Relationships between bone growth rate, body mass and resting metabolic rate in growing amniotes: a phylogenetic approach
Relationships between bone growth rate, body mass and resting metabolic rate in growing amniotes: a phylogenetic approach
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DOI：
10.1111/j.1095-8312.2007.00881.x
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发表时间：
2007-09-01
影响因子：
1.9
通讯作者：
Cubo, Jorge
中科院分区：
文献类型：
--
作者：
Montes, Laetitia;Le Roy, Nathalie;Cubo, Jorge
我们探索的因素，解释在静止代谢率（RMR）的变化，在不断增长的蝾螈通过使用系统发育比较方法。为此，我们测量了原始RMR（mL O-2 h（-1）），体重，体重增长率和骨膜骨生长率的样本中的44个成长中的个人属于13个物种。我们进行了变异划分分析，结果表明，生长发育解释了质量特异性RMR（mL O-2 h（-1）g（-1））变异的一个重要部分，并且生长成本远高于维持成本。此外，我们还检验了能量分配独立性的假设，发现维持代谢和生长率之间没有显著相关。最后，我们计算了几何校正的RMR（mL O-2 h（-1）g（-0.67））与骨生长速率之间关系的统计参数。这种关系可能被用于古生物学推断RMR化石物种的骨组织样本假设Amprino的规则（根据骨组织类型反映骨生长速率）。这些估计将是特别有趣的中生代非鸟类兽脚类恐龙和二叠纪和三叠纪兽脚类动物，分别调查鸟类和哺乳动物的起源内温性。(C)2007年，伦敦林奈学会。
We explored the factors that explain the variation in resting metabolic rates (RMR) in growing amniotes by using the phylogenetic comparative method. For this, we measured raw RMR (mL O-2 h(-1)), body mass, body mass growth rate, and periosteal bone growth rate in a sample of 44 growing individuals belonging to 13 species of amniotes. We performed variation partitioning analyses, which showed that phylogeny explains a significant fraction of the variation of mass-specific RMR (mL O-2 h(-1) g(-1)), and that the cost of growth is much higher than the cost of maintenance. Moreover, we tested the hypothesis of the independence of energy allocation, and found that maintenance metabolism and growth rates are not significantly related. Finally, we calculated the statistical parameters of the relationship between geometry-corrected RMR (mL O-2 h(-1) g(-0.67)) and bone growth rate. This relationship could potentially be used in palaeobiology to infer RMR from bone tissue samples of fossil species by assuming Amprino's rule (according to which bone tissue types reflect bone growth rates). These estimates would be especially interesting for Mesozoic non-avian theropod dinosaurs and Permian and Triassic therapsids to investigate, respectively, the origin of avian and mammalian endothermy. (C) 2007 The Linnean Society of London.