Great tits (Parus major) in a west European temperate forest show little seasonal variation in metabolic energy requirements.
Energy expenditure
Great tit
Metabolic rates
Journal
Journal of thermal biology
ISSN: 0306-4565
Titre abrégé: J Therm Biol
Pays: England
ID NLM: 7600115
Informations de publication
Date de publication:
Dec 2023
Dec 2023
Historique:
received:
04
04
2023
revised:
21
10
2023
accepted:
23
10
2023
medline:
5
12
2023
pubmed:
21
11
2023
entrez:
20
11
2023
Statut:
ppublish
Résumé
Understanding how birds annually allocate energy to cope with changing environmental conditions and physiological states is a crucial question in avian ecology. There are several hypotheses to explain species' energy allocation. One prominent hypothesis suggests higher energy expenditure in winter due to increased thermoregulatory costs. The "reallocation" hypothesis suggests no net difference in seasonal energy requirements, while the "increased demand" hypothesis predicts higher energy requirements during the breeding season. Birds are expected to adjust their mass and/or metabolic intensity in ways that are consistent with their energy requirements. Here, we look for metabolic signatures of seasonal variation in energy requirements of a resident passerine of a temperate-zone (great tit, Parus major). To do so, we measured whole-body and mass-independent basal (BMR), summit (M
Identifiants
pubmed: 37984051
pii: S0306-4565(23)00289-9
doi: 10.1016/j.jtherbio.2023.103748
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
103748Informations de copyright
Copyright © 2023 Elsevier Ltd. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest There were no conflicts of interest.