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Vibrio navarrensis sp. nov., a Species from Sewage

¹Laboratoire de Microbiologie, Université de Bordeaux I, avenue des Facultés, F-33405 Talence
²Unité des Entérobactéries, Institut National de la Santé et de la Recherche Médicale Unité 199, Institut Pasteur, F-75724 Paris Cedex 15
³France and Instituto de Salud Publica de Navarra, Pamplona, Spain

^* Corresponding author.

ABSTRACT

A group of 11 strains, mostly isolated from sewage water in the Province of Navarra, Spain, were found to constitute a DNA relatedness group which is 2 to 39% related to 23 species of the genus Vibrio and 2 to 3% related to two Aeromonas species. Phenotypically, these strains have all of the properties that define the genus Vibrio. However, they differ from the previously described species by three or more properties. The strains are negative for arginine, ornithine, and lysine decarboxylase activities and the Voges-Proskauer test and are unable to utilize putrescine, gluconate, glucuronate, and histidine. They utilize and produce acid from sucrose and grow at 40°C. All strains grow in the presence of 0.5% (wt/vol) NaCl, and seven strains grow weakly in peptone water lacking NaCl. The group of strains which we studied can also be differentiated from other Vibrio species by fatty acid content. The G + C ratio of the DNA is 45 to 47 mol%. The name Vibrio navarrensis sp. nov. is proposed for these strains; strain 1397-6 (= CIP 103381) is the type strain.