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Conversion efficien...
Conversion efficiency of flight power is low, but increases with flight speed in the migratory bat Pipistrellus nathusii
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- Currie, Shannon E. (författare)
- Leibniz Institute for Zoo and Wildlife Research
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- Johansson, L. Christoffer (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Flyglabbet,Forskargrupper vid Lunds universitet,Evolutionary ecology,Department of Biology,Faculty of Science,Animal Flight Lab,Lund University Research Groups
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- Aumont, Cedric (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Evolutionary ecology,Department of Biology,Faculty of Science,L'Institut Agro Rennes-Angers
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- Voigt, Christian C. (författare)
- Leibniz Institute for Zoo and Wildlife Research
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- Hedenström, Anders (författare)
- Lund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Flyglabbet,Forskargrupper vid Lunds universitet,CAnMove - Centrum för forskning om djurs spridning och flyttning,Evolutionary ecology,Department of Biology,Faculty of Science,Animal Flight Lab,Lund University Research Groups,CAnMove - Centre for Animal Movement Research
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(creator_code:org_t)
- 2023
- 2023
- Engelska 11 s.
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Ingår i: Proceedings of the Royal Society B: Biological Sciences. - 0962-8452. ; 290:1998
- Relaterad länk:
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http://dx.doi.org/10... (free)
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The efficiency with which flying animals convert metabolic power to mechanical power dictates an individual's flight behaviour and energy requirements. Despite the significance of this parameter, we lack empirical data on conversion efficiency for most species as in vivo measurements are notoriously difficult to obtain. Furthermore, conversion efficiency is often assumed to be constant across flight speeds, even though the components driving flight power are speed-dependent. We show, through direct measurements of metabolic and aerodynamic power, that conversion efficiency in the migratory bat (Pipistrellus nathusii) increases from 7.0 to 10.4% with flight speed. Our findings suggest that peak conversion efficiency in this species occurs near maximum range speed, where the cost of transport is minimized. A meta-analysis of 16 bird and 8 bat species revealed a positive scaling relationship between estimated conversion efficiency and body mass, with no discernible differences between bats and birds. This has profound consequences for modelling flight behaviour as estimates assuming 23% efficiency underestimate metabolic costs for P. nathusii by almost 50% on average (36-62%). Our findings suggest that conversion efficiency may vary around an ecologically relevant optimum speed and provide a crucial baseline for investigating whether this drives variation in conversion efficiency between species.
Ämnesord
- NATURVETENSKAP -- Biologi -- Zoologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Zoology (hsv//eng)
Nyckelord
- 13 C-labelled sodium bicarbonate
- energy efficiency
- mechanical power output
- metabolic power input
- particle image velocimetry
- wind tunnel
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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