Feed types driven differentiation of microbial community and functionality in marine integrated multitrophic aquaculture system

Yale Deng, Fan Zhou, Yunjie Ruan*, Bin Ma, Xueyan Ding, Xiaomei Yue, Wenjun Ma, Xuwang Yin

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

2 Citations (Scopus)

Abstract

Integrated multi trophic aquaculture (IMTA) improves the production of aquatic animals by promoting nutrient utilization through different tropical levels. Microorganisms play an important role in elements cycling, energy flow and farmed-species health. The aim of this study was to evaluate how feed types, fresh frozen fish diet (FFD) or formulated diet (FD), influence the microbial community diversity and functionality in both water and sediment in a marine IMTA system. Preferable water quality, higher animal yields and higher cost efficiency were achieved in the FD pond. Feed types changed the pond bacterial community distribution, especially in the rearing water. The FFD pond was dominated with Cyanobacteria in the water, which played an important role in nitrogen fixation through photosynthesis due to the high nitrogen input of the frozen fish diet. The high carbohydrate composition in the formulated diet triggered higher metabolic pathways related to carbon and lipid metabolism in the water of the FD pond. Sediment had significantly higher microbial diversity than the rearing water. In sediment, the dominating genus, Sulfurovum and Desulfobulbus, were found to be positively correlated by network analysis, which had similar functionality in sulfur transformation. The relatively higher rates of antibiotic biosynthesis in the FFD sediment might be related to the pathogenic bacteria introduced by the trash fish diet. The difference in microbial community composition and metabolic pathways may be associated with the different pathways for nutrient cycling and animal growth performance. The formulated diet was determined to be more ecologically and economically sustainable than the frozen fish diet for marine IMTA pond systems.

Original languageEnglish
Article number95
JournalWater (Switzerland)
Volume12
Issue number1
DOIs
Publication statusPublished - 2020

Keywords

  • Formulated diet
  • Functionality
  • Integrated multitrophic aquaculture
  • Microbial community
  • Sustainability

Fingerprint Dive into the research topics of 'Feed types driven differentiation of microbial community and functionality in marine integrated multitrophic aquaculture system'. Together they form a unique fingerprint.

Cite this