The crop milk: a potential new route for carotenoid-mediated parental effects - Université de Bourgogne
Article Dans Une Revue Journal of Avian Biology Année : 2008

The crop milk: a potential new route for carotenoid-mediated parental effects

Cyril Eraud
Bruno Faivre

Résumé

Allocation of carotenoid pigments, either through nutritional provisioning or from endogenous reserves, makes up a form of non-genetic parental investment to progeny that may contribute to fitness. To date, carotenoids derived from endogenous reserves have been acknowledged as important vectors in translating only avian female phenotype and environmental conditions experienced prior to laying. Here, we show that in columbidae, crop milk delivered by both parents may provide chicks with a large amount of endogenous carotenoids at the postzygotic stage. Major carotenoids were xanthophylls and beta-carotene, but their concentrations showed large variation among individuals. Interestingly, a large amount of this variation was explained by brood identity, suggesting either environmental influences and/or phenotypic influences on a parent's ability to transfer these biomolecules. Our study therefore illuminates a potential new route for endogenous carotenoid-mediated parental effects.
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hal-00294461 , version 1 (30-11-2021)

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Cyril Eraud, Adrien Dorie, Anne Jacquet, Bruno Faivre. The crop milk: a potential new route for carotenoid-mediated parental effects. Journal of Avian Biology, 2008, 39 (2), pp.247-251. ⟨10.1111/j.2008.0908-8857.04053.x⟩. ⟨hal-00294461⟩
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