Data from: Proactive avoidance behaviour and pace-of-life syndrome in Atlantic salmon ...

• Main Authors: Damsgård, Børge, Evensen, Tor H., Øverli, Øyvind, Gorissen, Marnix, Ebbesson, Lars, Ray, Sonia, Höglund, Erik
• Format: Dataset
• Language: English
• Published: Dryad 2019
• Subjects: Salmo salar; Hypoxia; Cortisol; Coping style; Damsgård; Atlantic salmon
• Online Access: https://dx.doi.org/10.5061/dryad.4187519; https://datadryad.org/stash/dataset/doi:10.5061/dryad.4187519

Individuals in a fish population differ in key life history traits such as growth rate and body size. This raises the question of whether such traits cluster along a fast-slow growth continuum according to a pace-of-life syndrome (POLS). Fish species like salmonids may develop a bimodal size distribution, providing an opportunity to study the relationships between individual growth and behavioural responsiveness. Here we test whether proactive characteristics (bold behaviour coupled with low post-stress cortisol production) are related to fast growth and developmental rate in Atlantic salmon, Salmo salar. Boldness was tested in a highly controlled two-tank hypoxia test were oxygen levels were gradually decreased in one of the tanks. All fish became inactive close to the bottom at 70% oxygen saturation. At oxygen saturation level of 40% a fraction of the fish actively sought out to avoid hypoxia. A proactive stress coping style was verified by lower cortisol response to a standardized stressor. Two distinct ... : Data from Damsgård et al ...