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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Eggshell microbiota of a brood parasite reflects environment, not species (2022)
Auteurs :	Brent Basso, Auteur ; Emma Poryanda, Auteur ; Eliza Grames, Auteur ; Kirsten Grond, Auteur ; Sarah A. Knutie, Auteur ; Sarah M. Hird, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (163(3) July, 2022)
Article en page(s) :	757-766
Langues:	Anglais
Mots-clés:	16S rRNA ; Avian microbiome ; Brood parasite ; Eggshells ; Microbiota
Résumé :	Microbiota affect many aspects of vertebrate biology and vertebrates provide diverse ecological niches for microorganisms. In avian systems, potential habitats for microorganisms include the feathers, skin, gastrointestinal tract, and eggshells. Eggshell microbiota may seed bird microbiota as the birds hatch and may be shaped by parental and environmental influences. Brood parasites are a natural system where parental and environmental influences are obligately decoupled. Here, we sequenced the V4 region of the 16S rRNA gene to characterize the eggshell microbiota of a brood parasite, the Brown-headed Cowbird (Molothrus ater), and its host, the Ovenbird (Seiurus aurocapilla), to explore the relationships between nest environment, host phylogeny, and the eggshell microbiota. Eggshell microbiota did not differ significantly between species. The observed variation was best explained by the nest in which an egg was laid and the collection site. Our study suggests that eggshell microbiota are influenced by the nest and local environment with significantly less influence by the species of the bird.
En ligne :	https://doi.org/10.1007/s10336-022-01973-6

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