Photoperiodic control of circadian activity rhythms in diurnal rodents
Photoperiodic control of circadian activity rhythms in diurnal rodents
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昼夜啮齿动物昼夜节律的光周期控制
DOI：
10.1007/bf02245543
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发表时间：
1980
影响因子：
3.2
通讯作者：
Deborah A. Kramm
中科院分区：
文献类型：
--
作者：
K. R. Kramm;Deborah A. Kramm
比较了红松鼠和东方花鼠对完全光暗和骨架光暗的反应。这些骨架由每天两次1小时的光脉冲组成，有效地模拟了松鼠的完整光周期，但没有模拟花栗鼠。骨骼光周期大于12小时造成的花栗鼠转移活动从较长的两个脉冲之间的时间间隔较短。为了解释相位控制的机制，松鼠和花栗鼠被保持在连续的黑暗中，每10天暴露于1小时的光脉冲。夹带的时间过程也被量化。两种技术都产生了光响应曲线。数据表明，参数和非参数的贡献夹带是不同的，在这两个啮齿动物物种。
The responses of red squirrels(Tamiasciurus hudsonicus)and eastern chipmunks(Tamias striatus)to complete and skeleton light-dark (LD) cycles were compared. The skeletons, comprised of two 1-h pulses of light per day, effectively simulated the complete photoperiods in the squirrels, but not the chipmunks. Skeleton photoperiods greater than 12-h caused the chipmunks to shift activity from the longer to the shorter of the two intervals between the pulses. To interpret the mechanism of phase control, squirrels and chipmunks were kept in continuous darkness and exposed to 1-h light pulses every 10 days. The time-course of entrainment was also quantified. Both techniques produced light-response curves. The data suggest that the parametric and non-parametric contributions to entrainment are different in these two rodent species.