Evidence for host effect on the intestinal microbiota of whitefish (
captive whitefish
intestinal microbiota
speciation
wild whitefish
Journal
Ecology and evolution
ISSN: 2045-7758
Titre abrégé: Ecol Evol
Pays: England
ID NLM: 101566408
Informations de publication
Date de publication:
Oct 2019
Oct 2019
Historique:
received:
03
07
2019
revised:
03
09
2019
accepted:
04
09
2019
entrez:
8
11
2019
pubmed:
7
11
2019
medline:
7
11
2019
Statut:
epublish
Résumé
Investigating relationships between microbiota and their host is essential toward a full understanding of how animal adapt to their environment. Lake Whitefish offers a powerful system to investigate processes of adaptive divergence where the dwarf, limnetic species evolved repeatedly from the normal, benthic species. We compared the transient intestinal microbiota between both species from the wild and in controlled conditions, including their reciprocal hybrids. We sequenced the 16s rRNA gene V3-V4 regions to (a) test for parallelism in the transient intestinal microbiota among sympatric pairs, (b) test for transient intestinal microbiota differences among dwarf, normal, and hybrids reared under identical conditions, and (c) compare intestinal microbiota between wild and captive whitefish. A significant host effect on microbiota taxonomic composition was observed when all lakes were analyzed together and in three of the five species pairs. In captive whitefish, host effect was also significant. Microbiota of both reciprocal hybrids fell outside of that observed in the parental forms. Six genera formed a bacterial core which was present in captive and wild whitefish, suggesting a horizontal microbiota transmission. Altogether, our results complex interactions among the host, the microbiota, and the environment, and we propose that these interactions define three distinct evolutionary paths of the intestinal microbiota.
Identifiants
pubmed: 31695886
doi: 10.1002/ece3.5676
pii: ECE35676
pmc: PMC6822036
doi:
Types de publication
Journal Article
Langues
eng
Pagination
11762-11774Informations de copyright
© 2019 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd.
Déclaration de conflit d'intérêts
The authors declare no conflicts of interest.
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