Bacterial communities and predicted nitrogen metabolism of heterotrophic‐ and probiotic‐based biofilms used for super‐intensive indoor shrimp culture

2020 ◽  
Vol 52 (1) ◽  
pp. 334-344
Author(s):  
Ángel Martín Ortiz‐Estrada ◽  
Marcel Martínez‐Porchas ◽  
Luis Rafael Martínez‐Córdova ◽  
Francisco Vargas‐Albores ◽  
Armando Burgos‐Hernandéz ◽  
...  
2019 ◽  
Vol 11 ◽  
pp. 279-290 ◽  
Author(s):  
X Hu ◽  
G Wen ◽  
W Xu ◽  
Y Xu ◽  
H Su ◽  
...  

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
PALLAVI BALIGA ◽  
PUNEETH THADOORU GOOLAPPA ◽  
MALATHI SHEKAR ◽  
S.K. GIRISHA ◽  
RAMESH K.S. ◽  
...  

The biofloc system is an ecologically sustainable shrimp culture system. The conglomerates of beneficial bacteria, algae and protozoa in pond water serve as a water quality management system and as a feed additive to the shrimps. This study aimed to characterise the microbial communities associated with the biofloc pond water and the surface of Penaeus vannamei Boone, 1931, reared in it using the Illumina Miseq sequencing technology. The multiple alpha diversity measures indicated the shrimp surface samples to be richer in diversity than the pond water samples. Analysis of the bacterial community revealed that Proteobacteria, Bacteroidetes, Planctomycetes and Cyanobacteria formed the principal phyla. There was a shift in the relative abundance of bacterial communities at each time point. The operational taxonomic units (OTU) analyses revealed that 18.38 % OTUs were shared by the pond water samples, the shrimp surface samples shared 29.35 % at the three different time points. PICRUST analysis revealed that the bacterial communities in the biofloc rearing water, and shrimp surface, were likely involved in intensive microbial metabolism and core housekeeping functions. The information generated will help understand the bacterial community composition associated with optimal water quality and shrimp health in a biofloc culture system.


2018 ◽  
Vol 9 ◽  
Author(s):  
Zidan Liu ◽  
Linglin Qiuqian ◽  
Zhiyuan Yao ◽  
Xin Wang ◽  
Lei Huang ◽  
...  

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7318 ◽  
Author(s):  
Ze Ren ◽  
Xiaodong Qu ◽  
Wenqi Peng ◽  
Yang Yu ◽  
Min Zhang

In river-lake systems, sediment and water column are two distinct habitats harboring different bacterial communities which play a crucial role in biogeochemical processes. In this study, we employed Phylogenetic Investigation of Communities by Reconstruction of Unobserved States to assess the potential functions and functional redundancy of the bacterial communities in sediment and water in a eutrophic river-lake ecosystem, Poyang Lake in China. Bacterial communities in sediment and water had distinct potential functions of carbon, nitrogen, and sulfur metabolisms as well as phosphorus cycle, while the differences between rivers and the lake were inconspicuous. Bacterial communities in sediment had a higher relative abundance of genes associated with carbohydrate metabolism, carbon fixation pathways in prokaryotes, methane metabolism, anammox, nitrogen fixation, and dissimilatory sulfate reduction than that of water column. Bacterial communities in water column were higher in lipid metabolism, assimilatory nitrate reduction, dissimilatory nitrate reduction, phosphonate degradation, and assimilatory sulfate reduction than that of sediment bacterial communities. Furthermore, the variations in functional composition were closely associated to the variations in taxonomic composition in both habitats. In general, the bacterial communities in water column had a lower functional redundancy than in sediment. Moreover, comparing to the overall functions, bacterial communities had a lower functional redundancy of nitrogen metabolism and phosphorus cycle in water column and lower functional redundancy of nitrogen metabolism in sediment. Distance-based redundancy analysis and mantel test revealed close correlations between nutrient factors and functional compositions. The results suggested that bacterial communities in this eutrophic river-lake system of Poyang Lake were vulnerable to nutrient perturbations, especially the bacterial communities in water column. The results enriched our understanding of the bacterial communities and major biogeochemical processes in the eutrophic river-lake ecosystems.


RSC Advances ◽  
2017 ◽  
Vol 7 (89) ◽  
pp. 56317-56327 ◽  
Author(s):  
Xiao-Yan Fan ◽  
Jing-Feng Gao ◽  
Kai-Ling Pan ◽  
Ding-Chang Li ◽  
Hui-Hui Dai

Dynamics of bacterial communities and nitrogen metabolism genes in a full-scale WWTP as revealed by Illumina sequencing and PICRUSt.


Aquaculture ◽  
2019 ◽  
Vol 500 ◽  
pp. 107-117 ◽  
Author(s):  
Francisco Vargas-Albores ◽  
Luis Rafael Martínez-Córdova ◽  
Teresa Gollas-Galván ◽  
Estefanía Garibay-Valdez ◽  
Maurício Gustavo Coelho Emerenciano ◽  
...  

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