Journal für Ornithologie

, Volume 144, Issue 1, pp 81–85 | Cite as

Zur Entwicklung der Tagesrhythmik bei Schleiereulen (Tyto alba)

  • Beatrix Wuntke
Article

Zusammenfassung

Die Herausbildung der arttypischen Aktivitätsrhythmik während der Ontogenese ist ein wichtiger Entwicklungsschritt in der Interaktion zwischen dem Jungtier und seiner Umwelt.

Videoaufnahmen von Schleiereulennestlingen wurden hinsichtlich der Veränderungen in der Tagesrhythmik der Jungeulen ausgewertet. Die ontogenetischen Veränderungen entsprachen dem in der Literatur für verschiedene Vogel- und Säugerarten beschriebenen Bild. Nach einem anfänglichen polymodalen Tagesrhythmus nimmt die Ausprägung der 24h-Rhythmik zu und mit dem Ausfliegen entspricht das Tagesmuster der Aktivität der Jungeulen dem der adulten Tiere.

The development of daily rhythmicity in Barn Owls (Tyto alba)

Summary

The development of biorhythms is an important aspect of the dynamic interaction between the young animal and its environment. The study of such phenomena gives an insight into general evolutionary characteristics of development as well as into species-specific features. Biorhythms depend on a maturated intact central nervous system which works as a pacemaker and on fully developed sensory organs which give the synchronising input for the neuronal rhythm generator. While there is extensive knowledge of adult biorhythms, information on the ontogeny of such rhythms is limited. Video records of Barn Owl nestlings were analysed with regard to their development of rest/activity rhythms. Barn Owls are altricial birds; at birth they are nearly immobile, their eyes are closed and they are unable to feed by themselves. The analysis was made on nestlings of different age classes. At the age of 20 days the share of the 24h-period taken up by the locomotory activity of the nestlings was 11–13 %. A lot of ultradian rhythms were detected. They caused the typical polymodal pattern of the daily activity. In 30 day old nestlings the share of the 24h-span was 16–18 % and at the age of 45 days it was 20–22 %. This increase within the 24h-period is typical of the ontogeny of locomotory activity and is described in literature in mammals as well as in birds (Lumineau et al. 2001, Cousse et al., 1995).

Keywords

Barn Owl Tyto alba activity rhythm ontogeny daily rhythmicity 

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Literatur

  1. Cousse, S., Quenette, P.Y., Janeau, G., Lauga, J., Cargnelutti, B. & Mann, C.S. (1995): Ontogeny of rest-activity rhythm in the Wild boar. Z. Säugetierkunde 60: 143–149.Google Scholar
  2. Epple, W. (1993): Schleiereulen. Karlsruhe.Google Scholar
  3. Erkert, H.G. (1969): Die Bedeutung des Lichtsinnes für die Aktivität und Raumorientierung der Schleiereule (Tyto alba guttata Brehm). Z. vergl. Physiol. 64: 37–70.CrossRefGoogle Scholar
  4. Festetics, A. (1968): Zweiphasenaktivitätbei der Schleiereule (Tyto alba). Z. Tierpsychol. 25 (6): 659–665.PubMedGoogle Scholar
  5. Heinroth, O. & Heinroth, M. (1924): Die Vögel Mitteleuropas, Bd. 2. Berlin.Google Scholar
  6. Lumineau, S., Guyomarc, C. & Richard, J.P. (2001): Ultradian rhythm of activity in Japanese Quail groups under semi-natural conditions during ontogeny: functional aspects and relation to circadian rhythm. Biol. Rhythm Res. 32 (2): 373–388.CrossRefGoogle Scholar
  7. Ma, G., Segawa, M., Nomura, Y., Kondo, Y., Yanagitani, M. & Higurashi, M. (1993): The Development of Sleep-Wakefulness Rhythm in Normal Infants and Young Children. Tohoku J. Exp. Med. 171: 29–41.PubMedCrossRefGoogle Scholar
  8. Mirmiran, M. & Kok, J.H. (1991): Circadian rhythms in early human development. Early hum. Dev. 26: 121–128.PubMedCrossRefGoogle Scholar
  9. Platz, M. (1996): Untersuchungen zur Brutbiologie eines Schleiereulenpaares (Tyto alba) unter besonderer Berücksichtigung des Nahrungserwerbs in der Agrarlandschaft. Diplomarbeit Freie Univ./Humboldt-Univ., Berlin.Google Scholar
  10. Scheibe, K.M., Berger, A., Langbein, J., Streich, W.J. & Eichhorn, J. (1999): Comparative analysis of ultradian and circadian behavioural rhythms for diagnosis of biorhythmic state of animals. Biol. Rhythm Res. 30 (2): 216–233.CrossRefGoogle Scholar
  11. Schneider, W. (1995): Schleiereulen - Tytonidae. Spektrum, Akademie-Verlag Heidelberg.Google Scholar
  12. Schönfeld, M. & Girbig, G. (1975): Beiträge zur Brutbiologie der Schleiereule,Tyto alba, unter besonderer Berücksichtigung der Abhängigkeit von der Feldmausdichte. Herc. 12: 257–319.Google Scholar
  13. Taylor, I.R. (1994): The Barn Owl. Cambridge University Press.Google Scholar
  14. Thomas, K.A. (1995): Biorhythms in infants and role of the care environment. J. Perinatal Nurs. 9 (2): 61–75.Google Scholar
  15. Watzke, H. & Mensch, B. (1998): Die Agrarlandschaft - Lebensraum für Kleinsäuger. Artenschutzreport 8: 35–40.Google Scholar

Copyright information

© Deutsche Ornithologen-Gesellschaft/Blackwell Verlag 2003

Authors and Affiliations

  • Beatrix Wuntke
    • 1
  1. 1.Schenkenberg

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