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61,005 resultsShowing papers similar to Effects of microplastics on Daphnia-associated microbiomes in situ and in vitro
ClearEffects of microplastics on Daphnia -associated microbiomes in situ and in vitro
Researchers examined how microplastics affect the microbiome of Daphnia, a keystone freshwater organism, through both field sampling and controlled laboratory experiments. Using DNA sequencing techniques, they found that microplastic exposure altered the composition of bacterial communities associated with Daphnia. The study suggests that microplastic pollution may disrupt the beneficial microbial relationships that support the health of important freshwater species.
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.
Nanoplastics diversify and reshape Daphnia microbiomes in parasite-infected and uninfected hosts
Scientists exposed water fleas (Daphnia magna) to polystyrene nanoplastics of two sizes, with and without a yeast parasite infection, and analyzed changes in their gut and body microbiomes. The smallest nanoplastics at the highest concentration caused the most dramatic shifts in bacterial communities, with effects that exceeded those caused by the parasite alone. The results suggest that nanoplastic pollution could fundamentally reshape the beneficial microbes that aquatic organisms depend on for their health.
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.
How microplastics influence the health and microbiota of aquatic invertebrates: A review
This review examines how microplastics affect the health and microbiota of aquatic invertebrates, an area that has received less attention than fish studies. Researchers summarize evidence showing that microplastics cause toxicity at biological and molecular levels, alter microbial communities associated with invertebrate hosts, and interact with climate change and other pollutants to produce combined effects. The study highlights significant knowledge gaps and proposes future research directions for understanding microplastic impacts on aquatic ecosystems.
Microplastic Exposure Across Trophic Levels: Effects on the Host-microbiota of Freshwater Organisms
Researchers found that exposure to 1 µm microplastic beads and the pesticide deltamethrin caused carry-over reductions in microbiome diversity and abundance across a three-level freshwater food chain of daphnids, damselfly larvae, and dragonfly larvae.
Microplastic ingestion by Daphnia magna and its enhancement on algal growth
Researchers examined microplastic ingestion by the freshwater zooplankton Daphnia magna and its downstream effects on algal growth, finding that the organisms readily ingested microparticles. The study also observed that microplastic exposure indirectly enhanced algal growth, possibly by reducing grazing pressure, suggesting that plastic pollution could alter freshwater food web dynamics.
Ecotoxicology of microplastics in Daphnia: A review focusing on microplastic properties and multiscale attributes of Daphnia
This review synthesizes research on how microplastics affect Daphnia, a key organism in aquatic food webs, across individual, population, and community levels. Researchers found that the toxicity of microplastics to Daphnia depends heavily on the physical and chemical properties of the particles, and that combined exposure with other pollutants can produce more severe effects. The study highlights Daphnia as an important indicator species for understanding how microplastic pollution cascades through aquatic ecosystems.
The effects of exposure to microplastics and pollutants on the arthropod microbiome
This thesis investigated how microplastics and other pollutants (pesticides, detergents, metals) affect the gut microbiome of freshwater invertebrates. Disruption of the host-microbiome relationship by microplastics could impair immune function and overall health in aquatic organisms that form important parts of the food web.
Combined effects of microplastics and antibiotic-resistant bacteria on Daphnia magna growth and expression of functional genes
Researchers tested the combined effects of microplastics and antibiotic-resistant bacteria on tiny freshwater organisms called Daphnia magna. They found that polystyrene microplastics colonized with resistant Shigella bacteria were ingested and trapped in the organisms' intestines, causing changes in body size, reproduction, and gene expression. The study suggests that microplastics carrying antibiotic-resistant bacteria may pose amplified ecological risks to aquatic food chains.
Effects of Microplastics on Reproduction and Growth of Freshwater Live Feeds Daphnia magna
Researchers found that microplastic exposure negatively affected reproduction and juvenile growth in Daphnia magna, a key freshwater zooplankton species, with effects worsening at higher concentrations and posing risks for aquatic food chains.
Accumulation Kinetics and Gut Microenvironment Responses to Environmentally Relevant Doses of Micro/Nanoplastics by Zooplankton Daphnia Magna
This study tracked how tiny zooplankton (Daphnia magna) accumulate micro and nanoplastics of different sizes and surface charges at environmentally realistic concentrations. The organisms readily consumed all particle types, with larger and positively charged plastics accumulating the most, and the particles disrupted their gut microbiome. Since zooplankton are a key food source for fish, this accumulation could transfer microplastics up the food chain toward humans.
The effect of microplastics on Daphnia fitness – systematic review and meta-analysis.
