Thompson S D, Power M L, Rutledge C E, Kleiman D G
Department of Zoological Research, National Zoological Park, Smithsonian Institution, Washington, D.C., USA.
Folia Primatol (Basel). 1994;63(3):131-43. doi: 10.1159/000156807.
Energy metabolism and body temperature were examined in Leontopithecus rosalia, the golden lion tamarin. Total standard metabolic rate (SMR), defined as the metabolic rate of resting, fasted animals within thermoneutrality and during the inactive (nighttime) phase, averaged 381.5 +/- 65.2 ml O2.h-1 (mass-specific metabolic rate 0.520 +/- 0.089 ml O2.g-1.h-1). This value ranges from 73 to 89% of the expected SMR for animals of this body size depending on the predictive equation used. Active-phase resting metabolic rate within thermoneutrality was significantly greater than SMR, averaging 509.0 +/- 44.6 ml O2.h-1 (0.709 +/- 0.062 ml O2.g-1.h-1). Thermal conductance during the inactive phase was 20.3 +/- 2.7 ml O2.h-1.degrees C-1 (0.029 +/- 0.003 ml O2.g-1.h-1.degrees C-1) or 70% of that during the active phase (28.5 +/- 3.2 ml O2.h-1.degrees C-1, 0.042 +/- 0.004 ml O2.g-1.h-1.degrees C-1). These values are about 85% of the mammalian predicted value. Body temperature fluctuated substantially between day (39.6 degrees C) and night (37.4 degrees C). However, none of these differences between circadian phases are unusual for primates (or, indeed, mammals) of similar body size. Although the metabolic rate of Leontopithecus is lower than the predicted one, it is higher than those rates reported for small nocturnal primates with similar food habits. Leontopithecus' modest rates of energy turnover may reflect a combination of phylogenetic constraints, feeding ecology and/or an energy-saving tactic that comprises part of a strategy to maximize reproductive effort. Although callitrichids are often cited as having rapid growth and high reproductive effort, the moderately low SMR of Leontopithecus is consistent with its intrinsic rate of natural increase, which is 90-94% of that expected for a mammal of its body size.
对金狮狨（Leontopithecus rosalia）的能量代谢和体温进行了研究。总标准代谢率（SMR）定义为处于热中性状态且在非活动（夜间）阶段的静息、禁食动物的代谢率，平均为381.5±65.2毫升氧气·小时⁻¹（质量比代谢率为0.520±0.089毫升氧气·克⁻¹·小时⁻¹）。根据所使用的预测方程，该值占这种体型动物预期SMR的73%至89%。在热中性状态下的活动期静息代谢率显著高于SMR，平均为509.0±44.6毫升氧气·小时⁻¹（0.709±0.062毫升氧气·克⁻¹·小时⁻¹）。非活动期的热传导率为20.3±2.7毫升氧气·小时⁻¹·℃⁻¹（0.029±0.003毫升氧气·克⁻¹·小时⁻¹·℃⁻¹），即活动期热传导率（28.5±3.2毫升氧气·小时⁻¹·℃⁻¹，0.042±0.004毫升氧气·克⁻¹·小时⁻¹·℃⁻¹）的70%。这些值约为哺乳动物预测值的85%。体温在白天（39.6℃）和夜间（37.4℃）之间有显著波动。然而，对于体型相似的灵长类动物（实际上，哺乳动物）来说，昼夜阶段之间的这些差异都不异常。尽管金狮狨的代谢率低于预测值，但高于报道的具有相似饮食习惯的小型夜行性灵长类动物的代谢率。金狮狨适度的能量转换率可能反映了系统发育限制、摄食生态学和/或一种节能策略的综合作用，这种策略是将生殖努力最大化的策略的一部分。尽管绢毛猴科动物常被认为具有快速生长和高生殖努力，但金狮狨适度较低的SMR与其自然增长率相一致，其自然增长率是同体型哺乳动物预期值的90%至94%。
