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Faecal microbiota changes associated with the moult fast in chinstrap and gentoo penguins

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Title
Faecal microbiota changes associated with the moult fast in chinstrap and gentoo penguins
Other Titles
젠투펭귄과 턱끈펭귄의 깃갈이 단식에 따른 분변 미생물 변화
Authors
Lee, Won Young
Cho, Hyujun
Kim, Mincheol
Tripathi, Binu Mani
Jung, Jin-Woo
Chung, Hosung
Kim, Jeong-Hoon
Keywords
깃갈이; 단식; 분변 미생물
Issue Date
2019-05-08
Citation
Lee, Won Young, et al. 2019. "Faecal microbiota changes associated with the moult fast in chinstrap and gentoo penguins". PLOS ONE, 14(5): 216565-NaN.
Abstract
In many seabirds, individuals abstain from eating during the moult period. Penguins have an intense moult that lasts for weeks, during which they are confined to land. Despite the importance for survival, it is still unclear how the faecal microbiota of Antarctic penguins changes in response to the moult fast. Here, we investigated the faecal microbiota of chinstrap (Pygoscelis antarcticus) and gentoo penguins (Pygoscelis papua) on King George Island, Antarctica. The bacterial community compositions during the feeding and moulting stages were compared for both species using bacterial 16S rRNA gene amplicon on an Illumina MiSeq platform. Our results showed that the moult fast altered the bacterial community structures in both penguin species. Interestingly, the bacterial community composition shifted in the same direction in response to the moult fast but formed two distinct clusters that were specific to each penguin species. A significant increase in bacterial diversity was observed in gentoo penguins, whereas no such change was observed for chinstrap penguins. By analysing the contribution of the ecological processes that determine bacterial community assembly, we observed that processes regulating community turnover were considerably different between the feeding and moulting stages for each penguin. At the phylum level, the relative abundances of Fusobacteria, Firmicutes and Proteobacteria were dominant in chinstrap penguins, and no significant changes were detected in these phyla between the feeding and moulting periods. Our results suggest that moult fast-induced changes in the faecal microbiota occur in both species.
URI
http://repository.kopri.re.kr/handle/201206/9628
DOI
http://dx.doi.org/10.1371/journal.pone.0216565
ISSN
1932-6203
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