Nom du corpus

Corpus Systématique Animale

Titre du document

Different metabolic strategies of northern birds for nocturnal survival

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Oiseaux_v2b_01787
Auteur(s)
  • Randi Eidsmo Reinertsen 1
  • Svein Haftorn 2
Affiliation(s)
  • 1) Zoological Institute, University of Trondheim, Rosenborg, N-7000, Trondheim, Norway
  • 2) The Museum, University of Trondheim, Erling Skakkesgt. 47 A, N-7000, Trondheim, Norway
Résumé

1. The regulation of O2-consumption and body temperature, especially the occurrence and utilization of nocturnal hypothermia, was studied in three small-sized northern species of birds occupying different ecological niches. Being sympatric, the Willow titParus montanus, the Great titP. major and the Common redpollAcanthis flammea encounter the same environmental conditions during the winter-time, i.e. long nights, low ambient temperatures, a snow-cover, and the possibility of periods of food shortage. 2. When fed ad libitum, neither the Great tit nor the Common redpoll utilized nocturnal hypothermia. The Willow tit lowered the body temperature to a value which was significantly correlated with that of the ambient temperature. 3. During fasting experiments the evening body weights of the birds were depleted 10–20% below the normal value. In all three bird species the O2-consumption during the night was positively correlated to the body weight of the birds. Consequently, the depth of hypothermia achieved at thermal homeostasis was inversely correlated to body weight. 4. When energy reserves in terms of body weight, are less than normal, both Willow tit, Great tit and Common redpoll utilize nocturnal hypothermia in order to make the energy reserves last throughout the night. The reason why the latter two species, in contrast to the Willow tit, do not use nocturnal hypothermia under normal conditions, may be due to differences in body size and also feeding strategies.

Catégories Science-Metrix
  • 1 - health sciences
  • 2 - biomedical research
  • 3 - physiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - ethologie animale
Catégories Scopus
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Endocrinology
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Animal Science and Zoology
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Biochemistry
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Physiology
Catégories WoS
  • 1 - science ; 2 - zoology
  • 1 - science ; 2 - physiology
Identifiant ISTEX
640BC07BE58FC240632B6E75C0C4A1DB57AC7881
Revue

Journal of Comparative Physiology B

Année de publication
1986
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.712
Sous-corpus
  • Oiseaux
Type de publication
Journal
ark:/67375/1BB-6J0C9FC3-J
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