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Ali N, Khan MH, Ali M, Sidra, Ahmad S, Khan A, Nabi G, Ali F, Bououdina M, Kyzas GZ. Insight into microplastics in the aquatic ecosystem: Properties, sources, threats and mitigation strategies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 913:169489. [PMID: 38159747 DOI: 10.1016/j.scitotenv.2023.169489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 12/15/2023] [Accepted: 12/17/2023] [Indexed: 01/03/2024]
Abstract
Globally recognized as emergent contaminants, microplastics (MPs) are prevalent in aquaculture habitats and subject to intense management. Aquaculture systems are at risk of microplastic contamination due to various channels, which worsens the worldwide microplastic pollution problem. Organic contaminants in the environment can be absorbed by and interact with microplastic, increasing their toxicity and making treatment more challenging. There are two primary sources of microplastics: (1) the direct release of primary microplastics and (2) the fragmentation of plastic materials resulting in secondary microplastics. Freshwater, atmospheric and marine environments are also responsible for the successful migration of microplastics. Until now, microplastic pollution and its effects on aquaculture habitats remain insufficient. This article aims to provide a comprehensive review of the impact of microplastics on aquatic ecosystems. It highlights the sources and distribution of microplastics, their physical and chemical properties, and the potential ecological consequences they pose to marine and freshwater environments. The paper also examines the current scientific knowledge on the mechanisms by which microplastics affect aquatic organisms and ecosystems. By synthesizing existing research, this review underscores the urgent need for effective mitigation strategies and further investigation to safeguard the health and sustainability of aquatic ecosystems.
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Affiliation(s)
- Nisar Ali
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian 223003, PR China.
| | - Muhammad Hamid Khan
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian 223003, PR China
| | - Muhammad Ali
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian 223003, PR China
| | - Sidra
- Institute of Chemical Sciences, University of Peshawar, 25120, Pakistan
| | - Shakeel Ahmad
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian 223003, PR China
| | - Adnan Khan
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian 223003, PR China; Institute of Chemical Sciences, University of Peshawar, 25120, Pakistan.
| | - Ghulam Nabi
- Institute of Nature Conservation Polish Academy of Sciences Krakow, Poland
| | - Farman Ali
- Department of Chemistry, Hazara University, Khyber Pakhtunkhwa, Mansehra 21300, Pakistan
| | - Mohamed Bououdina
- Department of Mathematics and Science, Faculty of Humanities and Sciences, Prince Sultan University, Riyadh, Saudi Arabia
| | - George Z Kyzas
- Hephaestus Laboratory, Department of Chemistry, School of Science, International Hellenic University, 654 04 Kavala, Greece.
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2
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Dong Z, Wang WX. Tracking Nano- and Microplastics Accumulation and Egestion in a Marine Copepod by Novel Fluorescent AIEgens: Kinetic Modeling of the Rhythm Behavior. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:20761-20772. [PMID: 38029324 DOI: 10.1021/acs.est.3c04726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Nano- and microplastics (NMPs) are now prevalent in the marine environment. This study quantified the uptake and depuration kinetics of spherical polystyrene NMPs of different particle sizes (200 nm/30 μm) and functional groups (-NH2/-COOH) in a temperate calanoid copepod Calanus sinicus (C. sinicus), which exhibited rhythmic feeding patterns in natural environments. Aggregated-induced emission (AIE) fluorescent probes were employed to track and quantify the kinetics of NMPs with excellent photostability and biocompatibility. The results showed that C. sinicus consumed all NMPs types, with preference of NMPs to small size and amino group. Increased diatom concentrations also inhibited the bioaccumulation of NMPs. Influenced by rhythmic behavior, the bioaccumulation of NMPs by C. sinicus was nonstationary during the 6 h uptake phase. After 1-3 h of rapid uptake, the body burden peaked and then slowly declined. During the 3 h depuration phase, C. sinicus rapidly and efficiently removed NMPs with a mean half-life of only 0.23 h. To further quantify the body burden of C. sinicus under the influence of rhythmic feeding behavior, a biokinetic model was established, and the Markov chain Monte Carlo method was used to estimate the parameter distribution. Our results highlighted that copepods exhibited unique rhythmic feeding behavior under environmentally relevant concentrations of NMPs exposure, which may influence the bioaccumulation, trophic transfer, and environmental fate of NMPs.
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Affiliation(s)
- Zipei Dong
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
- Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
| | - Wen-Xiong Wang
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
- Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen 518057, China
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3
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Mercado B, Valero N, Roca-Pérez L, Bernabeu-Berni E, Andreu-Sánchez O. Investigation of Metal Toxicity on Microalgae Phaeodactylum tricornutum, Hipersaline Zooplankter Artemia salina, and Jellyfish Aurelia aurita. TOXICS 2023; 11:716. [PMID: 37624221 PMCID: PMC10459510 DOI: 10.3390/toxics11080716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/10/2023] [Accepted: 08/15/2023] [Indexed: 08/26/2023]
Abstract
The escalating global anthropogenic activities associated with industrial development have led to the increased introduction of heavy metals (HMs) into marine environments through effluents. This study aimed to assess the toxicity of three HMs (Cr, Cu, and Cd) on organisms spanning different trophic levels: Phaeodactylum tricornutum (a primary producer), Artemia salina (a primary consumer), and Aurelia aurita (a secondary consumer). The EC50 values obtained revealed varying relative toxicities for the tested organisms. Phaeodactylum tricornutum exhibited the highest sensitivity to Cu, followed by Cd and Cr, while Artemia salina displayed the highest sensitivity to Cr, followed by Cu and Cd. A. aurita, on the other hand, demonstrated the highest sensitivity to Cu, followed by Cr and Cd. This experimental investigation further supported previous studies that have suggested A. aurita as a suitable model organism for ecotoxicity testing. Our experiments encompassed sublethal endpoints, such as pulsation frequency, acute effects, and mortality, highlighting different levels of sensitivity among the organisms.
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Affiliation(s)
- Borja Mercado
- Ocean Ecostructures, Inc., Rambla de Catalunya,14-7°-1ª, 08007 Barcelona, Spain;
| | - Nuria Valero
- Xenobiotics, S.L., Parque Científico de la Universitat de València, 46980 Paterna, Spain
| | - Luis Roca-Pérez
- Departamento de Biología Vegetal, Facultad de Farmacia, Universitat de València, 46100 Burjassot, Spain;
| | - Elena Bernabeu-Berni
- Xenobiotics, S.L., Parque Científico de la Universitat de València, 46980 Paterna, Spain
| | - Oscar Andreu-Sánchez
- Departamento de Biología Vegetal, Facultad de Farmacia, Universitat de València, 46100 Burjassot, Spain;
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4
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Hu J, Ye F, Zhang S, Li H, Bao Q, Gan J, Ye Q, Wang W. Multi-dimensional visualization of ingestion, biological effects and interactions of microplastics and a representative POP in edible jellyfish. ENVIRONMENT INTERNATIONAL 2023; 178:108028. [PMID: 37343326 DOI: 10.1016/j.envint.2023.108028] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/05/2023] [Accepted: 06/08/2023] [Indexed: 06/23/2023]
Abstract
Due to their ubiquity and potential risks, microplastics (MPs) and nanoplastics (NPs) are concerning environmental issues. Yet there are still significant knowledge gaps in understanding the tissue-specific accumulation and dynamic change of MPs and NPs in the aquatic organism and how these micro/nano-scale emerging contaminants interact with other environmental pollutants such as persistent organic pollutants (POPs). Here, in vivo imaging systems (IVIS), radioisotope tracing, and histological staining were innovatively used to reveal the fate and toxicity of fluorescently-labeled MPs/NPs and 14C-labeled 2,4,4'-trichlorobiphenyl (PCB28) in edible jellyfish Rhopilema esculentum. These contaminants' ingestion, biological effects, and interactions were visualized at cellular, tissue, and whole-body multidimensional levels. Both MPs and NPs were shown to be preferentially accumulated in the mouthlets of oral arms, and most ingested MPs/NPs were present in the extracellular environment instead of being internalized into the mesoglea. Moreover, the presence of MPs or NPs in the seawater significantly inhibited the bioaccumulation of PCB28 in the jellyfish tissue, thus alleviating physiological alteration, gastric damage, and apoptosis caused by PCB28. This study provides a multi-dimensional visualization strategy to display the distribution and biological effects of typical pollutants in marine organisms and offers new insights for understanding the impacts of MPs/NPs and POPs on marine ecosystems.
