Samanburður á einstaklingseinkennum sem metin eru á rannsóknarstofu og úti í náttúrunni, og áhrif þeirra á hreyfingu og lífslíkur bleikja (Salvelinus alpinus) - verkefni lokið
Fréttatilkynning verkefnisstjóra
Animals often differ consistently in behavior within populations, i.e., personality, which may be a result of responding differently to changes within their environment, for example by moving towards favorable and/or avoiding unfavorable conditions. Seasonality can act directly on movement behavior, but the influence of personality is less clear.
Here, we investigated the consistency of seasonal, long-term (one year) exploration and boldness estimates in the laboratory, initial dispersal from release (a natural measure of exploration), seasonal large-scale space use in the field, and the correlation between these variables. Stream-dwelling Arctic charr were assessed for boldness and exploration in the laboratory in two summers and intervening winter. In between these measurements, the fish roamed freely in their stream of origin, where weekly GPS positions were collected in summer and early winter as an indication of natural space use. Laboratory exploration was found to be repeatable within and between summers, but not between summer and winter whereas boldness was repeatable within summer, but only marginally repeatable from summer to winter and not between consecutive summers. Furthermore, distances between consecutive GPS positions in the field were repeatable within summer, but not within winter, nor between seasons. Finally, small-scale laboratory exploration did explain natural larger-scale exploration of Arctic charr marginally, but not space use in the field. This study contributes to the knowledge of the influence of seasonal change on behavioral consistency and repeatable space use in the field and shows that the link between the laboratory and natural behavior is not straightforward.
Information on how the results will be applied:
This study will contribute fundamentally to the validation of currently used laboratory personality estimates to explain behaviour and survival in the (semi)-wild. In addition, it will provide more insight into the validity of the pace-of-life hypothesis in stream-dwelling salmonids. Furthermore, the results can be applied for conservation. Individual space use patterns have important implications for the conservation and management of stream fish. Specifically, this study will provide basic scientific information on (i) the way individuals and populations respond to natural and anthropogenic changes in e.g., water current velocity, depth, and temperature, (ii) the inherent differences that may exist among individuals within populations in terms of their ability to track and relocate among favorable and unfavorable habitats, and ultimately (iii) how flexible and resilient individuals and populations may be under changing/adverse conditions.
A list of the project’s outputs:
Two manuscripts have been written, which are part of the published PhD thesis of Rosanne Beukeboom:
Beukeboom, R. (2023). Can personality predict movement patterns and space use in fishes? [University of Iceland, School of Engineering and Natural Sciences, Faculty of Life and Environmental Sciences. https://hdl.handle.net/20.500.11815/4519.
Manuscript I:
Beukeboom, R., Prat, A., Steingrímsson, S.Ó., Benhaïm, D..
Consistency and correlation of behavioural traits measured in the laboratory and semiwild conditions: A study case in stream-dwelling Arctic charr (Salvelinus alpinus).
Manuscript II:
Beukeboom, R., Prat, A., Ladurée, G., Steingrímsson, Stefán Ó., Benhaïm, D. (under review at Behavioral Ecology). The influence of seasonality on personality and space use in Arctic charr (Salvelinus alpinus).
Heiti verkefnis: Samanburður á
einstaklingseinkennum sem metin eru á rannsóknarstofu og úti í náttúrunni, og
áhrif þeirra á hreyfingu og lífslíkur bleikja (Salvelinus alpinus)/The
correlation of personality scores between laboratory and semi-wild experiments,
and its influence on movement and survival of Arctic char (Salvelinus alpinus)
Verkefnisstjóri: Rosanne Beukeboom,
Háskóla Íslands
Tegund styrks: Doktorsnemastyrkur
Styrktímabil: 2022
Fjárhæð styrks kr. 7.714.000
Tilvísunarnúmer Rannís: 228443
