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61,005 resultsShowing papers similar to In situ evaluation of genotoxicity and cytotoxicity associated with microplastics in an intertidal clam, Gafrarium divaricatum (Gmelin, 1791)
ClearComparative 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.
Assessment of microplastic contamination in clams and shrimp from estuarine environments of Goa: implications for environmental health and food safety
Researchers examined clams and shrimp from estuarine environments in Goa, India, and found microplastics present in both species and their surrounding waters, with shrimp from one site showing particularly high contamination and bioaccumulation. The particles were predominantly polyamide, polyethylene, and polystyrene fibers and fragments, likely originating from fishing, tourism, and waste disposal activities. The findings raise concerns about food safety for local and tourist populations who regularly consume seafood from these coastal areas.
Microplastics in the foreshore coastal waters, sediment, and coastal fauna of a highly populated megacity - A study on the effect of anthropogenic discharge on clams
Researchers documented microplastic contamination in coastal waters, sediments, and clams across three beaches of a highly populated Indian megacity, finding high abundances of up to 537.5 items per liter in water and significant bioaccumulation in clam soft tissues.
Evaluation of genotoxic and mutagenic potential of polystyrene nanoplastics in forked venus clam, Gafrarium divaricatum (Gmelin, 1791)
Researchers evaluated the genotoxic and mutagenic effects of polystyrene nanoplastics on an intertidal clam species over exposure periods of 96 hours and 15 days. They found significant time- and concentration-dependent DNA damage, micronuclei formation, and altered expression of stress and DNA repair genes in gill and intestinal tissues. The study demonstrates that nanoplastics can cause genetic damage in marine bivalves, raising concerns about their ecological impact.
Genotoxicity and Genomic Instability Induced by Micro- and Nanoplastics: A Comprehensive Multi-Taxa Mechanistic Review.
This review of existing research found that tiny plastic particles (microplastics and nanoplastics) can damage DNA in many different living things, from fish to human cells. The plastic particles cause this damage by creating harmful molecules called free radicals, disrupting the body's ability to repair DNA, and triggering inflammation. These findings suggest that the growing amount of plastic pollution in our environment could pose serious health risks to humans and wildlife.
Microplastics effects in Scrobicularia plana
Researchers exposed clams to polystyrene microplastics for 14 days and found that the particles accumulated in tissues and were not fully eliminated even after a week of depuration in clean water. The microplastics caused measurable oxidative damage, DNA damage, and neurotoxic effects in the clams. The study demonstrates that even short-term microplastic exposure can cause lasting biological harm in marine bivalves.
Effects of nanoplastics on clam Ruditapes philippinarum at environmentally realistic concentrations: Toxicokinetics, toxicity, and gut microbiota
Researchers exposed clams to nanoplastics at concentrations found in real marine environments and tracked how the particles accumulated in their tissues over 14 days. The nanoplastics caused physical damage and significantly altered the clams' gut bacteria. This is concerning because clams are widely consumed seafood, meaning nanoplastic contamination could affect both marine ecosystems and human food sources.
Evidence-based meta-analysis of the genotoxicity induced by microplastics in aquatic organisms at environmentally relevant concentrations
Microplastics at environmentally relevant concentrations (≤1 mg/L) significantly increased DNA damage in aquatic organisms by 20-81% across multiple genotoxic endpoints, with effects correlated to particle size, living habitat, and species but independent of exposure concentration or duration.
Microplastic in clams: An extensive spatial assessment in south Brazil
Researchers assessed microplastic contamination in clams collected from extensive coastal regions of southern Brazil. They found microplastics in the soft tissues of clams across all sampling sites, with contamination levels influenced by proximity to urban areas, rivers, and local water flow patterns. The study highlights that even organisms in less urbanized coastal areas are accumulating microplastics, raising concerns about widespread contamination in shellfish habitats.
Co-exposure to Microplastics and Cadmium: Effects on DNA Damage in Mytilus Galloprovincialis
This study investigated how co-exposure to microplastics and cadmium affects DNA damage in the Mediterranean mussel Mytilus galloprovincialis. Microplastics acted as vectors for cadmium, and combined exposure resulted in greater genotoxic effects than either pollutant alone.
Ecotoxicological Effects of Chemical Contaminants Adsorbed to Microplastics in the Clam Scrobicularia plana
Researchers exposed clams to low-density polyethylene microplastics that had been pre-contaminated with persistent organic pollutants and measured ecotoxicological effects including oxidative stress and genotoxicity. The study found that microplastics carrying adsorbed chemical contaminants caused greater biological damage than clean microplastics alone, suggesting that the pollutant-carrier role of microplastics amplifies their environmental impact on bivalves.
Assessment of Microplastics Contamination in Commericial Clams in the Coastal Zone of Vietnam
Microplastic contamination was assessed in commercially harvested clams from aquaculture farms in coastal Vietnam, a country where microplastic impacts on aquaculture are poorly understood. Both vertebrates and invertebrates in coastal areas were found to ingest microplastics, raising concerns about food safety in Vietnamese seafood.
