Relationships between pond water and tilapia skin microbiomes in aquaculture ponds in Malawi

McMurtrie, Jamie; Alathari, Shayma; Chaput, Dominique L.; Bass, David; Ghambi, Camerson; Nagoli, Joseph; Delamare-Deboutteville, J.; Mohan, C. V.; Cable, Joanne; Temperton, Ben; Tyler, Charles R.

doi:10.1016/j.aquaculture.2022.738367

Cited by 11 publications

(13 citation statements)

References 90 publications

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“…The external surface of fish touched with seawater directly, but the bacterial diversity and components of surrounding seawater were significantly lower than that of the external surface. The same cases had been reported previously (Minniti et al, 2017;Sylvain et al, 2020;Steiner et al, 2021;McMurtrie et al, 2022). The high discrepancy between host-associated and environmental microbiotas suggests that fish surface microbial communities are not simple reflections of the microbial assemblages in their habitat.…”

Section: Microbial Discrepancy Between the External Surface And The E...supporting

confidence: 84%

Mucus-associated microbiotas among different body sites of wild tuna from the South China Sea

Zou

Wu²,

Wei³

et al. 2023

Front. Mar. Sci.

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The mucus-associated symbionts have profound impacts on the pathogen defense, metabolism, and development of aquatic animals. To understand the microbial structure of regional endothermic fish, a total of 52 samples from the skin, oral, gill, and hindgut of wild tuna Thunnus albacares and T. obesus were determined by 16S amplicon sequencing. The results showed the diversity and composition of microbial communities varied in the four different body sites of tunas, with a greater heterogeneity between the external surface and the gut. Phyla Proteobacteria, Firmicutes, Actinobacteria and genus Acinetobacter were found in high relative abundance in all body sites. The other abundant taxa were enriched in different body sites, such as Lactobacillus and Kocuria in the skin and Geobacillus in the gut. The core taxa interacted with each other to different degrees in the four body sites, which may be related to species’ co-evolution and microbial community stability. Finally, the correlation between biomarkers and COG functions highlighted the importance of microbial biomarkers to the host. This work firstly characterized the microbial feature in different body sites of wild tunas, providing a foundational dataset to understand the microbial role in endothermic fish and to find key microbial components beneficial to farmed tunas.

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Section: Microbial Discrepancy Between the External Surface And The E...supporting

confidence: 84%

Mucus-associated microbiotas among different body sites of wild tuna from the South China Sea

Zou

Wu²,

Wei³

et al. 2023

Front. Mar. Sci.

View full text Add to dashboard Cite

show abstract

“…Of all environmental factors assessed in our study (fish species farmed in the ponds, pond location, and season/sampling timepoint), only Upazila correlated with microbial diversity. This supports previous work indicating that geography influences the microbiota composition of aquaculture ponds in Bangladesh (McInnes et al, 2021) and Malawi (McMurtrie et al, 2022). This is also true in freshwater lakes (Yang et al, 2019) and open oceans (Sehnal et al, 2021) where geography is correlated with aquatic microbial diversity.…”

Section: Discussionsupporting

confidence: 90%

The Diversity and Ubiquity of Antibiotic Resistance Genes in Finfish Culture Ponds in Bangladesh

Bell

Thornber

Chaput

et al. 2022

Preprint

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In Bangladesh, fish provide over 60% of animal-source food with 56.2% of this coming from aquaculture produced predominantly in rural freshwater ponds. Increasing demand for fish products is driving intensification and resulting in higher disease prevalence, posing a risk to food security.Biosecurity is often absent in rural aquaculture practices in Bangladesh and antibiotics are commonly used to treat and prevent disease outbreaks. Antibiotics are often administered incorrectly -a key factor associated with the development of antimicrobial resistance (AMR). AMR can be disseminated rapidly within microbial ecosystems via mobile genetic elements, posing a risk for humans and animals infected with AMR pathogens as treatments with antibiotics become ineffective. Early AMR detection and understanding of the spread of antimicrobial resistant genes (ARGs) in rural

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“…As such, the microbial communities of water and skin are closely interconnected, with bacterial taxa found in the surrounding water environment also forming a large composition of the skin microbiota. However, the skin microbiota is uniquely structured with specific taxa enrichment (Boutin et al 2013;McMurtrie et al 2022).…”

Section: Microbiomes Of Surface Mucosa In Tilapiamentioning

confidence: 99%

“…Environmental influences on the skin microbiome are reflected by inherent variability between fish cultured in different environments; however, conserved microbial hallmarks can be seen in skin microbiomes. Almost every published study, regardless of water salinity, has identified Proteobacteria (Pseudomonadota) as the dominant bacterial phyla of fish skin microbiomes, including tilapia (Boutin et al 2013;Chiarello et al 2015;Elsheshtawy et al 2021;Krotman et al 2020;Lokesh and Kiron 2016;McMurtrie et al 2022;Rosado et al 2019;Sultana et al 2022); in particular, this comprises the Gammaproteobacteria class (Chiarello et al 2019;Larsen et al 2015;McMurtrie et al 2022;Reinhart et al 2019;Sylvain et al 2020). Additionally, the phyla Actinobacteria (Actinomycetota) and Bacteroidetes (Bacteroidota) occur widely (Boutin et al 2013;Chiarello et al 2015;Lokesh and Kiron 2016;McMurtrie et al 2022;Reinhart et al 2019).…”

Section: Microbiomes Of Surface Mucosa In Tilapiamentioning

confidence: 99%

Tilapia aquaculture, emerging diseases, and the roles of the skin microbiomes in health and disease

et al. 2023

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Aquaculture is playing an increasingly important role in global food security, especially for low-income and food-deficit countries. The majority of aquaculture production occurs in freshwater earthen ponds and tilapia has quickly become one of the most widely adopted culture species in these systems. Tilapia are now farmed in over 140 countries facilitated by their ease of production, adaptability to a wide range of environmental conditions, fast growth, and high nutritional value. Typically, tilapia have been considered a hardy, disease resilient species; however, the disease is increasing with subsequent threats to the industry as their production is intensified. In this review, we discuss tilapia production, with a focus on Bangladesh as one of the top producing countries, and highlight the problems associated with disease and treatment approaches for them, including the misuse of antimicrobials. We address a key missing component in understanding health and disease processes for sustainable production in aquaculture, specifically the role played by the microbiome. Here we examine the importance of the microbiome in supporting health, focused on the symbiotic microbial community of the fish skin mucosal surface, the abiotic and biotic factors that influence the microbiome, and the shifts that are associated with diseased states. We also identify conserved taxa of skin microbiomes that may be used as indicators of health status for tilapia offering new opportunities to mitigate and manage the disease and optimize environmental growing conditions and farming practices.

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Relationships between pond water and tilapia skin microbiomes in aquaculture ponds in Malawi

Cited by 11 publications

References 90 publications

Mucus-associated microbiotas among different body sites of wild tuna from the South China Sea

Mucus-associated microbiotas among different body sites of wild tuna from the South China Sea

The Diversity and Ubiquity of Antibiotic Resistance Genes in Finfish Culture Ponds in Bangladesh

Tilapia aquaculture, emerging diseases, and the roles of the skin microbiomes in health and disease

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