Name: Alcaligenes aestus Baumann et al. 1972 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: aes’tus. L. masc. n. aestus (gen. aestus), the periodical flux and reflux or ebb and flow of the sea, the tide; L. masc. n. aestus, of the tide (also as genitive)

Pronunciation, gender: A͡ES-tus, masculine

Type strain: 134; ATCC 27128; CECT 4265; DSM 4739; IAM 12551; LMG 3449; NCIMB 1980; NCMB 1980

Effective publication: Baumann L, Baumann P, Mandel M, Allen RD. Taxonomy of aerobic marine eubacteria. J Bacteriol 1972; 110:402-429.

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: Halomonas aquamarina (ZoBell and Upham 1944) Dobson and Franzmann 1996

Risk group: 2

• Synonyms:

  • Name	Kind
    Deleya aesta (Baumann et al. 1972) Baumann et al. 1983	homotypic synonym, validly published under the ICNP
    Halomonas meridiana James et al. 1990	heterotypic synonym, validly published under the ICNP
    Deleya aquamarina (ZoBell and Upham 1944) Akagawa and Yamasato 1989	heterotypic synonym, validly published under the ICNP
    Alcaligenes faecalis subsp. homari Austin et al. 1981	heterotypic synonym, validly published under the ICNP, distinct rank
    Halomonas aquamarina (ZoBell and Upham 1944) Dobson and Franzmann 1996	heterotypic synonym, validly published under the ICNP
    Alcaligenes aquamarinus (ZoBell and Upham 1944) Hendrie et al. 1974 (Approved Lists 1980)	heterotypic synonym, validly published under the ICNP
    Vreelandella aquamarina (ZoBell and Upham 1944) de la Haba et al. 2024	heterotypic synonym, validly published under the ICNP
    "Achromobacter aquamarinus" ZoBell and Upham 1944	heterotypic synonym, not validly published, basonym of name in Approved Lists
    Halomonas axialensis Kaye et al. 2004	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏲ According to Tindall (2003), this species is a later heterotypic synonym of Vreelandella aquamarina (ZoBell and Upham 1944) de la Haba et al. 2024. Publication: Tindall BJ. The nomenclatural type of the genus Deleya and the consequences of Deleya aesta and Alcaligenes aquamarinus being synonyms. Int J Syst Evol Microbiol 2003; 53:1699-1700.
  • ⏲ According to Tindall (2003), this species is a later heterotypic synonym of "Achromobacter aquamarinus" ZoBell and Upham 1944. Publication: Tindall BJ. The nomenclatural type of the genus Deleya and the consequences of Deleya aesta and Alcaligenes aquamarinus being synonyms. Int J Syst Evol Microbiol 2003; 53:1699-1700.
  • ⏲ According to Tindall (2003), this species is a later heterotypic synonym of Alcaligenes aquamarinus (ZoBell and Upham 1944) Hendrie et al. 1974 (Approved Lists 1980). Publication: Tindall BJ. The nomenclatural type of the genus Deleya and the consequences of Deleya aesta and Alcaligenes aquamarinus being synonyms. Int J Syst Evol Microbiol 2003; 53:1699-1700.
  • ⏲ According to Tindall (2003), this species is a later heterotypic synonym of Deleya aquamarina (ZoBell and Upham 1944) Akagawa and Yamasato 1989. Publication: Tindall BJ. The nomenclatural type of the genus Deleya and the consequences of Deleya aesta and Alcaligenes aquamarinus being synonyms. Int J Syst Evol Microbiol 2003; 53:1699-1700.
  • ⏲ According to Tindall (2003), this species is a later heterotypic synonym of Halomonas aquamarina (ZoBell and Upham 1944) Dobson and Franzmann 1996. Publication: Tindall BJ. The nomenclatural type of the genus Deleya and the consequences of Deleya aesta and Alcaligenes aquamarinus being synonyms. Int J Syst Evol Microbiol 2003; 53:1699-1700.
  • ❗ Alcaligenes aestus 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 Alcaligenes.
  • 😷 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 = "PI". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1, note = "n". — 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 species itself.
  • 🧍 Deleya aesta (Baumann et al. 1972) Baumann et al. 1983, Alcaligenes aquamarinus (ZoBell and Upham 1944) Hendrie et al. 1974 (Approved Lists 1980) and Alcaligenes faecalis subsp. homari Austin et al. 1981 are members of a single species of the genus Deleya Baumann et al. 1983. Akagawa and Yamasato 1989 invoked Rules 23a and 51b of the Bacteriological Code (1976 Revision) and came to the conclusion that the oldest synonym within these three species was Alcaligenes aquamarinus, and, therefore, proposed that the combination Deleya aquamarina be created, and that Deleya aesta be a synonym of Deleya aquamarina. Publication: Akagawa M, Yamasato K. Synonymy of Alcaligenes aquamarinus, Alcaligenes faecalis subsp. homari, and Deleya aesta: Deleya aquamarina comb. nov. as the type species of the genus Deleya. Int. J. Syst. Bacteriol. 1989; 39:462-466.

Parent taxon: Alcaligenes Castellani and Chalmers 1919 (Approved Lists 1980)

Assigned by: Baumann L, Baumann P, Mandel M, Allen RD. Taxonomy of aerobic marine eubacteria. J Bacteriol 1972; 110:402-429.

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Record number: 773002