Occurrence of microplastics (MPs) in the gastrointestinal tract of fishes: A global systematic review and meta-analysis and meta-regression

Zazouli, Mohammad Ali; Nejati, Habib; Hashempour, Yalda; Dehbandi, Reza; Nam, Van; Fakhri, Yadolah

doi:10.1016/j.scitotenv.2021.152743

Cited by 50 publications

(13 citation statements)

References 111 publications

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“…MPs can pass and accumulate in fish through gill respiration or ingestion behavior, which has been detected in the gastrointestinal tract, gill, or circulatory system of fish (Zazouli et al 2022). In general, larger MPs tend to accumulate in the digestive tract and be excreted more quickly, while smaller ones can be transported through the digestive tract to the circulatory system and more likely to remain in the fish (Kaposi et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Protective efficacy of dietary natural antioxidants on microplastic particles-induced histopathological lesions in African catfish (Clarias gariepinus)

Sayed

Hana

Hamed

et al. 2022

Environ Sci Pollut Res

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Microplastic particles (MPs) are a common environmental pollutant easily ingested by fish in aquaculture. The current study evaluated the protective efficacies of some antioxidant, e.g., lycopene, citric acid, and chlorella, against the toxic effects of MP ingestion by Clarias gariepinus using histopathological biomarkers. Five experimental groups were established, a control group receiving only a standard diet, a group exposed to 500 mg/kg MP concomitant with the standard diet, and three antioxidant groups exposed to MPs plus either lycopene (500 mg/kg), citric acid (30 g/kg), or chlorella (50 g/kg) in the standard diet. After 15 days, fish were sacrificed for histological and histochemical examinations. Histological analysis of the kidney for group 2 (fed 500 mg/kg MPs alone) revealed distributed tissue dissociation, regional glomerular hypertrophy or shrinkage, melanomacrophage accumulation, and expansion of Bowman’s space, while liver tissue exhibited dilation and rupture of the central vein wall, hemorrhage, cytoplasmic vacuolation, and cellular necrosis or apoptosis. Fish exposed to MPs also exhibited connective tissue fiber accumulation around renal blood vessels, renal tubules, the central hepatic vein, hepatic blood sinusoids, and serosal, muscle, and submucosal layers of the intestine. In addition, MP exposure reduced carbohydrate (mainly glycogen) contents in the brush borders and basement membranes of renal tubules, glomeruli, and intestinal tissues as well as in the cytoplasm of hepatocytes. These signs of renal, hepatic, and intestinal histopathology were fully or partially reversed by dietary lycopene, chlorella, or citric acid. Enhancing dietary antioxidants is an effective strategy for preventing MP toxicity in Clarias gariepinus in aquaculture.

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Section: Introductionmentioning

confidence: 99%

Protective efficacy of dietary natural antioxidants on microplastic particles-induced histopathological lesions in African catfish (Clarias gariepinus)

Sayed

Hana

Hamed

et al. 2022

Environ Sci Pollut Res

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“…However, no MPs were detected in A. boyeri's GITs; hence, the risk can be considered not relevant to date based on the available information. Conversely, some MPs were detected in the GITs of C. lavaretus, although MP concentrations (0.15 MPs/fish) were low compared to the mean values observed in lake fish (5.50 MPs/fish) and in high-income economies (1.45 MPs/fish), according to a recent review (Zazouli et al 2022). The GITs of C. lavaretus are discarded as fillets are the edible part; hence, there is no ingestion of the MPs from GITs during food consumption.…”

Section: Discussionmentioning

confidence: 93%

Microplastics distribution and possible ingestion by fish in lacustrine waters (Lake Bracciano, Italy)

