Scaling the duration of activity relative to body mass results in similar locomotor performance and metabolic costs in lizards

Scaling the duration of activity relative to body mass results in similar locomotor performance and metabolic costs in lizards
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相对于体重缩放活动持续时间会导致蜥蜴相似的运动性能和代谢成本

DOI:
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发表时间:
2008
影响因子:
2.8
通讯作者:
T. Gleeson
T. Gleeson
中科院分区:
生物学2区
文献类型:
--
作者:
E. R. Donovan;T. Gleeson

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总结本研究探讨了蜥蜴运动的生理反应后,缩放到身体质量的活动回合。我们评估这种方法作为一种方式来比较不同体重的动物之间的运动能量学。由于爬行动物短暂活动的大部分成本在恢复过程中得到偿还,我们专注于运动后过量耗氧量(EPOC)的幅度和持续时间。在跑步机上跑3 g至2400 g的跑步机,持续时间通过将每只动物的跑步时间按体重的1/4幂缩放并允许每只动物以其最大速度跑该持续时间来确定。该方案导致每个物种旅行相同的体长数,并引起类似的阶乘增加V现在O2。活动后,EPOC体积(ml O2)和单位体长活动成本(ml O2/体长)与体重呈线性关系。这项研究表明,在相当数量的身体长度的活动的特定质量的成本是相似的,在很宽的范围内的身体质量,并没有显示出典型的模式时,运动的成本表示在每米的基础上的异速生长缩放。在野外条件下,较大的动物在一次给定的活动中可能比较小的动物行进更大的绝对距离,但可能行进相似的体长数。这项研究表明,如果运动成本是在一个相对的规模(毫升O2每体长旅行),这反映了这些差异,在日常运动距离,运动效率是类似的在很大范围内的身体质量。
SUMMARY This study examines the physiological response to locomotion in lizards following bouts of activity scaled to body mass. We evaluate this method as a way to compare locomotor energetics among animals of varying body mass. Because most of the costs of brief activity in reptiles are repaid during recovery we focus on the magnitude and duration of the excess post-exercise oxygen consumption (EPOC). Lizards ranging from 3 g to 2400 g were run on a treadmill for durations determined by scaling the run time of each animal to the 1/4 power of body mass and allowing each animal to run at its maximum speed for that duration. This protocol resulted in each species traveling the same number of body lengths and incurring similar factorial increases in V̇O2. Following activity, EPOC volume (ml O2) and the cost of activity per body length traveled (ml O2 per body length) scaled linearly with body mass. This study shows that the mass-specific costs of activity over an equivalent number of body lengths are similar across a broad range of body mass and does not show the typical patterns of allometric scaling seen when cost of locomotion are expressed on a per meter basis. Under field conditions larger animals are likely to travel greater absolute distances in a given bout of activity than smaller animals but may travel a similar number of body lengths. This study suggests that if locomotor costs are measured on a relative scale (ml O2 per body length traveled), which reflects these differences in daily movement distances, that locomotor efficiency is similar across a wide range of body mass.
DOI: --
发表时间: 1988-09
期刊: The Journal of experimental biology
影响因子: --
作者:
N. Heglund;C. Taylor
通讯作者: N. Heglund;C. Taylor
DOI: --
发表时间: 1982-04
期刊: The Journal of experimental biology
影响因子: --
作者:
C. Taylor;N. Heglund;G. Maloiy
通讯作者: C. Taylor;N. Heglund;G. Maloiy
DOI: 10.1249/00005768-198401000-00008
发表时间: 1984
影响因子: 4.1
作者:
G. Gaesser;G. Gaesser;G. Brooks;G. Brooks
通讯作者: G. Gaesser;G. Gaesser;G. Brooks;G. Brooks
酸中毒和乳酸在疲惫蜥蜴行为低体温中的作用。
DOI: 10.1242/jeb.202.3.325
发表时间: 1999
期刊: The Journal of experimental biology
影响因子: --
作者:
Wagner,EL;Scholnick,DA;Gleeson,TT
通讯作者: Gleeson,TT
肌肉纤维和运动的缩放。
DOI: 10.1242/jeb.168.1.243
发表时间: 1992
期刊: The Journal of experimental biology
影响因子: --
作者:
Rome,LC
通讯作者: Rome,LC