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61,005 resultsShowing papers similar to Legacy metal contamination is reflected in the fish gut microbiome in an urbanised estuary
ClearStudy of Heavy Metals and Microbial Communities in Contaminated Sediments Along an Urban Estuary
Researchers studied heavy metal contamination and microbial community composition in estuarine sediments along an urban waterway, finding that urbanization-driven metal accumulation significantly altered microbial diversity and community structure.
Gut microbiota of aquatic organisms: A key endpoint for ecotoxicological studies
This review examines how environmental contaminants including microplastics, pesticides, heavy metals, and pharmaceuticals affect the gut microbiota of aquatic organisms. Researchers highlight that changes in gut bacterial communities can serve as sensitive indicators of pollution exposure and may have downstream effects on host fitness. The study calls for improved methodologies to better link contaminant-induced shifts in gut microbiota to measurable health outcomes in aquatic species.
A fishy gut feeling – current knowledge on gut microbiota in teleosts
This review summarizes what scientists know about the community of bacteria living in fish guts and how diet, environmental conditions, and pollutants shape that community. Microplastics and other pollutants can disrupt the gut microbiome in fish, harming their immune function and overall health. Since fish are a major food source for humans, understanding these effects matters for food safety.
Plastics in our water: Fish microbiomes at risk?
This review examined how microplastics and leached plasticizers affect the gut microbiomes of freshwater and marine fish, summarizing evidence for dysbiosis and reduced microbial diversity and discussing potential consequences for fish immunity, metabolism, and environmental fitness.
Application of intestinal microbiota in marine fish for assessing the toxicity of typical pollutants: a literature review
This review examines how the gut microbiota of marine fish can serve as biomarkers for assessing the toxic effects of ocean pollutants, including microplastics, heavy metals, antibiotics, and petroleum hydrocarbons. The study highlights that changes in key microbial communities in fish intestines reflect environmental contamination levels and could provide valuable indicators for monitoring marine ecosystem health.
Effects of environmental factors on host-microbiota interactions in the guts of aquatic organisms: A review
This review synthesizes how environmental stressors — including microplastics, heavy metals, photoperiod, and aquaculture feed additives — alter gut microbiota in fish and aquatic invertebrates, identifying common patterns of microbial disruption and compromised gut barrier integrity.
Multi-omics association pattern between gut microbiota and host metabolism of a filter-feeding fish in situ exposed to microplastics
Scientists exposed filter-feeding fish to environmentally realistic levels of microplastics and found that the particles reshaped gut bacteria communities, which in turn altered the fish's liver metabolism through changes in amino acid processing. This gut-microbiome-to-organ connection matters because it shows microplastics may affect human health not just through direct toxicity but by disrupting the beneficial bacteria in our digestive systems.
Metagenomic Analysis of the Gastrointestinal Microbiota of Gadus morhua callarias L. Originating from a Chemical Munition Dump Site
Researchers used 16S rRNA metagenomic sequencing to compare gut microbiota of cod from a chemical munitions dump site in the Baltic Sea with those from a non-polluted reference site, finding significantly lower diversity and higher abundance of disease-associated bacterial taxa in dump-site fish. Probiotic taxa including Actinobacteriota were less prevalent in contaminated fish, suggesting chemical warfare agent contamination dysregulates the gut microbiome.
Characteristics of microplastic pollution in golden pompano (Trachinotus ovatus) aquaculture areas and the relationship between colonized-microbiota on microplastics and intestinal microflora
Researchers found that microplastics in golden pompano aquaculture areas colonize with distinct microbial communities that overlap with the fish's gut microbiota, increasing Proteobacteria and decreasing Firmicutes in the intestinal flora of fish living in more contaminated estuarine settings.
Connection between the Gut Microbiota of Largemouth Bass (Micropterus salmoides) and Microbiota of the aquaponics system Environment
Researchers investigated the relationship between gut microbiota composition in largemouth bass and the presence of microplastics in their digestive tracts, finding that microplastic-exposed fish showed distinct microbial community profiles. Certain bacterial taxa associated with plastic degradation were enriched in fish with higher microplastic burdens, suggesting gut microbiota adapt to plastic ingestion.
The Characteristics of Intestinal Bacterial Community in Three Omnivorous Fishes and Their Interaction with Microbiota from Habitats
This study examined the gut bacterial communities of three omnivorous fish species in artificial fishery habitats, comparing them to bacteria in the surrounding water and sediment. Fish gut microbiomes partially reflected the environmental microbiota, suggesting habitat quality affects fish gut health. This is relevant to microplastics because microplastics alter both aquatic microbial communities and fish gut microbiomes.
Impact of polypropylene microplastics and chemical pollutants on European sea bass (Dicentrarchus labrax) gut microbiota and health
Researchers investigated how polypropylene microplastics, alone and combined with chemical pollutants, affect the gut health and microbiome of European sea bass. They found that microplastic ingestion altered the gut microbial community composition and that combined exposure with pollutants amplified the harmful effects. The study suggests that microplastics may serve as carriers for toxic chemicals, compounding their impact on fish health and potentially affecting seafood safety.
