La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Crosstalk between growth and somatic maintenance in young animals (2017)
Auteurs :	Jaanis Lodjak, Auteur ; Marko Magi, Auteur
Type de document :	Article
Dans :	Journal of Avian Biology (48(11) November 1, 2017)
Article en page(s) :	1360-1363
Langues:	Anglais
Résumé :	Growing animals face allocation problems whenever receiving suboptimal amounts of resources in very stochastic natural environments, possibly through a trade-off between growth and somatic maintenance. However, the extent to which such a trade-off exists has remained an open question. We used an insulin-like growth factor 1 (IGF-1) injection treatment in free-living pied flycatcher Ficedula hypoleuca nestlings to see how IGF-1 levels mediate the development of an antioxidant phenotype via glutathione peroxidase (GPx). Our study showed that IGF-1 levels underlie variation in GPx activity and provides important information for understanding the mechanisms behind the growth variation of passerines.
En ligne :	http://onlinelibrary.wiley.com/doi/10.1111/jav.01519/abstract

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