This meta-analysis pools data from multiple studies to assess how micro and nanoplastic exposure affects Daphnia, a key freshwater organism used to gauge water health. The evidence shows that plastic particles can harm Daphnia reproduction, which is important because these organisms are a foundational part of freshwater food webs that ultimately connect to human food and water sources.
Interaction and transmission of daphnia microbiome to MP-containing aggregates
Researchers created environmentally realistic aquatic aggregates by combining natural particles with micro- and nanoplastics at varying ratios (0-10% MNP by mass) and total suspended solid concentrations (0.1-10 mg/L), then allowed Daphnia magna to interact with the aggregates for 72 hours before analyzing aggregate size and associated bacterial communities via 16S rRNA sequencing. The study investigated whether microplastic-containing aggregates select for distinct microbial communities, including potential pathogens, compared to natural particle aggregates.
The effect of microplastics on Daphnia fitness – systematic review and meta-analysis.
This systematic review and meta-analysis examines how micro and nanoplastic particles affect the health and reproduction of Daphnia, a tiny freshwater organism commonly used as an indicator of water quality. The findings matter because Daphnia sit at the base of many aquatic food chains, so harm to these organisms from plastic pollution can ripple upward through ecosystems and ultimately affect the fish and water we depend on.
Microbiological perspectives on the effects of microplastics on the aquatic environment
This review examines how microplastics interact with microorganisms in aquatic environments, highlighting risks to microbial communities and the potential for microplastics to disrupt ecosystem functions. Microplastics may alter microbial diversity and promote the spread of antibiotic-resistant bacteria.
Effects of microplastics on key reproductive and biochemical endpoints of the freshwater microcrustacean Daphnia magna
Researchers studied how microplastics affect reproduction and biochemistry in the freshwater water flea Daphnia magna, a widely used indicator species. They found that microplastic exposure led to changes in reproductive output and altered key biochemical markers in these small crustaceans. The study suggests that even tiny plastic particles can disrupt important biological functions in freshwater organisms that form the base of aquatic food webs.
Review on the ecotoxicological impacts of plastic pollution on the freshwater invertebrate Daphnia
This review examines the ecotoxicological impacts of plastic pollution on the freshwater invertebrate Daphnia, a widely used model organism. Researchers highlight that microplastics affect Daphnia reproduction, growth, and survival, and that chemicals leaching from plastics may contribute additional toxic effects that transfer through food webs.
The effect of microplastics on the interspecific competition of Daphnia
Researchers investigated how microplastic presence affects interspecific competition between Daphnia species, finding that microplastics can alter competitive outcomes and shift population dynamics between coexisting zooplankton species.
Effects of microplastics on the structure and function of bacterial communities in sediments of a freshwater lake
Researchers examined how microplastics alter the structure and function of bacterial communities in sediments, finding that plastic exposure shifted community composition and reduced overall diversity compared to plastic-free controls. Functional analysis showed impaired denitrification and organic matter decomposition in microplastic-contaminated sediments, indicating ecosystem-level consequences for nutrient cycling.
Nanoplastic-induced microbiome shifts reduce Daphnia fitness and increase parasite reproduction
Scientists found that tiny plastic particles (called nanoplastics) can harm the gut bacteria of small water creatures called Daphnia, making them weaker and more likely to get sick from parasites. This matters because nanoplastics are everywhere in our environment - including our drinking water and food - and they might be disrupting the helpful bacteria in our own bodies too. The study suggests that plastic pollution could be weakening immune systems by damaging the good microbes that help protect us from disease.
The effect of microplastics on Daphnia fitness – Systematic review and meta‐analysis
This systematic review and meta-analysis examines how micro- and nanoplastics affect the health and reproduction of Daphnia, a key freshwater organism used in toxicity testing. The findings confirm that plastic particles can harm these organisms, which is significant because Daphnia are a foundational species in freshwater ecosystems connected to human water supplies.
Direct and indirect ecological impacts of microplastic fibers on host-parasite and host-microbiota interactions
Researchers experimentally tested how polyester microplastic fibers of two sizes affect trematode parasite infection rates and gut microbiome composition in leopard frog tadpoles. Microplastic fibers altered both host-parasite dynamics and microbiota structure in size-dependent ways, demonstrating that plastic fiber pollution has cascading effects on freshwater ecological interactions.
Synergistic adverse effects of microfibers and freshwater acidification on host-microbiota interactions in the water flea Daphnia magna
Researchers investigated how microfiber pollution combined with freshwater acidification affects the water flea Daphnia magna. They found that acidic conditions caused the organisms to ingest more microfibers, leading to reduced reproduction, slower growth, and shifts in the balance of gut bacteria toward more harmful species. The study demonstrates that climate-related water acidification can worsen the biological impacts of microplastic pollution.