Phylogenetic grouping, curvature and metabolic scaling in terrestrial invertebrates
Phylogenetic grouping, curvature and metabolic scaling in terrestrial invertebrates
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DOI：
10.1111/j.1461-0248.2011.01660.x
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发表时间：
2011-10-01
期刊：
影响因子：
8.8
通讯作者：
Brose, Ulrich
中科院分区：
文献类型：
--
作者：
Ehnes, Roswitha B.;Rall, Bjoern C.;Brose, Ulrich
世纪以来，动物代谢率与个体体重和环境温度的比例关系主要分别用幂律和指数关系来描述。许多理论已被提出来解释这些比例关系，但受到挑战的经验证明双对数尺度上的曲率。在本研究中，我们提出了一个新的数据集，包括3661陆生（主要是土壤）无脊椎动物的呼吸速率从192个独立的来源在很大范围内的身体质量，环境温度和系统发育组。虽然我们的分析记录了幂律和指数缩放与身体质量和温度，分别，多项式模型确定曲线偏差。有趣的是，考虑系统发育组的复杂缩放模型能够去除曲率，除了在最高温度（>30摄氏度）下的负曲率，表明代谢下调。这可能表明，无脊椎动物的身体结构，生态学和生理学的巨大差异可能会导致严重不同的代谢缩放过程。
For more than a century, the scaling of animal metabolic rates with individual body masses and environmental temperature has predominantly been described by power-law and exponential relationships respectively. Many theories have been proposed to explain these scaling relationships, but were challenged by empirically documented curvatures on double-logarithmic scales. In the present study, we present a novel data set comprising 3661 terrestrial (mainly soil) invertebrate respiration rates from 192 independent sources across a wide range in body masses, environmental temperatures and phylogenetic groups. Although our analyses documented power-law and exponential scaling with body masses and temperature, respectively, polynomial models identified curved deviations. Interestingly, complex scaling models accounting for phylogenetic groups were able to remove curvatures except for a negative curvature at the highest temperatures (>30 degrees C) indicating metabolic down regulation. This might indicate that the tremendous differences in invertebrate body architectures, ecology and physiology may cause severely different metabolic scaling processes.