eLife | |
The energy savings-oxidative cost trade-off for migratory birds during endurance flight | |
Olivia Fatica1  Kristen DeMoranville2  Barbara Pierce2  Lillie Langlois3  Wolfgang Goymann3  Scott McWilliams3  Edyta Sadowska4  Maciej Dzialo4  Ulf Bauchinger4  John R Speakman5  Lisa Trost6  Andrea Wittenzellner6  Amadeusz Bryla6  Sophia Engel6  | |
[1] Institute of Biological and Environmental Sciences, University of Aberdeen, Scotland, United Kingdom;Department of Biology, Sacred Heart University, Fairfield, United States;Department of Natural Resources Science, University of Rhode Island, Kingston, United States;Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland;Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China;Max Planck Institute for Ornithology, Starnberg, Germany; | |
关键词: metabolic rate; oxidative costs; ecology; metabolism; migratory birds; | |
DOI : 10.7554/eLife.60626 | |
来源: DOAJ |
【 摘 要 】
Elite human and animal athletes must acquire the fuels necessary for extreme feats, but also contend with the oxidative damage associated with peak metabolic performance. Here, we show that a migratory bird with fuel stores composed of more omega-6 polyunsaturated fats (PUFA) expended 11% less energy during long-duration (6 hr) flights with no change in oxidative costs; however, this short-term energy savings came at the long-term cost of higher oxidative damage in the omega-6 PUFA-fed birds. Given that fatty acids are primary fuels, key signaling molecules, the building blocks of cell membranes, and that oxidative damage has long-term consequences for health and ageing, the energy savings-oxidative cost trade-off demonstrated here may be fundamentally important for a wide diversity of organisms on earth.
【 授权许可】
Unknown