Species Methanogenium cariaci

Name: Methanogenium cariaci Romesser et al. 1981

Category, proposed as: species, sp. nov.

Etymology: ca.ri’a.ci. N.L. gen. neut. n. cariaci, of Cariaco (sic)

Pronunciation (Latin), gender: me-t^ha-no-GE-ni-um ka-RI-a-ki, neuter

Type strain: ATCC 35093; DSM 1497; JCM 10550; JR1; OCM 49

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: M59130 Analyse FASTA

Effective publication: Romesser JA, Wolfe RS, Mayer F, Spiess E, Walther-Mauruschat A. Methanogenium, a new genus of marine methanogenic bacteria, and characterization of Methanogenium cariaci sp. nov. and Methanogenium marisnigri sp. nov. Arch. Mikrobiol. 1979; 121:147-153.

IJSEM list: Anonymous. Validation list no. 6. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1981; 31:215-218.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Emendations:
  • Maestrojuán et al. 1990 Maestrojuán GM, Boone DR, Xun L, Mah RA, Zhang L. Transfer of Methanogenium bourgense, Methanogenium marisnigri, Methanogenium olentangyi, and Methanogenium thermophilicum to the genus Methanoculleus gen. nov., emendation of Methanoculleus marisnigri and Methanogenium and description of new strains of Methanoculleus bourgense and Methanoculleus marisnigri. Int. J. Syst. Bacteriol. 1990; 40:117-122. 🇺🇸

• Notes:
  • 🥇 Nomenclatural type of the genus Methanogenium Romesser et al. 1981. Publication: Romesser JA, Wolfe RS, Mayer F, Spiess E, Walther-Mauruschat A. Methanogenium, a new genus of marine methanogenic bacteria, and characterization of Methanogenium cariaci sp. nov. and Methanogenium marisnigri sp. nov. Arch. Mikrobiol. 1979; 121:147-153.
  • 😷 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 = 1. — The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 1. — 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 9 times in PubMed until 2026-06-11.

Parent taxon: Methanogenium Romesser et al. 1981

Assigned by: Romesser JA, Wolfe RS, Mayer F, Spiess E, Walther-Mauruschat A. Methanogenium, a new genus of marine methanogenic bacteria, and characterization of Methanogenium cariaci sp. nov. and Methanogenium marisnigri sp. nov. Arch. Mikrobiol. 1979; 121:147-153.

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Record number: 777882