Resting vs. active: a meta-analysis of the intra- and inter-specific associations between minimum, sustained, and maximum metabolic rates in vertebrates.
Resting vs. active: a meta-analysis of the intra- and inter-specific associations between minimum, sustained, and maximum metabolic rates in vertebrates.
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DOI：
10.1111/1365-2435.12879
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发表时间：
2017-09
影响因子：
5.2
通讯作者：
Rezende EL
中科院分区：
文献类型：
--
作者：
Auer SK;Killen SS;Rezende EL
有氧能力的变化对脊椎动物的生理学、生态学和进化有着深远的影响。无论是在休息或活动时，动物都被限制在由其最小（minMR）和持续或最大代谢率（upperMR）确定的能量范围内运行。MinMR和upperMR在个体和物种之间可能有很大差异，但通常被认为是相互联系的。具体而言，minMR被认为反映了支持upperMR所需的机器的空转成本。然而，以前基于有限数据集的分析得出了关于其关联的一般性和强度的相互矛盾的结论。在这里，我们对它们的关系进行了首次全面评估，基于大量已发表的minMR和upperMR之间的种内（n = 176）和种间（n = 41）表型相关性的估计，估计为运动诱导的最大代谢率（VO 2max），冷诱导的峰值代谢率（Msum）或每日能量消耗（DEE）。我们的Meta分析表明，在脊椎动物分类学类别中，minMR和upperMR之间存在普遍的正相关性。然而，在不同分类群中，minMR和Msum之间以及minMR和DEE之间的种内相关性比minMR和VO 2max之间的相关性更强。正如预期的那样，在所有性状和脊椎动物类别中，种间相关性估计值始终高于种内估计值。在哺乳动物中观察到这种总趋势的一个有趣的例外，与鸟类形成对比，并且在minMR和Msum之间没有表现出相关性。我们推测这是由于棕色脂肪作为产热组织的进化和募集，这说明了一些物种和谱系可能如何规避这种看似普遍的关联。我们的结论是，尽管在一些变异的类群和性状，主张minMR和upperMR呈正相关的脊椎动物物种内和跨普遍成立。因此，生态学和比较研究应该考虑到这些性状中任何一个的变异可能部分反映了对其他代谢参数选择的相关反应。本文提供了一个简单的摘要。
Variation in aerobic capacity has far reaching consequences for the physiology, ecology, and evolution of vertebrates. Whether at rest or active, animals are constrained to operate within the energetic bounds determined by their minimum (minMR) and sustained or maximum metabolic rates (upperMR). MinMR and upperMR can differ considerably among individuals and species but are often presumed to be mechanistically linked to one another. Specifically, minMR is thought to reflect the idling cost of the machinery needed to support upperMR. However, previous analyses based on limited datasets have come to conflicting conclusions regarding the generality and strength of their association. Here we conduct the first comprehensive assessment of their relationship, based on a large number of published estimates of both the intra‐specific (n = 176) and inter‐specific (n = 41) phenotypic correlations between minMR and upperMR, estimated as either exercise‐induced maximum metabolic rate (VO 2max), cold‐induced summit metabolic rate (Msum), or daily energy expenditure (DEE). Our meta‐analysis shows that there is a general positive association between minMR and upperMR that is shared among vertebrate taxonomic classes. However, there was stronger evidence for intra‐specific correlations between minMR and Msum and between minMR and DEE than there was for a correlation between minMR and VO 2max across different taxa. As expected, inter‐specific correlation estimates were consistently higher than intra‐specific estimates across all traits and vertebrate classes. An interesting exception to this general trend was observed in mammals, which contrast with birds and exhibit no correlation between minMR and Msum. We speculate that this is due to the evolution and recruitment of brown fat as a thermogenic tissue, which illustrates how some species and lineages might circumvent this seemingly general association. We conclude that, in spite of some variability across taxa and traits, the contention that minMR and upperMR are positively correlated generally holds true both within and across vertebrate species. Ecological and comparative studies should therefore take into consideration the possibility that variation in any one of these traits might partly reflect correlated responses to selection on other metabolic parameters. A lay summary is available for this article.
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影响因子：
2.8
作者：
Chappell, MA;Garland, T;Gomes, FR
通讯作者：
Gomes, FR
影响因子：
1.6
作者：
Gomes, FR;Chauí-Berlinck, JG;Navas, CA
通讯作者：
Navas, CA
DOI：
10.1111/1365-2656.12384
发表时间：
2015-09
期刊：
The Journal of animal ecology
影响因子：
--
作者：
Auer SK;Salin K;Rudolf AM;Anderson GJ;Metcalfe NB
通讯作者：
Metcalfe NB
影响因子：
2.4
作者：
Blackmer, AL;Mauck, RA;Williams, JB
通讯作者：
Williams, JB
影响因子：
4.8
作者：
Buckley, Lauren B.;Rodda, Gordon H.;Jetz, Walter
通讯作者：
Jetz, Walter