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61,005 resultsShowing papers similar to Differences in gut microbial diversity and composition between growth phenotypes of farmed juvenile sandfish, Holothuria scabra
ClearPhysiological and intestinal microbiota responses of sea cucumber Apostichopus japonicus to various stress and signatures of intestinal microbiota dysbiosis
Scientists tested how six common aquaculture stressors, including high temperature, low salinity, ammonia, and overcrowding, affect the gut health and microbial communities of sea cucumbers. All stressors reduced growth and digestive function while shifting the balance of gut bacteria, with potentially harmful bacteria increasing under several conditions. The study identified specific microbial ratio changes as signatures of gut disturbance, which could be useful markers for monitoring sea cucumber health in aquaculture.
The Structure and Function of Gut Microbiomes of Two Species of Sea Urchins, Mesocentrotus nudus and Strongylocentrotus intermedius, in Japan
This study characterized the gut microbiomes of two sea urchin species important to Japanese marine aquaculture using metagenomic methods, revealing distinct microbial communities linked to habitat and growth conditions. Understanding the microbiome of aquaculture organisms is relevant to their health and food safety, particularly given that environmental contaminants including microplastics can alter gut microbiota.
Seasonal variations in microbial diversity and metabolite profiles of the gut of sea cucumber (Apostichopus japonicus)
Researchers used 16S rRNA sequencing and metabolite profiling to examine how seasonal changes affect the gut microbiome composition and intestinal metabolites of sea cucumber (Apostichopus japonicus) in China. They found that symbiotic microbial communities and their metabolic outputs shifted significantly across seasons, reflecting the influence of changing external environments on this economically important aquaculture species.
Temporal stability and assembly mechanisms of gut microbiota in sea cucumbers response to nanoplastics treatment
Researchers studied how nanoplastic ingestion affects the gut microbiota of sea cucumbers (Apostichopus japonicus), an important aquaculture species. The study found that exposure to nanoplastics at concentrations of 100 and 500 mg/kg caused significant changes in gut microbial community composition after 21 days, suggesting potential impacts on the health of farmed marine organisms.
Differences in Physiological Performance and Gut Microbiota between Deep-Sea and Coastal Aquaculture of Thachinotus Ovatus: A Metagenomic Approach
Researchers compared the physiological performance and gut microbiota of pompano fish raised in deep-sea versus coastal aquaculture environments in China's Beibu Gulf. They found that deep-sea farming produced better growth performance, stronger immune responses, and more diverse intestinal microbial communities. The study suggests that deep-sea aquaculture environments, with lower pollution levels including fewer microplastics, may offer significant advantages for fish health and production quality.
The interplay between host-specificity and habitat-filtering influences sea cucumber microbiota across an environmental gradient of pollution
Researchers studied how pollution levels along a Hong Kong coastline affect the gut and skin microbiomes — communities of bacteria living on and in organisms — of a tropical sea cucumber, finding that the animal maintains its own distinct microbial community even in highly polluted areas. This suggests sea cucumbers have strong internal mechanisms that shape their microbiome independently of the surrounding environment, which may help them survive in contaminated coastal waters.
Adverse effects of polystyrene nanoplastics on sea cucumber Apostichopus japonicus and their association with gut microbiota dysbiosis
Researchers used multiple advanced techniques to study how polystyrene nanoplastics affect sea cucumbers, an important aquaculture species. They found that nanoplastic exposure disrupted the animals' gut microbiome, triggered inflammation, and impaired immune function. The study suggests that nanoplastic pollution in aquaculture environments could harm the health of commercially farmed marine species.
The interplay between host-specificity and habitat-filtering influences sea cucumber microbiota across an environmental gradient of pollution
Researchers examined how environmental pollution gradients influence intra-specific variation in microbiota diversity and structure across skin, gut, sediment, and water communities associated with sea cucumbers. They found that both host-specificity and habitat-filtering interact to shape microbial communities along pollution gradients, with animal-associated microbiota showing distinct patterns compared to environmental communities.
Within-species variation in the gut microbiome of medaka ( Oryzias latipes ) is driven by the interaction of light intensity and genetic background
This study found that gut microbiome composition in medaka fish is shaped by the interaction between genetic background and light intensity, with fishing-like selective pressure reducing bacterial richness under low-light conditions, though this did not affect growth rates.
Behavioral and Physiological Requirements for Artificial Shelters in Juvenile Sea Cucumbers Apostichopus japonicus
Not relevant to microplastics — this study investigates why some juvenile sea cucumbers (Apostichopus japonicus) prefer artificial shelters while others do not, finding that shelter-seeking individuals have higher digestive demands and different gut microbiota compositions.
