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Int J Syst Evol Microbiol 58 (2008), 1169-1175; DOI  10.1099/ijs.0.65352-0
© 2008 International Union of Microbiological Societies

Aeromonas aquariorum sp. nov., isolated from aquaria of ornamental fish

A. J. Martínez-Murcia1, M. J. Saavedra1,2, V. R. Mota1,2, T. Maier3, E. Stackebrandt4 and S. Cousin4

1 Molecular Diagnostics Center (MDC), Biomolecular Technologies S.L. and Universidad Miguel Hernández, E-03300 Orihuela (Alicante), Spain
2 Department of Veterinary Sciences, CECAV-University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
3 Bruker Daltonik GmbH, Permoser Strasse 15, D-04318 Leipzig, Germany
4 DSMZ – Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH, Inhoffenstr. 7b, D-38124 Braunschweig, Germany

Correspondence
A. J. Martínez-Murcia
ammurcia{at}mdc-bt.com

During a survey to determine the prevalence of Aeromonas strains in water and skin of imported ornamental fish, 48 strains presumptively identified as Aeromonas were isolated but they could not be identified as members of any previously described Aeromonas species. These strains were subjected to a polyphasic approach including phylogenetic analysis derived from gyrB, rpoD and 16S rRNA gene sequencing, DNA–DNA hybridization, MALDI-TOF MS analysis, genotyping by RAPD and extensive biochemical and antibiotic susceptibility tests in order to determine their taxonomic position. Based on the results of the phylogenetic analyses and DNA–DNA hybridization data, we describe a novel species of the genus Aeromonas, for which the name Aeromonas aquariorum sp. nov. is proposed, with strain MDC47T (=DSM 18362T =CECT 7289T) as the type strain. This is the first Aeromonas species description based on isolations from ornamental fish.

Abbreviations: RAPD, randomly amplified polymorphic DNA

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain MDC47T is EU085557. Strains MDC259, MDC302 and MDC442 show an identical sequence.

Details of strain origins and sequence accession numbers, the antibiotic resistance profile of the novel group of strains and a MALDI-TOF MS-based dendrogram are available as supplementary material with the online version of this paper.






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