DAILY ENERGY-EXPENDITURE AND THE COST OF ACTIVITY IN MAMMALS
DAILY ENERGY-EXPENDITURE AND THE COST OF ACTIVITY IN MAMMALS
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DOI：
10.1093/icb/32.2.238
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发表时间：
1992-01-01
期刊：
影响因子：
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通讯作者：
KARASOV, WH
中科院分区：
文献类型：
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作者：
KARASOV, WH
在17种哺乳动物中，不包括体温调节和生产成本的田间代谢率（指定为FMR*）平均为2.65 ×标准代谢率（SMR）。通过从FMR* 中减去与SMR和营养物质同化相关的每日能量消耗来计算每日活动成本。活动的总支出与每日标准代谢的总支出相似。计算表明，哺乳动物用于运动的支出可能占日常活动成本的一半以下。还审查了哺乳动物从事其他类型活动的支出。在日常活动期间，陆地哺乳动物消耗能量的速度约为4.1倍SMR。讨论了能量增量在时间-能量预算、热能预算和觅食经济学分析中的效用。
Among 17 species of mammals, field metabolic rates exclusive of thermoregulatory and productive costs (designated FMR*) averaged 2.65 x standard metabolism (SMR). Daily activity costs were calculated by subtraction from FMR* of the daily energy expenditure associated with SMR and assimilation of nutrients. Total expenditure for activity was of a similar magnitude to that for daily standard metabolism. Calculations indicate that expenditures by mammals for locomotion probably account for less than half of daily activity costs. Expenditures by mammals engaged in other kinds of activities are also reviewed. During their daily activity periods, terrestrial mammals expend energy at a rate of about 4.1 x SMR. The utility of energetic increments for activity in time-energy budgets, thermal energy budgets, and analyses of the economics of foraging are discussed.