Age-related differences revealed in Australian fur seal Arctocephalus pusillus doriferus gut microbiota

Smith, Stuart C., Chalker, Andrea, Dewar, Meagan L. and Arnould, John P.Y. 2013, Age-related differences revealed in Australian fur seal Arctocephalus pusillus doriferus gut microbiota, FEMS microbiology ecology, vol. 86, no. 2, pp. 246-255.

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Title Age-related differences revealed in Australian fur seal Arctocephalus pusillus doriferus gut microbiota
Author(s) Smith, Stuart C.
Chalker, Andrea
Dewar, Meagan L.
Arnould, John P.Y.
Journal name FEMS microbiology ecology
Volume number 86
Issue number 2
Start page 246
End page 255
Total pages 10
Publisher Wiley
Place of publication London, England
Publication date 2013
ISSN 0168-6496
1574-6941
Keyword(s) 16S rRNA gene pyrosequencing
fluorescent in situ hybridisation
gastrointestinal tract bacteria
seals
Summary The gut microbiota of Australian fur seals (Arctocephalus pusillus doriferus) was examined at different age classes using fluorescent in situ hybridisation (FISH) and 16S rRNA gene pyrosequencing. The FISH results indicated that in the fur seal groups, the predominant phyla are Firmicutes (22.14-67.33%) followed by Bacteroidetes (3.11-15.45%) and then Actinobacteria (1.4-5.9%) consistent with other mammals. Phylum Proteobacteria had an initial abundance of 1.8% in the 2-month-old pups, but < 1% of bacterial numbers for the other fur seal age groups. Significant differences did occur in the abundance of Clostridia, Lactobacilli and Bifidobacteria between 2 months pups and 9 months pups and adult fur seals. Results from the 16S rRNA gene pyrosequencing supported the FISH data and identified significant differences in the composition of Firmicutes, Bacteroidetes, Actinobacteria, Proteobacteria, Verrucomicrobia and Fusobacteria at all ages. Class Clostridia in phylum Firmicutes dominates the microbiota of the 2 months and 9 months seal pups, whilst class Bacilli dominates the 6 months pups. In addition, a high level of dissimilarity was observed between all age classes. This study provides novel insight into the gut microbiota of Australian fur seals at different age classes.
Language eng
Field of Research 059999 Environmental Sciences not elsewhere classified
Socio Economic Objective 970105 Expanding Knowledge in the Environmental Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Persistent URL http://hdl.handle.net/10536/DRO/DU:30055351

Document type: Journal Article
Collection: School of Exercise and Nutrition Sciences
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