Name: Aeromonas salmonicida subsp. masoucida Kimura 1969 (Approved Lists 1980)

Category: Subspecies

Proposed as: subsp. nov.

Etymology: ma.so.u.ci’da. N.L. n. Onchorhynchus, masou, a species of fish; L. masc. n. suff. -cida, murderer, killer; from L. v. caedo, to cut or kill; N.L. masc. n. masoucida, Onchorhyncus masou-killer (nominative in apposition)

Pronunciation (Latin), gender: a-e-RO-mo-nas sal-mo-ni-KI-da ma-so-u-KI-da, feminine

Type strain: ATCC 27013; CIP 103210; DSM 21760; IFO 13784; JCM 7873; JCM 8191; JCM 8234; LMG 3782; NBRC 13784

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB680514 Analyse FASTA

Effective publication: Kimura T. A new subspecies of Aeromonas salmonicida as an etiological agent of furunculosis on "Sakuramasu" (Oncorhynchus masou) and Pink Salmon (O. gorbuscha) rearing for maturity. Part 2. On the serological properties. Fish Pathology (Tokyo) 1969; 3:45-52.

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: correct name (and explicitly recommended for medical use)

Risk group: 2

• Notes:
  • 😷 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 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 = 2, note = "PV". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1, note = "t2". — 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.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this subspecies. The name is on LoRN because of the recorded risk group of the species itself.
  • 🧍 Preliminary results of a study by Y. Kosako indicate that the subspecies Aeromonas salmonicida subsp. masoucida Kimura 1969 (Approved Lists 1980) is not a subspecies but only a biovar. See Minute 22. Publication: Holmes B. ICSB, SUBCOMMITTEE ON THE TAXONOMY OF VIBRIONACEAE: Minutes of the meetings, 4 and 7 July 1994, Prague, Czech republic. Int. J. Syst. Bacteriol. 1998; 48:1467-1469. 🇬🇧

Parent taxon: Aeromonas salmonicida (Lehmann and Neumann 1896) Griffin et al. 1953 (Approved Lists 1980)

Assigned by: Kimura T. A new subspecies of Aeromonas salmonicida as an etiological agent of furunculosis on "Sakuramasu" (Oncorhynchus masou) and Pink Salmon (O. gorbuscha) rearing for maturity. Part 2. On the serological properties. Fish Pathology (Tokyo) 1969; 3:45-52.

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Record number: 783330