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Affiliation(s)
- Jirong Hu
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture of PRC and Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Feiyang Ye
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture of PRC and Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Sufen Zhang
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture of PRC and Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Hao Li
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture of PRC and Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Qian Bao
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture of PRC and Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Jay Gan
- Department of Environmental Sciences, University of California, Riverside, CA 92521, USA
| | - Qingfu Ye
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture of PRC and Zhejiang Province, Zhejiang University, Hangzhou 310058, China
| | - Wei Wang
- Institute of Nuclear Agricultural Sciences, Key Laboratory of Nuclear Agricultural Sciences of Ministry of Agriculture of PRC and Zhejiang Province, Zhejiang University, Hangzhou 310058, China.
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5
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Ahmed ASS, Billah MM, Ali MM, Bhuiyan MKA, Guo L, Mohinuzzaman M, Hossain MB, Rahman MS, Islam MS, Yan M, Cai W. Microplastics in aquatic environments: A comprehensive review of toxicity, removal, and remediation strategies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 876:162414. [PMID: 36868275 DOI: 10.1016/j.scitotenv.2023.162414] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/10/2023] [Accepted: 02/19/2023] [Indexed: 06/18/2023]
Abstract
The occurrence of microplastics (MPs) in aquatic environments has been a global concern because they are toxic and persistent and may serve as a vector for many legacies and emerging pollutants. MPs are discharged to aquatic environments from different sources, especially from wastewater plants (WWPs), causing severe impacts on aquatic organisms. This study mainly aims to review the Toxicity of MPs along with plastic additives in aquatic organisms at various trophic compartments and available remediation methods/strategies for MPs in aquatic environments. Occurrences of oxidative stress, neurotoxicity, and alterations in enzyme activity, growth, and feeding performance were identical in fish due to MPs toxicity. On the other hand, growth inhibition and ROS formation were observed in most of the microalgae species. In zooplankton, potential impacts were acceleration of premature molting, growth retardation, mortality increase, feeding behaviour, lipid accumulation, and decreased reproduction activity. MPs togather with additive contaminants could also exert some toxicological impacts on polychaete, including neurotoxicity, destabilization of the cytoskeleton, reduced feeding rate, growth, survivability and burrowing ability, weight loss, and high rate of mRNA transcription. Among different chemical and biological treatments for MPs, high removal rates have been reported for coagulation and filtration (>86.5 %), electrocoagulation (>90 %), advanced oxidation process (AOPs) (30 % to 95 %), primary sedimentation/Grit chamber (16.5 % to 58.84 %), adsorption removal technique (>95 %), magnetic filtration (78 % to 93 %), oil film extraction (>95 %), and density separation (95 % to 100 %). However, desirable extraction methods are required for large-scale research in MPs removal from aquatic environments.
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Affiliation(s)
- A S Shafiuddin Ahmed
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong; Department of Infectious Diseases and Public Health, City University of Hong Kong, Hong Kong.
| | - Md Masum Billah
- Inter-Departmental Research Centre for Environmental Science-CIRSA, University of Bologna, Ravenna Campus, Italy
| | - Mir Mohammad Ali
- Department of Aquaculture, Sher-e-Bangla Agricultural University, Dhaka, Bangladesh
| | - Md Khurshid Alam Bhuiyan
- Department of Physical Chemistry, Faculty of Marine and Environmental Sciences, University of Cadiz, Cadiz, Spain
| | - Laodong Guo
- School of Freshwater Sciences, University of Wisconsin-Milwaukee, Milwaukee, USA
| | - Mohammad Mohinuzzaman
- Department of Environmental Science and Disaster Management, Noakhali Science and Technology University, Sonapur, Bangladesh
| | - M Belal Hossain
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Sonapur, Bangladesh; School of Engineering and Built Environment, Griffith University, Brisbane, Australia
| | - M Safiur Rahman
- Water Quality Research Laboratory, Chemistry Division, Atomic Energy Center, Atomic Energy Commission, Dhaka, Bangladesh
| | - Md Saiful Islam
- Department of Soil Science, Patuakhali Science and Technology University, Patuakhali, Bangladesh
| | - Meng Yan
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong
| | - Wenlong Cai
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Hong Kong; Department of Infectious Diseases and Public Health, City University of Hong Kong, Hong Kong
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6
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Costa E, Gambardella C, Miroglio R, Di Giannantonio M, Lavorano S, Minetti R, Sbrana F, Piazza V, Faimali M, Garaventa F. Nanoplastic uptake temporarily affects the pulsing behavior in ephyrae of the moon jellyfish Aurelia sp. ECOTOXICOLOGY (LONDON, ENGLAND) 2023:10.1007/s10646-023-02669-0. [PMID: 37269410 DOI: 10.1007/s10646-023-02669-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/24/2023] [Indexed: 06/05/2023]
Abstract
The aim of this study is to investigate for the first time the uptake and ecotoxicological effects of nanoplastics (NPs) in a marine cnidarian. Ephyrae of the moon jellyfish Aurelia sp. of different ages (0 and 7 days old) were exposed to negatively charged polystyrene NPs for 24 h; then, the uptake was assessed through traditional and novel techniques, namely microscopy and three-dimensional (3D) holotomography. Immobility and behavioral responses (frequency of pulsations) of ephyrae were also investigated to clarify if NP toxicity differed along the first life stages. NP uptake was observed in ephyrae thanks to the 3D technique. Such internalization did not affect survival, but it temporarily impaired the pulsation mode only in 0 day old ephyrae. This may be ascribed to the negative charged NPs, contributing to jellyfish behavioral alteration. These findings promote 3D holotomography as a suitable tool to detect NPs in marine organisms. Moreover, this study recommends the use of cnidarians of different ages to better assess NP ecotoxicological effects in these organisms, key components of the marine food web.
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Affiliation(s)
- Elisa Costa
- National Research Council (CNR) - Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment (IAS), Via De Marini 16, 16149, Genova, Italy
| | - Chiara Gambardella
- National Research Council (CNR) - Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment (IAS), Via De Marini 16, 16149, Genova, Italy.
- National Biodiversity Future Center (NBFC) S.c.a.r.l., Piazza Marina 61 (c/o palazzo Steri), Palermo, Italy.
| | - Roberta Miroglio
- National Research Council (CNR) - Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment (IAS), Via De Marini 16, 16149, Genova, Italy
| | - Michela Di Giannantonio
- National Research Council (CNR) - Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment (IAS), Via De Marini 16, 16149, Genova, Italy
- Early PostDoc Mobility Grant - Swiss National Science Foundation, Bern, Switzerland
| | - Silvia Lavorano
- Costa Edutainment SpA - Acquario di Genova, Area Porto Antico, Ponte Spinola, 16128, Genova, Italy
| | - Roberta Minetti
- National Research Council (CNR) - Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment (IAS), Via De Marini 16, 16149, Genova, Italy
| | - Francesca Sbrana
- National Research Council (CNR) - Institute of Biophysics (IBF), Via De Marini 16, 16149, Genova, Italy
- Schaefer SEE srl, Via delle Genziane 96, 16148, Genova, Italy
| | - Veronica Piazza
- National Research Council (CNR) - Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment (IAS), Via De Marini 16, 16149, Genova, Italy
| | - Marco Faimali
- National Research Council (CNR) - Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment (IAS), Via De Marini 16, 16149, Genova, Italy
- National Biodiversity Future Center (NBFC) S.c.a.r.l., Piazza Marina 61 (c/o palazzo Steri), Palermo, Italy
| | - Francesca Garaventa
- National Research Council (CNR) - Institute for the Study of Anthropic Impacts and Sustainability in Marine Environment (IAS), Via De Marini 16, 16149, Genova, Italy
- National Biodiversity Future Center (NBFC) S.c.a.r.l., Piazza Marina 61 (c/o palazzo Steri), Palermo, Italy
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7
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Kalčíková G. Beyond ingestion: Adhesion of microplastics to aquatic organisms. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 258:106480. [PMID: 36948066 DOI: 10.1016/j.aquatox.2023.106480] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 03/03/2023] [Accepted: 03/06/2023] [Indexed: 06/18/2023]
Abstract
The interactions of microplastics with aquatic organisms have been studied primarily using animal species, with dietary ingestion being the most important uptake route. However, recent research indicated that microplastics also interact with biota via bioadhesion. This process has been studied in aquatic macrophytes under laboratory conditions where microplastics adhered to their biomass, but monitoring studies also confirmed that microplastic bioadhesion occurs in other species and in the natural environment. Similarly, microplastics adhere to microorganisms, and in the aquatic environment they can be retained by ubiquitous biofilms. This can occur on a natural substrate such as sediment or rocks, but biofilms are also responsible for enhanced bioadhesion of microplastics to other biotic surfaces such as plant surfaces. Adhesion to these large biotic surfaces could influence the abundance and bioavailability of microplastics in the environment. Only few studies have been conducted on the bioadhesion of microplastics to animals, but their results confirmed that bioadhesion may be even greater than particle ingestion by some animals, such as corals or bivalves. However, the ecotoxicological effects are not yet fully understood and the possible transport of microplastics, e.g. adhered to fish or aquatic insects, also needs to be considered. In summary, bioadhesion seems to be an important process for the interactions of microplastics and biota. Neglecting bioadhesion in an environmental context may limit our understanding of the behavior, fate, and effects of microplastics in the aquatic environment.
