Arrhythmically singing crickets: thermoperiodic reentrainment after bilobectomy

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Science  24 Oct 1975:
Vol. 190, Issue 4212, pp. 385-387
DOI: 10.1126/science.1179217


The circadian control of the calling song of crickets is abolished by severance of the optic lobes. The arrhythmic singing activity of operated animals is unaffected by all possible light conditions, yet the singing can be reentained by a daily temperature cycle. The characteristics of this reentrainment indicate the that temperature is acting as an actual Zeitgeber. In light of these results the current hypothesis which ascribes a driving oscillator function to the optic lobes must be reevaluated.