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Exclusion of V ibrio spp. by an antagonistic marine actinomycete S treptomyces rubrolavendulae M56
Author(s) -
Augustine Deepthi,
Jacob Jimly C,
Philip Rosamma
Publication year - 2016
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.12746
Subject(s) - biology , vibrio , penaeus monodon , microbiology and biotechnology , shrimp , streptomyces , antibiotics , bacteria , fishery , genetics
A marine actinomycete S treptomyces rubrolavendulae M56 isolated from the sediments of Bay of Bengal and displaying biogranulation property was used for the study. The strain showed antagonistic property against vibrios, the opportunistic pathogens in aquaculture. The efficacy of the biogranules of actinomycete M56 in competitive exclusion of V ibrio spp. was tested both in vitro and in vivo . S treptomyces rubrolavendulae M56 biogranules could significantly exclude the pathogenic V ibrio spp. in co‐culture experiments ( in vitro ). In vivo exclusion of V ibrio spp. in a P enaeus monodon postlarval rearing system was evaluated by treatment of the rearing water with biogranules of S . rubrolavendulae M56. The experiments proved that S . rubrolavendulae M56 biogranules could reduce the pathogenic V ibrio spp., while maintaining total heterotrophic bacterial count. Therefore, the actinomycete biogranules (M56) can be used as a promising alternative to antibiotics in the shrimp larval production system which is often affected by vibriosis.