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Affiliation(s)
- Gabriela Kalčíková
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, 113 Večna pot, SI-1000 Ljubljana, Slovenia.
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8
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Caldwell J, Loussert-Fonta C, Toullec G, Heidelberg Lyndby N, Haenni B, Taladriz-Blanco P, Espiña B, Rothen-Rutishauser B, Petri-Fink A. Correlative Light, Electron Microscopy and Raman Spectroscopy Workflow To Detect and Observe Microplastic Interactions with Whole Jellyfish. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:6664-6672. [PMID: 37058431 PMCID: PMC10134485 DOI: 10.1021/acs.est.2c09233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 03/30/2023] [Accepted: 03/30/2023] [Indexed: 06/19/2023]
Abstract
Many researchers have turned their attention to understanding microplastic interaction with marine fauna. Efforts are being made to monitor exposure pathways and concentrations and to assess the impact such interactions may have. To answer these questions, it is important to select appropriate experimental parameters and analytical protocols. This study focuses on medusae of Cassiopea andromeda jellyfish: a unique benthic jellyfish known to favor (sub-)tropical coastal regions which are potentially exposed to plastic waste from land-based sources. Juvenile medusae were exposed to fluorescent poly(ethylene terephthalate) and polypropylene microplastics (<300 μm), resin embedded, and sectioned before analysis with confocal laser scanning microscopy as well as transmission electron microscopy and Raman spectroscopy. Results show that the fluorescent microplastics were stable enough to be detected with the optimized analytical protocol presented and that their observed interaction with medusae occurs in a manner which is likely driven by the microplastic properties (e.g., density and hydrophobicity).
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Affiliation(s)
- Jessica Caldwell
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Céline Loussert-Fonta
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
| | - Gaëlle Toullec
- Laboratory
for Biological Geochemistry, School of Architecture, Civil and Environmental
Engineering, Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rte Cantonale, CH-1015 Lausanne, Switzerland
| | - Niclas Heidelberg Lyndby
- Laboratory
for Biological Geochemistry, School of Architecture, Civil and Environmental
Engineering, Ecole Polytechnique Fédérale
de Lausanne (EPFL), Rte Cantonale, CH-1015 Lausanne, Switzerland
| | - Beat Haenni
- Institute
of Anatomy, University of Bern, Baltzerstrasse 2, 3012 Bern, Switzerland
| | - Patricia Taladriz-Blanco
- Water
Quality Group, International Iberian Nanotechnology
Laboratory (INL), Av. Mestre Jose Veiga s/n, 4715-330 Braga, Portugal
| | - Begoña Espiña
- Water
Quality Group, International Iberian Nanotechnology
Laboratory (INL), Av. Mestre Jose Veiga s/n, 4715-330 Braga, Portugal
| | | | - Alke Petri-Fink
- Adolphe
Merkle Institute, University of Fribourg, Chemin des Verdiers 4, 1700 Fribourg, Switzerland
- Department
of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg, Switzerland
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9
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Goldstein J, Javidpour J. Selective feeding protects moon jellyfish (Aurelia aurita s.l.) from overloading with microplastics. MARINE POLLUTION BULLETIN 2023; 188:114702. [PMID: 36791554 DOI: 10.1016/j.marpolbul.2023.114702] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Jellyfish blooms may be important bioindicators for marine ecosystem degradation, including the accumulation of microplastics in pelagic food webs. Here we show growth, respiration and filtration rates of the moon jellyfish (Aurelia aurita s.l.) when fed high concentrations (350 L-1) of zooplankton prey (Artemia salina nauplii) and polystyrene (PS) or reference particles (charcoal; size range 50-500 μm). Our controlled feeding experiments reveal that inedible particles are ingested less efficiently compared to prey (retention efficiency ~60 % for PS) and actively removed from the gastrovascular system of ephyrae and medusae. Increased metabolic demands for excretion of inedible material (up to 76.7 ± 3.1 % of ingested prey biomass) suggest that overloading with microplastics can decelerate growth (observed maxima 26.1 % d-1 and 12.6 % d-1, respectively) and reproductive rates when food is limited. Possible consequences of this selective feeding strategy in response to proceeding microplastic pollution in the world's future oceans are discussed.
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Affiliation(s)
- Josephine Goldstein
- Marine Biological Research Centre, Department of Biology, University of Southern Denmark, Hindsholmvej 11, 5300 Kerteminde, Denmark.
| | - Jamileh Javidpour
- Marine Biological Research Centre, Department of Biology, University of Southern Denmark, Hindsholmvej 11, 5300 Kerteminde, Denmark
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10
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Ge J, Li B, Liao M, Zhang Z, Chen S, Xia B, Wang Y. Ingestion, egestion and physiological effects of polystyrene microplastics on the marine jellyfish Rhopilema esculentum. MARINE POLLUTION BULLETIN 2023; 187:114609. [PMID: 36652861 DOI: 10.1016/j.marpolbul.2023.114609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 01/06/2023] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
Jellyfish are planktonic predators that may be susceptible to ingesting microplastics. However, the effects of MP exposure on jellyfish are poorly understood. In this study, the ingestion and egestion of polystyrene microbeads, and its chronic physiological effects on Rhopilema esculentum at an environmental concentration (100 items/L) and a predicted concentration (1000 items/L) were evaluated. The results showed that the ingestion amount of juvenile medusae was relatively low. The MP egestion rates reached 100 % within 9 h of clearance. Chronic exposure (15 days) to MPs at environmental concentrations led to no adverse impacts. Nevertheless, the predicted concentration of MP exposure induced growth inhibition, a reduction in assimilation efficiency, oxygen consumption increase, and lipase enzyme activity reduction in the jellyfish, indicating that MPs can cause adverse effects on the energy budget of jellyfish in the near future. Our study provides new insights into the potential risk of MPs in marine environments.
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Affiliation(s)
- Jianlong Ge
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Bin Li
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Meijie Liao
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Zheng Zhang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Siqing Chen
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Bin Xia
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China.
| | - Yingeng Wang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China.
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11
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Sucharitakul P, Pitt KA. Towards robust and repeatable methods for studying interactions between jellyfish and microplastics. MARINE ENVIRONMENTAL RESEARCH 2022; 182:105774. [PMID: 36332420 DOI: 10.1016/j.marenvres.2022.105774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Studies of microplastics are increasing exponentially and standard protocols are only beginning to be established. Jellyfish are considered susceptible to ingesting microplastics because they feed on small, suspended particles. Inconsistent approaches used to study interactions between jellyfish and microplastics, however, make comparisons among studies difficult. Here we review aspects of the methods used to sample jellyfish in the field and experimental approaches used in the laboratory to study interactions between jellyfish and microplastics, recommend some standard protocols and identify areas for further research. We highlight the need for experiments to be environmentally relevant, to study a greater diversity of species and to study different life history stages.
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Affiliation(s)
| | - Kylie A Pitt
- Coastal and Marine Research Centre, Australian Rivers Institute, School of Environment and Science, Gold Coast Campus, Griffith University, 4222, Australia.
