Higher dominance rank is associated with lower glucocorticoids in wild female baboons: A rank metric comparison.
Higher dominance rank is associated with lower glucocorticoids in wild female baboons: A rank metric comparison.
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DOI：
10.1016/j.yhbeh.2020.104826
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发表时间：
2020-09
影响因子：
3.5
通讯作者：
Alberts SC
中科院分区：
文献类型：
--
作者：
Levy EJ;Gesquiere LR;McLean E;Franz M;Warutere JK;Sayialel SN;Mututua RS;Wango TL;Oudu VK;Altmann J;Archie EA;Alberts SC
在脊椎动物中，糖皮质激素分泌是对能量和心理社会应激的反应，这些应激触发了下丘脑-垂体-肾上腺（HPA）轴。因此，测量糖皮质激素浓度可以揭示与不同社会和环境变量相关的压力源，包括优势等级。使用14,172粪便样本从237野生雌性狒狒，我们测试的假设，高排名的女性经历较少的心理和/或精力充沛的压力比低排名的女性。我们预测，高排名的女性将有较低的粪便糖皮质激素（fGC）浓度比低排名的女性。由于优势等级可以以多种方式测量，我们采用信息论方法比较5种不同的等级测量作为fGC浓度的预测因子：顺序等级;比例等级; Elo等级;和两种分类等级方法（α与非α和高-中-低）。我们的假设得到了支持，但也过于简单化了。我们发现，阿尔法女性表现出明显低于其他女性的fGC（典型减少= 8.2%）。如果我们在模型中使用比例等级而不是α与非α状态，我们观察到等级的弱效应，使得fGC从等级中最高到最低的女性上升4.2%。模型使用顺序排名，Elo评级，或高-中-低类别单独未能解释女性fGC的变化。我们的研究结果揭示了新的优势等级和压力反应之间的关联，女性狒狒的竞争格局相比，男性，和固有的假设在一个研究人员的排名度量的选择。
In vertebrates, glucocorticoid secretion occurs in response to energetic and psychosocial stressors that trigger the hypothalamic-pituitary-adrenal (HPA) axis. Measuring glucocorticoid concentrations can therefore shed light on the stressors associated with different social and environmental variables, including dominance rank. Using 14,172 fecal samples from 237 wild female baboons, we test the hypothesis that high-ranking females experience fewer psychosocial and/or energetic stressors than lower-ranking females. We predicted that high-ranking females would have lower fecal glucocorticoid (fGC) concentrations than low-ranking females. Because dominance rank can be measured in multiple ways, we employ an information theoretic approach to compare 5 different measures of rank as predictors of fGC concentrations: ordinal rank; proportional rank; Elo rating; and two approaches to categorical ranking (alpha vs non-alpha and high-middle-low). Our hypothesis was supported, but it was also too simplistic. We found that alpha females exhibited substantially lower fGCs than other females (typical reduction = 8.2%). If we used proportional rank instead of alpha- versus non-alpha status in the model, we observed a weak effect of rank such that fGCs rose 4.2% from the highest- to lowest-ranking female in the hierarchy. Models using ordinal rank, Elo rating, or high-middle-low categories alone failed to explain variation in female fGCs. Our findings shed new light on the association between dominance rank and the stress response, the competitive landscape of female baboons as compared to males, and the assumptions inherent in a researcher’s choice of rank metric.
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影响因子：
2.3
作者：
Archie, Elizabeth A.;Altmann, Jeanne;Alberts, Susan C.
通讯作者：
Alberts, Susan C.
影响因子：
2.3
作者：
Barton, RA;Byrne, RW;Whiten, A
通讯作者：
Whiten, A
DOI：
10.1111/j.1749-6632.2010.05531.x
发表时间：
2010-01-01
期刊：
REPRODUCTIVE AGING
影响因子：
--
作者：
Altmann, Jeanne;Gesquiere, Laurence;Alberts, Susan C.
通讯作者：
Alberts, Susan C.
影响因子：
2.4
作者：
Altmann, J;Lynch, JW;Gesquiere, LR
通讯作者：
Gesquiere, LR
影响因子：
3.5
作者：
Beehner JC;Gesquiere L;Seyfarth RM;Cheney DL;Alberts SC;Altmann J
通讯作者：
Altmann J