Reference Work Entry

The Prokaryotes

pp 709-711

The Genus Capnocytophaga

  • E. R. Leadbetter


Bacteria included in the genus Capnocytophaga typically are aerotolerant anaerobes with a requirement for significant quantities of carbon dioxide (CO2) for initiation of growth—aerobic as well as anaerobic—and with the ability to form thin, spreading colonies (i.e., exhibit surface translocation) on solid media. They are common inhabitants of dental plaque in the oral cavities of mammals, from which they can be isolated in instances of periodontal diseases as well as from healthy individuals (Paster et al., 2001); they are less frequently isolated from lesions resulting from dog and cat bites and from inadvertant oral microbial contamination of open wounds (e.g., Chadha and Brady, 1999; Alexandrakis et al., 2000; Phibbs et al., 2002).

Seven species of the genus are presently recognized (C. ochracea, gingivalis, sputigena, canimorsus, cynodegmi, hemolytica and granulosa) on the basis of several polyphasic analyses including phenotypic trait analy ...

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