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12
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Mladinich K, Holohan BA, Shumway SE, Brown K, Ward JE. Determining the Properties that Govern Selective Ingestion and Egestion of Microplastics by the Blue Mussel ( Mytilus edulis) and Eastern Oyster ( Crassostrea virginica). ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:15770-15779. [PMID: 36326805 DOI: 10.1021/acs.est.2c06402] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Suspension feeding bivalve molluscs interact with different types of microplastics (MP) suspended in the water column. Most bivalves are selective suspension feeders and, thus, do not consume all particles to which they are exposed. Selection depends upon the physicochemical properties and size of the particle. Recent work has provided evidence that blue mussels, Mytilus edulis, and eastern oysters, Crassostrea virginica, ingest and egest microspheres (polystyrene) and microfibers (nylon) differently, but whether other factors, such as polymer type and shape, mediate selection have not been explored. To investigate these factors, mussels and oysters were offered similar sized nylon (Ny) and polyester (PES) microfibers or polyethylene (PE) and polystyrene (PS) microspheres, or different sized PES microfibers during a 2 h exposure. Feces and pseudofeces were collected separately and analyzed for MPs, and the data were used to develop a linear regression model for selection. Results demonstrated clear species-specific differences in the efficiency of particle selection. Both mussels and oysters, however, exhibited size-based rejection of PES microfibers, ingesting a higher proportion of shorter fibers than longer fibers. Polymer type did not impact selection of fibers or spheres. The relative size of particles (area and perimeter) was found to be the most important factor in predicting whether a MP will be rejected or ingested.
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Affiliation(s)
- Kayla Mladinich
- Department of Marine Sciences, University of Connecticut, Groton, Connecticut 06340, United States
| | - Bridget A Holohan
- Department of Marine Sciences, University of Connecticut, Groton, Connecticut 06340, United States
| | - Sandra E Shumway
- Department of Marine Sciences, University of Connecticut, Groton, Connecticut 06340, United States
| | - Kevin Brown
- Department of Pharmaceutical Sciences and Department of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, Oregon 97331, United States
| | - J Evan Ward
- Department of Marine Sciences, University of Connecticut, Groton, Connecticut 06340, United States
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13
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Di Giannantonio M, Gambardella C, Miroglio R, Costa E, Sbrana F, Smerieri M, Carraro G, Utzeri R, Faimali M, Garaventa F. Ecotoxicity of Polyvinylidene Difluoride (PVDF) and Polylactic Acid (PLA) Microplastics in Marine Zooplankton. TOXICS 2022; 10:toxics10080479. [PMID: 36006158 PMCID: PMC9416274 DOI: 10.3390/toxics10080479] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/11/2022] [Accepted: 08/13/2022] [Indexed: 05/09/2023]
Abstract
The aim of this study was to investigate the ecotoxicity of polyvinylidene difluoride (PVDF) and polylactic acid (PLA) microplastics (MPs) in two marine zooplankton: the crustacean Artemia franciscana and the cnidarian Aurelia sp. (common jellyfish). To achieve this goal, (i) MP uptake, (ii) immobility, and (iii) behavior (swimming speed, pulsation mode) of crustacean larval stages and jellyfish ephyrae exposed to MPs concentrations (1, 10, 100 mg/L) were assessed for 24 h. Using traditional and novel techniques, i.e., epifluorescence microscopy and 3D holotomography (HT), PVDF and PLA MPs were found in the digestive systems of the crustaceans and in the gelatinous tissue of jellyfish. Immobility was not affected in either organism, while a significant behavioral alteration in terms of pulsation mode was found in jellyfish after exposure to both PVDF and PLA MPs. Moreover, PLA MPs exposure in jellyfish induced a toxic effect (EC50: 77.43 mg/L) on the behavioral response. This study provides new insights into PLA and PVDF toxicity with the potential for a large impact on the marine ecosystem, since jellyfish play a key role in the marine food chain. However, further investigations incorporating additional species belonging to other trophic levels are paramount to better understand and clarify the impact of such polymers at micro scale in the marine environment. These findings suggest that although PVDF and PLA have been recently proposed as innovative and, in the case of PLA, biodegradable polymers, their effects on marine biota should not be underestimated.
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Affiliation(s)
- Michela Di Giannantonio
- Early PostDoc Mobility Grant—Swiss National Science Foundation, 3000 Bern, Switzerland
- Correspondence: (M.D.G.); (C.G.); Tel.: +39-0106476429 (C.G.)
| | - Chiara Gambardella
- Institute for the Study of the Anthropic Impact and Sustainability in the Marine Environment (CNR-IAS), National Research Council, Via de Marini 16, 16149 Genova, Italy
- Correspondence: (M.D.G.); (C.G.); Tel.: +39-0106476429 (C.G.)
| | - Roberta Miroglio
- Institute for the Study of the Anthropic Impact and Sustainability in the Marine Environment (CNR-IAS), National Research Council, Via de Marini 16, 16149 Genova, Italy
| | - Elisa Costa
- Institute for the Study of the Anthropic Impact and Sustainability in the Marine Environment (CNR-IAS), National Research Council, Via de Marini 16, 16149 Genova, Italy
| | - Francesca Sbrana
- Institute of Biophysics (CNR-IBF), National Research Council, Via de Marini 16, 16149 Genova, Italy
- Schaefer SEE srl, Via Luigi Einaudi 23, 45100 Rovigo, Italy
| | - Marco Smerieri
- Institute of Materials for Electronics and Magnetism (CNR-IMEM), National Research Council, Via Dodecaneso 33, 16149 Genova, Italy
| | - Giovanni Carraro
- Institute of Materials for Electronics and Magnetism (CNR-IMEM), National Research Council, Via Dodecaneso 33, 16149 Genova, Italy
| | - Roberto Utzeri
- Institute of Molecular Science and Technologies (CNR-SCITEC), National Research Council, Via de Marini 16, 16149 Genova, Italy
| | - Marco Faimali
- Institute for the Study of the Anthropic Impact and Sustainability in the Marine Environment (CNR-IAS), National Research Council, Via de Marini 16, 16149 Genova, Italy
| | - Francesca Garaventa
- Early PostDoc Mobility Grant—Swiss National Science Foundation, 3000 Bern, Switzerland
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14
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Eom HJ, Lee N, Yum S, Rhee JS. Effects of extremely high concentrations of polystyrene microplastics on asexual reproduction and nematocyst discharge in the jellyfish Sanderia malayensis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 807:150988. [PMID: 34656572 DOI: 10.1016/j.scitotenv.2021.150988] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 10/04/2021] [Accepted: 10/11/2021] [Indexed: 06/13/2023]
Abstract
Numerous studies have assessed the detrimental effects of microplastics (MPs) on aquatic invertebrates due to their ubiquitous and persistent nature. In this study, the toxic effects of MPs were examined on the polyp and ephyrae of the marine hydrozoan Sanderia malayensis. The jellyfish were exposed to different sizes (1-6 μm) of non-functionalized polystyrene microbeads at a concentration of 1 × 104 particles mL-1. The MPs randomly attached to the external and internal parts of the jellyfish body, and the longest MP attachment was 52 days during the depuration after initial exposure (for 24 h). Consistent seventeen-day exposure to MPs significantly reduced the asexual reproduction of the S. malayensis polyps. To assess if the MPs can stimulate nematocyst discharge in polyp and ephyrae stages via direct contact, they were exposed to particle sizes up to 430 μm. None of the MPs or their aggregates, including the 430 μm particles, induced nematocyst discharge. These results suggest that prolonged exposure to relatively high MP concentrations affects the early stages of jellies and provides evidence for the no effect on nematocyst discharge.
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Affiliation(s)
- Hye-Jin Eom
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon 22012, Republic of Korea
| | - Nayoung Lee
- Ecological Risk Research Department, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea
| | - Seungshic Yum
- Ecological Risk Research Department, Korea Institute of Ocean Science and Technology, Geoje 53201, Republic of Korea
| | - Jae-Sung Rhee
- Department of Marine Science, College of Natural Sciences, Incheon National University, Incheon 22012, Republic of Korea; Research Institute of Basic Sciences, Incheon National University, Incheon 22012, Republic of Korea; Yellow Sea Research Institute, Incheon 21999, Republic of Korea.
