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61,005 resultsShowing papers similar to Contaminant Risk and Social Vulnerability Associated with Crustacean Shellfish Harvest in the Highly Urbanized San Diego Bay, USA
ClearMicroplastic in bivalves of an urbanized Brazilian estuary: Human modification, population density and vegetation influence
Researchers measured microplastic contamination in oysters, clams, and mussels from a heavily urbanized estuary in Brazil, finding that industrial and port activities were stronger predictors of contamination than population density. Clams accumulated the most microplastics, and the study highlights how shellfish from polluted coastal areas can serve as indicators of the microplastic levels humans may be exposed to through seafood.
Microplastic pollution in wild populations of decapod crustaceans: A review
Researchers reviewed the occurrence and characteristics of microplastics found in wild populations of decapod crustaceans including crabs and shrimps. They found that fibrous microplastics smaller than 1 mm were the most commonly detected type, and that edible portions generally contained fewer microplastics than non-edible parts. The review highlights the importance of understanding microplastic contamination in commercially valuable crustaceans for both ecological and food safety assessments.
The Presence, Abundance and Characteristics of Microplastics in some Crustaceans Species: Blue swimmer crab (Portunus armatus), Banana prawn (Penaeus merguiensis) and in Molluscs: Bivalve mollusc oyster (Amiantis umbonella) and Razor shell (Solen roseomaculatus) on Bandar Abbas City Shores, Southern Iran
Microplastic abundance and characteristics were assessed in four shellfish and crustacean species collected from five sites along the shores of Bandar Abbas, Iran on the Persian Gulf. Microplastics were detected in all four species - blue swimmer crab, banana prawn, oyster, and razor shell - with variation linked to site industrialization and urbanization levels.
Ingestion and polymeric risk assessment of microplastic contamination in commercially important brachyuran crab Portunus sanguinolentus
Researchers examined microplastic contamination in a commercially important crab species from three fishing harbors in India and found plastics in every location sampled. The crabs contained an average of 0.67 microplastic particles per gram, with polyethylene and polystyrene among the most common types, and pollution levels rated as very high risk at all sites. Since these crabs are widely eaten, the findings suggest that seafood consumers may be regularly ingesting microplastics.
Comparative study on the microplastics abundance, characteristics, and possible sources in yellow clams of different demographic regions of the northwest coast of India
Researchers measured microplastics in yellow clams collected from urban and rural coastal sites along northwest India, finding some of the highest contamination levels ever recorded globally — averaging 91 microplastic particles per individual clam. Clams from heavily populated areas showed worse health scores, suggesting microplastic exposure may be directly harming shellfish that people eat.
Environmental risk of microplastics in a Mexican coastal lagoon ecosystem: Anthropogenic inputs and its possible human food risk
Researchers found extremely high microplastic concentrations in a Mexican coastal lagoon, with levels hundreds of thousands of times above those in other protected areas. Fishing and urban activities were the main sources, contributing polyethylene and PET fragments. The study estimated that a single serving of locally harvested oysters could expose a person to over 800 microplastic particles.
Source and risk assessment of heavy metals and microplastics in bivalves and coastal sediments of the Northern Persian Gulf, Hormogzan Province
Researchers assessed heavy metal contamination and microplastic distribution in coastal sediments and edible bivalves from the northern Persian Gulf in Hormozgan Province. They found varying levels of both pollutant types across sampling sites, with proximity to industrial and urban areas correlating with higher contamination. The study provides a risk assessment indicating that combined exposure to heavy metals and microplastics through seafood consumption in the region warrants monitoring.
Distribution of Microplastics in Coastal Waters and Their Implications for the Marine Food Chain
This study investigated microplastic distribution in three coastal zones in Indonesia—urban, industrial, and conservation—and examined implications for marine food chain transfer. Industrial areas showed highest contamination, and shellfish contained higher microplastic burdens than finfish, suggesting trophic transfer risk differs by feeding strategy.
A systematic review on microplastic contamination in marine Crustacea and Mollusca of Asia: Current scenario, concentration, characterization, polymeric risk assessment, and future Prospectives
This systematic review documented microplastic contamination in shellfish and crustaceans across Asia, finding 79 species affected. Since these seafood species are widely consumed, the presence of microplastics — especially polyethylene and polypropylene — in their tissues represents a direct route of human exposure through diet.
Eating Near the Dump: Identification of Nearby Plastic Hotspot as a Proxy for Potential Microplastic Contamination in the Norwegian Lobster (Nephrops norvegicus)
Researchers found that proximity to marine plastic waste hotspots was correlated with higher microplastic ingestion in Norwegian lobster (Nephrops norvegicus), establishing the first direct spatial link between macroplastic dump sites and microplastic contamination in benthic organisms.
Spatial heterogeneity of microplastic pollution and associated emerging contaminants in tropical estuarine environments: Novel insights into distribution, bioavailability, and ecological risk
Scientists found tiny plastic particles in water, mud, and seafood like shellfish and crabs in two river areas in India. These microplastics carry harmful chemicals and are getting into the food chain, which could affect the safety of seafood that people eat. While the current risk appears low, this research shows we need better policies to reduce plastic pollution to protect both ocean ecosystems and human food sources.
