Testing for between individual correlations of personality and physiological traits in a wild bird
Testing for between individual correlations of personality and physiological traits in a wild bird
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DOI：
10.1007/s00265-013-1635-1
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发表时间：
2014-02-01
影响因子：
2.3
通讯作者：
Brommer, Jon E.
中科院分区：
文献类型：
--
作者：
Kluen, Edward;Siitari, Heli;Brommer, Jon E.
最近，人格特质整合到“生活节奏综合征”（POLS）的背景下一直提倡。为了能够理解一个人的行为，生理和生活史特征如何共同进化，我们需要联合量化这些特征，以研究它们的协方差。很少有研究建立了个性和个体免疫特性之间的联系。在这里，我们研究了协变的测量骨骼大小（跗骨长度），三个行为特征（活动，处理侵略和呼吸频率）和两个免疫学特征（IgG水平和红细胞压积），在592野生捕获的蓝山雀。许多个体（201）进行了一次以上的测试，允许量化所有性状的个体一致性，并使用多变量混合模型将性状之间的协方差划分为个体和残差协方差。我们发现所有行为特征的个体一致性，表明这些捕获蓝山雀成年人个性的方面以及生理措施是可重复的。与POLS的预期相反，我们发现这些性状之间没有整体显着的个体水平的相关结构，因子分析方法证实，个体之间的相关性，跨性状不是由于一个共同的（POLS）因素或大小（跗骨长度）驱动。基于已发表的功效研究，我们得出结论，野生蓝山雀的个性和生理特征之间不存在个体水平协方差的共同综合征，或者这种综合征产生的效应量太低（r < 0.3）而无法检测。未来基于实地的工作应旨在探索低效应量，并努力测量特定的特征，其参与是牵连到有大的效应量的基础上，例如实验室的研究结果。
Recently, integration of personality traits into a 'pace-of-life syndrome' (POLS) context has been advocated. To be able to understand how an individual's behavioural, physiological and life history traits may coevolve, we need to jointly quantify these traits in order to study their covariance. Few studies have established links between personality and immunity properties of an individual. We here examined covariation of a measure of skeletal size (tarsus length), three behavioural traits (activity, handling aggression and breath rate) and two immunological traits (IgG level and haematocrit), in 592 wild caught blue tits. Many individuals (201) were tested more than once, allowing quantification of individual consistency of all traits and partition of the covariances between the traits, using a multivariate mixed model, into between individual and residual covariances. We find individual consistency of all behavioural traits, indicating that these capture aspects of blue tit adult personality and also the physiological measures are repeatable. Contrary to the POLS expectation, we find no overall significant individual level correlation structure between these traits and a factor analytical approach confirmed that between individual correlations across traits were not due to a common (POLS) factor or driven by size (tarsus length). Based on a published power study, we conclude that there is no common syndrome of individual level covariance between personality and physiological traits in wild blue tits or that the effect sizes, such a syndrome generates, are too low (r < 0.3) to detect. Future field-based work should be designed to explore low effect sizes and strive to measure specific traits whose involvement is implicated to have large effect sizes as based on, e.g. laboratory findings.