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A general scaling law reveals why the largest animals are not the fastest - PubMed

  • ️Wed Jun 13 0660

. 2017 Aug;1(8):1116-1122.

doi: 10.1038/s41559-017-0241-4. Epub 2017 Jul 17.

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A general scaling law reveals why the largest animals are not the fastest

Myriam R Hirt et al. Nat Ecol Evol. 2017 Aug.

Abstract

Speed is the fundamental constraint on animal movement, yet there is no general consensus on the determinants of maximum speed itself. Here, we provide a general scaling model of maximum speed with body mass, which holds across locomotion modes, ecosystem types and taxonomic groups. In contrast to traditional power-law scaling, we predict a hump-shaped relationship resulting from a finite acceleration time for animals, which explains why the largest animals are not the fastest. This model is strongly supported by extensive empirical data (474 species, with body masses ranging from 30 μg to 100 tonnes) from terrestrial as well as aquatic ecosystems. Our approach unravels a fundamental constraint on the upper limit of animal movement, thus enabling a better understanding of realized movement patterns in nature and their multifold ecological consequences.

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  • Sticking to the speed limits.

    Clemente CJ, Bishop PJ. Clemente CJ, et al. Nat Ecol Evol. 2017 Aug;1(8):1058-1059. doi: 10.1038/s41559-017-0264-x. Nat Ecol Evol. 2017. PMID: 29046581 No abstract available.

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