Limb bone scaling in hopping macropods and quadrupedal artiodactyls

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

  • Alessandro A. Felder
  • Melissa Y. Chua
  • Kalyani Lodhia
  • Michał M. Kłosowski
  • John R. Hutchinson
  • Sandra J. Shefelbine

Detail(s)

Original languageEnglish
Article number180152
Journal / PublicationRoyal Society Open Science
Volume5
Issue number10
Early online date24 Oct 2018
Publication statusPublished - Oct 2018

Link(s)

Abstract

Bone adaptation is modulated by the timing, direction, rate and magnitude of mechanical loads. To investigate whether frequent slow, or infrequent fast, gaits could dominate bone adaptation to load, we compared scaling of the limb bones from two mammalian herbivore clades that use radically different high-speed gaits, bipedal hopping (suborder Macropodiformes; kangaroos and kin) and quadrupedal galloping (order Artiodactyla; goats, deer and kin). Forelimb and hindlimb bones were collected from 20 artiodactyl and 15 macropod species (body mass M 1.05–1536 kg) and scanned in computed tomography or X-ray microtomography. Second moment of area (Imax) and bone length () were measured. Scaling relations (y = ax) were calculated for l versus M for each bone and for Imax versus M and Imax versus l for every 5% of length. Imax versus M scaling relationships were broadly similar between clades despite the macropod forelimb being nearly unloaded, and the hindlimb highly loaded, during bipedal hopping. Imax versus l and l versus M scaling were related to locomotor and behavioural specializations. Low-intensity loads may be sufficient to maintain bone mass across a wide range of species. Occasional high-intensity gaits might not break through the load sensitivity saturation engendered by frequent low-intensity gaits.

Research Area(s)

  • Anatomy, Artiodactyla, Bipedal hopping, Bone, Macropodiformes, Scaling

Bibliographic Note

Research Unit(s) information for this publication is provided by the author(s) concerned.

Citation Format(s)

Limb bone scaling in hopping macropods and quadrupedal artiodactyls. / Doube, Michael; Felder, Alessandro A.; Chua, Melissa Y.; Lodhia, Kalyani; Kłosowski, Michał M.; Hutchinson, John R.; Shefelbine, Sandra J.

In: Royal Society Open Science, Vol. 5, No. 10, 180152, 10.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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