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2013年50 No.1
Effects of temperature and photoperiod on the eclosion rhythm of Ostrinia furnacalis
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Key Words：eclosion rhythm, photoperiod, temperature, Ostrinia furnacalis
Abstract：The effects of temperature and photoperiod on the eclosion rhythm of Ostrinia furnacalis (Guenée) were studied under
laboratory conditions. All of the eclosion peaks were found to appear in the scotophase, for night lengths from 8 h to 16 h.
The eclosion patterns were found to be in rhythm with the lightdark cycle, the rhythmicity being affected by the length of
scotophase and by temperature. The eclosion peak was earlier with a shorter scotophase, and later with a longer scotophase
and the peaks were later at a temperature of 22℃ than at 25℃. Freerun eclosion rhythms were found to be about 24 h at
both 22℃ and 25℃ and only appeared in constant darkness.