Nicol S C, Maskrey M
J Appl Physiol Respir Environ Exerc Physiol. 1977 Apr;42(4):537-44. doi: 10.1152/jappl.1977.42.4.537.
By use of a barometric technique, tidal volume (VT), minute volume (VE), respiratory frequency (f), and respiratory evaporative heat loss (Eex) were measured from conscious unrestrained potoroos (Potorous tridactylus), barred bandicoots (Perameles gunnii), and New Zealand white rabbits (Oryctolagus cuniculus) at temperatures in and above the thermoneutral zone (TNZ). Rectal temperature (Tre) and oxygen consumption were also measured. VT initially decreased with rising Ta, but in the potoroo and rabbit it then increased past the resting level. VE increased much more in the marsupials than in the rabbit, and higher Eex maxima were also found for the marsupials. The marsupials had high Q10's above the TNZ, and had a panting efficiency of 80%. The rabbits had a Q10 of 1.9 above the TNZ and 100% panting efficiency. The high VE and Eex and low panting efficiency of the marsupials may be due to their lower Tre which allows transfer of heat from the environment to the animal.
通过使用气压技术，在热中性区（TNZ）及以上温度下，对清醒自由活动的长鼻袋狸（Potorous tridactylus）、条纹袋狸（Perameles gunnii）和新西兰白兔（Oryctolagus cuniculus）测量潮气量（VT）、分钟通气量（VE）、呼吸频率（f）和呼吸蒸发散热（Eex）。还测量了直肠温度（Tre）和耗氧量。VT最初随Ta升高而降低，但在长鼻袋狸和兔子中，随后又超过静息水平而增加。有袋动物的VE增加幅度比兔子大得多，并且有袋动物的Eex最大值也更高。有袋动物在TNZ以上具有较高的Q10值，且喘息效率为80%。兔子在TNZ以上的Q10值为1.9，喘息效率为100%。有袋动物的高VE和Eex以及低喘息效率可能是由于它们较低的Tre，这使得热量能够从环境传递到动物身上。
