Porphyromonas spp

From Dog
Porphyromonas spp under electron microscopy[1]

Porphyromonas spp are a ubiquitous carbohydrate-fermenting Gram-negative black-pigmented anaerobic bacteria which are commonly associated with periodontitis in dogs[2].

Species which are pathogenic include:

  • Porphyromonas crevioricanis[3]
  • Porphyromonas cangingivalis[4]
  • Porphyromonas gulae[5][6]
  • Porphyromonas macacae

These pathogens are often cultured from the oral mucosa of dogs[7], where they are associated with plaque formation and gingivitis.

Other dentopathogenic bacteria are also found such as Actinobacillus spp and Eikenella spp.


  1. Science Photo Library
  2. Allaker RP et al (1997) Dental plaque flora of the dog with reference to fastidious and anaerobic bacteria associated with bites. J Vet Dent 14(4):127-130
  3. Dahlén G et al (2012) Predominant bacterial species in subgingival plaque in dogs. J Periodontal Res 47(3):354-364
  4. Riggio MP et al (2011) Molecular identification of bacteria associated with canine periodontal disease. Vet Microbiol 150(3-4):394-400
  5. Senhorinho GN et al (2012) Occurrence and antimicrobial susceptibility of Porphyromonas spp. and Fusobacterium spp. in dogs with and without periodontitis. Anaerobe 18(4):381-385
  6. Yamasaki Y et al (2012) Distribution and molecular characterization of Porphyromonas gulae carrying a new fimA genotype. Vet Microbiol 161(1-2):196-205
  7. Allaker RP et al (1994) Prevalence of Eikenella corrodens and Actinobacillus actinomycetemcomitans in the dental plaque of dogs. Vet Rec 134(20):519-520