Líffræðifélag Íslands - biologia.is
Líffræðiráðstefnan 2025
Erindi/veggspjald / Talk/poster E108
Höfundar / Authors: Sabine Lobligeois*(1,2), Noé Leneveu (3), Maelenn Beillevaire (3), Gabrielle Ladurée (1,2), Marie Delbasty (1), Manuel Gesto (4), David Benhaïm (1)
Starfsvettvangur / Affiliations: (1) Department of Aquaculture and Fish Biology, Hólar University, Iceland. (2) Institute of Life and Environmental Sciences, School of Engineering and Natural Sciences, University of Iceland, Iceland. (3) Institut Agro Rennes-Angers, France. (4) DTU AQUA, National Institute of Aquatic Resources, Denmark.
Kynnir / Presenter: Sabine B.C. Lobligeois
Coping styles are individually coherent sets of behavioural and physiological responses to stress. These traits are considered consistent across time and contexts. Thus, in a context of animal welfare improvement, interest in understanding coping styles has been increasing. Previous studies have shown that risk-taking behaviours in Arctic charr from the Icelandic aquaculture strain are consistent over time. However, the link between consistent behavioural traits and physiological stress response remains poorly understood. To address this gap, we raised Arctic charr (Savelinus alpinus) from an Icelandic aquaculture strain, representing six different families, in either plain tanks or tanks containing a shelter. 96 individuals per treatment were tested three times for exploratory and risk-taking behaviours. After a 7 to 15 days, the same fish were exposed to a standardized netting stressor, and blood samples were collected either 40 minutes or 160 minutes post-stress. The liver was also extracted and weighted. We investigated the influence of genetic (family) and environmental (tank condition) factors on personality traits and physiological stress responses. Finally, we explored correlations between traits. The project and its preliminary results regarding the factors influencing physiology and behaviour, as well as the correlations between these traits will be presented, as well as the implications for the Arctic charr breeding programme in Iceland.