Seasonal changes in general activity, body mass and reproduction of two small nocturnal primates: a comparison of the golden brown mouse lemur (Microcebus ravelobensis) in Northwestern Madagascar and the brown mouse lemur (Microcebus rufus) in Eastern Madagascar
Seasonal changes in general activity, body mass and reproduction of two small nocturnal primates: a comparison of the golden brown mouse lemur (Microcebus ravelobensis) in Northwestern Madagascar and the brown mouse lemur (Microcebus rufus) in Eastern Madagascar
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两种小型夜间灵长类动物一般活动、体重和繁殖的季节变化：马达加斯加西北部的金棕鼠狐猴（Microcebus ravelobensis）和马达加斯加东部的棕鼠狐猴（Microcebus rufus）的比较
DOI：
10.1007/s10329-003-0046-8
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发表时间：
2003
期刊：
影响因子：
1.7
通讯作者：
E. Zimmermann
中科院分区：
文献类型：
--
作者：
Blanchard Randrianambinina;D. Rakotondravony;U. Radespiel;E. Zimmermann
调查的第一次对比模式的季节性变化的环境和活动，体重和繁殖的小夜行性灵长类动物在自然界中的关系，我们比较了人口的金棕色鼠狐猴（Microcebus ravelobensis）在干燥的落叶林马达加斯加西北部和棕色鼠狐猴（Microcebus rufus）在东部马达加斯加的万年青雨林。这两个物种生活在相似的光周期条件下。金棕鼠狐猴（GBML）活跃在整个期间（5月至12月），无论不断变化的环境条件。与此相反，一部分棕色鼠狐猴（BML）的人口表现出长期的季节性麻痹，在短日照和低环境温度期间的体重。物种之间的差异可能是由于环境温度和食物供应的差异。体重和尾部厚度（脂肪组织储备）没有表现出显着的差异，短和长的光周期在GBML，而两者在BML显着不同，这表明种属特异性差异的光周期驱动的控制代谢。这两个物种都表现出季节性繁殖。睾丸的生长速度和大小是相似的，在这两个物种的发情期开始之前，这表明在男性的繁殖光周期控制。雌性动物的发情开始时间GBML早于BML。在前者中观察到发情雌性至少4个月，但在后者中仅观察到1个月。GBML发情起始的种内变异可能与体重有关。雌性生殖的种间变异表明种间在生殖控制上的差异。因此，与环境相关的差异，在密切相关的小型夜行狐猴之间的年度节奏出现，使他们能够科普其栖息地的季节性变化的对比模式。
To investigate for the first time the relationship between contrasting patterns of seasonal changes of the environment and activity, body mass and reproduction for small nocturnal primates in nature, we compared a population of golden brown mouse lemur (Microcebus ravelobensis) in a dry deciduous forest of northwestern Madagascar and of the brown mouse lemur (Microcebus rufus) in an evergreen rain forest of eastern Madagascar. Both species live under similar photoperiodic conditions. Golden brown mouse lemurs (GBML) were active during the whole period (May to December) irrespective of changing environmental conditions. In contrast, a part of the population of brown mouse lemurs (BML) showed prolonged seasonal torpor, related to body mass during periods of short day length and low ambient temperatures. Differences between species might be due to differences in ambient temperature and food supply. Body weight and tail thickness (adipose tissue reserve) did not show prominent differences between short and long photoperiods in GBML, whereas both differ significantly in BML, suggesting species-specific differences in the photoperiodically driven control of metabolism. Both species showed a seasonal reproduction. The rate of growth and size of the testes were similar and preceded estrous onset in both species suggesting a photoperiodic control of reproduction in males. The estrous onset in females occurred earlier in GBML than in BML. Estrous females were observed over at least 4 months in the former, but in only 1 month in the latter species. Intraspecific variation of estrous onset in GBML may be explained by body mass. Interspecific variation of female reproduction indicates species-specific differences in the control of reproduction. Thus, environmentally related differences in annual rhythms between closely related small nocturnal lemurs emerged that allow them to cope with contrasting patterns of seasonal changes in their habitats.
DOI：
10.1152/ajpregu.1996.270.5.r1013
发表时间：
1996-05
期刊：
The American journal of physiology
影响因子：
--
作者：
L. Kriegsfeld;R. Nelson
通讯作者：
L. Kriegsfeld;R. Nelson