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Species Bacteroides microfusus
Name: Bacteroides microfusus Kaneuchi and Mitsuoka 1978 (Approved Lists 1980)
Etymology: mi.cro.fu’sus. Gr. masc. adj. mikros, small (may keep -o); L. masc. n. fusus, a spindle; N.L. masc. n. microfusus, a small spindle (referring to cellular morphology) (nominative in apposition)
Pronunciation (Latin), gender: … mi-kro-FU-sus, masculine
Type strain: ATCC 29728; CCUG 54772; DSM 15922; JCM 2053; NCTC 11190
See detailed strain information at
Conduct genome-based taxonomy at
16S rRNA gene:
AB971798
Analyse
FASTA
Effective publication:
Kaneuchi C, Mitsuoka T. Bacteroides microfusus, a new species from the intestines of calves, chickens, and Japanese quails. International Journal of Systematic Bacteriology 1978; 28:478-481. 
IJSEM list:
Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.
Nomenclatural status: validly published under the ICNP
Taxonomic status: synonym (and not recommended for medical use)
Correct name: Rikenella microfusus (Kaneuchi and Mitsuoka 1978) Collins et al. 1985
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Synonyms:
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Name Kind Rikenella microfusus (Kaneuchi and Mitsuoka 1978) Collins et al. 1985 homotypic synonym, validly published under the ICNP
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Notes:
- ❗ Bacteroides microfusus is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Bacteroides.
- 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — 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 0 times in PubMed until 2025-06-04.
- 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of the genus.
Parent taxon: Bacteroides Castellani and Chalmers 1919 (Approved Lists 1980)
Assigned by:
Kaneuchi C, Mitsuoka T. Bacteroides microfusus, a new species from the intestines of calves, chickens, and Japanese quails. International Journal of Systematic Bacteriology 1978; 28:478-481.
Linking: To permanently link to this page, use https://lpsn.dsmz.de/species/bacteroides-microfususLink copied to clipboard
Record number: 773961
This LPSN page was printed on 2026-03-13 20:51:20