Otariodibacter oris and Bisgaardia genomospecies 1 isolated from infections in Pinnipeds

Mie Johanne Hansen, Mads Frost Bertelsen, Martha Ann Delaney, Vanessa Ashley Fravel, Frances Gulland, Anders Miki Bojesen

Research output: Contribution to journalArticlepeer-review


We document the first associations of two recently described species of Pasteurellaceae bacteria with lesions in wild pinnipeds in rehabilitation. Samples were collected from nine lesions in four California sea lions (Zalophus californianus) and two Pacific harbor seals (Phoca vitulina) during necropsy or admission examinations at a rehabilitation facility in northern California. Seven Pasteurellaceae isolates were identified using phenotypic tests and partial rpoB gene sequencing. Six strains of Otariodibacter oris were isolated from California sea lions. Otariodibacter oris was isolated in pure culture from four abscesses, an affected lymph node, and a bone lesion consistent with osteomyelitis. Otariodibacter oris was also cultured with Arcanobacterium phocae and b-hemolytic streptococci. A pure culture of Bisgaardia genomospecies 1 was obtained from an abscess in a harbor seal. This is the first time, to our knowledge, that O. oris has been associated with infection. Isolation of these bacteria in pure culture from abscesses and osteomyelitis strongly indicates a pathogenic potential of this organism. Likewise, the isolation of Bisgaardia genomospecies 1 in pure culture from an abscess in a harbor seal implies causality.

Original languageEnglish (US)
Pages (from-to)661-665
Number of pages5
JournalJournal of wildlife diseases
Issue number3
StatePublished - Jul 1 2013


  • Bisgaardia
  • California sea lion
  • Harbor seal
  • Infection
  • Otariodibacter oris
  • Pasteurellaceae
  • Pinnipeds

ASJC Scopus subject areas

  • General Medicine


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