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15
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Chen CY, Lu TH, Liao CM. Integrated toxicokinetic/toxicodynamic assessment modeling reveals at-risk scleractinian corals under extensive microplastics impacts. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150964. [PMID: 34656596 DOI: 10.1016/j.scitotenv.2021.150964] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 10/03/2021] [Accepted: 10/09/2021] [Indexed: 06/13/2023]
Abstract
Marine microplastics (MPs)-induced threats to shallow-water scleractinian corals are a growing global concern that needs interdisciplinary studies. However, it remains uncertain to what extent the ecotoxicological effects of MPs can explain the potential health impacts on corals at the species-specific scale. Using recent datasets of multiple MPs-induced impacts on coral species, we developed an integrated ecotoxicological modeling approach to quantify the MPs-corals interaction dynamics. Toxicokinetic (TK)-based corals ingestion, egestion, and adhesion processes posed by MPs were comprehensively evaluated. Based on estimated uptake and egestion rates, we showed that corals were much likely to bioaccumulate marine MPs. We applied toxicodynamic (TD) models to appraise time- and concentration-dependent response patterns across MPs-corals systems. We found that marine MPs are highly toxic to corals with a median benchmark concentration causing 10% compromised coral health of 20-40 mg L-1 and a mean growth inhibition rate of ~2% d-1. By providing these key quantitative metrics that may inform scientists to refine existing management strategies to better understand the long-term impact of MPs on coral reef ecosystems. Our TK/TD modeling scheme can help integrating current toxicological findings to encompass a more mechanistic-, ecological-, and process-based understanding of diverse coral ecosystems that are sensitive to MPs stressor varied considerably by species and taxonomic group.
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Affiliation(s)
- Chi-Yun Chen
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei 10617, Taiwan, ROC
| | - Tien-Hsuan Lu
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei 10617, Taiwan, ROC
| | - Chung-Min Liao
- Department of Bioenvironmental Systems Engineering, National Taiwan University, Taipei 10617, Taiwan, ROC.
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16
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Romero-Kutzner V, Tarí J, Herrera A, Martínez I, Bondyale-Juez D, Gómez M. Ingestion of polyethylene microspheres occur only in presence of prey in the jellyfish Aurelia aurita. MARINE POLLUTION BULLETIN 2022; 175:113269. [PMID: 35123273 DOI: 10.1016/j.marpolbul.2021.113269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 12/09/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Microplastic ingestion was studied in A. aurita, a bloom-forming, circumglobal medusa. Here, we determined whether factors such as the concentration of polyethylene microspheres (75-90 μm) or the absence/presence of prey affect the ingestion, duration of microspheres in the gastrovascular cavity (time of presence), and retention time. The presence of polyethylene microspheres' was determined by exposing medusae during 480 min to three different treatments (5000, 10,000, 20,000 particles L-1), and was checked every 10 min to ascertain whether they had incorporated any. Preliminary results show that microsphere ingestion occurred only in the presence of prey (⁓294 Artemia nauplii L-1). The time of presence of microbeads in A. aurita increased (103, 177, and 227 min), with increasing microplastic concentration, and the microbeads were egested within 150 min. This study initiates the understanding of the potential implications that arise of the encounter between jellyfish and microplastic agglomerates, and with perspectives for future research.
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Affiliation(s)
- Vanesa Romero-Kutzner
- Marine Ecophysiology Group (EOMAR), Iu-ECOAQUA, Universidad de Las Palmas de Gran Canaria, 35017 Campus Universitario de Tafira, Canary Islands, Spain.
| | - Javier Tarí
- Marine Ecophysiology Group (EOMAR), Iu-ECOAQUA, Universidad de Las Palmas de Gran Canaria, 35017 Campus Universitario de Tafira, Canary Islands, Spain
| | - Alicia Herrera
- Marine Ecophysiology Group (EOMAR), Iu-ECOAQUA, Universidad de Las Palmas de Gran Canaria, 35017 Campus Universitario de Tafira, Canary Islands, Spain
| | - Ico Martínez
- Marine Ecophysiology Group (EOMAR), Iu-ECOAQUA, Universidad de Las Palmas de Gran Canaria, 35017 Campus Universitario de Tafira, Canary Islands, Spain
| | - Daniel Bondyale-Juez
- Marine Ecophysiology Group (EOMAR), Iu-ECOAQUA, Universidad de Las Palmas de Gran Canaria, 35017 Campus Universitario de Tafira, Canary Islands, Spain
| | - May Gómez
- Marine Ecophysiology Group (EOMAR), Iu-ECOAQUA, Universidad de Las Palmas de Gran Canaria, 35017 Campus Universitario de Tafira, Canary Islands, Spain
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17
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Yusuf A, Sodiq A, Giwa A, Eke J, Pikuda O, Eniola JO, Ajiwokewu B, Sambudi NS, Bilad MR. Updated review on microplastics in water, their occurrence, detection, measurement, environmental pollution, and the need for regulatory standards. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118421. [PMID: 34756874 DOI: 10.1016/j.envpol.2021.118421] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 10/01/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
The gravity of the impending threats posed by microplastics (MPs) pollution in the environment cannot be over-emphasized. Several research studies continue to stress how important it is to curb the proliferation of these small plastic particles with different physical and chemical properties, especially in aquatic environments. While several works on how to monitor, detect and remove MPs from the aquatic environment have been published, there is still a lack of explicit regulatory framework for mitigation of MPs globally. A critical review that summarizes recent advances in MPs research and emphasizes the need for regulatory frameworks devoted to MPs is presented in this paper. These frameworks suggested in this paper may be useful for reducing the proliferation of MPs in the environment. Based on all reviewed studies related to MPs research, we discussed the occurrence of MPs by identifying the major types and sources of MPs in water bodies; examined the recent ways of detecting, monitoring, and measuring MPs routinely to minimize projected risks; and proposed recommendations for consensus regulatory actions that will be effective for MPs mitigation.
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Affiliation(s)
- Ahmed Yusuf
- Chemical Engineering Department, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Ahmed Sodiq
- College of Science and Engineering, Hamad Bin Khalifa University, Doha, Qatar
| | - Adewale Giwa
- Chemical Engineering Department, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
| | - Joyner Eke
- Department of Chemical and Materials Engineering, University of Kentucky, 177 F Paul Anderson Tower Lexington, KY, 40506, USA
| | - Oluwadamilola Pikuda
- Department of Chemical Engineering, McGill University, Montreal, Quebec, H3A 0C5, Canada
| | - Jamiu O Eniola
- Civil and Environmental Engineering Department, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - Bilkis Ajiwokewu
- Chemical and Petroleum Engineering Department, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Nonni Soraya Sambudi
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, Seri Iskandar, Perak, 32610, Malaysia
| | - Muhammad Roil Bilad
- Faculty of Integrated Technologies, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong, BE 1410, Brunei Darussalam
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18
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Devereux R, Hartl MGJ, Bell M, Capper A. The abundance of microplastics in cnidaria and ctenophora in the North Sea. MARINE POLLUTION BULLETIN 2021; 173:112992. [PMID: 34649204 DOI: 10.1016/j.marpolbul.2021.112992] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 09/10/2021] [Accepted: 09/19/2021] [Indexed: 06/13/2023]
Abstract
Microplastic (MP) ingestion has been widely recorded in aquatic organisms, but few studies focus on cnidarians and ctenophores, which form a significant contribution to marine trophic interactions. Scyphozoans (Cyanea capillata, C. lamarckii and Aurelia aurita), hydrozoan (Cosmetira pilosella) and ctenophores (Beroe cucumis and Pleurobrachia bachei) collected opportunistically from Orkney, Shetland and the North Sea were thermally disintegrated, with a subsample of ingested plastics analysed using FTIR. A total of 1,986 MPs were counted (94% fibres), the majority (84.4%) in the four cnidarian species. Highest MP concentrations were recorded in B. cucumis (0.956 ml-1), whilst C. pilosella yielded the lowest (0.014 ml-1). The main polymers in digestate were PET and PP, with 27% discounted as non-plastics. In feeding trials, A. aurita ingested a greater quantity of PET fibres (60-80%), compared to nylon (0%) and HDPE fibres (0%). This study demonstrates cnidarians and ctenophores, a largely overlooked group, are a potential route for MPs entry into food webs.
