Article · Wikipedia archive · Last revised Jun 15, 2026

Bisgaardia

Bisgaardia is a genus of Gram-negative, facultatively anaerobic bacteria in the family Pasteurellaceae. The genus was first described in 2011 following the isolation of Bisgaardia hudsonensis from marine mammals, including narwhals and beluga whales. A second species, Bisgaardia miroungae, was later described from the oral cavity of a northern elephant seal.

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Jun 15, 2026
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Bisgaardia
Scientific classification Edit this classification
Domain: Bacteria
Kingdom: Pseudomonadati
Phylum: Pseudomonadota
Class: Gammaproteobacteria
Order: Pasteurellales
Family: Pasteurellaceae
Genus: Bisgaardia
Foster et al. 20111
Type species
Bisgaardia hudsonensis1
Species

Bisgaardia hudsonensis1
Bisgaardia miroungae2

Bisgaardia is a genus of Gram-negative, facultatively anaerobic bacteria in the family Pasteurellaceae. The genus was first described in 2011 following the isolation of Bisgaardia hudsonensis from marine mammals, including narwhals (Monodon monoceros) and beluga whales (Delphinapterus leucas).1 A second species, Bisgaardia miroungae, was later described from the oral cavity of a northern elephant seal (Mirounga angustirostris).2

Etymology

The genus name Bisgaardia honors Danish microbiologist Morten Bisgaard for his contributions to the taxonomy of the family Pasteurellaceae.1

Characteristics

Bisgaardia species are characterized by the following features:12

  • Gram-negative
  • Rod-shaped or coccoid cells
  • Non-motile
  • Facultatively anaerobic
  • Oxidase-positive and catalase-positive

Colonies are typically small, non-haemolytic, and greyish on blood agar.

Habitat and isolation

Bisgaardia species have been isolated from the oral cavity and respiratory tract of marine mammals, including narwhals, beluga whales, and northern elephant seals.12

Species

Recognized species within the genus Bisgaardia include:

  • Bisgaardia hudsonensis (type species)1
  • Bisgaardia miroungae2

Significance

Members of the genus are mainly associated with marine mammals, and their identification contributes to the understanding of the microbial ecology of these hosts and host-specific adaptation within the family Pasteurellaceae.12

See also

See also

References

References

  1. Foster, G.; Barrett, R.; Ebenso, I.; Ross, H.M.; Christensen, H. (2011). "Bisgaardia hudsonensis gen. nov., sp. nov., isolated from a narwhal (Monodon monoceros) and a Beluga whale (Delphinapterus leucas), with reclassification of [Pasteurella] trehalosi as Bibersteinia trehalosi gen. nov., comb. nov". International Journal of Systematic and Evolutionary Microbiology. 61 (12): 2831–2837. doi:10.1099/ijs.0.026005-0.
  2. Hansen, M. J.; Bertelsen, M. F.; Christensen, H.; Olsen, A. B.; Bisgaard, M. (2015). "Bisgaardia miroungae sp. nov., isolated from the oral cavity of a northern elephant seal (Mirounga angustirostris) and emended description of the genus Bisgaardia". International Journal of Systematic and Evolutionary Microbiology. 65 (5): 1655–1660. doi:10.1099/ijs.0.065060-0.
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