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61,005 resultsShowing papers similar to Occurrence of Microplastics in Fish and Shrimp Feeds
ClearMicroplastics contamination in commercial fish meal and feed: a major concern in the cultured organisms
Researchers analyzed commercial fish meal and animal feed samples and found microplastics in all of them, with fish meal containing up to 1,154 particles per kilogram. The contaminated feed is given to farmed fish, shrimp, and chicken, creating a pathway for microplastics to reach humans through the food supply. Feed made from dried fish had higher contamination levels than feed from fresh fish, and the microplastics also carried toxic heavy metals.
Microplastic assessment in aquaculture feeds: Analyzing polymer variability across commercial fishfeeds from three continents
Researchers assessed microplastic contamination in commercial aquaculture feeds, detecting particles across multiple feed types and suppliers and characterizing polymer variability, which may introduce plastics into farmed fish.
Microplastics in fish meals: An exposure route for aquaculture animals
Researchers analyzed fish meal samples from ten major producing countries worldwide and found microplastic contamination in all samples tested, averaging 5.5 particles per gram. Fibres were the most common shape, with cellophane, polypropylene, and PET being the dominant polymer types. The study estimates that aquaculture animals fed contaminated fish meal ingest significant quantities of microplastics, identifying fish meal as an important but previously overlooked exposure route.
Microplastics in Commercial Fish Feed in Bangladesh: An Emergent Risk Factor for Aquaculture
Researchers analyzed 21 commercial fish feed samples from Bangladesh and found microplastics present in all of them, with fibers being the most prevalent form across all feed grades. The contamination levels varied between brands and grades, suggesting inconsistent quality control in feed manufacturing. The findings indicate that commercial fish feed is an overlooked pathway through which microplastics enter aquaculture systems and potentially the human food chain.
Detection and characterisation of microplastics and microfibres in fishmeal and soybean meal
Researchers examined fishmeal and soybean meal used as aquaculture feed ingredients and detected microplastics and semi-synthetic cellulosic microfibers in fishmeal but not in plant-based soybean meal. The findings suggest that animal-based aquaculture feeds represent a route of microplastic contamination for farmed fish.
Microplastic Contamination in Aquafeed Ingredients Used as Protein and Carbohydrate Sources
Researchers analyzed microplastic contamination in common aquafeed ingredients used as protein and carbohydrate sources. They found that poultry by-products had the highest microplastic levels, with polypropylene being a dominant polymer type likely originating from packaging materials. The study identifies a pathway by which microplastics can enter aquaculture food chains through contaminated feed ingredients.
Additives, plasticizers, small microplastics (<100 μm), and other microlitter components in the gastrointestinal tract of commercial teleost fish: Method of extraction, purification, quantification, and characterization using Micro-FTIR
Researchers developed a Micro-FTIR extraction and identification method for small microplastics (under 100 µm) and plastic additives in the gastrointestinal tracts of five commercial Mediterranean fish species, finding species-specific contamination patterns with anchovies and sardines showing the highest microplastic burdens.
Unveiling the Tiny Invaders: A deep dive into microplastics in shrimp – Occurrence, detection and unraveling the ripple effects
This review provides a deep dive into microplastic occurrence in shrimp, covering detection methods and potential ripple effects through the food chain. The study highlights that microplastics smaller than 5 mm are pervasive in marine aquaculture environments and accumulate in commercially important shellfish species consumed by humans.
Microplastic pollution in aquafeed of diverse aquaculture animals
Researchers analyzed commercial aquafeed used for five different farmed aquatic species in China and found microplastics present in all samples. Microfibers were the most common form, with polypropylene as the dominant polymer type, suggesting that feed processing and packaging are the main contamination sources. The findings raise concerns about microplastics entering the human food supply through farmed seafood.
Analysis and inorganic composition of microplastics in commercial Malaysian fish meals
Three Malaysian commercial fish meal brands were analyzed for microplastic content, with 64.3% of extracted particles confirmed as plastics (mainly polyester and polyamide fragments) and trace metal contaminants identified by EDX spectroscopy. The findings indicate that cultured organisms fed these meals could be exposed to microplastics and associated inorganic pollutants.
Evidence of Marine Microplastics in Commercially Harvested Seafood
Researchers assessed microplastic contamination in three commercially available shrimp species purchased from supermarkets in South Australia. They found microplastics present in the digestive tracts of all species examined, with fibers being the most commonly identified type. The findings suggest that commercially harvested seafood represents a potential pathway for human dietary exposure to microplastics.
Microplastic contamination in commercial tilapia feeds: lessons from a developing country
Researchers analyzed commercial tilapia fish feeds from a developing country and found microplastic contamination in every sample tested, with grower feeds containing the highest levels. Fibers made up 85% of the contamination, primarily polypropylene and polyethylene from packaging and processing equipment. The study raises concerns that farmed fish are being exposed to microplastics through their feed, which could ultimately reach human consumers.
