... for 14,261 ground squirrel genes during periods of activity and torpor are made available for several tissues via an interactive transcriptome browser. This Review also addresses recent findings on molecular interactions responsible for multi-day survival of near-freezing body temperatures, single-digit...

... bone properties in physically active and hibernating juvenile and adult 13-lined ground squirrels (Ictidomys tridecemlineatus, previous genus name Spermophilus). Cortical bone geometry, strength and mineral content were similar in hibernating compared with active squirrels, suggesting that hibernation...

...Carol J. Ormond; Sandra Orgeig; Christopher B. Daniels; William K. Milsom SUMMARY Homeothermic mammals experience pulmonary surfactant dysfunction with relatively small fluctuations in body temperature. However, ground squirrels survive dramatic changes in body temperature during hibernation, when...

... that greater access to energy resources could reduce immunosuppression as a cost of reproduction, minimizing the trade-off between energetic investment in current reproductive effort and survival. I examined the impact of food availability on immune function by provisioning male Belding's ground squirrels...

... for representatives of two ground squirrel species, Spermophilus lateralis and Spermophilus saturatus , that contrast in coloration. Radiative heat gain was quantified as the decrease in metabolic heat production caused by the animal’s exposure to simulated solar radiation. Changes in convective heat loss were...

... control hibernation ground squirrel Spermophilus lateralis The degree to which the parasympathetic nervous system is effective during deep hibernation and arousal from hibernation is a contested issue. One theory asserts that deep hibernation in the ground squirrel Spermophilus ( Citellus...

...Roy F. Burlington; William K. Milsom ABSTRACT This study was designed to determine whether cholinergic receptors are operative in the coronary vessels of a hibernating species (golden mantled ground squirrel, Spermophilus lateralis ) and a nonhibernating species (rat, Rattus norvegicus ) under...

...William K. Milsom; Roy F. Burlington; Mark L. Burleson ABSTRACT The heart rate of anesthetized golden mantled ground squirrels ( Spermophilus lateralis ) falls from 372±20 to 37±9beatsmin −1 during hibernation at 7°C body temperature. Heart rate in the hibernating animals often waxed and waned...