Title
Interplay between plasma oxidative status, cortisol and coping styles in wild alpine marmots, **Marmota marmota** Interplay between plasma oxidative status, cortisol and coping styles in wild alpine marmots, **Marmota marmota**
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
London ,
Subject
Biology
Human medicine
Source (journal)
The journal of experimental biology. - London
Volume/pages
215(2012) :2 , p. 374-383
ISSN
0022-0949
ISI
000298404800024
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Abstract
Variation in how individuals cope behaviourally and physiologically with stressors is widespread and can have a significant impact on life-history traits and fitness. Individual coping styles are characterised by differential behavioural and adrenocortical reactivity to various challenges. As stress hormones can affect the production of reactive chemical species and the antioxidant status, individuals with different coping styles may differ also in oxidative status. Field studies on wild mammalian populations are few in number and none so far has simultaneously tested the relationship between coping style, adrenocortical reactivity and oxidative status in the same individuals. We measured individual variation in coping styles along a proactive-reactive continuum together with variation in baseline and stress-induced plasma oxidative damage, plasma non-enzymatic antioxidant capacity and cortisol in wild alpine marmots, Marmota marmota. Confirmatory path analysis revealed that different coping styles are accompanied by different baseline and stress-induced plasma oxidative statuses. Our findings also highlight the potential role of cortisol as a mediator of such differences.
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