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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 726-731Heterotrophic Bacterial Community Structure of...

Heterotrophic Bacterial Community Structure of Multistage Biofilters in a Commercial Pufferfish Takifugu rubripes RAS

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Abstract:

The success of a recirculating aquaculture system (RAS) greatly depends on the structure, dynamics and activities of microbial community. Heterotrophic bacteria as the major members play various roles. The heterotrophic bacterial community structure in threestaged biofilters was studied using four different media. 228 isolates belonging to 77species were obtained and affiliated to Gammaproteobacteria, Alphaproteobacteria, Bacteroidetes, Firmicutes, Actinobacteria and Betaproteobacteria. Gammaproteobacteria was the predominant group. The concurrence was found between potential pathogens (Vibrio and Shewanella) and probiotics (Bacillus and Pseudomonas). On the basis of community diversity index, we could infer that differences existed between stages, and the diversity index increased along the biofilters. A comprehensive understanding of microbial community in RAS will be in favor of utilization of microbial resources and optimizing the culture systems' operation.

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Periodical:

Advanced Materials Research (Volumes 726-731)

Pages:

1621-1627

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.726-731.1621

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Online since:

August 2013

Authors:

Zhu Chen, Ying Liu, Liang Zi Liu, Xiao Jing Wang, Zhi Pei Liu, Ying Liu*

Keywords:

Community Structure, Heterotrophic Bacteria, Multistage Biofilters, RAS

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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