Change in photoperiodic cycle affects life span in a prosimian primate (Microcebus murinus)
Change in photoperiodic cycle affects life span in a prosimian primate (Microcebus murinus)
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DOI：
10.1177/074873049701200205
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发表时间：
1997-04-01
影响因子：
3.5
通讯作者：
Perret, M
中科院分区：
文献类型：
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作者：
Perret, M
小鼠狐猴，一种小型原猴纲灵长类动物，表现出严格受光周期变化控制的季节性节律。暴露于短于12小时的一天的结果完全性休息，增肥，嗜睡，减少行为活动;而暴露于一天的长度大于12小时诱导性活动，增加行为活动，和高激素水平。这项研究的目的是测试是否长期加速的季节性节奏可能会影响这种灵长类动物的生存和寿命。在圈养条件下，通过将动物暴露于由5个月的长光周期和3个月的短光周期组成的加速光周期方案，获得了季节性节律的加速。特定年龄的生存。将从出生起暴露于加速光周期条件下的动物（n = 89）的特定年龄存活率与保持在自然光周期下的动物（n = 68）的特定年龄存活率进行比较。与性别无关，平均生存期（45.5 ± 2.1个月）和最长生存期（79.3 ± 3.3个月）显著（p
The lesser mouse lemur, a small prosimian primate, exhibits seasonal rhythms strictly controlled by photoperiodic variations. Exposure to day lengths shorter than 12 h results in complete sexual rest, fattening, lethargy, and reduced behavioral activities; whereas exposure to day lengths greater than 12 h induces sexual activity, an increase in behavioral activities, and high hormonal levels. The objective of this study was to test whether long-term acceleration of seasonal rhythms may affect survival and longevity of this primate. In captivity, acceleration of seasonal rhythms was obtained by exposing the animals to an accelerated photoperiodic regimen consisting of 5 months of long photoperiod followed by 3 months of short photoperiod. The age-specific survival. rate in animals exposed from birth to accelerated photoperiodic conditions (n = 89) was compared to the age-specific survival rate of animals maintained under a natural photoperiod (n = 68). Independent of sexes, the mean life span (45.5 +/- 2.1 months) and maximal survival (79.3 +/- 3.3 months) were significantly (p