Summary
In constant illumination fish groups and isolated fish exhibit a free running rhythm. The period length of the day active animals decreases with increasing light intensity and vice versa. The results correspond to the circadian rule, the validity of which has proved correct now for fish, too. The synchronization within fish groups is also influenced by socio-ecological factors.
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References
J. Aschoff, Z. Tierpsychol.15, 1 (1958).
J. Aschoff,Circadian Clocks (North-Holland Publ. Co., Amsterdam 1965).
R. Wever, Z. Tierpsychol.51, 1 (1964).
J. Aschoff, A. Rev. Physiol.25, 581 (1963).
H. Remmert,Handbuch der Biologie Akademische Verlagsgesell. Athenaion, Frankfurt a. M. (1965), vol. 5, p. 1.
K. Hoffmann, Z. vergl. Physiol.43, 544 (1960).
J. Medogorag undM. Lindauer, Z. vergl. Physiol.55, 450 (1967).
F. Weber, Zool. Jb. Physiol.72, 136 (1966).
R. Siegmund, Biol. Zentbl.88, 295 (1969).
R. Siegmund undD. L. Wolff, forma et functio5, 33 (1972).
Zu freilaufenden Rhythmen bei Fischen unter natürlichen Lichtverhältnissen vgl.K. Müller, Naturwissenschaften55, 140 (1968) undK. Müller, Oikos20, 166 (1969).
R. Siegmund undD. L. Wolff, forma et functio, im Druck.
Herrn Prof. Dr.G. Tembrock danken wir für anregende Diskussion.
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Siegmund, R., Wolff, D.L. Circadian-Rhythmik und Gruppenverhalten beiLeucaspius delineatus (Pisces, Cyprinidae). Experientia 29, 54–58 (1973). https://doi.org/10.1007/BF01913249
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DOI: https://doi.org/10.1007/BF01913249