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Affiliation(s)
- Ria Devereux
- Institute of Life & Earth Sciences, Centre for Marine Biodiversity & Biotechnology, Heriot-Watt University, Edinburgh EH14 4AS, UK; Sustainability Research Institute (SRI), University of East London, Docklands campus, 4-6 University Way, London E16 2RD, UK.
| | - Mark G J Hartl
- Institute of Life & Earth Sciences, Centre for Marine Biodiversity & Biotechnology, Heriot-Watt University, Edinburgh EH14 4AS, UK
| | - Mike Bell
- International Centre for Island Technology (ICIT), Heriot-Watt University, Stromness, Orkney KW16 3AW, UK
| | - Angela Capper
- International Centre for Island Technology (ICIT), Heriot-Watt University, Stromness, Orkney KW16 3AW, UK; CQUniversity, Coastal Marine Ecosystems Research Centre (CMERC), Gladstone, QLD 4680, Australia
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19
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Sucharitakul P, Pitt KA, Welsh DT. Trophic transfer of microbeads to jellyfish and the importance of aging microbeads for microplastic experiments. MARINE POLLUTION BULLETIN 2021; 172:112867. [PMID: 34425362 DOI: 10.1016/j.marpolbul.2021.112867] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Revised: 08/10/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
Concepts in microplastics studies are not well established due to the emerging nature of microplastic research, especially in jellyfish. We conducted experiments to test whether ephyrae would ingest more microbeads via trophic transfer than direct ingestion and whether medusae would ingest more aged microbeads than virgin microbeads. We exposed ephyrae of Aurelia coerulea to two treatments, aged microbeads and Artemia nauplii that had ingested microbeads. We found that the ephyrae ingested 35 times more microbeads via trophic transfer than by direct ingestion. In the second experiment, medusae of A. coerulea were exposed to virgin microbeads and microbeads in seawater under a 12/12 light/dark cycle or constant darkness. Ingestion rates of microbeads from the light incubation were greater than those from the dark incubation or virgin microbeads, suggesting the likely presence of photosynthetic organisms in biofilms from the light incubation increased the palatability of the microbeads and promoted their ingestion.
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Affiliation(s)
- Phuping Sucharitakul
- Coastal and Marine Research Centre, Australian Rivers Institute, School of Environment and Science, Gold Coast Campus, Griffith University, 4222, Australia.
| | - Kylie A Pitt
- Coastal and Marine Research Centre, Australian Rivers Institute, School of Environment and Science, Gold Coast Campus, Griffith University, 4222, Australia
| | - David T Welsh
- School of Environment and Science, Griffith University, Gold Coast Campus, QLD 4215, Australia; Future Industry Institute, University of South Australia, Adelaide, SA 5095, Australia
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20
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Sucharitakul P, Pitt KA, Welsh DT. Assessment of microplastics in discharged treated wastewater and the utility of Chrysaora pentastoma medusae as bioindicators of microplastics. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 790:148076. [PMID: 34090170 DOI: 10.1016/j.scitotenv.2021.148076] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/18/2021] [Accepted: 05/22/2021] [Indexed: 06/12/2023]
Abstract
Microplastics are ubiquitous pollutants in aquatic environments globally. Wastewater treatment plants are considered to be a major source of microplastics and jellyfish have been proposed as potential bioindicators of microplastic pollution. We tested whether treated wastewater influenced the concentration and/or composition of microplastics in the receiving water by comparing the concentration and composition of microplastics in seawater collected in the wastewater plume and at sites distant from treated wastewater releases in the Gold Coast Broadwater, Australia, and at sites within the nearby Tweed River estuaries, which receives >10 times less wastewater discharge. In addition, tiger sea nettle Chrysaora cf. pentostoma medusae were collected to determine whether more microplastics occurred in the guts of the medusae nearby diffusers and whether the microplastics ingested by medusae were representative of those present in the water column. The concentration and composition of microplastics at the wastewater release sites did not significantly differ from sites that were distant from them. Eighty three percent of medusae contained microplastics in their guts and the composition of the ingested microplastics differed significantly from that in the surrounding water. We concluded that discharged treated wastewater had no detectable effect on levels or composition of microplastics in the receiving water and that C. pentostoma are unsuitable bioindicators because the microplastics they ingested did not represent those available in their environment.
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Affiliation(s)
- Phuping Sucharitakul
- Coastal and Marine Research Centre, Australian Rivers Institute, School of Environment and Science, Gold Coast Campus, Griffith University, 4222, Australia.
| | - Kylie A Pitt
- Coastal and Marine Research Centre, Australian Rivers Institute, School of Environment and Science, Gold Coast Campus, Griffith University, 4222, Australia
| | - David T Welsh
- School of Environment and Science, Griffith University, Gold Coast campus, QLD, 4215, Australia; Future Industry Institute, University of South Australia, Adelaide, SA 5095, Australia
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21
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Cao Y, Zhao M, Ma X, Song Y, Zuo S, Li H, Deng W. A critical review on the interactions of microplastics with heavy metals: Mechanism and their combined effect on organisms and humans. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 788:147620. [PMID: 34029813 DOI: 10.1016/j.scitotenv.2021.147620] [Citation(s) in RCA: 127] [Impact Index Per Article: 42.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/30/2021] [Accepted: 05/03/2021] [Indexed: 05/22/2023]
Abstract
Although individual toxicity of microplastics (MPs) to organism has been widely studied, limited knowledge is available on the interactions between heavy metals and MPs, as well as potential biological impacts from their combinations. The interaction between MPs and heavy metals may alter their environmental behaviors, bioavailability and potential toxicity, leading to ecological risks. In this paper, an overview of different sources of heavy metals on MPs is provided. Then the recent achievements in adsorption isotherms, adsorption kinetics and interaction mechanism between MPs and heavy metals are discussed. Besides, the factors that influence the adsorption of heavy metals on MPs such as polymer properties, chemical properties of heavy metals, and other environmental factors are also considered. Furthermore, potential combined toxic effects from MPs and heavy metals on organisms and human health are further summarized.
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Affiliation(s)
- Yanxiao Cao
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China.
| | - Mengjie Zhao
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
| | - Xianying Ma
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
| | - Yongwei Song
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
| | - Shihan Zuo
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
| | - Honghu Li
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
| | - Wenzhuo Deng
- Research Center for Environment and Health, Zhongnan University of Economics and Law, Wuhan 430073, China; School of Information and Safety Engineering, Zhongnan University of Economics and Law, Wuhan 430073, China
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22
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Agathokleous E, Iavicoli I, Barceló D, Calabrese EJ. Micro/nanoplastics effects on organisms: A review focusing on 'dose'. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:126084. [PMID: 34229388 DOI: 10.1016/j.jhazmat.2021.126084] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 04/13/2021] [Accepted: 04/26/2021] [Indexed: 05/17/2023]
Abstract
Microplastics have become predominant contaminants, attracting much political and scientific attention. Despite the massively-increasing research on microplastics effects on organisms, the debate of whether environmental concentrations pose hazard and risk continues. This study critically reviews published literatures of microplastics effects on organisms within the context of "dose". It provides substantial evidence of the common occurrence of threshold and hormesis dose responses of numerous aquatic and terrestrial organisms to microplastics. This finding along with accumulated evidence indicating the capacity of organisms for recovery suggests that the linear-no-threshold model is biologically irrelevant and should not serve as a default model for assessing the microplastics risks. The published literature does not provide sufficient evidence supporting the general conclusion that environmental doses of microplastics cause adverse effects on individual organisms. Instead, doses that are smaller than the dose of toxicological threshold and more likely to occur in the environment may even induce positive effects, although the ecological implications of these responses remain unknown. This study also shows that low doses of microplastics can reduce whereas high doses can increase the negative effects of other pollutants. The mechanisms explaining these findings are discussed, providing a novel perspective for evaluating the risks of microplastics in the environment.
