夜猴（阿氏夜猴洪堡亚种）昼夜活动节律的夹带中的暗开关。

Dark switch in the entrainment of circadian activity rhythms in night monkeys. Aotus trivirgatus humboldt.

Erkert H G, Thiemann A

Comp Biochem Physiol A Comp Physiol. 1983;74(2):307-10. doi: 10.1016/0300-9629(83)90605-9.

Abstract

The locomotor activity of the night monkey (Aotus trivirgatus) has been shown to be related to light intensity by an optimum function; here entrainment by LD cycles is examined to see whether the mechanism of synchronization of circadian periodicity in Aotus is based on this function. 2. Eleven night monkeys of various ages, previously in either a free-running phase or in LD 12:12 (10(2):10(-1) lux), were recorded in LD 12:12 with the optimal intensity (10(-1) lux) in the light part of the cycle and a suboptimal intensity (10(-3) lux) in the dark part. 3. In all cases the monkeys synchronized in such a way that their activity phase fell in the dark part of the LD cycle. 4. The implication is that Aotus is a true dark-active species, that the illumination-dependent activity maximum at 10(-1) lux does not affect the synchronization mechanism, and that the differential (direction of change) rather than proportional (absolute level) actions of light provide the decisive cue for synchronization of the circadian activity rhythm.

摘要

夜猴（Aotus trivirgatus）的运动活动已被证明通过一种最优函数与光照强度相关；在此研究了其对昼夜节律周期的同步机制，以确定夜猴的昼夜节律同步机制是否基于此函数。2. 选取了11只不同年龄的夜猴，它们之前处于自由运行阶段或处于12小时光照：12小时黑暗（10²：10⁻¹勒克斯）环境中，将它们置于12小时光照：12小时黑暗环境中进行记录，光照部分的强度为最优强度（10⁻¹勒克斯），黑暗部分的强度为次优强度（10⁻³勒克斯）。3. 在所有情况下，猴子的同步方式都是使其活动期落在昼夜节律周期的黑暗部分。4. 这意味着夜猴是真正的夜行性活跃物种，10⁻¹勒克斯时依赖光照的活动最大值并不影响同步机制，并且光的差异（变化方向）而非比例（绝对水平）作用为昼夜活动节律的同步提供了决定性线索。