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1 CIAD, A.C., Mazatlán Unit for Aquaculture, AP. 711 Mazatlán, Sinaloa 82000, Mexico
2 Instituto Cavanilles de Biodiversidad y Biología Evolutiva, Universitat de València, Spain
3 Departamento de Microbiología y Ecología, Universitat de València, Spain
4 Colección Española de Cultivos Tipo (CECT), Universitat de València, Spain
5 Institut de Reçerca i Tecnologia Agroalimentaries, Centre d'Aquicultura, AP 200 Sant Carles de la Rapita 43540, Spain
Correspondence
Bruno Gomez-Gil
bruno{at}ciad.mx
Nine bacterial strains were studied by means of rep-PCR, 16S rRNA gene sequence analysis, DNA–DNA hybridization and physiological characterization. Typing analysis by means of rep-PCR showed that all nine strains were highly homogeneous, with similarities above 94 %. The strains were isolated from the same geographical area (Mazatlán, Sinaloa state, Mexico) and the same type of host (cultured rose snapper, Lutjanus guttatus), although from different individuals and organs. Comparison of the almost-complete 16S rRNA gene sequences of five strains showed that they belonged to the genus Vibrio and are closely related to the type strains of Vibrio brasiliensis and Vibrio hepatarius, with similarity values ranging from 97.9 to 98.1 % and from 97.4 to 97.8 %, respectively. The DNA–DNA hybridization value of strain CAIM 797T with the type strain of V. brasiliensis (CAIM 495T) was 47.5 %, with a reciprocal value of 44.7 %. The main phenotypic features of the strains were in agreement with the phylogenetic and genomic data. The results presented here support the description of a novel species, for which the name Vibrio sinaloensis sp. nov. is proposed, with strain CAIM 797T (=CECT 7298T) as the type strain.
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