Polystyrene microplastics induce gut microbiome and metabolome changes in Javanese medaka fish (Oryzias javanicus Bleeker, 1854)
Researchers found that polystyrene microplastic exposure altered gut microbiome composition and metabolic profiles in Javanese medaka fish, with effects on amino acid and lipid metabolism pathways suggesting microplastics can disrupt gut health in aquatic organisms.
Microplastic Exposure Across Trophic Levels: Effects on the Host Microbiota of Freshwater Organisms
Researchers investigated how microplastic exposure affects the gut bacteria communities of freshwater organisms including fish, invertebrates, and crustaceans. Microplastics—particularly when combined with pesticides—altered gut microbiota composition, which could impair digestion, immunity, and overall health of freshwater species.
Interactions between environmental pollutants and gut microbiota: A review connecting the conventional heavy metals and the emerging microplastics
This review examines how environmental pollutants, including both heavy metals and microplastics, interact with gut bacteria in humans and animals. The authors found that these pollutants can disrupt the balance of gut microbiota, which may contribute to various health problems, and that gut bacteria can also transform pollutants in ways that change their toxicity.
Effects of frying on microplastics load in fish and implications on health
Researchers investigated the effects of polyethylene microplastics on gut microbiota composition in mice fed a high-fat diet, finding that microplastic exposure altered microbial diversity and increased gut permeability. Co-exposure with a high-fat diet amplified metabolic disruption.
Effects of microplastics on trophic parameters, abundance and metabolic activities of seawater and fish gut bacteria in mesocosm conditions
Mesocosm experiments showed that microplastics altered bacterial community structure and metabolic activity in both seawater and fish guts, suggesting that plastic pollution can disrupt microbial ecosystems in the marine environment. The findings raise concerns about how microplastic-driven microbiome changes could affect fish health and broader ecosystem functioning.
Understanding the links between micro/nanoplastics-induced gut microbes dysbiosis and potential diseases in fish: A review
This review examines how microplastics and nanoplastics accumulate in fish intestines and disrupt their gut bacteria, potentially leading to inflammation, immune problems, and metabolic diseases. The disrupted gut microbiome can weaken the intestinal barrier, allowing harmful substances to enter the fish's body. Since fish are a major protein source for billions of people, understanding how microplastics damage fish gut health is important for assessing risks to human food safety.
Multi stress system: Microplastics in freshwater and their effects on host microbiota
This study examined how combined exposure to microplastics and organic chemical pollutants affects freshwater organisms through a multi-stress approach, focusing on gut microbiome changes as an indicator. Microplastic exposure in combination with other pollutants altered microbiome composition more than either stressor alone, with potential consequences for host fitness and disease resistance.
Individual and combined toxicogenetic effects of microplastics and heavy metals (Cd, Pb, and Zn) perturb gut microbiota homeostasis and gonadal development in marine medaka (Oryzias melastigma)
Researchers exposed marine medaka fish to microplastics and heavy metals both individually and in combination to assess their effects on gut bacteria and reproductive development. They found that microplastics alone reduced gut microbial diversity, while the combination with heavy metals increased it and triggered more significant changes in specific bacterial species. The heavy metals were primarily responsible for reproductive disruption, including follicle damage, though the combination with microplastics amplified gut-related effects.
Environmental Cadmium Exposure Perturbs Gut Microbial Dysbiosis in Ducks
Environmental cadmium exposure in ducks was found to perturb gut microbial diversity and community composition, with dysbiosis patterns suggesting that heavy metal contamination in agricultural environments can impair gut health in waterfowl.
Chronic Exposure of Adult Zebrafish to Polyethylene and Polyester-based Microplastics: Metabolomic and Gut Microbiome Alterations Reflecting Dysbiosis and Resilience
Researchers exposed adult zebrafish to polyethylene and polyester microplastics at environmentally relevant concentrations and found significant disruptions to metabolic pathways and gut microbiome composition. Polyethylene primarily affected cell membrane compounds and inflammation-related metabolites, while polyester altered lipid metabolism and gut bacterial interactions. The study reveals that chronic microplastic exposure can cause subtle but meaningful shifts in fish metabolism and gut health, even at low concentrations.
The Role of Danio rerio in Understanding Pollutant-Induced Gut Microbiome Dysbiosis in Aquatic Ecosystems
This review examines how freshwater pollutants—including pesticides, heavy metals, antibiotics, dyes, and microplastics—disrupt gut microbiome composition in zebrafish and other aquatic animals. It highlights the zebrafish model as a key tool for understanding pollutant-driven microbiome dysbiosis and its metabolic consequences.
Microplastic exposure across trophic levels: effects on the host–microbiota of freshwater organisms
Researchers examined how microplastic exposure across trophic levels affects the gut microbiota of freshwater organisms, finding that microplastics alter microbial community composition and that effects can transfer through food web interactions.