The energy savings-oxidative cost trade-off for migratory birds during endurance flight.
biochemistry
chemical biology
ecology
metabolic rate
metabolism
migratory birds
oxidative costs
Journal
eLife
ISSN: 2050-084X
Titre abrégé: Elife
Pays: England
ID NLM: 101579614
Informations de publication
Date de publication:
11 12 2020
11 12 2020
Historique:
received:
01
07
2020
accepted:
03
12
2020
entrez:
11
12
2020
pubmed:
12
12
2020
medline:
17
3
2021
Statut:
epublish
Résumé
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.
Identifiants
pubmed: 33306947
doi: 10.7554/eLife.60626
pii: 60626
pmc: PMC7733536
doi:
pii:
Substances chimiques
Fatty Acids, Omega-6
0
Types de publication
Comparative Study
Journal Article
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : National Science Foundation
ID : IBN-9983920
Pays : International
Organisme : U.S. Department of Agriculture
ID : RIAES-538748
Pays : International
Organisme : National Science Foundation
ID : UMO-2015/19/B/NZ8/01394
Pays : International
Organisme : National Science Foundation
ID : IOS-1354187
Pays : International
Informations de copyright
© 2020, McWilliams et al.
Déclaration de conflit d'intérêts
SM, BP, AW, LL, SE, JS, OF, KD, WG, LT, AB, MD, ES, UB No competing interests declared
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