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61,005 resultsShowing papers similar to Recherche D’especes Bioindicatrices De La Pollution Plastique Dans Un Contexte Perlicole En Polynesie Française
ClearMicroplastics contamination in pearl-farming lagoons of French Polynesia
Microplastic contamination was documented in pearl-farming lagoons of French Polynesia, establishing a pollution baseline for these economically important tropical ecosystems and identifying local aquaculture activities as a contributing source.
Pearl farming micro-nanoplastics affect both oyster physiology and pearl quality
Pearl oysters (Pinctada margaritifera) in French Polynesia were exposed to micro-nanoplastics derived from actual farming equipment over a five-month production cycle, and the plastics disrupted the oysters' energy metabolism and altered the crystal structure of growing pearls. The study demonstrates that microplastic contamination in lagoons poses a real economic threat to the pearl industry alongside its ecological impacts.
Pearl farming micro-nanoplastics affect both oyster physiology and pearl quality
Researchers exposed pearl oysters in French Polynesian lagoons to micro- and nanoplastics shed from pearl farming equipment itself, and found that even environmentally realistic concentrations disrupted energy metabolism and reduced how efficiently the oysters absorbed food from algae. After five months of exposure, both oyster health markers and pearl quality were measurably degraded. This shows that plastic pollution in aquaculture settings can undermine the very industry it contaminates, linking environmental and economic harm.
Pearl Farming Micro-Nanoplastics Affect Oyster Physiology and Pearl Quality
Pearl farming plastic gear was found to generate micro-nanoplastics (0.4-200 um) that affect pearl oyster (Pinctada margaritifera) physiology and pearl quality over a 5-month production cycle. The study closely mimicked real ecological conditions to assess risks to the pearl farming industry in French Polynesia.
Pearl Farming Micro-nanoplastics Affect Oyster Physiology and Pearl Quality
Pearl oysters (Pinctada margaritifera) exposed to micro-nanoplastics shed from plastic pearl farming equipment showed disrupted energy metabolism, reduced assimilation of microalgae food, and impaired pearl quality over a five-month production cycle. The study is notable because it tested environmentally realistic plastic concentrations, linking the industry's own plastic infrastructure to measurable biological harm in the farmed animals.
Microplastics Affect Energy Balance and Gametogenesis in the Pearl Oyster Pinctada margaritifera
Pearl oysters exposed to microplastics showed disrupted energy metabolism and impaired gametogenesis, suggesting that plastic pollution could threaten the reproductive success of marine bivalves used in pearl farming. The findings have economic as well as ecological implications, given that pearl farming is a major industry in tropical Pacific island nations.
Peran Organisme Sessile Sebagai Bioindikator Mikroplastik Di Ekosistem Pesisir: Systematic Literature Review
This systematic literature review synthesizes evidence on how sessile coastal organisms — particularly bivalves like mussels and oysters — accumulate microplastics through their filter-feeding behavior, making them useful biological indicators of contamination. The review found that fibers dominate across most species and locations, and that polyethylene, polypropylene, and PET are the most common polymer types. Because these organisms are widely consumed by humans and are sensitive to environmental changes, they serve as both ecological sentinels and a potential pathway for microplastic exposure in human diets.
Pearl farming micro-nanoplastics affect both oyster physiology and pearl quality
Microplastics shed from pearl farming equipment accumulate in lagoon waters and, even at low concentrations, disrupt the energy metabolism, immune function, and reproductive biology of pearl oysters over a 5-month production cycle. Pearl quality was measurably degraded, meaning plastic pollution from aquaculture gear creates a feedback loop that harms the very industry generating it. This highlights a practical economic incentive — beyond ecological concern — for reducing plastic use in mariculture.
Bioindicators for monitoring marine litter ingestion and its impacts on Mediterranean biodiversity
Researchers reviewed existing knowledge of marine litter ingestion impacts on Mediterranean biodiversity and proposed a new integrated monitoring framework using bioindicator species, identifying major knowledge gaps in understudied habitats and sub-regions while outlining a threefold approach to simultaneously measure plastic presence and its sub-lethal effects on organisms.
The need for a sentinel species: considerations towards regional bioindicators
Researchers examined the case for establishing sentinel species as regional bioindicators for microplastic monitoring, evaluating candidate organisms including fish and shellfish for their suitability based on geographic range, abundance, ecological relevance, and ability to reflect the bioavailable fraction of marine litter.
Pearl Farming Micro-Nanoplastics Affect Oyster Physiology and Pearl Quality
Researchers studied how micro- and nanoplastics from weathered pearl farming equipment affect oyster health and pearl quality in French Polynesia. Even at very low concentrations, the plastic particles reduced the oysters' ability to absorb nutrients and altered gene expression related to shell formation. The findings raise concerns that plastic pollution from farming equipment could threaten pearl quality and the long-term viability of the pearl industry.
