 15 August 2017
...Steven J. Swoap; Gerhard Körtner; Fritz Geiser ABSTRACT The eastern pygmy possum ( Cercartetus nanus ) is a small marsupial that can express spontaneous short bouts of torpor, as well as multi-day bouts of deep hibernation. To examine heart rate ( f H ) control at various stages of torpor...
Journal Articles
J Exp Biol (2017) 220 (15): 2748–2756.
Published: 1 August 2017
...Jordan Balaban; Emanuel Azizi ABSTRACT Extended periods of skeletal muscle disuse can cause a significant loss of contractile proteins, which compromises the ability to generate force, mechanical work or power, thus compromising locomotor performance. Several hibernating organisms can resist muscle...
Journal Articles
J Exp Biol (2017) 220 (12): 2196–2202.
Published: 15 June 2017
... Fasting Fourier transform infrared imaging Hibernation Nyctereutes procyonoides Based on our current results using pQCT, three-point bending test, µCT, FTIRI and plasma biochemistry, the preservation of bone in wintering raccoon dogs shares similarities with that of bears. The present data...
Journal Articles
J Exp Biol (2017) 220 (7): 1181–1186.
Published: 1 April 2017
... respiratory motor processes following cold-submergence. Unlike mammalian hibernators with unloaded limb muscles and inactive locomotor systems, respiratory mechanics of frogs counterintuitively allow for ventilatory maneuvers when submerged. Thus, we hypothesized that bullfrogs generate respiratory motor...
Journal Articles
J Exp Biol (2017) 220 (3): 455–459.
Published: 1 February 2017
... evaluated some features of the clotting cascade of black bears, providing novel insights into the underlying mechanisms they evoke for embolic protection during hibernation. We measured activated clotting time, prothrombin time and activated partial thromboplastin time during early denning (December), late...
Includes: Supplementary data
Journal Articles
J Exp Biol (2016) 219 (17): 2582–2595.
Published: 1 September 2016
... of disuse and reduced mechanical loading, such as hibernating mammals and aestivating frogs, consistently exhibit limited or no change in musculoskeletal performance. What factors modulate skeletal muscle and bone mass, and what physiological and molecular mechanisms protect against losses of muscle...
Journal Articles
J Exp Biol (2016) 219 (5): 725–733.
Published: 1 March 2016
... , A. S. ( 2004 ). Overwintering in tegu lizards . In Life in the Cold: Evolution, Mechanisms, Adaptation, and Application, Twelfth International Hibernation Symposium (ed. B. M.   Barnes and H. V.   Carey ), pp. 339 - 348 . Fairbanks, AK : Institute of Artic Biology . Bagshaw , R...
Journal Articles
J Exp Biol (2015) 218 (9): 1281–1289.
Published: 1 May 2015
... The authors declare no competing or financial interests. © 2015. Published by The Company of Biologists Ltd 2015 Summary : Overview of transcriptome regulation by microRNA and its involvement in the coordination of stress survival. Anoxia Environmental stress Freeze-tolerance Hibernation...