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INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY logo International Journal of Systematic and Evolutionary Microbiology

Volume 75, Issue 3

sp. nov. isolated from the gastric fluid of a spotted dolphin () No Access

Abstract

sp. (OM1, OM4 and OM7) novel strains were isolated from the gastric fluid of a spotted dolphin (). These strains were phenotypically and genotypically characterized, and compared with known species of the genus . All isolated strains hydrolysed urea and metabolized arginine, but did not produce acid from glucose. All strains were propagated using pleuropneumonia-like organisms medium supplemented with serum and urea under aerobic and anaerobic atmospheric conditions at 37 °C. Transmission electron microscopy revealed a typical mollicute cellular morphology. Analysis of the 16S rRNA gene sequence indicated that the most closely related, validly named type strain was ATCC 43346 (89.4% similarity). The average nucleotide identity and digital DNA–DNA hybridization values among strain OM1 and closely related species were lower than the accepted thresholds for describing novel prokaryotic species at the genomic level. Based on the genomic, phenotypic and phylogenetic properties, the strains represent a novel species of the genus , for which the name sp. nov. with type strain OM1 (=DSM 116106=JCM 39153) is proposed. The genomic G+C content and draft genome sizes of the type strain were 31.7% and 889 711 bp, respectively.

  • Received:
  • Accepted:
  • Published Online:
Keyword(s): cetacean , dolphin , forestomach and Ureaplasma
Funding
This study was supported by the:
  • Japan science society (Award 2021-5043)
    • Principal Award Recipient: TakaoSegawa
  • Japan Society for the Promotion of Science London (Award 23K05386)
    • Principal Award Recipient: TakaoSegawa
  • Japan Society for the Promotion of Science London (Award 20K15598)
    • Principal Award Recipient: TakaoSegawa
  • Japan Society for the Promotion of Science London (Award 17J00949)
    • Principal Award Recipient: TakaoSegawa
© 2025 The Authors
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2025-03-11
2025-12-07

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Ureaplasma ceti sp. nov. isolated from the gastric fluid of a spotted dolphin (Stenella attenuata)
Int J Syst Evol Microbiol 75, 006712 (2025); https://doi.org/10.1099/ijsem.0.006712
/content/journal/ijsem/10.1099/ijsem.0.006712
/content/journal/ijsem/10.1099/ijsem.0.006712
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