昭通绒鼠体温调节季节性变化和热中性区漂移  

Seasonal variations of thermoregulation and thermal neutral zone shift in Eothenomys olitor

作　　者：杨押佐 贾婷 张浩 王政昆 朱万龙 YANG Yazuo;JIA Ting;ZHANG Hao;WANG Zhengkun;ZHU Wanglong(Key Laboratory of Ecological Adaptive Evolution and Conservation on Animals-Plants in Southwest Mountain Ecosystem of Yunnan Province Higher Institutes College,School of Life Sciences,Yunnan Normal University,Engineering Research Center of Sustainable Development and Utilization of Biomass Energy Ministry of Education,Key Laboratory of Yunnan Province for Biomass Energy and Environment Biotechnology,Kunming 650500,China;Yunnan College of Business Management,Kunming 650106,China)

机构地区：[1]云南省高校西南山地生态系统动植物生态适应进化及保护重点实验室,云南师范大学,生命科学学院生物能源持续开发利用教育部工程研究中心云南省生物质能与环境生物技术重点实验室,昆明650500 [2]云南经济管理学院,昆明650106

出　　处：《生物学杂志》2021年第6期41-44,共4页Journal of Biology

基　　金：国家自然科学基金项目(31760118);云南省中青年学术和技术带头人后备人才项目(2019HB013)。

摘　　要：为探究我国云南省昭通地区的昭通绒鼠(Eothenomys olitor)生理适应特征,分别于夏季和冬季测定其在5℃~30℃范围内的体温、代谢率和热传导。结果表明:昭通绒鼠的体温、静止代谢率和热传导存在季节性差异;夏季体温高于冬季,分别为36.17℃±0.52℃和35.55℃±0.46℃;热中性区表现出季节性差异,夏季和冬季的热中性区分别为20℃~27.5℃和15℃~25℃,即呈现出冬季的下限临界点较夏季低;在热中性区内,夏季静止代谢率(2.76±0.19)mL O_(2)/(g·h)低于冬季(4.78±0.22)mL O_(2)/(g·h);夏季和冬季的热传导在热中性区内都基本维持稳定,分别为(0.18±0.02)和(0.31±0.04)mL O_(2)/(g·h·℃)。结果表明昭通绒鼠通过调节体温、代谢率和热传导来适应昭通地区冬夏两季温差较大、年极端气温较低的气候特征。In order to explore the physiological adaptation characteristics of Eothenomys olitor in Zhaotong area,body temperature,resting metabolic rate(RMR)and thermal conductance(C)were measured in the range of 5℃-30℃in summer and winter,respectively.The results showed that there were seasonal differences in body temperature,RMR and C value in E.olitor.Body temperature in summer was higher than that in winter,and the average body temperature was 36.17℃±0.52℃and 35.55℃±0.46℃,respectively.The thermal neutral zone(TNZ)showed seasonal differences.TNZ was 20℃-27.5℃in summer and 15℃-25℃in winter respectively,which showed that the lower limit critical point in winter was lower than that in summer.In TNZ,RMR in summer(2.76±0.19)mL O_(2)/(g·h)was lower than that in winter(4.78±0.22)mL O_(2)/(g·h).In summer and winter,C value in E.olitor was stable in TNZ,and the mean values were(0.18±0.02)and(0.31±0.04)mL O_(2)/(g·h·℃),respectively.The above results suggested E.olitor adapted to the climate characteristics of Zhaotong area,which were large temperature difference between winter and summer and low annual extreme temperature by regulating body temperature,RMR and C value.

关 键 词：昭通绒鼠 热中性区 体温调节 静止代谢率 热传导 

分 类 号：Q41[生物学—生理学]