The timing of semilunar as well as lunar reproductive rhythms has been analyzed in different geographic populations of the intertidal chironomid Clunio. In stocks of three populations differing in period and phase relationship with the lunar month, these long-term rhythms were synchronized in the laboratory by using artificial moonlight cycles of 30 days in otherwise 24-hr light-dark (LD) cycles (0.4 lux during 4 successive nights every 30 days in LD 12:12). In LD cycles of various periods, a strong synchronization was only possible in LD 12:12 and LD 11:11, whereas in LD 10:10 and LD 15:15 the synchronization by the 30-"day" moonlight cycle was weak or even absent.
References
1.
Aschoff, J. (1960) Exogenous and endogenous components in circadian rhythms. Cold Spring Harb. Symp. Quant. Biol.25: 11-28.
2.
Aschoff, J. (1978) Circadian rhythms within and outside their ranges of entrainment. In Environmental Endocrinology, J. Assenmacher and D. Farner , eds., pp. 172-181, Springer-Verlag, Berlin.
3.
Bünning, E. (1977) Die physiologische Uhr. Circadiane Rhythmik und Biochronometrie, Springer-Verlag, Berlin.
4.
Bünning, E., and D. Müller (1962) Wie messen Organismen lunare Zyklen? Z. Naturforsch. 16b: 391-395.
5.
Franke, H.-D. (1985) On a clocklike mechanism timing lunar-rhythmic reproduction in Typosyllis prolifera (Polychaeta). J. Comp. Physiol. A156: 553-561.
6.
Hauenschild, C. (1960) Lunar periodicity. Cold Spring Harb. Symp. Quant. Biol.25: 491-497.
7.
Hoffmann, K. (1969a) Zum Einfluß der Zeitgeberstärke auf die Phasenlage der synchronisierten circadianen Periodik. Z. Vergl. Physiologie62: 93-110.
8.
Hoffmann, K. (1969b) Die relative Wirksamkeit von Zeitgebern. Oecologia3: 184-206.
9.
Korringa, P. (1947) Relations between the moon and periodicity in the breeding of marine animals. Ecol. Monogr.17: 349-381.
10.
Neumann, D. (1966) Die lunare und tägliche Schlüpfperiodik der Mücke Clunio: Steuerung und Abstimmung auf die Gezeitenperiodik. Z. Vergl. Physiol. 53: 1-61.
11.
Neumann, D. (1976a) Entrainment of a semilunar rhythm. In Biological Rhythms in the Marine Environment, P. J. DeCoursey , ed., pp. 115-127, University of South Carolina Press, Columbia.
12.
Neumann, D. (1976b) Mechanismen für die zeitliche Anpassung von Verhältens-und Entwicklungsleistungen an den Gezeitenzyklus. Verh. Dtsch. Zool. Ges.1976: 9-28.
13.
Neumann, D. (1978). Entrainment of a semilunar rhythm by simulated tidal cycles of mechanical disturbances. J. Exp. Mar. Biol. Ecol.35: 73-85.
14.
Neumann, D. (1981) Tidal and lunar rhythms. In Handbook of Behavioral Neurobiology, Vol. 4, Biological Rhythms, J. Aschoff, ed., pp. 351-380, Plenum Press, New York.
15.
Neumann, D. (1985) Tidal and lunar rhythmic adaptations of reproductive activities in invertebrate species. In Comparative Physiology of Environmental Adaptations, Vol. 3, P. Pevet, ed., pp. 152-170, S. Karger, Basel.
16.
Neumann, D. (1986) Life cycle strategy of an intertidal midge between subtropic and arctic latitudes. In Proceedings in Life Sciences, The Evolution of Insect Life Cycles, F. Taylor and R. Karban, eds., pp. 3-19, Springer-Verlag , Berlin.
17.
Neumann, D. (1988) Temperature compensation of circasemilunar timing in the intertidal insect Clunio. J. Comp. Physiol.163: 671-676.
18.
Neumann, D., and F. Heimbach (1979) Time cues for semilunar reproduction rhythms in European populations of Clunio marinus: I. The influence of tidal cycles of mechanical disturbance. In Cyclic Phenomena in Marine Plants and Animals, E. Naylor and R. G. Hartnoll , eds., pp. 423-433, Pergamon Press, Oxford.
19.
Neumann, D., and F. Heimbach (1984) Time cues for semilunar reproduction rhythms in European populations of Clunio marinus: II. The influence of tidal temperature cycles. Biol. Bull.166: 509-524.
20.
Neumann, D., and F. Heimbach (1985) Circadian range of entrainment in the semilunar eclosion rhythm of the marine insect Clunio marinus. J. Insect Physiol.31: 549-557.
21.
Sachs, L. (1984) Angewandte Statistik, 6 Aufl., Springer-Verlag, Berlin.
22.
Saigusa, M. (1980) Entrainment of a semilunar rhythm by a simulated moonlight cycle in the terrestrial crab, Sesarma haematocheir. Oecologia46: 38-44.
23.
Vielhaben, V. (1963) Zur Deutung des semilunaren Fortpflanzungszyklus von Dictyota dichotoma. Z. Bot.51: 156-173.
