キリギリスのふ化に対する光と温度の日周期の影響
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概要
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Hatching in Gampsoleis buergeri was synchronized neither in continuous darkness nor in continuous light at any temperature. However, it occurred synchronously at around sunrise under natural light conditions at about 24℃, and also at around lights-on in an artificial photoperiod of 12-hr light : 12-hr dark at temperatures between 15 and 25℃. The hatching in thermoperiods (12-hr warm phase : 12-hr cool phase) was concentrated at 8-10 hr after the temperature down in continuous darkness but spread over the entire cool phase in continuous light. Hatching was also synchronized by a single light-dark shift, a temperature down or a high temperature pulse in otherwise constant conditions. when eggs were transferred from cyclical to constant external conditions, the daily rhythm of hatching disappeared almost at once. It seems, therefore, that any circadian oscillator is not explicitly involved in the determination of hatching time. The direct response to a single stimulus of light or temperature was different between G.buergeri and Metrioptera hime, but in other respects their responses were similar, which suggest that they share the same basic system of time measurement.
- 日本生態学会の論文
- 1979-03-30
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