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

Gender: 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

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 full TRBA 466 classification is: risk group = 2, note = "t".

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