Plastic ingestion by the Wels catfish (Silurus glanis L.): detailed chemical analysis and degradation state evaluation

Mičušík, Matej; Kleinová, Angela; Oros, Mikuláš; Šimon, Peter; Dubaj, Tibor; Procházka, Michal; Omastová, Mária

doi:10.1016/j.toxrep.2021.11.006

Cited by 5 publications

(1 citation statement)

References 39 publications

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“…There is a broad spectrum of effects on the individual organism, from the occurrence of inflammatory and phlogistic states to changes in gene expression and the onset of cancer disease. In marine environments, plastics can enter food webs through ingestion by animals, leading to bioaccumulation and/or biomagnification, or can also become carriers of toxic and hazardous substances (heavy metals or persistent organic pollutants), transported and spread through marine currents [5,9].…”

Section: Introductionmentioning

confidence: 99%

Insights into Plastic Degradation Processes in Marine Environment by X-ray Photoelectron Spectroscopy Study

Di Giulio,

De Benedetto,

Ditaranto

et al. 2024

IJMS

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The present study employs X-ray photoelectron spectroscopy (XPS) to analyze plastic samples subjected to degradation processes with the aim to gain insight on the relevant chemical processes and disclose fragmentation mechanisms. Two model plastics, namely polystyrene (PS) and polyethylene (PE), are selected and analyzed before and after artificial UV radiation-triggered weathering, under simulated environmental hydrodynamic conditions, in fresh and marine water for different time intervals. The object of the study is to identify and quantify chemical groups possibly evidencing the occurrence of hydrolysis and oxidation reactions, which are the basis of degradation processes in the environment, determining macroplastic fragmentation. Artificially weathered plastic samples are analyzed also by Raman and FT-IR spectroscopy. Changes in surface chemistry with weathering are revealed by XPS, involving the increase in chemical moieties (hydroxyl, carbonyl, and carboxyl functionalities) which can be correlated with the degradation processes responsible for macroplastic fragmentation. On the other hand, the absence of significant modifications upon plastics weathering evidenced by Raman and FT-IR spectroscopy confirms the importance of investigating plastics surface, which represents the very first part of the materials exposed to degradation agents, thus revealing the power of XPS studies for this purpose. The XPS data on experimentally weathered particles are compared with ones obtained on microplastics collected from real marine environment for investigating the occurring degradation processes.

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Section: Introductionmentioning

confidence: 99%

Insights into Plastic Degradation Processes in Marine Environment by X-ray Photoelectron Spectroscopy Study

Di Giulio,

De Benedetto,

Ditaranto

et al. 2024

IJMS

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On the Novel Process of Pristine Microplastic Bio-fragmentation by Zebrafish (Danio rerio)

Khan¹,

Ali²

2023

Arch Environ Contam Toxicol

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Variability in microplastic color preference and intake among selected marine and freshwater fish and crustaceans

Horie,

Mitsunaga,

Yamaji

et al. 2024

Discov Oceans

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Plastic pollution is considered a pervasive global environmental challenge. Colored microplastics are prevalent in aquatic environments and the gastrointestinal tracts of wild-captured fish and crustaceans. Fish are thought to employ color vision to detect microplastics, prompting our investigation into microplastic ingestion patterns in three marine fish species, Chrysiptera cyanea, Hypoatherina tsurugae, and Plotosus japonicus, and three freshwater fish species, Rhodeus ocellatus, Pseudorasbora parva, and Misgurnus anguillicaudatus. Microplastics in red, blue, yellow, green, and gray were introduced to these species, and their ingestion was observed over a 4 h period under light conditions. Additionally, as crustaceans play an important role in connecting producers (phytoplankton) and consumers (fish) in natural ecosystems, we assessed a freshwater crustacean, Neocaridina denticulata. The crustacean did not ingest microplastics, and only 14% of P. parva individuals ingested microplastics (a proportion lower than that observed in the other fish species). Notably, C. cyanea, P. japonicus, and R. ocellatus exhibited color preferences in microplastic ingestion, with C. cyanea favoring red, P. japonicus preferring blue and gray, and R. ocellatus favoring red and yellow. Conversely, H. tsurugae, P. parva, and M. anguillicaudatus did not exhibit such color preferences. These findings suggest that certain fish use color vision to recognize and selectively ingest microplastics, with color preference being species-specific. Overall, this study provides new insights into microplastic ingestion by fish, potentially informing future toxicological assessments of microplastics in marine and freshwater fish and crustaceans intendan consumption.

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Plastic ingestion by the Wels catfish (Silurus glanis L.): detailed chemical analysis and degradation state evaluation

Cited by 5 publications

References 39 publications

Insights into Plastic Degradation Processes in Marine Environment by X-ray Photoelectron Spectroscopy Study

Insights into Plastic Degradation Processes in Marine Environment by X-ray Photoelectron Spectroscopy Study

On the Novel Process of Pristine Microplastic Bio-fragmentation by Zebrafish (Danio rerio)

Variability in microplastic color preference and intake among selected marine and freshwater fish and crustaceans

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