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The large intestine hosts the most densely populated microbial ecosystem in the human body. This complex community primarily consists of anaerobic bacteria, with Bacillota (formerly Firmicutes) and Bacteroidota (formerly Bacteroidetes) as the predominant groups. The distribution of these microbes varies along different sections of the large intestine, influenced by local environmental factors such as oxygen availability and nutrient composition.The cecum, located at the beginning of the large...
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Microorganisms colonize various regions of the human body, including the mouth, nasal passages, throat, stomach, intestines, urogenital tract, and skin. The total number of microbial cells is estimated to range from 10¹³ to 10¹⁴—comparable to, or exceeding, the number of human somatic cells. This host–microbiome relationship has led to the conceptualization of humans as supraorganisms, wherein microbial communities perform vital roles in development, immunity,...
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The giraffe (Giraffa camelopardalis) rumen microbiome.

Michael Roggenbuck1, Cathrine Sauer, Morten Poulsen

  • 1Department of Biology, Microbiology, University of Copenhagen, Copenhagen O, Denmark.

FEMS Microbiology Ecology
|August 5, 2014
PubMed
Summary

Giraffe rumens host diverse, previously undescribed bacteria. Microbial communities varied with diet but showed significant unassigned sequences, highlighting novel microbial diversity in wild ruminants.

Keywords:
dietgiraffemicrobiomerumenwild life

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Area of Science:

  • Microbiology
  • Animal Science
  • Ruminant Ecology

Background:

  • Wild ruminants harbor unique microbial communities.
  • Understanding foregut microbial interactions is crucial for ruminant health and function.
  • Previous research indicates a potential for novel microorganisms in wild ruminant digestive systems.

Purpose of the Study:

  • To investigate the microbial community composition in the rumen of wild giraffes.
  • To determine the impact of different diets on giraffe rumen microbial diversity.
  • To identify previously undescribed bacterial taxa within the giraffe rumen ecosystem.

Main Methods:

  • High-throughput sequencing of the 16S rRNA gene was employed.
  • Samples were collected from seven wild-caught giraffes with varying diets.
  • Microbial community diversity was analyzed in both ruminal fluid and solid fractions.

Main Results:

  • Microbial community composition differed based on diet.
  • The phyla Firmicutes and Bacteroidetes were dominant, irrespective of diet.
  • A significant proportion of sequences (up to 21% to phyla, 70% to genus) remained unassigned, indicating novel bacteria.

Conclusions:

  • The giraffe rumen harbors a substantial number of undescribed bacterial species.
  • Diet plays a role in shaping the rumen microbiome, though core phyla remain consistent.
  • Further research is needed to characterize the novel bacteria identified in this study.