时间和温度对从冬眠中复温最大速率的影响。
Temporal and temperature effects on the maximum rate of rewarming from hibernation.
作者信息
Utz Jenifer C, Velickovska Vanja, Shmereva Anastacia, van Breukelen Frank
机构信息
School of Life Sciences University of Nevada, Las Vegas 4505 Maryland Parkway Las Vegas, NV 89154-4004.
出版信息
J Therm Biol. 2007 Jul;32(5):276-281. doi: 10.1016/j.jtherbio.2007.02.002.
During hibernation animals oscillate from near ambient (T(a)) to euthermic body temperatures (T(b)). As animals arouse, the rate of rewarming (RRW) might be expected to simply increase as a function of time. We monitored the T(b) of golden-mantled ground squirrels (Spermophilus lateralis) housed at 4, 8, 12, and 16 degrees C during natural arousals. The maximum RRW, the time required to reach a maximum RRW, and the relative time index all demonstrated negative relationships with T(a). The T(b) corresponding to maximal RRW demonstrated a positive relationship with T(a). Squirrels reached maximal RRW when they had generated 30 to 40% of the heat required to reach a euthermic T(b). These data suggest that arousal is more constrained than expected and that both time and temperature influence the RRW.
在冬眠期间，动物的体温在接近环境温度（Ta）和正常体温（Tb）之间波动。随着动物苏醒，复温速率（RRW）可能会随着时间的推移而简单增加。我们监测了在自然苏醒过程中，饲养在4、8、12和16摄氏度环境下的金黄地松鼠（Spermophilus lateralis）的体温。最大RRW、达到最大RRW所需的时间以及相对时间指数均与Ta呈负相关。与最大RRW相对应的Tb与Ta呈正相关。当松鼠产生达到正常体温Tb所需热量的30%至40%时，它们达到了最大RRW。这些数据表明，苏醒比预期受到更多限制，时间和温度都会影响RRW。
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