The need for a sentinel species: considerations towards regional bioindicators
Researchers examined the need for sentinel bioindicator species to generate robust monitoring data for marine litter and microplastics, evaluating candidate species including fish and shellfish based on criteria such as geographic range, abundance, and economic importance. The study proposed a framework for selecting effective regional bioindicators to inform ecotoxicological models and support emerging plastic pollution policy.
Barnacles as potential bioindicator of microplastic pollution in Hong Kong
Researchers examined microplastic occurrence in four barnacle species collected from 30 sites across Hong Kong waters, finding microplastics — predominantly fibers — in all species and proposing barnacles as potential bioindicators of coastal microplastic pollution.
Coastal ecosystem inventory with characterization and identification of plastic contamination and additives from aquaculture materials
Researchers conducted a pilot study of an Atlantic French coastal area used for oyster aquaculture and found that 70% of beached plastics originated from aquaculture materials, while sediment samples contained microplastics carrying plastic-associated chemical additives, documenting a distinct aquaculture-driven contamination signature.
Microplastic contamination in marine-cultured fish from the Pearl River Estuary, South China
Microplastic abundance was measured in the stomach and intestine of marine-cultured hybrid groupers from the Pearl River Estuary, finding that farmed fish accumulated plastics at levels comparable to wild-caught species. The study highlights aquaculture environments as sites of significant microplastic exposure even for fish not feeding on wild prey.
Baseline assessment of microplastics and biochemical response of Anadara antiquata as a sentinel species for biomonitoring in Fiji
Researchers established a baseline assessment of microplastic contamination in a commonly consumed shellfish species in Fiji, examining both particle levels and biochemical stress responses. They found microplastics present in all samples and observed measurable biochemical changes in the organisms. The study provides important first data on microplastic pollution in Pacific Island seafood, a region that has been largely overlooked in monitoring efforts.
Distribution and biological implications of plastic pollution on the fringing reef of Mo’orea, French Polynesia
This study quantified both macro- and microplastic pollution on the coral reef of Mo'orea in French Polynesia, finding plastic at every sampled beach and in reef sediments. The research demonstrates that even remote Pacific island coral reefs receive significant plastic contamination from oceanic gyres and local sources.
Distribution and biological implications of plastic pollution on the fringing reef of Mo’orea, French Polynesia
This study found plastic pollution at every sampled site on the fringing coral reef of Mo'orea in French Polynesia, with microplastics distributed throughout the reef and lagoon sediments. The research documents plastic contamination of a remote Pacific reef ecosystem and discusses possible effects on reef-building corals and associated species.
Efficacy of freshwater pearl mussel (Lamellidens marginalis) as a biomonitoring tool for assessing microplastic pollution
Laboratory experiments showed that freshwater pearl mussels readily ingested microplastic particles, which then accumulated in their organs and tissues and caused measurable histological damage. This is relevant because freshwater mussels are widely used as biomonitors of water quality, and the findings confirm they can serve as indicators of microplastic pollution while also showing that this pollution harms them.
Effects of microplastics on sessile invertebrates in the eastern coast of Thailand: An approach to coastal zone conservation
Researchers assessed microplastic contamination in three abundant intertidal invertebrate species along Thailand's eastern coast, including rock oysters, barnacles, and periwinkles. They found microplastic accumulation rates of 0.2 to 0.6 particles per gram across all species, with filter-feeding organisms showing higher accumulation. The study suggests that sessile intertidal organisms can serve as effective bioindicators for monitoring coastal microplastic pollution levels.
Microplastics impact shell and pearl biomineralization of the pearl oyster Pinctada fucata
Researchers found microplastics embedded within the shells and pearls of the pearl oyster Pinctada fucata for the first time, demonstrating that microplastic pollution can interfere with biomineralization processes in commercially important marine bivalves.
Chemical identification of microplastics in marine organisms from the Ryukyu Archipelago, Japan
Researchers chemically identified microplastics found in marine organisms from the coral reefs of the Ryukyu Archipelago in Okinawa, Japan, characterizing polymer types and particle abundance in a region under high plastic pollution pressure. The study documented diverse polymer types in reef-associated marine organisms, reflecting the complex mixture of plastic sources in Pacific island coastal waters.
Ostracoda and Foraminifera as bioindicators of (aquatic) pollution in the protected area of uMlalazi estuary, South Africa
Researchers used tiny shell-bearing organisms (ostracods and foraminifera) as biological indicators to assess water quality in a protected South African estuary. Despite its protected status, the estuary showed signs of pollution based on the species diversity and health of these indicator organisms. While not focused on microplastics specifically, these biological monitoring methods could be adapted to assess the ecological impact of microplastic pollution in coastal and estuarine environments.
Distribution and biological implications of plastic pollution on the fringing reef of Mo’orea, French Polynesia
This study documented the distribution and biological impacts of plastic pollution on the fringing coral reef of Mo'orea in French Polynesia, finding plastics throughout the ecosystem including entanglement of corals with macroplastics. The results show that even remote, protected coral reefs are affected by the global plastic pollution crisis.