Data for: Manipulating the phytoplankton regimen has the potential to create a stable bacterioplankton community in a shrimp rearing environment

Published: 04-12-2019| Version 1 | DOI: 10.17632/kcyyj5959b.1
Contributors:
Wen Yang,
Jinyong Zhu,
Cheng Zheng,
Ada Lee,
zhongming zheng,
Kaihong Lu

Description

‘Greenwater’ technology is a routine application in aquaculture to manage rearing environment. However, the regulation effects of phytoplankton regimen of greenwater on the rearing water microflora and rearing shrimps is unclear. To fill this gap, we explore the dynamics of bacterioplankton community and the growth performance of rearing shrimps in two greenwarter systems with different phytoplankton regimens over the whole shrimp rearing period. Our results showed significant differences in the bacterioplankton communities between greenwater with phytoplankton regimens dominated by diatoms (ZQ) and chlorophytes (XS). Specifically, ZQ greenwater harbored abundant pathogenic bacteria affiliated to opportunistic Gammaproteobacteria, while phytoplankton of XS recruited probiotic bacteria affiliated to Rhodobacterales and Nitratireductor. Notably, network interactions comparison revealed that the bacterioplankton communities in XS were more stable than those in ZQ. Additionally, the shrimps reared in XS were healthier and grow faster (p < 0.05) relative to those rearing in ZQ. Furthermore, we screened a Nannochloropsis oculata–bacteria consortium from XS rearing environment with non-pathogenic r-strategic bacteria affiliated to family Rhodobacterales which could prevent opportunistic bacteria affiliated to order Alteromonadales by competitive exclusion, and validated its modulation capability upon bacterioplankton community and predicated interactions though a microcosmic experiment. These findings expand our understanding of the microbial ecology of ‘greenwater’ technology, and offer a frame to identify beneficial algae-bacteria consortia which have a potential to optimize and develop microbial management strategies.

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