Name: Pasteurella caecimuris Lagkouvardos et al. 2016

Category: Species

Proposed as: sp. nov.

Etymology: cae.ci.mu’ris. N.L. neut. n. caecum, caecum (can be noun or adjective); L. gen. masc./fem. n. muris, of a mouse; N.L. gen. masc./fem. n. caecimuris, from the caecum of a mouse

Pronunciation, gender: ka͡e-ki-MU-ris, feminine

Type strain: AA-424-CC-1; DSM 28627; KCTC 52216

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: KR364783 Analyse FASTA

Effective publication: Lagkouvardos I, Pukall R, Abt B, Foesel BU, Meier-Kolthoff JP, Kumar N, Bresciani A, Martinez I, Just S, Ziegler C, et al. The Mouse Intestinal Bacterial Collection (miBC) provides host-specific insight into cultured diversity and functional potential of the gut microbiota. Nat Microbiol 2016; 1:16131.

IJSEM list: Oren A, Garrity GM. Validation list no. 172. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2016; 66:4299-4305.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Rodentibacter caecimuris (Lagkouvardos et al. 2016) Li 2024

• Synonyms:

  • Name	Kind
    Rodentibacter caecimuris (Lagkouvardos et al. 2016) Li 2024	homotypic synonym, validly published under the ICNP
    Rodentibacter heylii Adhikary et al. 2017	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Li (2024), this species is an earlier heterotypic synonym of Rodentibacter heylii Adhikary et al. 2017. Publication: Li MS. Rodentibacter caecimuris comb. nov., arising from the heterotypic synonymy between Pasteurella caecimuris Lagkouvardos et al. 2016 and Rodentibacter heylii Adhikary et al. 2017. Int J Syst Evol Microbiol 2024; 74:6279.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Göker M. Notification list. Notification that new names and new combinations have appeared in volume 74, part 2 of the IJSEM. Int J Syst Evol Microbiol 2024; 74:6301.
  • ❗ Pasteurella caecimuris 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 Pasteurella.
  • 🎓 Name mentioned 2 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. This name is not taxonomically suspended any more (but still isn't preferred) in favour of Rodentibacter heylii Adhikary et al. 2017. Publication: Adhikary S, Nicklas W, Bisgaard M, Boot R, Kuhnert P, Waberschek T, Aalbaek B, Korczak B, Christensen H. Rodentibacter gen. nov. including Rodentibacter pneumotropicus comb. nov., Rodentibacter heylii sp. nov., Rodentibacter myodis sp. nov., Rodentibacter ratti sp. nov., Rodentibacter heidelbergensis sp. nov., Rodentibacter trehalosifermentans sp. nov., Rodentibacter rarus sp. nov., Rodentibacter mrazii and two genomospecies. Int J Syst Evol Microbiol 2017; 67:1793-1806. Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 67, part 6 of the IJSEM. Int J Syst Evol Microbiol 2017; 67:3137-3139.

Parent taxon: Pasteurella Trevisan 1887 (Approved Lists 1980)

Assigned by: Lagkouvardos I, Pukall R, Abt B, Foesel BU, Meier-Kolthoff JP, Kumar N, Bresciani A, Martinez I, Just S, Ziegler C, et al. The Mouse Intestinal Bacterial Collection (miBC) provides host-specific insight into cultured diversity and functional potential of the gut microbiota. Nat Microbiol 2016; 1:16131.

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Record number: 793536