Social and Environmental Factors Affecting Fecal Glucocorticoids in Wild, Female White-Faced Capuchins (Cebus capucinus)
Social and Environmental Factors Affecting Fecal Glucocorticoids in Wild, Female White-Faced Capuchins (Cebus capucinus)
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DOI：
10.1002/ajp.20954
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发表时间：
2011-09-01
影响因子：
2.4
通讯作者：
Ziegler, Toni E.
中科院分区：
文献类型：
--
作者：
Carnegie, Sarah D.;Fedigan, Linda M.;Ziegler, Toni E.
评估自由放养的非人灵长类动物的糖皮质激素水平提供了一种方法来确定个人的社会和环境压力负荷。我们调查了四个近似变量的影响，生殖状态，季节，雄性等级稳定性和优势地位的水平上的粪便糖皮质激素（皮质醇代谢产物）在哥斯达黎加的8只成年雌性白面卷尾猴。生殖状态，季节，男性排名的稳定性显着影响粪便糖皮质激素，而女性的优势排名没有。皮质醇水平显着高于怀孕的女性相比，哺乳期或其他生殖状态。皮质醇水平较高的女性在旱季与雨季相比，这表明代谢适应，以保持在干燥，炎热的条件下的稳态。虽然不熟悉的男性比熟悉的更大的杀雄激素的威胁，我们发现，女性经历了更高的糖皮质激素水平在男性等级不稳定的事件，无论阿尔法男性的角色是由一个熟悉的或不熟悉的男性接管。我们的研究结果提供了重要的基准和比较数据，为未来的研究变量，影响糖皮质激素水平在这个物种和其他哺乳动物。Am. J. Primatol. 73：861-869，2011. (C)2011 Wiley-Liss，Inc.
Assessing glucocorticoid levels in free-ranging nonhuman primates provides a means to determine the social and environmental stress load for individuals. We investigated the effect of four proximate variables reproductive state, season, male rank stability, and dominance rank on the level of fecal glucocorticoids (cortisol metabolites) in eight adult female white-faced capuchin monkeys in Costa Rica. Reproductive state, season, and male rank stability significantly affected fecal glucocorticoids while female dominance rank did not. Cortisol levels were significantly higher in pregnant females as compared with lactating or other reproductive states. Cortisol levels were higher among females during the dry season compared with the wet season, suggesting a metabolic adaptation to maintain homeostasis in drier, hotter conditions. Although unfamiliar males present a greater infanticidal threat than do familiar ones, we found that females experienced higher glucocorticoid levels during male rank instability events, regardless of whether the alpha male role was taken over by a familiar or an unfamiliar male. Our findings provide important benchmark and comparative data for future studies on the variables that affect glucocorticoid levels in this species and other mammals. Am. J. Primatol. 73:861-869, 2011. (C) 2011 Wiley-Liss, Inc.