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IN
Journal article
Streptomyces sp as a Biocontrol of Vibriosis on Larvae of Macrobrachium rosenbergii (de Man) Prawns
I Wayan Desi Bintari RETNO KAWURI Anak Agung Gde Raka Dalem
Volume : 34 Nomor : 1 Published : 2017, April
Journal of Biolological and Chemical Research
Abstrak
Vibriosis is a limiting factor on production of M. rosenbergii (de Man) prawn hachlings. An alternative control of vibriosis can be undertaken through a biological pathways by using Streptomyces bacteria. Ten isolates of Streptomyces spp. were isolated in this research from rhizosphere of mangrove of Rhizophora spp. Three isolates namely Streptomyces sp.1, Streptomyces sp.3 and Streptomyces sp.4 could inhibit the growth of V. anguillarum (in vitro). Streptomyces sp.1 could inhibit the growth V. anguillarum best with diameter of inhibition of 21.03±1.42 mm. Filtrates of Streptomyces sp.1 could also inhibit V. anguillarum (in vitro) with MIC value of 10%. Aplication of Streptomyces sp.1 culture could give significant different impacts (p<0.05) on the percentage of survival (SR) of prawn larvae that had been infected by V. anguillarum compared to the control. Treatment of Streptomyces sp.1 culture could also significantly (p<0.05) reduce the total population of Vibrio on the maintenance media compared to the control. Key words: Streptomyces sp., Vibrio anguillarum, Macrobrachium rosenbergii (de Man), Prawns, Vibriosis and Biocontrol Agent