Abstract
A Gram-negative, aerobic, motile and slightly curved rod-shaped bacterium (BFLP-8(T)) was isolated from cutaneous mucus of wild long-snouted seahorses (Hippocampus guttulatus) captured in northwest Spain (Toralla, Galicia). Strain BFLP-8(T) grew at 10-35°C and pH5-9 (optimally at 25°C and pH7.0) and with 1-6% (w/v) NaCl (optimally with 2% NaCl). The predominant respiratory quinone (90%) was ubiquinone with ten isoprene units (Q-10) and the major fatty acids identified were C(18:1) ω7c (54.8% of the total), C(19:0) cyclo ω8c (11.6%), C(16:0) (9.5%), C(18:1) 2-OH (7.1%) and C(16:1) ω11c (6.7%). The G+C content of the DNA was 57.8mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain BFLP-8(T) formed a distinct clade within the family Sneathiellaceae but is not specifically associated with any species in the family. On the basis of phenotypic, chemotaxonomic and phylogenetic data, strain BFLP-8(T) represents a novel species within a new genus, for which the name Oceanibacterium hippocampi gen. nov., sp. nov. is proposed. The type strain is BFLP-8(T) (=CECT 7691(T)=DSM 23444(T)).
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