Cera

Sighicelli

Sodo

et al. 2022

Environ Sci Pollut Res

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Understanding the spatial distribution patterns of microplastics (plastics < 5 mm) contributes to the assessment of sources and sinks of pollution thus providing information for the management of biota safety and overall ecosystem functionality. We chose a semi-closed study area, Lake Bracciano (Italy), to assess the environmental variability of contamination, focusing on the water compartment and the exposure of biota, specifically fish, by analysing the ingestion of microplastics. The focus of this study is to evaluate the concentration of microplastics in water (surface and column) across the lake and the ingestion of microplastics by two fish species of economic interest: Atherina boyeri and Coregonus lavaretus, inhabiting demersal and pelagic habitats respectively. Results show a surface contamination of 392,000 ± 417,000 items km −2 and a column one of 0.76 ± 1.00 items m −3 . Fragments were the most abundant in surface while fibres in the column. Microplastics were found in C. lavaretus specimens, corresponding to contamination frequency of 5% and concentration of 0.15 items/ fish. The main polymer found in water was polyethylene (81%); of minor percentages, there were various other polymers, including polystyrene and acrylic, which were also found in fish. As scientific literature provides few research where water and fish are simultaneously sampled, this investigation wants to contribute filling this knowledge gap by investigating for the first time a volcanic lake.

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“…Another study has reported the MPs with a range of 1 to 6 MPs/GIT in eight different fish species from a municipal water supply lake (Eleyele) in Nigeria [ 65 ]. Several findings have reported MPs in the fish guts from different aquatic ecosystems, with 5.50 MPs/GIT in the lake fishes, 5.46 MPs/GIT in the estuarine fishes, 2.91 MPs/GIT in the river fishes, and 2.85 MPs/GIT in the marine fishes [ 66 ]. A deficient concentration of MP was reported in the fish GIT (0.41 MPs/GIT) in Cyprinus carpio and Alburnus mossulensis , from Sürgü Dam Reservoir, Turkey, and a higher concentration of MP was found in the fish GIT from Lake Ontario, Canada in seven different species of fish (59 MPs/GIT) and Lake Van Turkey (34 MPs/GIT in Alburnus tarichi ) [ 67 , 68 , 69 ].…”

Section: Resultsmentioning

confidence: 99%

Microplastics in the Surface Water and Gastrointestinal Tract of Salmo trutta from the Mahodand Lake, Kalam Swat in Pakistan

Bilal

Hassan

Siddique

et al. 2022

Toxics

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Microplastic pollution is becoming an increasingly severe environmental problem. As compared to the marine ecosystem, freshwater ecosystems at high-altitude, remote regions are less studied and lag far behind. Thus, the present study aims to highlight this issue and fill the gap in this regard. The presence of microplastics (MPs) in the surface water and the gastrointestinal tracts (GITs) of brown trout (Salmo trutta) from Lake Mahodand, Kalam Swat, Pakistan, at a high altitude of 2865 m above sea level was investigated. For microplastic extraction, samples were digested with H2O2, NaCl solution was added for density separation, and then samples were filtered with a cellulose nitrate filter (pore size 0.45 µ). After this, visual observation and polymer detection with Fourier transform infrared spectroscopy, microplastics were characterized by their shapes, sizes, colors, and polymer types. In the surface water sample, MP particles were found in the range of 0–5 MPs/L, where the mean concentration of MPs was 2.3 ± 1.52 MPs/L and 1.7 ± 1.05 MPs/gastrointestinal tract (GIT) isolated from the GIT of brown trout. Particles of relatively larger size (500–300 µm) were more abundant than other ranges of particles (300–150 and 150–50 µm) in the surface water and fish samples. The fiber was the most abundant shape of MP particles, followed by sheets and fragments in surface water and fish samples (fibers > sheets > fragments). Four types of polymer viz. low-density polyethylene (LDPE) (44.4%), polypropylene homopolymer (PPH) (19.4%), polyvinyl chloride (PVC) (30.5%), and high-density polyethylene (HDPE) (5.5%) were detected by FTIR spectroscopy. The findings of the present study showed that MPs reached into higher altitudes in remote areas due to tourism activities.

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Occurrence of microplastics (MPs) in the gastrointestinal tract of fishes: A global systematic review and meta-analysis and meta-regression

Cited by 50 publications

References 111 publications

Protective efficacy of dietary natural antioxidants on microplastic particles-induced histopathological lesions in African catfish (Clarias gariepinus)

Protective efficacy of dietary natural antioxidants on microplastic particles-induced histopathological lesions in African catfish (Clarias gariepinus)

Microplastics distribution and possible ingestion by fish in lacustrine waters (Lake Bracciano, Italy)

Microplastics in the Surface Water and Gastrointestinal Tract of Salmo trutta from the Mahodand Lake, Kalam Swat in Pakistan

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