Characterization of the Bacterial Community in the Sediment of a Brackish Lake with Oyster Aquaculture

Leon, Sheila Mae S. Santander-De; Okunishi, Suguru; Kihira, Masaki; Nakano, Miyo; Nuñal, Sharon N.; Hidaka, Masayasu; Yoshikawa, Takeshi; Maeda, Hiroto

doi:10.4265/bio.18.29

Cited by 5 publications

(3 citation statements)

References 35 publications

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“…Diversity of the benthic microbial community in Shenzhen Bay significantly increases when oysters are present, as has been reported previously [17,47], and Proteobacteria has been identified as a dominant phylum [48]. In our study, Chloroflexi was also among the most abundant phyla, after Proteobacteria.…”

Section: Discussionsupporting

confidence: 87%

Assembly of a Benthic Microbial Community in a Eutrophic Bay with a Long History of Oyster Culturing

Song

et al. 2021

Microorganisms

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The introduction of oysters to a waterbody is an efficient method for decreasing levels of eutrophication. Oysters affect sedimental environments and benthic microbes via their roles in nutrient cycling. However, little is known about how long-term oyster culturing affects benthic microbial community assembly. In the present study, top and bottom sediments from an oyster-culture area and non-culture area, in a eutrophic bay with a long history of oyster culturing, were obtained for environmental parameter measurement and microbe identification. Deterministic and stochastic processes in microbial community assembly were assessed. In particular, keystone species identification through network analysis was combined with measured environmental parameters to determine the factors related to community assembly processes. Our results suggest that oyster culturing relates to greater variation in both biological and non-biological sediment profiles. In benthic communities, Proteobacteria and Chloroflexi were the most abundant phyla, and community compositions were significantly different between sample groups. We also found that community assembly was more affected by deterministic factors than stochastic ones, when oysters were present. Moisture, or water content, and pH were identified as affecting deterministic and stochastic processes, respectively, but only water content was a driver associated with oyster culturing. Additionally, although keystone species presented a similar pattern of composition to peripheral species, they responded to their environments differently. Furthermore, model selection, fitting keystone species to community assembly processes, indicates their role in shaping microbial communities.

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Section: Discussionsupporting

confidence: 87%

Assembly of a Benthic Microbial Community in a Eutrophic Bay with a Long History of Oyster Culturing

Song

et al. 2021

Microorganisms

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“…As a key part of global biogeochemical cycles, sulfur cycling mediated by sulfate reduction and sulfur oxidation plays a critical role in nutrient metabolism processes (Li et al ., 2018). Sulfur compounds are important oxidants or reductants for microbial respiration in sediments, which are mainly catalysed by SRB and SOB (Santander‐De Leon et al ., 2013). On the one hand, dissimilatory sulfate reduction mediated by SRB is the dominant anaerobic mineralization pathway of organic matter degradation in sediments (Watanabe et al ., 2013), which consequently release hydrogen sulfide simultaneously into ecosystems (Tian et al ., 2017).…”

Section: Introductionmentioning

confidence: 99%

Fish growth enhances microbial sulfur cycling in aquaculture pond sediments

Zhang

Zheng

et al. 2020

Microbial Biotechnology

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Microbial sulfate reduction and sulfur oxidation are vital processes to enhance organic matter degradation in sediments. However, the diversity and composition of sulfate-reducing bacteria (SRB) and sulfur-oxidizing bacteria (SOB) and their environmental driving factors are still poorly understood in aquaculture ponds, which received mounting of organic matter. In this study, bacterial communities, SRB and SOB from sediments of aquaculture ponds with different sizes of grass carp (Ctenopharyngodon idellus) were analysed using high-throughput sequencing and quantitative real-time PCR (qPCR). The results indicated that microbial communities in aquaculture pond sediments of large juvenile fish showed the highest richness and abundance of SRB and SOB, potentially further enhancing microbial sulfur cycling. Specifically, SRB were dominated by Desulfobulbus and Desulfovibrio, whereas SOB were dominated by Dechloromonas and Leptothrix. Although large juvenile fish ponds had relatively lower concentrations of sulfur compounds (i.e. total sulfur, acid-volatile sulfide and elemental sulfur) than those of larval fish ponds, more abundant SRB and SOB were found in the large juvenile fish ponds. Further redundancy analysis (RDA) and linear regression indicated that sulfur compounds and sediment suspension are the major environmental factors shaping the abundance and community structure of SRB and SOB in aquaculture pond sediments. Findings of this study expand our current understanding of microbial driving sulfur cycling in aquaculture ecosystems and also provide novel insights for ecological and green aquaculture managements.

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“…Reports of studies on microorganisms in aquaculture have mainly been confined to the composition of microbial community in culture water (Zhao et al, ), sediment (Santander‐De Leon et al, ) and shrimp intestine (Li et al, ; Liu et al, ; Zhang et al, ). Cardona and colleagues reported that rearing‐water bacterial communities influenced the microbiota of shrimp intestine (Cardona et al, ).…”

Section: Introductionmentioning

confidence: 99%

Effects of biological water purification grid on microbial community of culture environment and intestine of the shrimpLitopenaeus vannamei

et al. 2019

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Biological water purification grid (BWPG), a type of biofilm, could increase aquaculture production by improving the growth of shrimp and culture environment. In this study, the microbial community composition and diversity of water, sediment and shrimp intestine were analysed using the Illumina Miseq high‐throughput sequencing technique. Installation of BWPG did not only increase the dissolved oxygen, pH and decreased inorganic nutrients, but also increased shrimp body length by 5.39% and weight by 16.35%. Furthermore, it was found that the microbial community diversity of water and shrimp intestine in test pond with BWPG was higher than that of control pond without BWPG. Cyanobacteria, Bacillus and Lactococcus were enriched in the test pond with BWPG. However, Rhodobacter was mainly identified in the test pond. It thus seems to suggest that the application of BWPG in shrimp culture pond enhanced the microbial species richness, types of species and proportion of beneficial bacteria in culture environment as well as shrimp intestine. The results from this study will therefore provide some scientific basis for the improvement and development of shrimp aquaculture.

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Characterization of the Bacterial Community in the Sediment of a Brackish Lake with Oyster Aquaculture

Cited by 5 publications

References 35 publications

Assembly of a Benthic Microbial Community in a Eutrophic Bay with a Long History of Oyster Culturing

Assembly of a Benthic Microbial Community in a Eutrophic Bay with a Long History of Oyster Culturing

Fish growth enhances microbial sulfur cycling in aquaculture pond sediments

Effects of biological water purification grid on microbial community of culture environment and intestine of the shrimpLitopenaeus vannamei

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