Name: Porphyromonas crevioricanis Hirasawa and Takada 1994

Category: Species

Proposed as: sp. nov.

Etymology: cre.vi.o.ri’ca.nis. N.L. gen. fem. n. crevi, of a crevice (sic); L. gen. neut. n. oris, of the mouth; L. gen. masc./fem. n. canis, of a dog; N.L. gen. masc./fem. n. crevioricanis, of the crevice of a dog’s mouth

Pronunciation (Latin), gender: … kre-wi-o-RI-ka-nis, feminine

Type strain: ATCC 55563; JCM 15906; NUM 402

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB547658 Analyse FASTA

Valid publication: Hirasawa M, Takada K. Porphyromonas gingivicanis sp. nov. and Porphyromonas crevioricanis sp. nov., isolated from beagles. Int J Syst Bacteriol 1994; 44:637-640. 🇯🇵

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 44, part 4 of the IJSB. Int J Syst Bacteriol 1995; 45:199-200.

Nomenclatural status: validly published under the ICNP

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

Risk group: 2

• Synonyms:

  • Name	Kind
    Porphyromonas cansulci Collins et al. 1994	heterotypic synonym, validly published under the ICNP

• Emendations:
  • Sakamoto and Ohkuma 2013 Sakamoto M, Ohkuma M. Porphyromonas crevioricanis is an earlier heterotypic synonym of Porphyromonas cansulci and has priority. Int J Syst Evol Microbiol 2013; 63:454-457. 🇯🇵 Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 63, part 2 of the IJSEM. Int J Syst Evol Microbiol 2013; 63:1581-1583.
    Notes:
    • 🫂 Emendation accompanied by a proposal regarding the synonymy of the species.
  • García-López et al. 2019 Garcia-Lopez M, Meier-Kolthoff JP, Tindall BJ, Gronow S, Woyke T, Kyrpides NC, Hahnke RL, Goker M. Analysis of 1,000 Type-Strain Genomes Improves Taxonomic Classification of Bacteroidetes. Front Microbiol 2019; 10:2083. 🇩🇪 Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.

• Notes:
  • ⏰ According to Sakamoto and Ohkuma (2013), this species is an earlier heterotypic synonym of Porphyromonas cansulci Collins et al. 1994. Publication: Sakamoto M, Ohkuma M. Porphyromonas crevioricanis is an earlier heterotypic synonym of Porphyromonas cansulci and has priority. Int J Syst Evol Microbiol 2013; 63:454-457. 🇯🇵
  • 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 1, note = "animal pathogen - biological class of risk animal: 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2, note = "PV TMP". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2, note = "t". — 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 10 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 risk group of the species itself.

Parent taxon: Porphyromonas Shah and Collins 1988

Assigned by: Hirasawa M, Takada K. Porphyromonas gingivicanis sp. nov. and Porphyromonas crevioricanis sp. nov., isolated from beagles. Int J Syst Bacteriol 1994; 44:637-640. 🇯🇵

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Record number: 784666