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July 2018 Vol.6 No.6

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Merit Research Journal of Microbiology and Biological Sciences (ISSN: 2408-7076) Vol. 6(6) pp. 069-078, July, 2018

Copyright © 2018 Merit Research Journals

Original Research Article

Dynamics of Functional Diversity of Bacterioplankton in Fishponds and Potential Link to Fish Productivity


Ling Tao1, Jian-Qiang Zhu2, Xiao-Li Li1, Liang Peng1, Cao-Feng Song1, Li-Li Dai1 and Gu Li1*


1Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Hubei Wuhan 430223, China
2Engineering and Research Center on Ecology of Wetland and Agricultural Use, Ministry of Education, Yangtze University,Hubei Jingzhou 434025, China

*Corresponding Author’s E-mail: ligu667@yahoo.com
Tel/Fax: +86 (027) 81780121

Accepted June 20, 2018




This study investigated the community-level physiological profiling (CLPP) of bacterioplankton in yellow catfish (Pelteobagrus fulvidraco) intensive culture ponds during the growing season employing Biolog EcoPlates technology to study the dynamics of functional diversity of bacterioplankton communities and potential link to fish yield. It was found that bacterioplankton communities had significantly different patterns of carbon source utilization during different culture periods and that several indices of carbon source metabolic diversity of bacterioplankton communities tended to decrease significantly as the culture progressed. The McIntosh index of bacterioplankton communities during the mid and later period of the culture exhibited a significantly positive correlation with fish yield, suggesting that pond water with higher microbial metabolic diversity was inclined to have higher fish yield. The bacterioplankton communities with relatively higher rates of utilization for specific carbon sources during the specific month appeared to have a significant correlation with the culture yield under our experimental conditions. Therefore, the present study contributed to understand the physiological function dynamics of bacterioplankton communities and the interactions with fish yield in real-scale intensive yellow catfish culture pond .This finding will help us to integrate the knowledge into routine bacterial community management and culture practices to optimize fish yield.

Keywords: Pond aquaculture, Biolog Ecoplates, Microbial diversity, Culture yield




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