Age-related differences in the cloacal microbiota of a wild bird species

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2013
Autor:innen
van Dongen, Wouter F. D.
White, Joël
Moodley, Yoshan
Merkling, Thomas
Leclaire, Sarah
Blanchard, Pierrick
Danchin, Étienne
Hatch, Scott A.
Wagner, Richard H.
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BMC Ecology. BioMed Central. 2013, 13(1), 11. eISSN 1472-6785. Available under: doi: 10.1186/1472-6785-13-11
Zusammenfassung

Background

Gastrointestinal bacteria play a central role in the health of animals. The bacteria that individuals acquire as they age may therefore have profound consequences for their future fitness. However, changes in microbial community structure with host age remain poorly understood. We characterised the cloacal bacteria assemblages of chicks and adults in a natural population of black-legged kittiwakes (Rissa tridactyla), using molecular methods.

Results

We show that the kittiwake cloaca hosts a diverse assemblage of bacteria. A greater number of total bacterial OTUs (operational taxonomic units) were identified in chicks than adults, and chicks appeared to host a greater number of OTUs that were only isolated from single individuals. In contrast, the number of bacteria identified per individual was higher in adults than chicks, while older chicks hosted more OTUs than younger chicks. Finally, chicks and adults shared only seven OTUs, resulting in pronounced differences in microbial assemblages. This result is surprising given that adults regurgitate food to chicks and share the same nesting environment.

Conclusions

Our findings suggest that chick gastrointestinal tracts are colonised by many transient species and that bacterial assemblages gradually transition to a more stable adult state. Phenotypic differences between chicks and adults may lead to these strong differences in bacterial communities. These data provide the framework for future studies targeting the causes and consequences of variation in bacterial assemblages in wild birds.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
570 Biowissenschaften, Biologie
Schlagwörter
Age-differences, Automated ribosomal intergenic spacer analysis, Bacteria, Black-legged kittiwakes, Cloaca, Gastrointestinal tract
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ISO 690VAN DONGEN, Wouter F. D., Joël WHITE, Hanja B. BRANDL, Yoshan MOODLEY, Thomas MERKLING, Sarah LECLAIRE, Pierrick BLANCHARD, Étienne DANCHIN, Scott A. HATCH, Richard H. WAGNER, 2013. Age-related differences in the cloacal microbiota of a wild bird species. In: BMC Ecology. BioMed Central. 2013, 13(1), 11. eISSN 1472-6785. Available under: doi: 10.1186/1472-6785-13-11
BibTex
@article{vanDongen2013-03-25Agere-48434,
  year={2013},
  doi={10.1186/1472-6785-13-11},
  title={Age-related differences in the cloacal microbiota of a wild bird species},
  number={1},
  volume={13},
  journal={BMC Ecology},
  author={van Dongen, Wouter F. D. and White, Joël and Brandl, Hanja B. and Moodley, Yoshan and Merkling, Thomas and Leclaire, Sarah and Blanchard, Pierrick and Danchin, Étienne and Hatch, Scott A. and Wagner, Richard H.},
  note={Article Number: 11}
}
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