Jeppesen L L
Zoological Laboratory, Universitetsparken 15, DK-2100 Copenhagen Ø, Denmark.
Behav Processes. 1977 Dec;2(4):373-82. doi: 10.1016/0376-6357(77)90007-9.
Different groups of Helix pomatia were exposed to short light pulses (1 or 2 hours) during a long dark period (16 or 14 hours) of a 24-hour cycle of light and dark. The effect of the light pulses on the hibernation of the snails was shown to depend on the circadian time the pulses were introduced. Some of these light pulses reduced the hibernation. In other experiments groups of snails were exposed to 12-hour cycles or 24-hour cycles of equal periods of light and dark. Hibernation was reduced by the former as compared to the latter. These results show that Helix pomatia exhibits photoperiodic control of hibernation by a discontinuous or cyclic mechanism of time measurement.
将不同组的苹果蜗牛在24小时明暗周期的长黑暗期（16或14小时）内暴露于短光脉冲（1或2小时）。结果表明，光脉冲对蜗牛冬眠的影响取决于引入脉冲的昼夜节律时间。其中一些光脉冲减少了冬眠。在其他实验中，将蜗牛组暴露于等时长的12小时周期或24小时周期的明暗交替中。与后者相比，前者使冬眠减少。这些结果表明，苹果蜗牛通过不连续或循环的时间测量机制表现出对冬眠的光周期控制。
