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Article Dans Une Revue Journal of the Royal Society Interface Année : 2022

The role of wingbeat frequency and amplitude in flight power

Krishnamoorthy Krishnan
Baptiste Garde
Ashley Bennison
  • Fonction : Auteur
Nik Cole
  • Fonction : Auteur
Emma-L. Cole
  • Fonction : Auteur
Jamie Darby
Kyle Elliott
Adam Fell
  • Fonction : Auteur
Agustina Gómez-Laich
  • Fonction : Auteur
Mark Jessopp
Emmanouil Lempidakis
  • Fonction : Auteur
Yuichi Mizutani
Michael Quetting
  • Fonction : Auteur
Flavio Quintana
Hermina Robotka
Alexandre Roulin
Peter Ryan
  • Fonction : Auteur
Kim Schalcher
  • Fonction : Auteur
Stefan Schoombie
  • Fonction : Auteur
Vikash Tatayah
  • Fonction : Auteur
Fred Tremblay
  • Fonction : Auteur
Shannon Whelan
Martin Wikelski
  • Fonction : Auteur
Ken Yoda
  • Fonction : Auteur
Anders Hedenström
Emily Shepard
  • Fonction : Auteur

Résumé

Body-mounted accelerometers provide a new prospect for estimating power use in flying birds, as the signal varies with the two major kinematic determinants of aerodynamic power: wingbeat frequency and amplitude. Yet wingbeat frequency is sometimes used as a proxy for power output in isolation. There is, therefore, a need to understand which kinematic parameter birds vary and whether this is predicted by flight mode (e.g. accelerating, ascending/descending flight), speed or morphology. We investigate this using high-frequency acceleration data from (i) 14 species flying in the wild, (ii) two species flying in controlled conditions in a wind tunnel and (iii) a review of experimental and field studies. While wingbeat frequency and amplitude were positively correlated, R 2 values were generally low, supporting the idea that parameters can vary independently. Indeed, birds were more likely to modulate wingbeat amplitude for more energy-demanding flight modes, including climbing and take-off. Nonetheless, the striking variability, even within species and flight types, highlights the complexity of describing the kinematic relationships, which appear sensitive to both the biological and physical context. Notwithstanding this, acceleration metrics that incorporate both kinematic parameters should be more robust proxies for power than wingbeat frequency alone.

Dates et versions

hal-03774906 , version 1 (12-09-2022)

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Citer

Krishnamoorthy Krishnan, Baptiste Garde, Ashley Bennison, Nik Cole, Emma-L. Cole, et al.. The role of wingbeat frequency and amplitude in flight power. Journal of the Royal Society Interface, 2022, 19 (193), pp.20220168. ⟨10.1098/rsif.2022.0168⟩. ⟨hal-03774906⟩
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