Plastic contamination in commercially valuable decapods caught near a major Australian urban centre
Researchers examined the digestive tracts of four commercially harvested decapod crustacean species near Perth, Western Australia for microplastics, and tested muscle and hepatopancreas tissue for plasticizer chemicals. Microplastics were found in all species' guts, and phthalate and bisphenol plasticizers were detected in edible tissues, raising food safety concerns for local seafood consumers.
Determination of microplastics in commercial bivalves and estimation of exposure among population in Pasir Penambang, Kuala Selangor
Researchers measured microplastic abundance and characteristics in commercial bivalves from Pasir Penambang, Malaysia, and estimated human dietary exposure, finding that regular consumption of locally sold shellfish poses a notable microplastic ingestion risk.
Microplastics in seafood: Implications for food security, safety, and human health
This review examines how microplastics contaminate seafood -- from fish and shellfish to seaweed -- and what that means for food safety and human health. Marine organisms accumulate microplastics along with the harmful chemicals and antibiotic-resistant bacteria attached to them, creating multiple exposure risks when people eat seafood. With global seafood consumption rising sharply, the authors argue that microplastic contamination in the food supply deserves urgent attention from food safety regulators.
An examination of the occurrence and potential risks of microplastics across various shellfish
Researchers compared microplastic contamination levels in commercial shellfish from northern (Qingdao) and southern (Xiamen) China, finding microplastics in 70-100% of samples. The study assessed potential human health risks from consuming contaminated shellfish, with microplastic abundances varying across species and geographic locations.
Microplastic Exposure by Razor Clam Recreational Harvester-Consumers Along a Sparsely Populated Coastline
Researchers quantified microplastic burdens in Pacific razor clams collected from eight harvest sites along the Olympic Coast, Washington, and combined this with questionnaire data from 107 recreational harvesters to estimate annual microplastic ingestion from clam consumption. The study provided baseline contamination data for a culturally and economically important shellfish species and estimated the dietary microplastic exposure of coastal harvester-consumers.
Distribution Patterns and Human Exposure Risks of Microplastics in Dominant Wild Edible Shrimp: A Case Study of Haizhou Bay Marine Ranch
Researchers surveyed microplastic contamination in dominant wild shrimp species in Haizhou Bay, China, characterizing the types, sizes, and concentrations of MPs found in their bodies and assessing the human dietary exposure risks from consuming these economically important seafood species.
Potential risks of accumulated microplastics in shells and soft tissues of cultured hard clams (Meretrix taiwanica) and associated metals
Researchers found microplastics in both the shells and soft tissues of farmed hard clams in Taiwan, with small fibers being the most common type. The soft tissues showed higher potential ecological risk from microplastics than the shells, and the health risk from eating contaminated clams was greater for children than adults. While metal levels in the clams were within safe limits, the study highlights shellfish as another source of human microplastic exposure.
Assessment of Pollution Indices of Microplastic Contamination in Commercially Important Brachyuran Crab (Portunus sanguinolentus)
A study of 300 commercially harvested three-spot swimming crabs (Portunus sanguinolentus) from three ports in Gujarat, India, found microplastics in all samples, with two of the three sites classified in the highest risk contamination categories. Fibers dominated, and common packaging polymers including polyethylene and polystyrene were identified, raising food safety concerns for seafood consumers in the region.
Kandungan Mikroplastik pada Rajungan (Portunus pelagicus), Air Laut, dan Sedimen Di Perairan Desa Gugunung Wetan Kabupaten Rembang, Jawa Tengah
This Indonesian study measured microplastic concentrations in blue swimming crabs, seawater, and sediment from coastal waters in Central Java. The detection of microplastics in both the environment and in a commercially important crab species raises food safety concerns for communities that consume these crabs regularly.
Microplastics contamination in bivalves from the Daya Bay: Species variability and spatio-temporal distribution and human health risks
Researchers assessed microplastic contamination in six species of bivalves from Daya Bay, China, finding microplastics present in 87 to 93% of individuals sampled. Sediment-dwelling bivalves had higher microplastic levels than water-dwelling species, and the types of microplastics found in the shellfish matched those in the surrounding seawater and sediment. A risk assessment based on polymer hazard levels indicated that microplastic contamination in these bivalves may pose health risks to humans who consume them as seafood.
Exploring synergistic contamination of heavy metals and microplastics in marine edible fishes and associated risk status in humans
Researchers assessed heavy metal and microplastic contamination in multiple marine fish species along the Gujarat coastline and found substantial spatial and interspecies variation. Some species exceeded safe metal thresholds, and MP contamination was prevalent, with combined exposure posing amplified health risks for local consumers.
Microplastics in Pacific Northwest Bivalves: Ecological Prevalence, Harvester-Consumer Exposure, and Aquarium Exhibit Outcomes
Researchers quantified microplastics in Pacific oysters and razor clams from 15 coastal sites in Oregon, finding widespread contamination across the Pacific Northwest coast. The study also assessed exposure risks to seafood harvesters and consumers, contributing to understanding of how coastal plastic pollution reaches human food supplies.
Impact of Microplastic in Mexican Coastal Areas Using Mussels ( Mytilus spp.) as Biomonitors
This study used mussels as bioindicators to assess microplastic contamination along the Mexican Pacific coast, finding higher levels of microplastics and associated heavy metals in more urbanized areas. The results suggest potential health risks for people consuming seafood from contaminated coastal areas.