Rico Virgen, E.G., R.N., Águila Ramírez, M., Muñoz Ochoa & R., Peña (2024). Potential of bacteria associated with the seahorse Hippocampus reidi for the control of pathogens aquaculture cultures. 4th Biotechnology World Symposium. Cancún, México, octubre 7 - 11, 2024, 76.
Erika Guadalupe Rico Virgen, Ruth Noemí Águila Ramírez 1, Mauricio Muñoz Ochoa 1 y Renato Peña 1
The microbiota present on the skin of seahorses has developed specific physicochemical properties that allow it to inhabit the host and regulate microbial interactions, protecting against pathogens. This competitive process suggests the possibility of using these antagonistic microorganisms as agents for microbial control. From specimens of Hippocampus reidi maintained in culture, mucus samples were collected from the epidermis, from which 16 morphotypes of bacteria were isolated and purified. These morphotypes were cultured in a liquid medium to obtain cell-free supernatants (CFS). They were evaluated for their antimicrobial activity using agar diffusion and microdilution plating techniques against six fish pathogens. It was observed that the SLCs of eight isolates showed antimicrobial activity against Streptococcus iniae, Vibrio anguillarum, V. harveyi, and Photobacterium damselae, with inhibition zones that varied between 12 and 25 mm. The highest percentage of inhibition was recorded with the SLC of the HR14 isolate against S. iniae (74%). These results highlight the potential of H. reidi-associated bacteria. Research continues to identify these specific bacteria and characterize the active compounds responsible for their antimicrobial activity.
Palabras clave: Antimicrobial; biocontrol; Streptococcus
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