Versuche über den Zeitmeßvorgang bei der photoperiodischen Diapause-Induktion von Pieris brassicae

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Abstract
No significant influence of temperature on the timing process in photoperiodic diapause induction of Pieris brassicae was detectable by 3 different methods. Between 15[degree] and 21[degree] C the physiological status in which light strongly inhibits diapause is always reached about 14-16 hours after the beginning of the daily light period. The diurnal changes in responsiveness to light correspond to diurnal changes in the volume of the corpora allata.