摘要
本文以布氏田鼠的耗氧量为指标，探讨了布氏田鼠的能量代谢特征。布氏田鼠的热中性区为２７．５至３２．５℃，最低静止代谢率（ＲＭＲ）为１．８３６ｍｌＯ＿２／ｇ·ｈ，是期望ＲＭＲ的１３２．６％。最低热传导率为０．１８９ｍｌＯ＿２／ｇ·ｈ，是期望热传导率的１１４．５％。环境温度（Ｔａ）在５－２７．５℃范围内，ＲＭＲ与Ｔａ呈负相关，回归方程为ＲＭＲ＝６．９６８５－０．１８５２Ｔａ，体温稍有降低。Ｔａ３５℃时，ＲＭＲ升高，体温升高１．９℃。布氏田鼠较高的ＲＭＲ和热传导率，较宽的热中性区，及良好的化学体温调节强度等生理生态特征，是对生存环境的适应性反应。
In order to study the characteristics of energy metabdism in Brandt’s voles(Micro-tus brandti),their oxygen consumption,body temperature(Tb)and body weight weremeasured at several ambient temperature(Ta)between 5-35℃,The experiments weretaken from June 20th,1993 to July 10th,1993 at 32 animals.The results showed that the thermoneutral zone for the voles extended from 27.5 to32.5℃. The lowest resting metabolic rate(RMR)was 1.836ml O_2/g·h.It was 132.6%of expectant RMR. The lowest thermal conductance was slightly higher than the expec-tant value(14.5).Below the low critical temperature, RMR increased with reducing Taand Tb decreased lightly. The relationship between RMR and Ta was negative liner:RMR=6.968 5-0. 185 2 Ta.Above the upper critical temperature, RMR increased andTb enhanced 1.9℃. We found,therefore,that Brandt’s voies adaptation to environmental climate wasby means of the slight higher level of RMR and thermal conductance,and high intensityof chemical thermoregulation.
出处
《兽类学报》
CAS
CSCD
北大核心
1994年第3期217-220,共4页
Acta Theriologica Sinica
基金
国家自然科学基金
关键词
鼠害
静止代谢率
布氏田鼠
草原
Resting metabolic rate
Brandt’s vole(Microtus Brandti)
