Personality and temporal plasticity in fish populations along a gradient of evolutionary divergence ...

• Main Authors: Benhaim, David, Leblanc, Camille, Vernier, Louise
• Format: Dataset
• Language: English
• Published: Dryad 2023
• Subjects: FOS Biological sciences; adaptive divergence; boldness; Personality; DNA polymorphism; temporal plasticity; Arctic; Arctic charr; Salvelinus alpinus
• Online Access: https://dx.doi.org/10.5061/dryad.05qfttf71; https://datadryad.org/stash/dataset/doi:10.5061/dryad.05qfttf71

Personality is now recognized as an ecologically and evolutionarily significant phenomenon because it can affect fitness directly. However, empirical studies specifically tackling the importance of personality in the processes of adaptive divergence and speciation are scarce. Whether selection favours plasticity or canalization of personality traits in specific contexts and how ecological conditions affect the presence and the structure of personalities remain to be elucidated. We used five populations of Arctic charr, Salvelinus alpinus, chosen along a gradient of genetic and phenotypic divergence: an anadromous population supposedly close to the ancestral population and two pairs of sympatric lake morphs. Fish were raised individually from eggs in a common-garden experiment to specifically assess the genetic bases of the boldness trait in these populations. Thirty-two individuals per morph were repeatedly tested at 11 months old in an open field test with a shelter to assess boldness. The repeatability of ...