Current Microbiology

, Volume 8, Issue 4, pp 231–238

Description ofCampylobacter laridis, a new species comprising the nalidixic acid resistant thermophilicCampylobacter (NARTC) group

  • J. Benjamin
  • S. Leaper
  • R. J. Owen
  • M. B. Skirrow
Article

Abstract

Ten strains of the nalidixic acid-resistant thermophilicCampylobacter (NARTC) group, of which 2 were isolated from human feces, were compared with 12 reference strains representing various species ofCampylobacter. The NARTC strains were a homogeneous group with respect to their cell morphology and 28 physiological and biochemical characters. All were microaerophilic, motile (amphitrichate), gram-negative, curved, S-shaped or helical rods, and representative strains had mean DNA base compositions of 31 to 32 mol % G+C. Distinctive features of the 10 strains were resistance to nalidixic acid and anaerobic growth in the presence of trimethylamine N-oxide hydrochloride (TMAO). The latter feature may account for the common occurrence of NARTC strains in the fecal contents of seagulls. DNA-DNA hybridizations indicated high (≥76%) base sequence relatedness within the group and low (≤15%) relatedness to other species ofCampylobacter. The 10 strains were classified in the genusCampylobacter but they could not be assigned to any previously defined species. Therefore, a new species, with the nameCampylobacter laridis, is proposed for these 10 strains; the type strain is NCTC 11352.

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Copyright information

© Springer-Verlag 1983

Authors and Affiliations

  • J. Benjamin
    • 1
  • S. Leaper
    • 2
  • R. J. Owen
    • 2
  • M. B. Skirrow
    • 1
  1. 1.Worcester Royal InfirmaryWorcesterUK
  2. 2.Central Public Health LaboratoryNational Collection of Type CulturesLondonUK

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