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首页> 外文期刊>Journal of Comparative Physiology, B. Biochemical, Systemic, and Environmental Physiology >Daily energy expenditure of the grey mouse lemur (Microcebus murinus): asmall primate that uses torpor
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Daily energy expenditure of the grey mouse lemur (Microcebus murinus): asmall primate that uses torpor

机译：灰鼠狐猴的日常能源支出（Microcebus murinus）：asmall使用torpor的灵长类动物

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We aimed to investigate the pattern of utilisation of torpor and its impact on energy budgets in free-living grey mouse femurs (Microcebus murinus), a small nocturnal primate endemic to Madagascar. We measured daily energy expenditure (DEE) and water turnover using doubly labelled water, and we used temperature-sensitive radio collars to measure skin temperature (T-sk) and home range. Our results showed that male and female mouse lemurs in the wild enter torpor spontaneously over a wide range of ambient temperatures (T-a) during the dry season, but not during the rainy season. Mouse lemurs remained torpid between 1.7-8.9 h with a daily mean of 3.4 h. and their T-sk s fell to a minimum of 18.8 degreesC. Mean home ranges of mouse lemurs which remained normothermic were similar in the rainy and dry season. During the dry season? the mean home range of mouse lemurs showing daily torpor was significantly smaller than that of animals remaining normothermic. The DEE of M. murinus remaining normothermic in the rainy season (122 +/- 65.4 kJ day(-1)) was about the same of that of normothermic mouse lemurs in the dry season (115.5 +/- 27.3 kJ day(-1)). During the dry season, the mean DEE of M. murinus that utilised daily torpor was 103.4 +/- 32.7 kJ day(-1) which is not significantly different from the mean DEE of animals remaining normothermic. We found that the DEE of mouse lemurs using daily torpor was significantly correlated with the mean temperature difference between T-sk and T-a (r(2) = 0.37) and with torpor bout length (r(2) = 0.46), while none of these factors explained significant amounts of variation in the DEE of the mouse lemurs remaining normothermic. The mean water flux rate of mouse lemurs using daily torpor (13.0 +/- 4.1 ml day(-1)) was significantly lower than that of mouse lemurs remaining normothermic (19.4 +/- 3.8 ml day(-1)), suggesting the lemurs conserve water by entering torpor. Thus, this first study on the energy budget of free-ranging M. murinus demonstrates that torpor may not only reflect its impact on the daily energy demands, but involve wider adaptive implications such as water requirements.
机译：我们的旨在调查麻痹的利用方式及其对自由生活灰鼠股骨（Microcebus Murinus）的能源预算的影响，这是一个小夜间动物特有的小马达加斯加。我们使用双重标记的水来测量日常能量支出（DEE）和水营道，我们使用温度敏感的无线电圈测量皮肤温度（T-SK）和家庭范围。我们的研究结果表明，在旱季期间，野生的男性和雌性小鼠狐猴在旱季中自发地进入Torpor，但在雨季期间没有。小鼠狐猴在1.7-8.9小时之间保持扭曲，每日平均值为3.4小时。他们的T-SK S跌至至少18.8℃。平均小鼠狐猴的家庭范围仍然在雨季和干燥的季节中相似。在干燥的季节？显示每日托麦特的卑鄙狐猴的平均家庭范围明显小于剩余常温的动物。在雨季（122 +/- 65.4 kJ日（-1））中剩余的曼疗法剩余的常温（122 +/- 65.4 kJ（-1））与干燥季节的常温小鼠狐猴（115.5 +/- 27.3 kJ日（-1 ）））。在干燥的季节期间，使用每日托沼的M.Murinus的平均德国为103.4 +/- 32.7 kJ日（-1），与剩余的常温的平均牡鹿没有显着差异。我们发现，使用每日波纹的小鼠狐猴的DEE与T-SK和TA（R（2）= 0.37）之间的平均温度差异显着相关，并且晕圈突出长度（R（2）= 0.46），而且没有这些因素解释了剩余的常温的小鼠狐猴的Dee中的大量变异。使用每日扭曲的小鼠狐猴的平均水通量率（13.0 +/- 4.1ml天（-1））显着低于小鼠狐猴剩余的常温（19.4 +/- 3.8毫升（-1）），表明狐猴通过进入麻木来保护水。因此，这对自由范围的M.Murinus的能量预算进行了第一次研究表明TITOR撞击可能不仅反映其对日常能源需求的影响，而且涉及更广泛的自适应影响，例如水需求。

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