Screening of Microplastics in Aquaculture Systems (Fish, Mussel, and Water Samples) by FTIR, Scanning Electron Microscopy–Energy Dispersive Spectroscopy and Micro-Raman Spectroscopies
Researchers screened for microplastics in fish, mussels, and water from aquaculture farms using multiple detection methods. Microplastics were found in both farmed fish and mussels, which are widely sold for human consumption. This study highlights that aquaculture systems are not free from microplastic contamination, meaning farmed seafood, like wild-caught fish, is a potential source of microplastic exposure for people.
Microplastics contamination in fish feeds: Characterization and potential exposure risk assessment for cultivated fish of Bangladesh
Researchers found significant microplastic contamination in commercial fish feeds used in Bangladesh aquaculture, with a single farmed tilapia potentially consuming over 268 microplastic particles over 20 weeks through its feed alone. The microplastics included 12 different polymer types and some had heavy metals like lead attached to their surfaces. Since farmed fish is a major protein source, this feed-to-fish pathway represents a direct route for microplastics to reach human diets.
Occurrence and ecological risk of microplastics in different mariculture feeds
Researchers found microplastics in all 23 types of mariculture (ocean fish-farming) feeds tested, averaging over 5,400 particles per kilogram, with sea cucumber feeds showing the highest contamination. The findings reveal that farmed seafood may be ingesting microplastics not just from the environment but directly from their food supply, raising food safety concerns.
Microplastics in fish meal: Contamination level analyzed by polymer type, including polyester (PET), polyolefins, and polystyrene
Fish meal produced from wild-caught fish was analyzed for microplastic contamination by polymer type, finding widespread contamination including fiber shapes and diverse polymer compositions. The study raised concerns about microplastic transfer into aquaculture and intensive animal farming through fish meal used as a high-protein feed ingredient.
Microplastics in shrimps: a study from the trawling grounds of north eastern part of Arabian Sea
Researchers examined three species of shrimp from trawling grounds in the Arabian Sea and found microplastics in every individual tested, with an average of nearly seven particles per shrimp. Fibers were the most common type of microplastic found, and six different plastic polymers were identified in the shrimps' digestive tracts. The findings confirm that microplastic contamination is widespread in commercially important seafood species, raising questions about potential transfer to human consumers.
Abundance and properties of microplastics found in commercial fish meal and cultured common carp (Cyprinus carpio)
Researchers investigated microplastic contamination in four varieties of commercial fish meal and then tracked the transfer of those particles to cultured common carp fed on the meal. They found microplastics present in all fish meal varieties, predominantly fragments of polypropylene and polystyrene, with particles transferring to the fish gastrointestinal tract and gills. The study highlights fish meal as a previously overlooked pathway by which microplastics can enter aquaculture and potentially the human food supply.
Comparative analysis of microplastic pollution in commercially relevant seafood across different geographical regions
Researchers analyzed microplastic pollution in commercially important seafood species, characterizing particle morphology and polymer composition across species. The study found microplastics in all species sampled, with differences in contamination levels linked to feeding ecology and habitat.
Occurrence and human exposure risk of microplastics in commercially important shrimp species from Northeastern Mediterranean Sea
Researchers examined three commercially important shrimp species from the Northeastern Mediterranean Sea and found microplastics in their digestive organs, primarily polyethylene and polypropylene fibers smaller than 500 micrometers. Smaller shrimp tended to have more ingested microplastics relative to their body weight. The study estimates that people who regularly eat these shrimp could be consuming hundreds of microplastic particles per year, highlighting the need for protective measures.
Temporal variability of microplastics in shrimp (Litopenaeus vannamei), feed, water and sediments of coastal and inland culture ponds
This study tracked microplastic contamination in farmed shrimp, their feed, water, and pond sediment across 12 shrimp farms in India over a four-month growing period. Microplastics were found in over 93% of shrimp samples, with feed identified as the primary source of contamination. Since shrimp are one of the most widely consumed seafood products globally, these findings raise concerns about microplastic exposure for consumers.
A comparison of microplastic contamination in freshwater fish from natural and farmed sources
Researchers compared microplastic contamination in farmed Nile tilapia and two wild-caught native freshwater fish species from Colombia, analysing stomach, gill, and flesh tissues using micro-FTIR spectroscopy. Fragments were the dominant microplastic type across all species and tissues, and contamination was found in farmed as well as wild fish, indicating that both aquaculture and natural water environments contribute to microplastic exposure in freshwater fish.
Microplastic contamination in commercial fish feeds: A major concern for sustainable aquaculture from a developing country
All commercial fish feed samples tested in Bangladesh were contaminated with microplastics, containing between 500 and 2,200 particles per kilogram. The most common plastics found were polyethylene and PVC, which fall into high-risk categories for toxicity. This is concerning because microplastics in fish feed enter farmed fish that people eat, creating a direct pathway for human exposure through aquaculture products.
Microplastics in fish and fishmeal: an emerging environmental challenge?
Researchers found that commercial fishmeal, which is used in animal and fish feed, contains about 124 microplastic particles per kilogram, potentially more than the original fish it was made from. This suggests that the manufacturing process may add extra microplastics to the final product. Through marine aquaculture alone, over 300 million microplastic particles could be released into the ocean annually via fishmeal, creating a cycle where microplastics contaminate both farmed and wild seafood that people eat.