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Age-related differences in the cloacal microbiota of a wild bird species
journal contribution
posted on 2023-02-07, 00:23 authored by Wouter Van Dongen, J White, HB Brandl, Y Moodley, T Merkling, S Leclaire, P Blanchard, E Danchin, SA Hatch, RH WagnerBackground: 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. © 2013 van Dongen et al.; licensee BioMed Central Ltd.
History
Journal
BMC EcologyVolume
13Article number
ARTN 11Location
EnglandPublisher DOI
ISSN
1472-6785eISSN
1472-6785Language
EnglishIssue
1Publisher
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Keywords
Science & TechnologyLife Sciences & BiomedicineEcologyEnvironmental Sciences & EcologyAge-differencesAutomated ribosomal intergenic spacer analysisBacteriaBlack-legged kittiwakesCloacaGastrointestinal tractBACTERIAL COMMUNITY STRUCTUREINTESTINAL FLORAANIMAL BEHAVIOREVOLUTIONACQUISITIONPREVALENCEDIVERSITYPATHOGENSPATTERNSAge FactorsAnimalsAnimals, WildCharadriiformesFemaleMaleMicrobiotaMolecular Sequence DataPhylogenyInfectious Diseases2.2 Factors relating to the physical environment2 AetiologyInfectionEvolutionary BiologyEcology
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