No evidence of spherical microplastics (10-300 μm) translocation in adult rainbow trout (Oncorhynchus mykiss) after a two-week dietary exposure
| Autor: | Paul A. Helm, David G. Poirier, Malak Bayoumi, Chelsea M. Rochman, Joel Kim |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Male
010504 meteorology & atmospheric sciences Trout Polymers Microplastics Chromosomal translocation 010501 environmental sciences 01 natural sciences Dietary Exposure Medicine and Health Sciences Mussels Food science Materials education.field_of_study Multidisciplinary biology Dietary exposure Chemistry Eukaryota Microspheres Macromolecules Osteichthyes Oncorhynchus mykiss Vertebrates Physical Sciences Medicine Female Anatomy Genital Anatomy Research Article Bivalves Science Population Materials Science Food Contamination Excretion Animals Humans Particle Size education Gonads Polystyrene Shellfish 0105 earth and related environmental sciences Nutrition Organisms Reproductive System Biology and Life Sciences Molluscs biology.organism_classification Polymer Chemistry Animal Feed Invertebrates Diet Fish Seafood Food Rainbow trout Zoology Water Pollutants Chemical |
| Zdroj: | PLoS ONE, Vol 15, Iss 9, p e0239128 (2020) PLoS ONE |
| ISSN: | 1932-6203 |
| Popis: | The consumption of fish contaminated with microplastics is often cited as a pathway for human exposure. However, because their guts are generally removed before consumption, exposure may be low compared to other routes such as shellfish, drinking water and dust. Still, microplastics have been found to translocate from the gut to other tissues, making exposure from eating fish fillets or other seafood products a potential concern. To better understand fish as an exposure route for microplastics in humans, we tested hypotheses about whether translocation occurs and if efficiency of translocation is dependent on particle size. We investigated the amount and distribution of fluorescent polyethylene microspheres (10-300 μm) in the gut, liver, fillets and gonads of adult rainbow trout after a two-week dietary exposure. Fish were fed food pellets dosed with up to ~9,800 microspheres per gram of food. Total exposures over the entire experiment ranged from ~80,000-850,000 microspheres per fish. We did not find any particles in the fillets, liver, or gonads of any fish, suggesting that translocation of spherical microplastics of this size range does not occur in adult rainbow trout. The quantity of microplastics found in the gut was also low or absent after a 24-hour depuration period, indicating effective excretion in this laboratory population. This research suggests that the consumption of fish fillets may not be a significant exposure pathway for microspheres >10 μm in size to contaminate humans. Future studies should test for different sizes, morphologies and species to further our understanding. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |