Maternal stress effects across generations in a precocial bird - Archive ouverte HAL
Article Dans Une Revue Royal Society Open Science Année : 2024

Maternal stress effects across generations in a precocial bird

Sophie Lumineau
Isabelle George
Rupert Palme
Céline Nicolle
  • Fonction : Auteur
  • PersonId : 981529
Anne-Sophie Darmaillacq
Ludovic Dickel
Daniel Guemene
Cécilia Houdelier
  • Fonction : Auteur
  • PersonId : 177101
  • IdHAL : choudelier

Résumé

Prenatal maternal stress (PMS) is known to shape the phenotype of the first generation offspring (F1) but according to some studies, it could also shape the phenotype of the offspring of the following generations. We previously showed in the Japanese quail that PMS increased the emotional reactivity of F1 offspring in relation to (i) a variation in the levels of some histone post-translational modification (H3K27me3) in their brains and (ii) a modulation of the hormonal composition of the eggs from which they hatched. Here, we wondered whether PMS could also influence the behaviour of the second (F2) and third (F3) generation offspring due to the persistence of the specific marks we identified. Using a principal component analysis, we found that PMS influenced F2 and F3 quail profiles with subtle differences between generations. It increased F2 neophobia, F3 fearfulness and F3 neophobia but only in females. Interestingly, we did not find any variations in the level of histone post-translational modification in F3 brains and we observed inconsistent modulations of androstenedione levels in F1 and F2 eggs. Although they may vary over generations, our results demonstrate that PMS can have phenotypical effects into the third generation.
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hal-04699193 , version 1 (17-09-2024)

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Marion Charrier, Sophie Lumineau, Isabelle George, Maryse Meurisse, Marion Georgelin, et al.. Maternal stress effects across generations in a precocial bird. Royal Society Open Science, 2024, 11 (8), pp.231826. ⟨10.1098/rsos.231826⟩. ⟨hal-04699193⟩
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