Natural selection, plasticity and the emergence of a behavioural syndrome in the wild
Natural selection, plasticity and the emergence of a behavioural syndrome in the wild
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DOI：
10.1111/ele.12011
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发表时间：
2013-01-01
期刊：
影响因子：
8.8
通讯作者：
Johnsson, Jorgen I.
中科院分区：
文献类型：
--
作者：
Adriaenssens, Bart;Johnsson, Jorgen I.
个人往往表现出一致的行为差异，行为可以在功能不同的环境中形成综合单位。然而，在自然人群中引起和维持行为综合征的因素仍然知之甚少。在这项研究中，我们提供的证据出现的行为综合征在生命的头几个月在野生褐鳟鱼（萨尔莫trutta）。鳟鱼的行为特征进行了评分之前和之后的2个月的时间间隔，涵盖了一个主要的生存瓶颈，据此行为的一致性和协方差进行了分析。我们发现，选择有利于个人在开放领域的背景下，高活动水平，在整个实验期间的个性特征一致。此外，在野外的2个月里出现了一种行为综合征，将活动与侵略性和探索倾向联系起来。这些新的结果表明，行为综合征可以迅速出现在自然选择和行为可塑性之间的相互作用，影响单一行为的性质。
Individuals often show consistent behavioural differences where behaviours can form integrated units across functionally different contexts. However, the factors causing and maintaining behavioural syndromes in natural populations remain poorly understood. In this study, we provide evidence for the emergence of a behavioural syndrome during the first months of life in wild brown trout (Salmo trutta). Behavioural traits of trout were scored before and after a 2-month interval covering a major survival bottleneck, whereupon the consistency and covariance of behaviours were analysed. We found that selection favoured individuals with high activity levels in an open-field context, a personality trait consistent throughout the duration of the experiment. In addition, a behavioural syndrome emerged over the 2 months in the wild, linking activity to aggressiveness and exploration tendency. These novel results suggest that behavioural syndromes can emerge rapidly in nature from interaction between natural selection and behavioural plasticity affecting single behaviours.