scholarly journals Freshwater Recirculating Aquaculture System Operations Drive Biofilter Bacterial Community Shifts around a Stable Nitrifying Consortium of Ammonia-Oxidizing Archaea and Comammox Nitrospira

2017 ◽  
Vol 8 ◽  
Author(s):  
Ryan P. Bartelme ◽  
Sandra L. McLellan ◽  
Ryan J. Newton
Keyword(s):  
Bacterial Community ◽  
Recirculating Aquaculture System ◽  
Ammonia Oxidizing Archaea ◽  
Recirculating Aquaculture ◽  
Aquaculture System ◽  
Community Shifts

Characterizing the structural diversity of a bacterial community associated with filter materials in recirculating aquaculture systems of Scortum barcoo

2012 ◽  
Vol 58 (3) ◽  
pp. 303-310 ◽  
Author(s):  
Peng Zhu ◽  
Yangfang Ye ◽  
Fangfang Pei ◽  
Kaihong Lu
Keyword(s):  
Water Quality ◽  
Bacterial Community ◽  
Clone Library ◽  
Stable Operation ◽  
Recirculating Aquaculture System ◽  
Operation Condition ◽  
Recirculating Aquaculture ◽  
Filter Materials ◽  
Aquaculture System ◽  
Recirculating Aquaculture Systems

The bacterial community structure associated with filter materials in the recirculating aquaculture system of Scortum barcoo was investigated using the 16S rRNA gene clone library method. Preliminary results showed that the clone library constructed from the initial operation condition was characterized by 31 taxa of bacteria belonging to eight phyla including Proteobacteria, Acidobacteria, Firmicutes, Fusobacteria, Sphingobacteria, Bacteroidetes, Verrucomicrobiae, and Actinobacteria. There were 14 taxa of bacteria belonging to four phyla including Proteobacteria, Acidobacteria, Planctomycetacia, and Nitrospirae from the stable operation condition where the water quality was well maintained. Nitrospirae was only found under the stable operation condition in this study. Our results further indicated that Nitrospira was dominated by members of the Nitrospira sp. lineages, with a minor fraction related to Nitrospira moscoviensis and an unknown Nitrospira cluster. These great differences of both diversity and composition between two operation conditions suggested that the composition of the microbial community varied with the degree of water quality in the recirculating aquaculture system of S. barcoo.

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