Behaviour, physiology and carotenoid pigmentation in Arctic charr Salvelinus alpinus

The behaviour during an exploration task and the response to a confinement stress of Arctic charr Salvelinus alpinus were evaluated. Behaviour of individuals during 90 min of exploration was classified into high and low activity. High‐activity individuals had higher plasma cortisol levels following...

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Bibliographic Details
Published in:Journal of Fish Biology
Main Authors: Backström, T., Brännäs, E., Nilsson, J., Magnhagen, C.
Other Authors: Swedish Research Council Formas
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2013
Subjects:
Aquatic Science
Ecology, Evolution, Behavior and Systematics
Arctic charr
Arctic
Salvelinus alpinus
Online Access:http://dx.doi.org/10.1111/jfb.12240
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.12240
https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.12240
Description
Summary:The behaviour during an exploration task and the response to a confinement stress of Arctic charr Salvelinus alpinus were evaluated. Behaviour of individuals during 90 min of exploration was classified into high and low activity. High‐activity individuals had higher plasma cortisol levels following stress compared to low‐activity individuals. This indicates that high‐ and low‐activity individuals correspond to reactive and proactive stress‐coping styles. Further, a pigmentation analysis showed that high‐activity individuals had a higher number of carotenoid spots cm −2 than low‐activity individuals. Thus, carotenoid pigmentation, as melanin pigmentation in other salmonids, could be linked to stress‐coping style in S. alpinus .

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