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Behavioural plasticity of motor personality traits in the common vole under three-day continual observation in a test box
Behavioural Processes ( IF 1.3 ) Pub Date : 2021-05-07 , DOI: 10.1016/j.beproc.2021.104418
Gabriela Urbánková , Jan Riegert , Nella Mladěnková , Petra Kolářová , Zdeněk Eliáš , František Sedláček

In animals, behavioural personality traits have been well-documented in a wide array of species. However, these traits, different between individuals, are not completely stable in individuals. They show behavioural plasticity like many other phenotypic traits. This plasticity is able to overcome some weak aspects of personality trait behavioural strategy. In the present study, we examined the relationship between motor personality traits and behavioural plasticity in the common vole (Microtus arvalis) using a PhenoTyper (PT) box (Noldus). During a three-day test, four behavioural motor activity parameters were monitored in 47 voles: distance moved, (loco)motion duration, motion change frequency, sprint duration. Consistency repeatability (RC) of the parameters from the PT test was very high, with all values ≥ 0.91. To select the best linear mixed-effect models (LMMs), several predictors (test day, sex, body weight) were tested. Only test day had a significant effect on the dependent variables and other predictors did not improve the LMMs. Further, we found significant effects of random intercepts (motor personality traits) and slopes (behavioural plasticity), as well as significant negative correlations between them for all behavioural parameters. Our results indicate that motor personality traits were connected with behavioural plasticity. Moreover, we revealed a significant positive correlation between the random slopes of (loco)motion duration and motion change frequency. This relationship could indicate some central plasticity of motor personality traits. In conclusion, negative correlations between the motor personality traits and the behavioural plasticity demonstrate expression of convergent tendency from both opposite trait values. This corresponds with different ideas on ability to compensate personality effects or to prepare for potential future conditions. In the laboratory, plasticity of personality traits take place whenever an animal is placed e. g. in a breeding box for the first time or is left for a long time in an experimental apparatus.



中文翻译:

在测试箱中连续三天观察普通田鼠运动人格特征的行为可塑性

在动物中,行为人格特征已在许多物种中得到了充分证明。但是,这些特征因人而异,在个体中并不完全稳定。它们表现出行为可塑性,就像许多其他表型特征一样。这种可塑性能够克服人格特质行为策略的某些薄弱环节。在本研究中,我们使用PhenoTyper(PT)盒(Noldus)检验了田鼠(Microtus arvalis)的运动人格特征与行为可塑性之间的关系。在为期三天的测试中,在47头田鼠中监测了四个行为运动活动参数:移动距离,(局部)运动持续时间,运动改变频率,冲刺持续时间。一致性重复性(R CPT测试的参数)非常高,所有值≥0.91。为了选择最佳的线性混合效应模型(LMM),测试了多个预测变量(测试日,性别,体重)。仅测试日对因变量有显着影响,而其他预测指标并未改善LMM。此外,我们发现随机截距(运动人格特征)和斜率(行为可塑性)的显着影响,以及它们之间对于所有行为参数的显着负相关。我们的结果表明,运动人格特质与行为可塑性有关。此外,我们揭示了(运动)运动持续时间的随机斜率与运动变化频率之间的显着正相关。这种关系可能表明运动人格特质在某些方面具有可塑性。综上所述,运动型人格特质与行为可塑性之间的负相关表明两个相反的特质值均表现出趋同趋势。这与在补偿人格效应或为将来的潜在条件做准备的能力上的不同想法相对应。在实验室中,每当将动物第一次放置在繁殖箱中或在实验设备中放置很长时间时,人格特质的可塑性就会发生。

更新日期:2021-05-11
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