Lampert Rosane M S, de Azevedo Carolina V M, Menezes Alexandre A L
Laboratório de Cronobiologia, Departamento de Fisiologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte, Natal, Brazil.
Folia Primatol (Basel). 2011;82(3):131-42. doi: 10.1159/000330914. Epub 2011 Oct 12.
The daily distribution of autogrooming was evaluated in adult marmosets submitted to different illumination intensities in the light phase of the light-dark cycle. Autogrooming and locomotor activity were monitored and the faecal cortisol level assessed as a stress indicator. The distribution of autogrooming showed two distinct tendencies: when the light intensity varied from 500 to 200 lux, a slight increase in frequency and duration was observed, while a significant decrease in both variables occurred at 10 lux. Varying light intensities did not inhibit rhythm synchronization. The daily profile of autogrooming was mainly unimodal with an acrophase in the first half of the light phase. Faecal cortisol levels tended to increase in animals submitted to 100 and 10 lux, but these results are not conclusive. We suggest keeping captive marmosets in light intensities of at least 200 lux in the light phase, allowing animals to maintain autogrooming levels in order to reduce the discomfort caused by captivity and isolation.
在明暗周期的光照阶段，对处于不同光照强度下的成年狨猴进行每日自我梳理行为分布的评估。监测自我梳理行为和运动活动，并评估粪便皮质醇水平作为应激指标。自我梳理行为的分布呈现出两种不同趋势：当光照强度从500勒克斯变化到200勒克斯时，观察到频率和持续时间略有增加，而在10勒克斯时，这两个变量均显著下降。不同的光照强度并未抑制节律同步。自我梳理行为的每日模式主要为单峰型，高峰期出现在光照阶段的上半叶。粪便皮质醇水平在处于100勒克斯和10勒克斯光照强度下的动物中趋于升高，但这些结果并不具有决定性。我们建议在光照阶段将圈养狨猴饲养在至少200勒克斯的光照强度下，以使动物能够维持自我梳理行为水平，从而减少圈养和隔离所带来的不适。
