Bacterioplankton response to nitrogen and dissolved organic matter produced from salmon mucus

Molina, Verónica; Fernández, Camila

doi:10.1002/mbo3.1132

Cited by 12 publications

(6 citation statements)

References 37 publications

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“…Aquaculture releases organic matter into the water column through excretion, faecal pellets, and uneaten food. Additionally, in fish culture, fish epithelium mucus is continuously released, and it can cause rapid modifications in microbial assemblages and stimulate organic matter and nutrient cycling in areas influenced by aquaculture (Molina and Fernández 2020).…”

Section: Resultsmentioning

confidence: 99%

Planktonic bacteria in white shrimp ( Litopenaeus vannamei ) and channel catfish ( Letalurus punetaus ) aquaculture ponds in a salt‐alkaline region

Zhao

Guan

et al. 2021

Letters Applied Microbiology

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Aquaculture in salt‐alkaline regions is encouraged in China, and culture of many aquatic species has been introduced into these areas. In this study, we cultured two species, white shrimp (Litopenaeus vannamei) and channel catfish (Letalurus punetaus) separately in aquaculture ponds in a salt‐alkaline region in northwest China and assessed the impacts of the aquaculture operations on the planktonic bacterial community in the culture ponds. Culture of both species decreased the planktonic bacterial diversity and altered the bacterial community structure in the aquaculture ponds compared with the source water. Among the 10 dominant bacterial phyla, 8 were significantly correlated with environmental parameters; the exception was Actinobacteriota, the most dominant phylum, and Firmicutes. Proteobacteria and Bacteroidota abundances showed significant positive correlations with alkalinity, whereas Patescibacteria, Cyanobacteria, Planctomycetota, and Verrucomicrobiota abundance were positively correlated with salinity. Linear regression analysis showed that alkalinity was positively correlated with bacterial beta diversity and salinity was negatively correlated with that. In addition, white shrimp aquaculture significantly lowered the alkalinity, which suggests that culture of this species in inland salt‐alkaline regions is a potential dealkalization solution.

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Section: Resultsmentioning

confidence: 99%

Planktonic bacteria in white shrimp ( Litopenaeus vannamei ) and channel catfish ( Letalurus punetaus ) aquaculture ponds in a salt‐alkaline region

Zhao

Guan

et al. 2021

Letters Applied Microbiology

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“…4). This suggests strong dependence of the bacterial community on organic matter derived from phytoplankton (Molina et al, 2020). Bacterial carbon estimated based on abundance value increased significantly during monsoon season and showed a positive correlation with primary productivity measurement (Table 1).…”

Section: Influence Of Seasonal Primary Productivity On the Bacterial ...mentioning

confidence: 85%

Variations in bacterial community at Chlorophyll Maximum (C-Max) depths along the west coast of India due to seasonal changes in the primary productivity

Parab

Manohar

Ghose

2023

Preprint

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An increase in primary productivity is recorded annually during the southwest monsoon season along the west coast of India, an important upwelling zone. The influence of the seasonal variations in the in-situ primary productivity on the bacterial dynamics and community structure was explored during the non-monsoon and productive monsoon seasons. In the monsoon season, distinct upwelling signals and a significant, positive correlation of bacterial carbon (p < 0.01) with primary productivity was observed. Bacterial diversity was also assessed in the chlorophyll maxima depths during both seasons based on metagenomics analysis. In the non-monsoon season, genera such as Idiomarina, Salinimonas, Marinobacter of Proteobacteria and Bacillus and Lactobacillus of Firmicutes were dominant. These major bacterial genera are shown through CCA to play an important ecological role. They are possibly responsible for the increased heterotrophic activity recorded through predicted functional gene profiles in this season. In the monsoon season, increased abundance in the autotrophic Cyanobacteria community and its photosynthetic activity was recorded in the gene profiles. Higher diversity of heterotrophic phyla such as Bacteroidetes, Actinobacteria and a few Candidatus phyla and changes in the diversity of Proteobacteria with a representation of Alteromonas, SAR86 clade and OM60 (NOR5) were also observed. These results highlight the bacterial dynamics associated with seasonal variations in primary productivity.

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“…Ecogroup 1 MAGs were discriminated from Ecogroup 2 by the presence of gene pathways to mineralize the abundant amino acids found in this environment. Experimentally amending seawater with fish mucus was shown to trigger rapid microbial mineralization, as evidenced by a rapid increase in ammonium 33 , demonstrating the microbial response to the components of mucus. Ecogroup 1 also had an overrepresentation of genes linked with motility and chemotaxis, suggesting this group is important in the physical establishment of the microbial community, as seen in plant-root systems 34 and coral mucus 35 .…”

Section: Discussionmentioning

confidence: 96%

Emergent community architecture despite distinct diversity in the global whale shark (Rhincodon typus) epidermal microbiome

Doane,

Reed,

McKerral

et al. 2023

Sci Rep

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Microbiomes confer beneficial physiological traits to their host, but microbial diversity is inherently variable, challenging the relationship between microbes and their contribution to host health. Here, we compare the diversity and architectural complexity of the epidermal microbiome from 74 individual whale sharks (Rhincodon typus) across five aggregations globally to determine if network properties may be more indicative of the microbiome-host relationship. On the premise that microbes are expected to exhibit biogeographic patterns globally and that distantly related microbial groups can perform similar functions, we hypothesized that microbiome co-occurrence patterns would occur independently of diversity trends and that keystone microbes would vary across locations. We found that whale shark aggregation was the most important factor in discriminating taxonomic diversity patterns. Further, microbiome network architecture was similar across all aggregations, with degree distributions matching Erdos–Renyi-type networks. The microbiome-derived networks, however, display modularity indicating a definitive microbiome structure on the epidermis of whale sharks. In addition, whale sharks hosted 35 high-quality metagenome assembled genomes (MAGs) of which 25 were present from all sample locations, termed the abundant ‘core’. Two main MAG groups formed, defined here as Ecogroup 1 and 2, based on the number of genes present in metabolic pathways, suggesting there are at least two important metabolic niches within the whale shark microbiome. Therefore, while variability in microbiome diversity is high, network structure and core taxa are inherent characteristics of the epidermal microbiome in whale sharks. We suggest the host-microbiome and microbe-microbe interactions that drive the self-assembly of the microbiome help support a functionally redundant abundant core and that network characteristics should be considered when linking microbiomes with host health.

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Bacterioplankton response to nitrogen and dissolved organic matter produced from salmon mucus

Cited by 12 publications

References 37 publications

Planktonic bacteria in white shrimp ( Litopenaeus vannamei ) and channel catfish ( Letalurus punetaus ) aquaculture ponds in a salt‐alkaline region

Planktonic bacteria in white shrimp ( Litopenaeus vannamei ) and channel catfish ( Letalurus punetaus ) aquaculture ponds in a salt‐alkaline region

Variations in bacterial community at Chlorophyll Maximum (C-Max) depths along the west coast of India due to seasonal changes in the primary productivity

Emergent community architecture despite distinct diversity in the global whale shark (Rhincodon typus) epidermal microbiome

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