ISSN: 0973-7510

E-ISSN: 2581-690X

Research Article | Open Access
Azrin N.A.R.1, Yuzine E.1, Ina-Salwany M.Y.1,2 and Murni Karim1,2*
1Department of Aquaculture, Faculty of Agriculture, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
2Laboratory of Marine Biotechnology, Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.
J Pure Appl Microbiol, 2019, 13 (2): 923-931 | Article Number: 5624
Received: 09/04/2019 | Accepted: 24/05/2019 | Published: 28/06/2019
Abstract

In this study, Bacillus amyloliquefaciens strain L11 was used as potential probiont in preliminary in vivo assay using Artemia and blue crab juveniles as final host. Strain L11 at 108 CFU mL-1 was found able to penetrate into gnotobiotic Artemia as early as 6h exposure. The survival rate of Artemia incubated with strain L11 at concentration of 106 CFU ml-1 and challenged with V. harveyi was 62 ± 1%. The numbers of Vibrios in Artemia were reduced at the end of the challenge assay. The in vivo assay using blue crab juveniles, demonstrated that strain L11 at 106 CFU mL-1 showed significant survival (42 ± 1 %) compared with group challenged with V. harveyi with no probiont added (12 ± 1 %) after five days of exposure. Strain L11 also able to reduce the number of Vibrios and increased the weight of the juveniles.

Keywords

Bacillus amyloliquefaciens, Artemia nauplii, blue crab juveniles, Vibrio harveyi.

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© The Author(s) 2019. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.