Oxidative status and metabolic profile in a long-lived bird preparing for extreme endurance migration

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dc.contributor.authorGutierrez, Jorge S.
dc.contributor.authorSabat, Pablo
dc.contributor.authorCastaneda, Luis E.
dc.contributor.authorContreras, Carolina
dc.contributor.authorNavarrete, Lucas
dc.contributor.authorPena-Villalobos, Isaac
dc.contributor.authorNavedo, Juan G.
dc.date.accessioned2025-01-23T21:09:32Z
dc.date.available2025-01-23T21:09:32Z
dc.date.issued2019
dc.description.abstractThe high metabolic activity associated with endurance flights and intense fuelling of migrant birds may produce large quantities of reactive oxygen species, which cause oxidative damage.Yet it remains unknown how long-lived birds prepare for oxidative challenges prior to extreme flights. We combined blood measurements of oxidative status and enzyme and fat metabolism in Hudsonian godwits (Limosa haemastica, a long-lived shorebird) before they embarked on non-stop flights longer than 10,000 km during their northbound migrations. We found that godwits increased total antioxidant capacity (TAC) and reduced oxidative damage (TBARS) as the pre-migratory season progressed, despite higher basal metabolic rates before departure. Elevations in plasma beta-hydroxybutyrate and uric acid suggest that lipid and protein breakdown supports energetic requirements prior to migration. Significant associations between blood mitochondrial cytochrome-c oxidase and plasma TAC (negative) and TBARS (positive) during winter indicate that greater enzyme activity can result in greater oxidative damage and antioxidant responses. However enzyme activity remained unchanged between winter and premigratory stages, so birds may be unable to adjust metabolic enzyme activity in anticipation of future demands. These results indicate that godwits enhance their oxidative status during migratory preparation, which might represent an adaptation to diminish the physiological costs of long-distance migration.
dc.fuente.origenWOS
dc.identifier.doi10.1038/s41598-019-54057-6
dc.identifier.issn2045-2322
dc.identifier.urihttps://doi.org/10.1038/s41598-019-54057-6
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100821
dc.identifier.wosidWOS:000498611300005
dc.language.isoen
dc.revistaScientific reports
dc.rightsacceso restringido
dc.subject.ods13 Climate Action
dc.subject.ods14 Life Below Water
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa14 Vida submarina
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleOxidative status and metabolic profile in a long-lived bird preparing for extreme endurance migration
dc.typeartículo
dc.volumen9
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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