Nom du corpus

Corpus Systématique Animale

Titre du document

The position of the sun is a possible Zeitgeber for arctic animals

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_01600
Auteur(s)
  • Frans Krüll
Affiliation(s)
  • Institut für Zoologie der Universität Erlangen-Nürnberg, Lehrstuhl II, Bismarckstr. 10, D-8520, Erlangen, Federal Republic of Germany
Résumé

The synchronizing effect of the azimuth-position of the sun on the period of locomotor activity of animals in high arctic summer was studied. Different species of finches served as test animals. In a test room a bulb with reflector was turned around a cage once in 24 h. Just like the sun in high arctic summer over the skyline, this bulb stayed all the time at the same height over the floor. The light beam was casted downwards at a slant angle in the direction of the cage. With this “circling sun” it was mostly possible to synchronize locomotor activity of the finches with the rotation of the earth. At definite times of the year however several birds had a free running activity period, despite of the circling of the “sun”. It is likely that endogenous annual periodicity (oscillations of sex hormone level) is responsable for the changing effectiveness of this weak Zeitgeber.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - ecology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - sylviculture
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - ecology
Identifiant ISTEX
83874C617964D119FE0A5A48B686F623F9A781AD
Revue

Oecologia

Année de publication
1976
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
6.17
Sous-corpus
  • Oiseaux
Type de publication
Journal
ark:/67375/1BB-31K5NBL8-0
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