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Affiliation(s)
- Evgenios Agathokleous
- Key Laboratory of Agrometeorology of Jiangsu Province, Department of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology (NUIST), Nanjing 210044, China.
| | - Ivo Iavicoli
- Department of Public Health, University of Naples Federico II, 80131 Naples, Italy
| | - Damià Barceló
- Institute of Environmental Assessment and Water Research, IDAEA-CSIC, C/ Jordi Girona 18-26, 08034 Barcelona, Spain; Catalan Institute for Water Research, ICRA-CERCA, Emili Grahit 101, 17003 Girona, Spain
| | - Edward J Calabrese
- Department of Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA 01003, USA
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23
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Rodrigues SM, Elliott M, Almeida CMR, Ramos S. Microplastics and plankton: Knowledge from laboratory and field studies to distinguish contamination from pollution. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:126057. [PMID: 34004578 DOI: 10.1016/j.jhazmat.2021.126057] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 04/30/2021] [Accepted: 05/04/2021] [Indexed: 06/12/2023]
Abstract
Due to their ubiquitous presence, size and characteristics as ability to adsorb pollutants, microplastics are hypothesized as causing a major impact on smaller organisms, such as plankton. Despite this, there is a need to determine whether these impacts just relate to the environmental presence of the materials or their effects on biological processes. Therefore, we aimed to 1) review current research on plankton and microplastics; 2) compare field and laboratory experimental findings, and 3) identify knowledge gaps. The systematic review showed that 70% of the 147 relevant scientific publications were from laboratory studies and microplastics interactions with plankton were recorded in 88 taxa. Field study publications were relatively scarce and the characteristics of microplastics collected in the field were very different from those used in laboratory experiments thereby limiting the comparison between studies. Our systematic review highlighted knowledge gaps in: 1) the number of field studies; 2) the non-comparability between laboratory and field conditions, and 3) the low diversity of plankton species studied. Furthermore, this review indicated that while there are many studies on contamination by microplastics, the effects of this contamination (i.e., pollution per se) have been less well-studied, especially in the field at population, community, and ecosystem levels.
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Affiliation(s)
- Sabrina M Rodrigues
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research - Porto University, Porto, Portugal; ICBAS - Institute of Biomedical Sciences Abel Salazar - Porto University, Porto, Portugal.
| | - Michael Elliott
- Department of Biological & Marine Sciences, University of Hull, HU6 7RX, UK; International Estuarine & Coastal Specialists Ltd, Leven HU17 5LQ, UK
| | - C Marisa R Almeida
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research - Porto University, Porto, Portugal
| | - Sandra Ramos
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research - Porto University, Porto, Portugal
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24
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Sun T, Zhan J, Li F, Ji C, Wu H. Environmentally relevant concentrations of microplastics influence the locomotor activity of aquatic biota. JOURNAL OF HAZARDOUS MATERIALS 2021; 414:125581. [PMID: 34030420 DOI: 10.1016/j.jhazmat.2021.125581] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/09/2021] [Accepted: 03/02/2021] [Indexed: 05/17/2023]
Abstract
The occurrence of microplastics (MPs) in various marine and freshwater matrices has attracted great attention. However, the effect of MPs in natural environment on the locomotor performance of aquatic biota is still controversial. Therefore, this meta-analysis was conducted, involving 116 effect sizes from 2347 samples, to quantitatively evaluate the alteration in locomotor behavior of aquatic organisms induced by MPs at environmentally relevant concentrations (≤ 1 mg/L, median = 0.125 mg/L). It was shown that MP exposure significantly inhibited the average speed and moved distance of aquatic organisms by 5% and 8% (p < 0.05), respectively, compared with the control, resulting in an obvious reduction of locomotor ability by 6% (p < 0.05). Egger's test indicated that the results were stable without publication bias (p > 0.05). The complex influence of MPs on the locomotor ability were characterized through random-effects meta-regression analyses, presenting size-, time-, concentration-dependent manners and multi-factors interactions. In addition, several physiological changes, including energy reserve reduction, metabolism disorder, gut microbiota dysbiosis, inflammation response, neurotoxic response, and oxidative stress, of aquatic organisms triggered by MP exposure at environmentally relevant concentrations were also provided, which might account for the MPs-induced locomotor activity decline.
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Affiliation(s)
- Tao Sun
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Junfei Zhan
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Fei Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences (CAS), Qingdao 266071, PR China
| | - Chenglong Ji
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences (CAS), Qingdao 266071, PR China
| | - Huifeng Wu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS); Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences (CAS), Qingdao 266071, PR China.
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25
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Wu M, Jiang Y, Kwong RWM, Brar SK, Zhong H, Ji R. How do humans recognize and face challenges of microplastic pollution in marine environments? A bibliometric analysis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 280:116959. [PMID: 33780841 DOI: 10.1016/j.envpol.2021.116959] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/26/2021] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
Microplastics (MPs) are abundant in marine environments, drawing global attention from scientists and rendering it significant to review the research progress and predict future trends of this field. To achieve that, we collected 1898 publications on marine MPs from Web of Science and performed a bibliometric analysis by CiteSpace and VOSviewer. Additionally, we utilized an unrestricted retrieval of literature from ScienceDirect to supplement our major findings. Trends in publication numbers show the growth in study from the initial stage ( 2012 and before), when microplastic (MP) occurrence, abundance, and distribution were primarily investigated. Throughout the ascent stage (between 2013-2016), when diverse sampling and analytical methods were applied to capture and identify MPs from the ocean, baseline data have been gleaned on physiochemical properties of MPs. The research focus then shifted to the bioaccumulation and ecotoxicological effects of MPs on marine biota, further highlighting their potential deleterious impacts on human health via dietary exposure, and this period was defined as the exploration stage (2017 and onwards). Nevertheless, key challenges including the lack of standard procedures for MP sampling, technical limitations in MP detecting and identification, and controversy about the underlying effects on the marine ecosystems and humans have also been arisen in the last decade. The present study elucidates how we gradually recognize MP pollution in marine environments and what challenges we face, suggesting future avenues for MP research.
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Affiliation(s)
- Mengjie Wu
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yuelu Jiang
- Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China
| | - Raymond W M Kwong
- Department of Biology, York University, Toronto, M3J 1P3, Ontario, Canada
| | - Satinder Kaur Brar
- Department of Civil Engineering, Lassonde School of Engineering, York University, North York, Toronto, M3J 1P3, Ontario, Canada
| | - Huan Zhong
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China; Environmental and Life Sciences Program (EnLS), Trent University, Peterborough, Ontario, Canada.
| | - Rong Ji
- State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
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26
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Murano C, Donnarumma V, Corsi I, Casotti R, Palumbo A. Impact of Microbial Colonization of Polystyrene Microbeads on the Toxicological Responses in the Sea Urchin Paracentrotus lividus. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:7990-8000. [PMID: 34018718 DOI: 10.1021/acs.est.1c00618] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The sea urchin Paracentrotus lividus (P. lividus) was exposed to either virgin or biofilm-covered polystyrene microbeads (micro-PS, 45 μm) in order to test the effect of microbial colonization on the uptake, biodistribution, and immune response. The biofilm was dominated by bacteria, as detected by scanning electron microscopy and 16S rRNA sequencing. A higher internalization rate of colonized micro-PS inside sea urchins compared to virgin ones was detected, suggesting a role of the plastisphere in the interaction. Colonized and virgin micro-PS showed the same biodistribution pattern by accumulating mainly in the digestive system with higher levels and faster egestion rates for the colonized. However, a significant increase of catalase and total antioxidant activity was observed only in the digestive system of colonized micro-PS-exposed individuals. Colonized micro-PS also induced a significant decrease in the number of coelomocytes with a significant increase in vibratile cells, compared to control and virgin micro-PS-exposed animals. Moreover, a general time-dependent increase in the red/white amoebocytes ratio and reactive oxygen species and a decrease in nitrogen ones were observed upon exposure to both colonized and virgin micro-PS. Overall, micro-PS colonization clearly affected the uptake and toxicological responses of the Mediterranean sea urchin P. lividus in comparison to virgin micro-PS.
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Affiliation(s)
- Carola Murano
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Villa Comunale, Naples 80121, Italy
- Department of Physical, Earth and Environmental Sciences, University of Siena, Via Mattioli, 4, Siena 53100, Italy
| | - Vincenzo Donnarumma
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, Naples 80121, Italy
| | - Ilaria Corsi
- Department of Physical, Earth and Environmental Sciences, University of Siena, Via Mattioli, 4, Siena 53100, Italy
| | - Raffaella Casotti
- Department of Integrative Marine Ecology, Stazione Zoologica Anton Dohrn, Villa Comunale, Naples 80121, Italy
| | - Anna Palumbo
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Villa Comunale, Naples 80121, Italy
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27
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Rapp J, Herrera A, Bondyale-Juez DR, González-Pleiter M, Reinold S, Asensio M, Martínez I, Gómez M. Microplastic ingestion in jellyfish Pelagia noctiluca (Forsskal, 1775) in the North Atlantic Ocean. MARINE POLLUTION BULLETIN 2021; 166:112266. [PMID: 33770553 DOI: 10.1016/j.marpolbul.2021.112266] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 03/09/2021] [Accepted: 03/09/2021] [Indexed: 05/24/2023]
Abstract
The present study is the first evidence-based study about the ingestion of plastic and microplastics in jellyfish Pelagia noctiluca in the North Atlantic Ocean. A bloom of this organism was collected from Gran Canaria Island coast. It was digested using KOH to quantify the plastic particles and by separating the umbrella from tentacles. About 97% of the organisms analysed showed the presence of microdebris. The majority of the microfibers were with blue or uncorrected fibre concentrations and mainly composed of cotton. Their presence in the gastrovascular cavity of the jellyfish was confirmed. These results warn about the impact of various factors such as jellyfish health, the transfer to jellyfish predators, human consumption of jelly fish, and the transport of carbon and microplastics in the water column.
