Evidence for ecological adaptation of circadian systems
- 31 December 1977
- journal article
- research article
- Published by Springer Nature in Oecologia
- Vol. 32 (1), 71-78
- https://doi.org/10.1007/bf00344690
Abstract
Comparative studies on the circadian activity rhythm of five neotropical bat species show, that even exclusively tropical Chiroptera yield considerable differences with respect to their light-induced variation of the period length and the time needed for re-entrainment after phase shifts of the Zeitgeber-LD (Figs. 2 and 3). Species with a wide variation range of the period length resynchronize very fast and vice versa. Both reactions suggest the circadian system to have a higher plasticity or a higher sensibility for the exogenous components respectively. The sensibility for these exogenous components is, according to the hitherto results, in general higher within insectivorous Chiroptera species than within frugivorous/nectarivorous to omnivorous species. It is discussed, whether this can be interpreted as a specific adaptation to the demands of a predatory way of life.Keywords
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