Unique bacterial communities associated with components of an artificial aquarium ecosystem and their possible contributions to nutrient cycling in this microecosystem

Zhou, Jun Shi; Cheng, Jian; Li, Xue Dong; Li, Yan Hong

doi:10.1007/s11274-022-03258-9

Cited by 3 publications

(2 citation statements)

References 45 publications

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“…Stenotrophomonas bacteria are plant endophytes or rhizosphere-and river sediment-linked microorganisms (Assis et al, 2017). Genus Alpinimonas is a member of the phylum Actinobacteria but its function remained unknown (Zhou et al, 2022). Reportedly, certain Rhodococcus species breakdown chitin (Sun et al, 2014).…”

Section: Composition Of Intestinal Microbiota At Genus Levelmentioning

confidence: 99%

Dynamic effects of short-term exercise on muscle texture and gut flora in the hybrid (Megalobrama amblycephala♀ × Ancherythroculter nigrocauda♂)

Wei

Zhang

et al. 2022

Front. Mar. Sci.

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Fillet texture plays a significant role in consumer acceptance, which heavily influenced by exercise according to previous studies. “Xianfeng No. 2”, a novel hybrid of Megalobrama amblycephala (M. amblycephala) (♀) and Ancherythroculter nigrocauda (A. nigrocauda) (♂), with characteristics of quick growth, good disease resistance, and anti-stress capability, is one of an important aquaculture fish species in China, however, the ways to improve fillet quality in this species remains unknown. In this study, a short-term exercise trial (0-16d), hematoxylin and eosin (H&E) staining, and texture analysis were carried out to determine the effects of exercise on muscle cellularity and texture. Furthermore, 16S rRNA analysis was performed to determine the impacts of exercise on the intestinal microbiota. Compared with non-exercised group (0d), exercised groups showed influences in muscle cellularity (decreased muscle fiber diameter and increased muscle fiber density) and improvements in muscle texture (increased hardness, cohesiveness, gumminess, and chewiness). In addition, 16S rRNA sequencing analysis exhibited that short-term exercise could significantly increase the community richness and diversity, as well as alter the composition of gut microflora in this hybrid species. At the level of phylum, the relative richness of Proteobacteria, Firmicutes, Bacteroidetes, and Fusobacteria changed remarkably after short-term exercise. At the level of genus, the relative richness of Pseudomonas, Acinetobacter, Stenotrophomonas, Alpinimonas, Rhodococcus, Shewanella, Brevundimonas changed significantly, suggested that short-term swimming exercise might increase intrinsic antimicrobial resistance and promote denitrification capacity of this hybrid species. Furthermore, a LEfSe analysis of intestinal microflora communities illustrated that Pseudomonas and MNG7 may be utilized to distinguish between exercised and non-exercised fish. Our research, collectively, found an effective way to improve fillet texture by exercise, revealed the impacts of exercise on the intestinal microbiota, further expanded our knowledge of fish under exercise.

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Section: Composition Of Intestinal Microbiota At Genus Levelmentioning

confidence: 99%

Dynamic effects of short-term exercise on muscle texture and gut flora in the hybrid (Megalobrama amblycephala♀ × Ancherythroculter nigrocauda♂)

Wei

Zhang

et al. 2022

Front. Mar. Sci.

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“…is noteworthy. Flavobacterium is known for its role in nutrient cycling and has been previously identified in freshwater ecosystems [35]. Its abundance in these areas might indicate specific ecological functions, possibly related to the organic matter degradation or nitrogen cycle in these river segments.…”

Section: Discussionmentioning

confidence: 99%

Unveiling the Microbiome Landscape: A Metagenomic Study of Bacterial Diversity, Antibiotic Resistance, and Virulence Factors in the Sediments of the River Ganga, India

Rout,

Tripathy,

Dixit

et al. 2023

Antibiotics

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The global rise in antibiotic resistance, fueled by indiscriminate antibiotic usage in medicine, aquaculture, agriculture, and the food industry, presents a significant public health challenge. Urban wastewater and sewage treatment plants have become key sources of antibiotic resistance proliferation. The present study focuses on the river Ganges in India, which is heavily impacted by human activities and serves as a potential hotspot for the spread of antibiotic resistance. We conducted a metagenomic analysis of sediment samples from six distinct locations along the river to assess the prevalence and diversity of antibiotic resistance genes (ARGs) within the microbial ecosystem. The metagenomic analysis revealed the predominance of Proteobacteria across regions of the river Ganges. The antimicrobial resistance (AMR) genes and virulence factors were determined by various databases. In addition to this, KEGG and COG analysis revealed important pathways related to AMR. The outcomes highlight noticeable regional differences in the prevalence of AMR genes. The findings suggest that enhancing health and sanitation infrastructure could play a crucial role in mitigating the global impact of AMR. This research contributes vital insights into the environmental aspects of antibiotic resistance, highlighting the importance of targeted public health interventions in the fight against AMR.

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Impact of Arthrospira maxima Feed Supplementation on Gut Microbiota and Growth Performance of Tilapia Fry (Oreochromis niloticus)

Rojas-Villalta,

Gómez-Espinoza,

Guillén-Watson

et al. 2024

Fishes

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Microalgae are promising as prebiotics in aquaculture. Arthrospira maxima has potential nutritional value but is poorly studied. We assessed A. maxima feed supplementation in tilapia fry and evaluated its effect on growth performance and gut microbiota. Fish were cultivated in ponds under 0%, 5%, 10%, and 15% A. maxima inclusion treatments. Growth parameters and biomass proximate analysis were assessed. A meta-amplicon analysis was performed on the gut microbiota using DADA2 and PICRUST2 for functional prediction. Among treatments, the 5% supplementation group seemed to present no negative effect on growth parameters and did not compromise the nutritional quality of tilapia fry biomass. Microbial composition was characterized by Cetobacterium, Pseudomonas and Aeromonas genera, and a predominance of beneficial metabolic pathways. Microbiota of tilapia fry fed with A. maxima showed unique genera with reported beneficial functions in tilapia. The abundance of potential pathogenic taxa was significantly decreased in supplementation treatments, possibly related to valuable compounds of A. maxima. The inclusion of the microalgae supported the stability of the microbiota, favoring the growth of commensal species. This seems to have an effect on decreasing the presence of pathogenic genera in the gastrointestinal tract. Overall, our work proposes 5% feed inclusion of A. maxima to be the most suitable for tilapia fry aquaculture to maintain production rates while improving general health.

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Unique bacterial communities associated with components of an artificial aquarium ecosystem and their possible contributions to nutrient cycling in this microecosystem

Cited by 3 publications

References 45 publications

Dynamic effects of short-term exercise on muscle texture and gut flora in the hybrid (Megalobrama amblycephala♀ × Ancherythroculter nigrocauda♂)

Dynamic effects of short-term exercise on muscle texture and gut flora in the hybrid (Megalobrama amblycephala♀ × Ancherythroculter nigrocauda♂)

Unveiling the Microbiome Landscape: A Metagenomic Study of Bacterial Diversity, Antibiotic Resistance, and Virulence Factors in the Sediments of the River Ganga, India

Impact of Arthrospira maxima Feed Supplementation on Gut Microbiota and Growth Performance of Tilapia Fry (Oreochromis niloticus)

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