Rev. biol. mar. oceanogr. 47(2): 367-371

Nota Científica



Diversity of culturable marine bacteria on the coastline of the central area of San Jorge Gulf, Argentina

Graciela N. Pucci1, Adrián J. Acuña1, Natalia L. Tonin1, María C. Tiedemann1 & Oscar H. Pucci1

1Centro de Estudios e Investigación en Microbiología Aplicada (CEIMA), Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Ruta Provincial Nº1 4 km. Comodoro Rivadavia (CP 9000), Chubut, Argentina

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This study aims to isolate and identify culturable marine bacteria from 4 locations in the San Jorge Gulf. A total of 1,532 strains were isolated using oligotrophic, heterotrophic and hydrocarbon- degrading bacteria media, and identified with reference to bacterial fatty acid methyl ester (FAME) profiles. Gram-negative bacteria were the most abundant, Pseudoalteromonas comprised 17% of the isolated bacteria, followed by Pseudomonas, with 11.14%. The Gram-positive bacteria genera identified were Staphylococcus, Bacillus and Micrococcus. In addition, those bacteria able to degrade hydrocarbons were: Arthrobacter, Dietzia, Acinetobacter, Microbacterium, Micrococcus, Bacillus, Pseudomonas and Pseudoalteromonas.

Key words:  Marine bacterial diversity, fatty acids, sediments, San Jorge Gulf