中缅树鼩静止代谢率的研究  

CHARACTERISTICS OF THE RESTING METABOLIC RATE OF TREE SHREW, TUPAIA BELANGERI

作　　者：王政昆[1] 孙儒泳[1] 李庆芬[1] 房继明[1] 

机构地区：[1]北京师范大学生物学系

出　　处：《北京师范大学学报（自然科学版）》1994年第3期408-414,共7页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金;云南省应用与基础科学基金

摘　　要：测定了分布于我国云南高原的中缅树（Ｔｕｐａｉａｂｅｌａｎｇｅｒｉ）在不同环境温度下的静止代射率（每小时每克体重的耗氧量，ＹＲＭＲ）和体温调节能力．Ｔ．ｂｅｌａｎｇｅｒｉ的体温为（３７．６±０．１５）℃（冬）和（３８．７±０．１３）℃（夏）；体温受环境温度的影响较大；冬夏２季的下临界温度分别为２７．５和３０．０℃；热中性区内的静止代谢率（ＹＢＭＲ）是（１．５６±０．０３）ｍＬ·ｈ－１·ｇ－１（冬）和（１．９４±０．０９）ｍＬ·ｈ－１·ｇ－１（夏）为体重预期值的１５５．３％和１８２．６％．２季的ＹＢＭＲ没有显著差异；冷压下最低平均热传导（Ｃｍｉｎ）冬夏２季分别为（０．１４４９±０，００２）和（０．１８６０±０．０１）ｍＬ·ｈ－１·ｇ－１·℃－１，为预期值的１７６．９％和１９９．９％，夏季显著高于冬季．Ｔ．ｂｅｌａｎｇｅｒｉ在热能代谢和体温调节方面具有热带小型哺乳动物的特征，同时，又显示出某些适应于高原的特征。The tree shrew (Tupaia belangeri) is the most nouthern species of TUPAIIDAE in the Estern-south Asia.It distributes mainly in the South and Western-south China. The resting metabolic rate (YRMR) and body temperature (Tb) were measured at different ambient temperatures (Ta),and calculated its thermal conductance in laboratory for tree shrew captured from subtropical shrub forest of Yunnan Guizhou Plateau. The main results were as follows.1) The Tb obviously varied with Ta and were stable only in range of 15～25℃ of Ta.The index of homeothermy ability (I= 1 -b ,by Sun and Zeng, 1987) was 0.78 in winter and 0.84 in summer, bing equal to that of root vole in 18～20 day-age. On the average, Tb in room temperatures were 37.6℃ in winter and 38.7℃ in summer,and this would be very favourable to tolerance to high Ta.2) The thermal neutral zone (TNZ) was about at 27.5～35 ℃ in winter and 30～35 ℃ in summer. The YBMR or YRMR (consumption of O2) in TNZ were 1.56 and 1.94 mL· h-1 · g-1 in winter and summer respectively. These were equal to 155% and 183% of expected by Kilieber (1961) respectively. Below TNZ the relationship of YRMR to Ta could be describled by equations: for winter,YRMR=4.6168-0.1108Ta/℃ ,forsummer,YRMR =4.9466-0. 1007Ta /℃. Above TNZ the YRMR increased significantly and the tree shrew would not be died until Ta reached 37.5℃.3)The minimum thermal conductance (Cmin) were 0. 1449 and 0. 1860 mL ·h-1·g-1·℃-1 in winter and summer respectively which were equal to 176.9% and 200% of that predicted by Herreid and Kessal (1967).It were the higher level of YBMR,the high minimun thermal conductance,and the ability to relaxing precision of homeothermy in certain range of Ta that might be considered as the adaptive characteristics to environmental temperatures in subtropical plateau for the tree shrew.

关 键 词：中缅树QU 静止代谢率 热传导 体温调节 代谢 

分 类 号：Q959.837[生物学—动物学]