Minis D H, Pittendrigh C S
Science. 1968 Feb 2;159(3814):534-6. doi: 10.1126/science.159.3814.534.
Populations of eggs of the moth Pectinophora gossypiella develop a circadian rhythm of hatching activity under certain circumstances. This rhythm derives from circadian oscillations in each egg, which can be initiated or made synchronous by steps or pulses of either light or temperature, but only if these signals are administered after the midpoint of embryogenesis. Correlations between the development of the oscillation, appearance of a pigment, sensitivity to photoperiodic induction, and a possible effect of light on growth rate are discussed.
棉红铃虫蛾的卵群在某些情况下会形成孵化活动的昼夜节律。这种节律源于每个卵中的昼夜振荡，光或温度的步长或脉冲可以启动这种振荡或使其同步，但前提是这些信号要在胚胎发育的中点之后施加。文中讨论了振荡的发展、色素的出现、对光周期诱导的敏感性以及光对生长速率可能产生的影响之间的相关性。
