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RETRACTED: >Microplastics in different fish and shellfish species in the mangrove estuary of Bangladesh and evaluation of human exposure
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This retracted study investigated microplastic abundance in twenty fish and shellfish species from the Sundarbans mangrove estuary in Bangladesh. Researchers found microplastics in all samples, with bottom-feeding species showing the highest contamination levels, and estimated that the average person in Bangladesh may ingest over 85,000 microplastic particles per year through seafood consumption. The dominant polymer types identified were polypropylene, polyethylene, and polyamide.
The water bodies in Bangladesh thrive from plastic pollution. Estuaries are pools of environmental contaminants, and the world's largest mangrove forest, Sundarbans' estuary, is no exception. Thus, for the first time, we investigate MPs abundance in the muscle and gastrointestinal tract (GIT) of twenty estuarine species of fish and shellfish of the Sundarbans, as well as the human health risk. MPs abundance was evident in all the samples ranging from 5.37 ± 1.07 to 54.30 ± 16.53 MP items/g wet body weight (dw) in muscle samples and 7.33 ± 1.89 to 205.61 ± 136.88 MP items/g (dw) in GIT samples. The estimated health risk from MPs is substantial, where the average human intake will be 85,710.08 items of MPs per year per capita for the population of Bangladesh. The dominant polymer types observed using ATR-FTIR are PP and PE (17.5 %), PA (17.5 %) in the muscle tissues, and PP and PE (11.11 %), and EVA (11.11 %) in the GITs. Bottom-feeding species, such as demersal and benthic species, are more contaminated. However, the level of MPs in the species shows a negative correlation with the length and weight of the species. This study reveals that MP pollution is widespread and concerning in Bangladesh's Sundarban mangrove estuarine zone.
More Papers Like This
RETRACTED: Characterization of microplastic pollution in the Pasur river of the Sundarbans ecosystem (Bangladesh) with emphasis on water, sediments, and fish
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This retracted study characterized microplastic pollution in the Pasur River of Bangladesh's Sundarbans, finding plastic particles in 100% of water, sediment, and fish samples analyzed. Microplastics were found in both the digestive tracts and muscle tissue of nine fish species, with some species accumulating high levels in the edible flesh. Note: this paper has been retracted, so its findings should be treated with caution.
RETRACTED: Microplastic contamination in Penaeid shrimp from the Northern Bay of Bengal
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Researchers examined microplastic contamination in two species of commercially important shrimp from the Northern Bay of Bengal in Bangladesh. They found microplastics in the gastrointestinal tracts of both species, averaging about 3.4 to 3.9 particles per gram, predominantly black filaments and fibers made of polyamide and rayon. Note: this paper has been retracted by the journal.
Occurrence, polymer composition, and polymer-specific ecological and human health risks of microplastics in the Sundarbans mangrove ecosystem, Bangladesh: An integrated multi-compartment assessment.
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Researchers measured microplastics in water, sediment, fish, and shrimp from rivers and shellfish farms in the Sundarbans mangroves, Bangladesh. Microplastics, mostly fibers like nylon, polypropylene, and PVC, were found in all fish and most shrimp tested, with pollution highest near a busy port. The study reported moderate to high ecological risk and possible exposure concerns, especially for children, based on this short-term sampling.
RETRACTED: Managing the invisible threat of microplastics in marine ecosystems: Lessons from coast of the Bay of Bengal
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This study surveyed microplastic contamination across multiple marine environments along the Bay of Bengal coast, including beaches, surface water, and sediment. Researchers found microplastics at every sampling site, with fibers being the dominant shape and polyethylene the most common polymer type. The findings highlight the extent of plastic pollution in a coastal region that supports millions of people through fishing and aquaculture.
Assessment of microplastics in coastal ecosystem of Bangladesh
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Researchers surveyed microplastic contamination in water, beach sand, and fish along two major coastal areas of Bangladesh. Microplastics were found in every sample type, with fibers being the most common shape and polyethylene and polypropylene the dominant plastic types. Fish accumulated microplastics in their digestive tracts and body tissues, raising concerns about human exposure through seafood consumption in the region.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.