Jilge B
Chronobiologia. 1979 Jan-Mar;6(1):33-8.
By means of automatic registration of hard faeces excretion the caecotrophy-rhythm of 10 rabbits was monitored. In the animals a negative phase angle difference existed between 'lights on' and the start of caecotrophy in LD 12:12. Five rabbits practised caecotrophy once and 5 rabbits twice/24 h. Following 6-h phase-shifts of the LD-regimen the caecotrophy-rhythm was shifted in the same direction as the Zeitgeber. The time of re-entrainment for advance shifts of caecotrophy is significantly longer than for delay shifts. The inversion of the Zeitgeber causes caecotrophy to be delay-shifted in all animals.
通过自动记录硬粪排泄情况，监测了10只兔子的盲肠食粪节律。在LD 12:12光照周期下，动物的“开灯”时间与盲肠食粪开始之间存在负相位角差。5只兔子每天进行一次盲肠食粪，5只兔子每天进行两次盲肠食粪。在LD光照周期进行6小时的相位移动后，盲肠食粪节律与授时因子朝相同方向移动。盲肠食粪提前移动的重新同步时间显著长于延迟移动的重新同步时间。授时因子反转导致所有动物的盲肠食粪出现延迟移动。