Environmental microplastics compromise reproduction of the marine invertebrate Mytilus galloprovincialis: A holistic approach
Exposing Mediterranean mussel (Mytilus galloprovincialis) gametes to 50 or 100 µg/L environmental microplastics for 1 hour reduced fertilization success, increased larval malformation rates, and caused DNA degradation, demonstrating reproductive toxicity from environmentally realistic MP concentrations.
A comparative analysis of microplastic contamination in hermit crab Clibanarius rhabdodactylus Forest, 1953, inhabiting intertidal and subtidal Coastal habitat of Gujarat state
Researchers compared microplastic contamination in hermit crabs inhabiting intertidal versus subtidal zones in Gujarat, India, finding higher microplastic loads in intertidal crabs due to greater exposure to coastal plastic pollution sources.
Microplastic prevalence, diversity and characteristics in commercially important edible bivalves and gastropods in relation to environmental matrices
Researchers assessed microplastic abundance and characteristics in the tissues of commercially important bivalves and gastropods from the southwest coast of India, finding MPs across all five species examined and raising concerns about seafood safety.
Microplastic ingestion in mussels from the East Mediterranean Sea: Exploring its impacts in nature and controlled conditions
Mussels from fish farms in the eastern Mediterranean had the highest microplastic contamination, likely from plastic aquaculture equipment, while mussels from a Marine Protected Area had the lowest. The study found that higher microplastic levels in mussels were linked to measurable signs of oxidative stress, DNA damage, and nerve toxicity, showing that these filter-feeding shellfish -- commonly eaten by people -- are actively harmed by the plastic particles they ingest.
Virgin Polystyrene Microparticles Exposure Leads to Changes in Gills DNA and Physical Condition in the Mediterranean Mussel Mytilus Galloprovincialis
Researchers exposed Mediterranean mussels (Mytilus galloprovincialis) to virgin polystyrene microparticles and found significant DNA damage in gill tissue and reduced physical condition, suggesting that even virgin microplastics pose a genotoxic risk to marine filter feeders.
Microplastic Pollution in the Marine Ecosystem: A Study of Seawater and Fish Samples from Bhaucha Dhakka and Versova Beach, Mumbai Coast
Researchers investigated microplastic contamination in seawater and commercially harvested fish species from two locations along the Mumbai coast in India. They found microplastics in all water and fish samples, with the highest concentrations at a busy port site and in Bombay duck fish. The discovery of microplastics in fish tissues raises concerns about potential implications for fish health and human consumption of contaminated seafood.
Distribution of microplastics in seafloor sediments and their differential assimilation in nearshore benthic molluscs along the south-west coast of India
Researchers investigated microplastic contamination in seafloor sediments and benthic molluscs along a 300-kilometer stretch of India's southwest coast. They found significant MP levels in both sediments and all four mollusc species studied, with scavenging gastropods accumulating the highest concentrations. The study reveals that feeding strategy is a key factor in microplastic uptake by marine organisms, with ecological risk indices indicating elevated contamination levels in most sampling stations.
Occurrence and human health risks of microplastics in the Bay of Bengal using Perna viridis as sentinel species
Researchers found microplastics in water, sediment, and green mussel tissues at every site tested across five locations in the Bay of Bengal. The mussels showed tissue damage including inflammation and cell death linked to microplastic accumulation, with the digestive gland carrying the highest burden. Since these mussels are consumed by local communities, the findings raise direct concerns about human microplastic exposure through seafood.
Contaminants and their ecological risk assessment in beach sediments and water along the Maharashtra coast of India: A comprehensive approach using microplastics, heavy metal(loid)s, pharmaceuticals, personal care products and plasticisers
Researchers conducted a comprehensive survey of multiple contaminant types along India's Maharashtra coast, including microplastics, heavy metals, pharmaceuticals, and plasticizers in both water and sediment. They found widespread contamination with microplastics present at all 17 sampling stations, alongside concerning levels of other pollutants. The study highlights how coastal communities face exposure to a cocktail of emerging contaminants, with microplastics potentially acting as carriers for other harmful substances.
Assessment of micro and macroplastics along the west coast of India: Abundance, distribution, polymer type and toxicity.
This study assessed the abundance and types of micro- and macroplastics on ten beaches along India's west coast, finding plastic in all locations with fragments being the most common form. Polymer analysis revealed polypropylene, polyethylene, and polystyrene as the dominant types, and toxicity testing indicated the plastic-contaminated sediments posed ecological risks.
The extent of microplastic pollution along the eastern coast of India: Focussing on marine waters, beach sand, and fish
Researchers assessed microplastic contamination across water, sand, and fish from seven major beaches along India's eastern coast, finding widespread pollution dominated by polyethylene and polystyrene with hazard indices indicating potential ecological risk.
Revealing the hidden threats: Genotoxic effects of microplastics on freshwater fish
Researchers exposed a common freshwater fish to microplastics and found evidence of DNA damage in blood cells, along with changes in liver function and oxidative stress markers. The study took a comprehensive approach, measuring effects from the molecular level up to whole-organism responses. These genotoxic effects (damage to genetic material) in fish raise questions about whether chronic microplastic exposure could pose similar risks to other organisms, including humans.