Microfiber Content in Freshwater Mussels from Rural Tributaries of the Saint John River, Canada

Doucet, Casey V.; Labaj, Andrew L.; Kurek, Joshua

doi:10.1007/s11270-020-04958-4

Cited by 20 publications

(38 citation statements)

References 49 publications

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“…As the chemical characterization of particles was not performed, potential synthetic fibres were classified from natural according to some morphological characteristics. In particular, natural fibres (Figure 1) lack the three-dimensional bending that is typically observed in anthropogenic fibres (Figure 2) which should be equally thick, not tapered at the end, and not segmented nor do they appear as twisted flat ribbons (Savoca et al, 2019;Avio et al, 2020;Doucet et al, 2021). According to Doucet et al (2021), prior to data analysis, microfibers counts within each blank, categorized by morphology, were subtracted from the counts of each associated sample.…”

Section: Visual Observation and Identification Of Microfibersmentioning

confidence: 99%

“…In particular, natural fibres (Figure 1) lack the three-dimensional bending that is typically observed in anthropogenic fibres (Figure 2) which should be equally thick, not tapered at the end, and not segmented nor do they appear as twisted flat ribbons (Savoca et al, 2019;Avio et al, 2020;Doucet et al, 2021). According to Doucet et al (2021), prior to data analysis, microfibers counts within each blank, categorized by morphology, were subtracted from the counts of each associated sample. Microfibers that were probably derived from the cellulose filter degradation due to the action of hydrogen peroxide were not counted.…”

Section: Visual Observation and Identification Of Microfibersmentioning

confidence: 99%

“…These particles are categorized by source, as primary or secondary microplastics, and based on color and shape (fragments, foams, films, and fibers) (EFSA, 2016). Plastic microfibers, a common form of microplastic pollution, are the most numerous debris reported in marine environments (Doucet et al, 2021). The definition of microfibers as a specific class among all microplastic pollutants has been recently proposed (Avio et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Microfibers have been detected in the gastrointestinal (GI) tracts and tissues of several marine vertebrates and invertebrates, including commercially important species, accounting for over 90% of the debris observed in fish from the Mediterranean Sea (Rochman et al, 2015;Halstead et al, 2018;Rios-Fuster et al, 2019;Capone et al, 2020). Ingested microfibers can cause digestive obstruction and carry chemical pollutants that may harm biota (Catarino et al, 2018;Doucet et al, 2021). However, far less is known about plastic and natural microfibers, despite the evidence they pose a risk to the environment (Doucet et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Ingested microfibers can cause digestive obstruction and carry chemical pollutants that may harm biota (Catarino et al, 2018;Doucet et al, 2021). However, far less is known about plastic and natural microfibers, despite the evidence they pose a risk to the environment (Doucet et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Occurrence of potential plastic microfibers in mussels and anchovies sold for human consumption: Preliminary results

et al. 2021

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There is a global concern over the impact of microplastics on marine species and trophic webs. Microfibers commonly represent the greater portion of microplastics in the aquatic environment, but little is known about fiber uptake and accumulation by marine biota. The aim of the study was to investigate the potential plastic microfiber contamination in mussels (Mytilus galloprovincialis) and anchovies (Engraulis encrasicolus) from the Tyrrhenian Sea sold for human consumption. Anthropogenic debris was extracted from the digestive tracts of fish and the whole shellfish using a 10% KOH solution and quantified under a light microscope. The preliminary results showed the occurrence of potential plastic and natural microfibers in 73% of the samples. On average mussels contained 1.33 microfibers/g w.w. and 7.66 items/individual, while anchovies contained 9.06 microfibers/individual. Considering that mussels are consumed as a whole, and small pelagic fish, as anchovy, may be eaten without removing the gastrointestinal tract, microfiber contamination may lead to human exposure. More research is required to adequately assess the risk that microplastics, including microfibers, may pose for food safety and human health.

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Section: Visual Observation and Identification Of Microfibersmentioning

confidence: 99%

Section: Visual Observation and Identification Of Microfibersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Occurrence of potential plastic microfibers in mussels and anchovies sold for human consumption: Preliminary results

et al. 2021

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Microparticles in Wild and Caged Biota, Sediments, and Water Relative to Large Municipal Wastewater Treatment Plant Discharges

Weir,

Kidd,

Hamilton

et al. 2024

Enviro Toxic and Chemistry

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Anthropogenically modified microparticles including microplastics are present in municipal wastewater treatment plant (WWTP) effluents; however, it is unclear whether biotic exposures are elevated downstream of these outfalls. In the fall of 2019, the present study examined whether microparticle levels in resident fish, environmental samples, and caged organisms were elevated near the Waterloo and Kitchener WWTP outfalls along the Grand River, Ontario, Canada. Wild rainbow darters (Etheostoma caeruleum) were collected from a total of 10 sites upstream and downstream of both WWTPs, along with surface water and sediment samples to assess spatial patterns over an approximately 70‐km river stretch. Amphipods (Hyalella azteca), fluted‐shell mussels (Lasmigona costata), and rainbow trout (Oncorhynchus mykiss) were also caged upstream and downstream of one WWTP for 14 or 28 days. Whole amphipods, fish digestive tracts, and mussel tissues (hemolymph, digestive glands, gills) were digested with potassium hydroxide, whereas environmental samples were processed using filtration and density separation. Visual identification, measurement, and chemical confirmation (subset only) of microparticles were completed. Elevated abiotic microparticles were found at several upstream reference sites as well as at one or both wastewater‐impacted sites. Microparticles in amphipods, all mussel tissues, and wild fish did not show patterns indicative of increased exposures downstream of effluent discharges. In contrast, elevated microparticle counts were found in trout caged directly downstream of the outfall. Across all samples, cellulose fibers (mainly blue and clear colors) were the most common. Overall, results suggest little influence of WWTP effluents on microparticles in biota but rather a ubiquitous presence across most sites that indicates the importance of other point and nonpoint sources to this system. Environ Toxicol Chem 2024;00:1–15. © 2024 His Majesty the King in Right of Canada and The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC. Reproduced with the permission of the Minister of Environment and Climate Change Canada.

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Microfibers (MFs): Occurrences, Sources, and Ecological Interactions

Leela,

Rekha,

Gopi

et al. 2024

Microplastics and Pollutants

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Microfiber Content in Freshwater Mussels from Rural Tributaries of the Saint John River, Canada

Cited by 20 publications

References 49 publications

Occurrence of potential plastic microfibers in mussels and anchovies sold for human consumption: Preliminary results

Occurrence of potential plastic microfibers in mussels and anchovies sold for human consumption: Preliminary results

Microparticles in Wild and Caged Biota, Sediments, and Water Relative to Large Municipal Wastewater Treatment Plant Discharges

Microfibers (MFs): Occurrences, Sources, and Ecological Interactions

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