| 罗谦,柳鹏飞,王政昆,朱万龙,刘春燕,郭宪国,董文鸽.2011.大绒鼠及高山姬鼠体温调节和蒸发失水的日节律.动物学杂志,46(1):36-44. |
| 大绒鼠及高山姬鼠体温调节和蒸发失水的日节律 |
| Daily Rhythms of Body Temperature Regulation and Evaporative Water Loss in Eothenomys miletus and Apodemus chevrieri |
| 投稿时间：2010-07-14 修订日期：2010-11-19 |
| DOI： |
| 中文关键词: 大绒鼠 高山姬鼠 体温调节 蒸发失水 日节律 |
| 英文关键词:Eothenomys miletus Apodemus chevrieri Body temperature regulation Evaporative water loss Daily rhythms |
| 基金项目:云南省科技强省重点项目 (No.2007C0005Z1),云南省教育厅重大项目 (No.ZD2009007),云南师范大学青年科研基金项目 (No.10QZ05); |
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| 中文摘要: |
| 为比较横断山区同域分布物种大绒鼠 (Eothenomys miletus) 和高山姬鼠 (Apodemus chevrieri) 的日节律特征,对两种鼠在24 h中4个时间段 (04:00~06:00时、10:00~12:00时、16:00~18:00时和22:00~24:00时) 的体温和蒸发失水进行了测定。结果显示,大绒鼠、高山姬鼠的体温具有相似的日节律,最高值和最低值分别出现在04:00~06:00时和10:00~12:00时,分别为 (37.45±0.17)℃和 (37.30±0.24)℃及 (35.77±0.42)℃和 (36.05±0.11)℃;大绒鼠与高山姬鼠种间的非颤抖性产热、基础代谢率、热传导和干燥热传导,在4个时段间都有显著差异;蒸发失水仅在16:00~18:00时具有种间差异;大绒鼠的基础代谢率和蒸发失水在24 h内具有节律性波动;高山姬鼠非颤抖性产热的日节律变化与体温同步;高山姬鼠的热传导和干燥热传导出现了与环境温度类似的变化趋势。结果表明,同域分布的大绒鼠和高山姬鼠具有相似的体温日节律,高山姬鼠比大绒鼠具有更强的日生理调节能力来维持水和能量平衡,以适应横断山独特的气候特征。 |
| 英文摘要: |
| To compare daily rhythms of Eothenomys miletus and Apodemus chevrieri which sympatric distributed in Hengduan Mountains region,their thermoregulation and evaporative water loss (EWL) were measured four times in 04:00-06:00,10:00-12:00,16:00-18:00,and 22:00-24:00 within 24 hours from 24 adult samples (12♀ and 12 ♂ ) for each species.E.miletus and A.chevrieri had a similar body temperature (Tb) circadian rhythm,their maximum body temperature,37.45±0.17℃ and 37.30±0.24℃,occurred at 04:00-06:00,respectively,and their minimum body temperature,35.77±0.42℃ and 36.05±0.11℃,occurred at 10:00-12:00.However,significant differences between the two species were found in nonshivering thermogenesis (NST),basal metabolic rate (BMR),thermal conductance (C) and dry thermal conductance (Cdry).EWL appeared a significant difference only at 16:00-18:00.E.miletus had clear circadian rhythms in BMR and EWL.The NST circadian variation in A.chevrieri corresponded to the Tb oscillations,moreover the daily rhythms of C and Cdry were also synchronous with ambient temperature.Suffering high temperature and low temperature,the two species adapt to environmental conditions by taking the similar daily rhythms of Tb.Compared to E.miletus, A.chevrieri has a stronger physiological regulation mechanism to maintain water and energy balance. |
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