Increasing Winter Maximal Metabolic Rate Improves Intrawinter Survival in Small Birds

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dc.contributor.authorPetit, Magali
dc.contributor.authorClavijo Baquet, Sabrina
dc.contributor.authorVezina, Francois
dc.date.accessioned2024-01-10T13:49:24Z
dc.date.available2024-01-10T13:49:24Z
dc.date.issued2017
dc.description.abstractSmall resident bird species living at northern latitudes increase their metabolism in winter, and this is widely assumed to improve their chances of survival. However, the relationship between winter metabolic performance and survival has yet to be demonstrated. Using capture-mark-recapture, we followed a population of free-living black-capped chickadees (Poecile atricapillus) over 3 yr and evaluated their survival probability within and among winters. We also measured the size-independent body mass (M-s), hematocrit (Hct), basal metabolic rate (BMR), and maximal thermogenic capacity (Msum) and investigated how these parameters influenced survival within and among winters. Results showed that survival probability was high and constant both within (0.92) and among (0.96) winters. They also showed that while M-s, Hct, and BMR had no significant influence, survival was positively related to Msumfollowing a sigmoid relationshipwithin but not among winter. Birds expressing an Msum below 1.26 W (i.e., similar to summer levels) had a <50% chance of survival, while birds with an Msum above 1.35 W had at least a 90% chance of surviving through the winter. Our data therefore suggest that black-capped chickadees that are either too slow or unable to adjust their phenotype from summer to winter have little chances of survival and thus that seasonal upregulation of metabolic performance is highly beneficial. This study is the first to document in an avian system the relationship between thermogenic capacity and winter survival, a proxy of fitness.
dc.description.funderNatural Sciences and Engineering Research Council of Canada Discovery grant
dc.description.funderFonds Quebecois de la Recherche sur la Nature et les Technologies Nouveaux Chercheurs grant
dc.fechaingreso.objetodigital2024-04-26
dc.format.extent12 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1086/689274
dc.identifier.eissn1537-5293
dc.identifier.issn1522-2152
dc.identifier.pubmedidMEDLINE:28277959
dc.identifier.urihttps://doi.org/10.1086/689274
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/79448
dc.identifier.wosidWOS:000395771000004
dc.information.autorucCiencias Biológicas;Clavijo-Baquet S;S/I;181645
dc.issue.numero2
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final177
dc.pagina.inicio166
dc.publisherUNIV CHICAGO PRESS
dc.revistaPHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY
dc.rightsacceso restringido
dc.subjectmetabolic rate
dc.subjectBMR
dc.subjectMsum
dc.subjectsurvival
dc.subjectwinter acclimatization
dc.subjectfitness
dc.subjectblack-capped chickadee
dc.subjectBLACK-CAPPED CHICKADEE
dc.subjectTHERMOGENIC CAPACITY
dc.subjectSEASONAL ACCLIMATIZATION
dc.subjectPHENOTYPIC FLEXIBILITY
dc.subjectBODY-COMPOSITION
dc.subjectINDIVIDUAL VARIATION
dc.subjectMOUNTAIN CHICKADEES
dc.subjectOXYGEN-CONSUMPTION
dc.subjectENERGY-METABOLISM
dc.subjectHIGH-ALTITUDE
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleIncreasing Winter Maximal Metabolic Rate Improves Intrawinter Survival in Small Birds
dc.typeartículo
dc.volumen90
sipa.codpersvinculados181645
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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