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Microplastic contamination in water and organs of Deveximentum insidiator (Ponyfish) from a potential fishing zone off Mangalore, southeastern Arabian Sea
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Researchers found an average of 28 microplastics per ponyfish individual and 2.97 MPs/L in surrounding water from a fishing zone in the southeastern Arabian Sea, with fiber morphologies and PET polymer dominating across both fish and water samples.
This study investigates microplastic (MP) contamination in Deveximentum insidiator (pony fish or silverbellies), a commercially important species in the Indo-West Pacific, with samples collected from a Potential Fishing Zone (PFZ) in the Southeastern Arabian Sea on February 20, 2024. A total of 51 fish specimens and corresponding water column samples were analyzed to assess the prevalence and characteristics of MPs. The results revealed an average of 28.21 ± 17.73 MPs per individual and 2.97 ± 3.02 MPs per litre of water. Organ-specific accumulation showed the highest MP load in the gut (31.8 %), followed by the muscle (25.71 %), gills (23.83 %), and gonads (18.62 %). In fish, fibres dominated (99.32 %), while fragments (52.10 %) were most abundant in water. MPs in fish were predominantly 11-100 μm in size, indicating bioaccumulation potential, whereas larger MPs (1000-3000 μm) were more common in water (37.81 %). Polypropylene was the major polymer detected in both fish and water samples. Potential human health risks were assessed through estimates of MP intake via fish consumption. Adults may ingest approximately 20.57 MPs/day (7505 MPs/year), and children 9.80 MPs/day (3577 MPs/year). Risk assessment indices indicated low ecological risk (PLI: fish = 2.41, water = 1.55-2.27), but moderate toxicity risk based on the Polymer Hazard Index (PHI: fish = 9.68; water = 10.89). This study provides the first documented evidence of MP presence in D. insidiator in this region, highlighting the species' exposure to MPs and the associated potential health risks for seafood consumers. These findings underscore the need for species-specific assessments to inform marine conservation strategies food safety management in Potential Fishing Zones.
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First evidence of microplastics in Deveximentum insidiator from a potential fishing zone in the southeastern Arabian Sea.
AI summary Read the abstract
Researchers documented the first evidence of microplastics in Deveximentum insidiator pony fish from the southeastern Arabian Sea, characterizing the polymer composition and particle morphology in a commercially important species sold fresh and dry-salted throughout Indo-West Pacific coastal regions.
First evidence of microplastics in Deveximentum insidiator from a potential fishing zone in the southeastern Arabian Sea.
AI summary Read the abstract
Researchers documented the first evidence of microplastics in the pony fish Deveximentum insidiator collected from a commercially important fishing zone in the southeastern Arabian Sea, characterizing particle types and polymer composition in this species valued for its nutritional content and role as fishermen's bait.
Assessment of Microplastic Pollution Across the Malabar Coast, India
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Researchers assessed microplastic contamination in water, sediment, and commercially important fish along the Malabar coast in India. They found microplastics in all sample types, with the highest concentrations in fish gastrointestinal and gill tissues, predominantly consisting of fragments and fibers of common plastics like HDPE, PET, and nylon. The study points to direct discharges, runoff, and poor wastewater management as key sources, underscoring the need for regulatory measures to protect both marine ecosystems and the people who consume seafood from the region.
Quantification, identification, and chemical characterization of microplastics (MPs) in commercial fishes from the Palk Strait, Southeast India
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Researchers examined microplastics in the tissues and guts of 75 commercially important fish from the Palk Strait in Southeast India, finding an average of 115 particles per individual. Fibers were the most common form at 51%, with polyethylene and polypropylene as the dominant polymers, and particle sizes ranged from 0.1 to 1.0 millimeters. The presence of microplastics in edible fish tissues suggests a potential route of human exposure through seafood consumption.
Quantification, identification, and chemical characterization of microplastics (MPs) in commercial fishes from the Palk Strait, Southeast India
AI summary Read the abstract
Researchers examined microplastics in the tissues and guts of 75 commercially important fish from the Palk Strait in Southeast India, finding an average of 115 particles per individual. Fibers were the most common form at 51%, with polyethylene and polypropylene as the dominant polymers, and particle sizes ranged from 0.1 to 1.0 millimeters. The presence of microplastics in edible fish tissues suggests a potential route of human exposure through seafood consumption.
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