Hair cortisol concentrations correlate negatively with survival in a wild primate population.
Hair cortisol concentrations correlate negatively with survival in a wild primate population.
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DOI：
10.1186/s12898-017-0140-1
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发表时间：
2017-09-01
期刊：
影响因子：
--
通讯作者：
Kraus C
中科院分区：
文献类型：
--
作者：
Rakotoniaina JH;Kappeler PM;Kaesler E;Hämäläinen AM;Kirschbaum C;Kraus C
糖皮质激素已知在介导针对社会和生态应激源的一系列生理反应中起关键作用，因此能够影响动物的行为并最终影响其适应性。然而，到目前为止，在自然环境中糖皮质激素水平如何与繁殖成功或生存相关这一问题很少受到实证关注。在此，我们利用一种长期应激负荷指标（毛发皮质醇浓度），在一种小型、短寿命的灵长类动物——灰鼠狐猴（Microcebus murinus）中研究了生存与糖皮质激素水平之间的联系。我们采用捕获 - 标记 - 再捕获建模方法，在广泛的背景下（半年率）评估了应激对生存的影响，并且也在繁殖季节高能量需求的特定时期进行了评估。我们进一步评估了其他常用健康指标（身体状况和寄生虫感染）相对于长期应激影响在预测生存结果方面的效力。
我们发现，高毛发皮质醇水平在半年尺度以及繁殖季节都与生存概率降低相关。此外，非常好的身体状况（以尺度化体重指数衡量）在半年尺度上与生存增加相关，但在繁殖季节则不然。相比之下，寄生虫感染的差异无法预测生存情况。
总之，我们的结果表明，长期升高的糖皮质激素水平可能与生存以及种群动态相关，并表明对糖皮质激素、身体状况和寄生虫感染的选择强度存在差异。
本文的在线版本（doi:10.1186/s12898 - 017 - 0140 - 1）包含补充材料，授权用户可获取。
Glucocorticoid hormones are known to play a key role in mediating a cascade of physiological responses to social and ecological stressors and can therefore influence animals’ behaviour and ultimately fitness. Yet, how glucocorticoid levels are associated with reproductive success or survival in a natural setting has received little empirical attention so far. Here, we examined links between survival and levels of glucocorticoid in a small, short-lived primate, the grey mouse lemur (Microcebus murinus), using for the first time an indicator of long-term stress load (hair cortisol concentration). Using a capture-mark-recapture modelling approach, we assessed the effect of stress on survival in a broad context (semi-annual rates), but also under a specific period of high energetic demands during the reproductive season. We further assessed the power of other commonly used health indicators (body condition and parasitism) in predicting survival outcomes relative to the effect of long-term stress. We found that high levels of hair cortisol were associated with reduced survival probabilities both at the semi-annual scale and over the reproductive season. Additionally, very good body condition (measured as scaled mass index) was related to increased survival at the semi-annual scale, but not during the breeding season. In contrast, variation in parasitism failed to predict survival. Altogether, our results indicate that long-term increased glucocorticoid levels can be related to survival and hence population dynamics, and suggest differential strength of selection acting on glucocorticoids, body condition, and parasite infection. The online version of this article (doi:10.1186/s12898-017-0140-1) contains supplementary material, which is available to authorized users.
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DOI：
10.1098/rspb.2009.0868
发表时间：
2009-10-07
影响因子：
4.7
作者：
Angelier, Frederic;Holberton, Rebecca L.;Marra, Peter P.
通讯作者：
Marra, Peter P.
影响因子：
2.7
作者：
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通讯作者：
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影响因子：
5.2
作者：
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影响因子：
4.8
作者：
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通讯作者：
Wingfield, JC
影响因子：
2.7
作者：
Carlitz, Esther H. D.;Kirschbaum, Clemens;van Schalk, Carel P.
通讯作者：
van Schalk, Carel P.