How integrated are behavioral and endocrine stress response traits? A repeated measures approach to testing the stress-coping style model.
How integrated are behavioral and endocrine stress response traits? A repeated measures approach to testing the stress-coping style model.
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DOI：
10.1002/ece3.1395
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发表时间：
2015-02
影响因子：
2.6
通讯作者：
Walling, Craig A.
中科院分区：
文献类型：
--
作者：
Boulton, Kay;Couto, Elsa;Grimmer, Andrew J.;Earley, Ryan L.;Canario, Adelino V. M.;Wilson, Alastair J.;Walling, Craig A.
关键词：
人们普遍认为，生理和行为应激反应将被整合到不同的应激应对方式(SCS)中，这些方式可能代表着一个不断变化的反应-主动轴的两端。如果这样的模型是有效的，那么应激反应特征应该是可重复的，生理和行为反应也应该沿着个体间变异的主轴以综合的方式改变。虽然有一些证据表明内分泌和行为应激反应特征之间存在关联，但很少有研究将两者的重复观察结合在一起。为了检验这个模型，我们在剑鱼圈养种群中使用了多变量、重复测量的方法。我们量化了在模拟捕食者攻击(SPA)的开场试验(OFT)中行为应激反应的个体间差异，并测量了暴露前后的水性类固醇激素水平(皮质醇、11-酮睾酮)。在轻度应激刺激(OFT)下，个体之间的(多变量)行为变化与较强的人格轴(害羞-大胆)或应对方式(反应性-主动性)变化一致。然而，对中等应激源(SPA)的行为反应的可重复性较差，在整个采样期内对可重复内分泌状态的强有力的统计支持仅限于11-酮睾酮。尽管事后分析表明皮质醇的表达在短时间内是可重复的，但行为和糖皮质激素水平之间的定性关系与我们的先验预期相反。因此，尽管我们的结果清楚地显示了与应激反应相关的行为和内分泌特征的个体差异，但这些特征之间的相关性结构与综合应激应对方式的简单主动反应轴并不一致。此外，皮质醇的低重复性表明，如果在关注个体水平的生态或进化研究中使用糖皮质激素特征的单一观察(或在短采样周期内重复测量)，则需要谨慎。
It is widely expected that physiological and behavioral stress responses will be integrated within divergent stress-coping styles (SCS) and that these may represent opposite ends of a continuously varying reactive–proactive axis. If such a model is valid, then stress response traits should be repeatable and physiological and behavioral responses should also change in an integrated manner along a major axis of among-individual variation. While there is some evidence of association between endocrine and behavioral stress response traits, few studies incorporate repeated observations of both. To test this model, we use a multivariate, repeated measures approach in a captive-bred population of Xiphophorus birchmanni. We quantify among-individual variation in behavioral stress response to an open field trial (OFT) with simulated predator attack (SPA) and measure waterborne steroid hormone levels (cortisol, 11-ketotestosterone) before and after exposure. Under the mild stress stimulus (OFT), (multivariate) behavioral variation among individuals was consistent with a strong axis of personality (shy–bold) or coping style (reactive–proactive) variation. However, behavioral responses to a moderate stressor (SPA) were less repeatable, and robust statistical support for repeatable endocrine state over the full sampling period was limited to 11-ketotestosterone. Although post hoc analysis suggested cortisol expression was repeatable over short time periods, qualitative relationships between behavior and glucocorticoid levels were counter to our a priori expectations. Thus, while our results clearly show among-individual differences in behavioral and endocrine traits associated with stress response, the correlation structure between these is not consistent with a simple proactive–reactive axis of integrated stress-coping style. Additionally, the low repeatability of cortisol suggests caution is warranted if single observations (or indeed repeat measures over short sampling periods) of glucocorticoid traits are used in ecological or evolutionary studies focussed at the individual level.
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影响因子：
2.2
作者：
Carere, Claudio;Caramaschi, Doretta;Fawcett, Tim W.
通讯作者：
Fawcett, Tim W.
影响因子：
1.4
作者：
Budaev, SV
通讯作者：
Budaev, SV
影响因子：
2.6
作者：
Barton, BA
通讯作者：
Barton, BA
DOI：
10.1111/j.1749-6632.1998.tb09006.x
发表时间：
1998-01-01
期刊：
STRESS OF LIFE
影响因子：
--
作者：
Chrousos, GP
通讯作者：
Chrousos, GP
影响因子：
5.2
作者：
Archard, Gabrielle A.;Earley, Ryan L.;Braithwaite, Victoria A.
通讯作者：
Braithwaite, Victoria A.