Name: Megamonas rupellensis Chevrot et al. 2008

Category: Species

Proposed as: sp. nov.

Etymology: ru.pel.len’sis. M.L. fem. adj. rupellensis, referring to La Rochelle, the site of isolation of the type strain

Pronunciation, gender: ru-pel-LEN-sis, feminine

Type strain: CIP 109788; DSM 19944; FM1025

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: EU346729 Analyse FASTA

Valid publication: Chevrot R, Carlotti A, Sopena V, Marchand P, Rosenfeld E. Megamonas rupellensis sp. nov., an anaerobe isolated from the caecum of a duck. Int J Syst Evol Microbiol 2008; 58:2921-2924.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 58, part 12 of the IJSEM. Int J Syst Evol Microbiol 2009; 59:452-453.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.16925 (N = 4).
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🎓 Name mentioned 7 times in PubMed until 2025-06-04.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded pathogenicity of other species in the genus.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Mukherjee S, Seshadri R, Varghese NJ, Eloe-Fadrosh EA, Meier-Kolthoff JP, Goker M, Coates RC, Hadjithomas M, Pavlopoulos GA, Paez-Espino D, et al. 1,003 reference genomes of bacterial and archaeal isolates expand coverage of the tree of life. Nat Biotechnol 2017; 35:676-683.

Parent taxon: Megamonas Shah and Collins 1983

Assigned by: Chevrot R, Carlotti A, Sopena V, Marchand P, Rosenfeld E. Megamonas rupellensis sp. nov., an anaerobe isolated from the caecum of a duck. Int J Syst Evol Microbiol 2008; 58:2921-2924.

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Record number: 787077