Volume 70
Characterization of Cultivable Bacteria Associated to the Coral Porites astreoides in Guadeloupe Island and Demonstration of the Metabolic Activity of Isolated Strains
Authors
Arkam,S;C.Zatylny-Gaudin;P.-J.Lopez;Y.Bouchon-Navaro;C.Bouchon;M.René-Trouillefou Download PDF Open PDF in BrowserOther Information
Date: November, 2017
Pages: 344
Event: Proceedings of the Seventy Annual Gulf and Caribbean Fisheries Institute
City: Merida, Yucatan
Country: México
Abstract
Cultivable bacteria associated to the coral Porites astreoides, a dominant species in the Caribbean reefs, was studied in order to characterize beneficial bacteria for its health. A total of 224 bacterial strains were isolated by microbial culture. P. astreoides cultivated bacteria showed a predominance of Vibrionaceae (associated with coral tissue and mucus) and Bacillus (associated with sediment and seawater around coral colonies). Metabolic tests (antibiogram and antimicrobial tests) were applied to these bacterial strains. Twenty-four of them presented a high sensitivity to four tested antibiotics (oxytetracycline, penicillin, streptomycin and ampicillin). In parallel, pure clones of Photobacterium rosenbergii (C91 and C70 strains), Pseudomonas plecoglossicida (C89 strain), and Vibrio vulnificus (F11 strain) inhibited the growth of V. splendidus, a pathogen of the oyster Crassostrea gigas, suggesting a possible synthesis of antimicrobial metabolites by these bacteria. These results are consistent with the coral probiotic hypothesis established by Reshef et al. (2006), as well as the recent term « Beneficial Microorganisms for Coral » proposed by Peixoto et al. (2017).