Potential harmful impacts of micro- and nanoplastics on the health of a tropical sea cucumber, Holothuria leucospilota, evidenced by changes of gut microflora, histology, immune and oxidative indexes
Scientists exposed tropical sea cucumbers to both nano-sized and micro-sized plastic particles and found that both caused gut damage, altered the gut microbiome, triggered oxidative stress, and disrupted immune function. Notably, the smaller nanoplastics had stronger effects than the larger microplastics, and plastic particles were observed accumulating in the gut tissue.
Microbiome differences between wild and aquarium whitespotted eagle rays (Aetobatus narinari)
Researchers compared the gut microbiomes of whitespotted eagle rays living in aquariums versus the wild and found significant differences in bacterial communities, though aquarium rays appeared healthy, suggesting their microbiomes adapt to managed environments without causing obvious harm.
Insights into the Gut Microbiota of the Freshwater Crab Sinopotamon planum across Three Seasons and Its Associations with the Surrounding Aquatic Microbiota
Researchers characterized the gut microbiota of freshwater crab Sinopotamon planum across three seasons, finding seasonal shifts in microbial community composition that correlated with changes in surrounding aquatic microbiota and environmental conditions.
Consumer feces impact coral health in guild-specific ways
Researchers tested the effect of fresh and heat-killed feces from corallivorous and grazer/detritivorous fish on coral health, finding that fresh grazer/detritivore feces caused detrimental effects while corallivore feces did not, implicating live microbiota in grazer feces as the harmful agent. The study revealed that consumer microbiota can impact coral health in guild-specific ways, with bacterial diversity varying across ten fish species reflecting their ecological roles.
Within-species variation in the gut microbiome of medaka (Oryzias latipes) is driven by the interaction of light intensity and genetic background
This paper is not about microplastics; it studies how light intensity and evolutionary history (lineages selected under fishing-like vs. natural mortality) interact to shape gut microbiome diversity and composition in medaka fish.
Impacts of microplastics exposure on mussel (Mytilus edulis) gut microbiota
Researchers exposed marine mussels (Mytilus edulis) to microplastics and analyzed changes to their gut microbiota, finding significant shifts in microbial community composition that could affect digestion, immunity, and overall health.
Effects of different temperatures on growth and intestinal microbial composition of juvenile Eriocheir sinensis
Researchers examined how different water temperatures affect the growth and intestinal microbial composition of juvenile Chinese mitten crabs (Eriocheir sinensis), finding that temperature-driven changes in gut microbiota composition influence crab development.
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.
The effect of chronic microplastic exposure on the growth, biochemical responses, and histological changes of the juvenile sea cucumber Holothuria scabra
Researchers exposed juvenile sea cucumbers to polymethylmethacrylate microplastics over 60 days and observed significant negative effects on growth, biochemical responses, and tissue structure. The study found dose-dependent impacts, with higher microplastic concentrations causing greater reductions in weight gain and more pronounced histological damage to the animals' organs.
Microplastic ingestion by the sandfish Holothuria scabra in Lampung and Sumbawa, Indonesia
Researchers found microplastics in 89% of sandfish sea cucumbers (Holothuria scabra) sampled from Indonesian coastal sites, with fiber shapes and transparent particles predominating, indicating these commercially important invertebrates readily ingest environmental microplastics.
Deciphering the gut microbiome of grass carp through multi-omics approach
Researchers used multiple layers of molecular data (multi-omics) to map the gut microbiome of grass carp, identifying key bacterial functions and potential targets for improving fish gut health — findings that could benefit aquaculture and our understanding of how gut microbes support digestion in fish.
Nanoplastics exposure simplifies the network structure of sea cucumber (Apostichopus japonicus) gut microbiota and improves cluster randomness
Researchers exposed sea cucumbers to nanoplastics and found that the particles significantly reduced the diversity and stability of their gut bacteria, shifting the microbial community toward potentially harmful species. The good news is that after 35 days in clean water, the gut microbiome largely recovered to its pre-exposure state. The study reveals that while nanoplastic exposure disrupts the gut health of marine animals, some recovery is possible once the exposure stops.
Types and Abundance of Microplastics in the Digestive Tract of Cucumbers in Banyak Island, Aceh Singkil
Researchers examined the digestive tracts of sea cucumbers from Banyak Island, Indonesia, identifying microplastic types and quantities ingested by these organisms in a coastal area affected by community plastic waste.
The gut microbial of sea urchin ( Strongylocentrotus intermedius ) under different temperatures: Microbial structure and co-occurrence patterns
Researchers exposed sea urchins to five temperatures ranging from 13 to 25°C and used high-throughput sequencing to show that elevated temperatures increase gut bacterial diversity, shift dominant genera, alter key metabolic pathways, and strengthen deterministic assembly processes, providing mechanistic insight into how warming reshapes invertebrate gut microbiomes.