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Affiliation(s)
- Jorge Rapp
- Marine Ecophysiology Group (EOMAR), IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Campus Universitario de Tafira, Las Palmas de Gran Canaria, Canary Islands, Spain.
| | - Alicia Herrera
- Marine Ecophysiology Group (EOMAR), IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Campus Universitario de Tafira, Las Palmas de Gran Canaria, Canary Islands, Spain; Asociación para la Conservación Medioambiental Latitud Azul, Av Mesa y López 57-15A, Las Palmas de Gran Canaria, Spain.
| | - Daniel R Bondyale-Juez
- Marine Ecophysiology Group (EOMAR), IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Campus Universitario de Tafira, Las Palmas de Gran Canaria, Canary Islands, Spain.
| | - Miguel González-Pleiter
- Departamento de Biología, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco, E-28049 Madrid, Spain.
| | - Stefanie Reinold
- Marine Ecophysiology Group (EOMAR), IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Campus Universitario de Tafira, Las Palmas de Gran Canaria, Canary Islands, Spain.
| | - Maite Asensio
- Asociación para la Conservación Medioambiental Latitud Azul, Av Mesa y López 57-15A, Las Palmas de Gran Canaria, Spain.
| | - Ico Martínez
- Marine Ecophysiology Group (EOMAR), IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Campus Universitario de Tafira, Las Palmas de Gran Canaria, Canary Islands, Spain.
| | - May Gómez
- Marine Ecophysiology Group (EOMAR), IU-ECOAQUA, Universidad de Las Palmas de Gran Canaria, Campus Universitario de Tafira, Las Palmas de Gran Canaria, Canary Islands, Spain.
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28
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Paladino O, Moranda A. Human Health Risk Assessment of a pilot-plant for catalytic pyrolysis of mixed waste plastics for fuel production. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124222. [PMID: 33172677 DOI: 10.1016/j.jhazmat.2020.124222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/24/2020] [Accepted: 10/06/2020] [Indexed: 06/11/2023]
Abstract
Dioxins, PCBs and VOCs are the main hazardous chemicals emitted by gaseous streams from catalytic pyrolysis of waste plastics. In this work we propose a methodology to assess toxic and cancer risk under uncertainty, due to inhalation and ingestion of these chemicals by considering complex scenarios, as repeated start-ups and short continuous operation that may occur in a pilot-plant. Different simulation tools are combined to evaluate the expected concentration of pollutants in the environmental compartments and food. Hazard Index and Cancer Risk remain under the threshold for both dioxins (HI < 0.012, CR < 5.03 10-7) and PCBdl (HI < 1.3 10-7, CR < 2.49 10-12) in all the simulated scenarios, also for the worst case of children ingesting vegetables and meat and uncertainty factors up to 1000. Different results are obtained for VOCs since repeated leakages during the pilot-plant operation are possible. All the risk indexes for benzene are under the threshold (HI < 0.175, CR < 1.41 10-7); acute toxic risk due to inhalation and cancer risk due to ingestion of grain/vegetables are over the threshold if all the uncertainties are considered. Lesson learned: HHRA is important also during scale-up; pilot-plants for pyrolysis of waste plastics must always be equipped with all the abatement systems designed for the final plant.
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Affiliation(s)
- Ombretta Paladino
- Department of Civil, Chemical and Environmental Engineering, University of Genoa, Italy.
| | - Arianna Moranda
- Department of Civil, Chemical and Environmental Engineering, University of Genoa, Italy
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29
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Zitouni N, Bousserrhine N, Missawi O, Boughattas I, Chèvre N, Santos R, Belbekhouche S, Alphonse V, Tisserand F, Balmassiere L, Dos Santos SP, Mokni M, Guerbej H, Banni M. Uptake, tissue distribution and toxicological effects of environmental microplastics in early juvenile fish Dicentrarchus labrax. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:124055. [PMID: 33265060 DOI: 10.1016/j.jhazmat.2020.124055] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/08/2020] [Accepted: 09/20/2020] [Indexed: 05/12/2023]
Abstract
As the smallest environmental microplastics (EMPs), even at nanoscale, are increasingly present in the environment, their availability and physical and chemical effects on marine organisms are poorly documented. In the present study, we primarily investigated the uptake and accumulation of a mixture of environmental microplastics (EMPs) obtained during an artificial degradation process in early-juvenile sea bass (Dicentrarchus labrax). Moreover, we evaluated their hazardous effects using biochemical markers of cytotoxicity. Polymer distribution and composition in gill, gut, and liver were analyzed using polarized light microscopy (PLM) and Raman microspectroscopy (RMS). Our findings revealed the size-dependent ingestion and accumulation of smaller MPs (0.45-3 µm) in fish tissues even after a short-term exposure (3 and 5 days). In addition to MPs, our results showed the presence of plastic additives including plasticizers, flame retardants, curing agents, heat stabilizers, and fiber-reinforced plastic materials in fish tissues, which contributed mostly to the larger-sized range (≥ 1.2 µm). Our data showed that significant oxidative alterations were highly correlated with MPs size range. Our results emphasized that the toxicity of smaller EMPs (≤ 3 µm) was closely related to different factors, including the target tissue, exposure duration, size range of MPs, and their chemical properties.
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Affiliation(s)
- Nesrine Zitouni
- Laboratory of Biochemistry and Environmental Toxicology, Higher Institute of Agronomy, University of Sousse, Tunisia; Higher Institute of Biotechnologie of Monastir, University of Monastir, Monastir, Tunisia
| | - Noureddine Bousserrhine
- Laboratory Water, Environment and Urban Systems, University Paris-Est Créteil, Faculty of Science and Technology, Créteil Cedex, France
| | - Omayma Missawi
- Laboratory of Biochemistry and Environmental Toxicology, Higher Institute of Agronomy, University of Sousse, Tunisia; Higher Institute of Biotechnologie of Monastir, University of Monastir, Monastir, Tunisia
| | - Iteb Boughattas
- Laboratory of Biochemistry and Environmental Toxicology, Higher Institute of Agronomy, University of Sousse, Tunisia
| | - Nathalie Chèvre
- IDYST, Faculty of Geosciences and the Environment, University of Lausanne, Géopolis 3630, CH-1015 Lausanne, Switzerland
| | - Raphael Santos
- HEPIA, University of Applied Sciences Western Switzerland, Ecology and Engineering of Aquatic Systems Research Group, 150 Route de Presinge, CH-1254 Jussy, Switzerland
| | - Sabrina Belbekhouche
- Paris-Est Institute of Chemistry and Materials, UMR 7182 CNRS-Université Paris-Est Créteil Val-de-Marne, 2 rue Henri Dunant, 94320 Thiais, France
| | - Vanessa Alphonse
- Laboratory Water, Environment and Urban Systems, University Paris-Est Créteil, Faculty of Science and Technology, Créteil Cedex, France
| | - Floriane Tisserand
- IDYST, Faculty of Geosciences and the Environment, University of Lausanne, Géopolis 3630, CH-1015 Lausanne, Switzerland
| | - Ludivine Balmassiere
- IDYST, Faculty of Geosciences and the Environment, University of Lausanne, Géopolis 3630, CH-1015 Lausanne, Switzerland
| | - Sofia Pereira Dos Santos
- IDYST, Faculty of Geosciences and the Environment, University of Lausanne, Géopolis 3630, CH-1015 Lausanne, Switzerland
| | - Moncef Mokni
- Department of Pathology, CHU Farhat Hached, Sousse, Tunisia
| | - Hamadi Guerbej
- Laboratory of Blue Biotechnology and Aquatic Bioproducts (B3Aqua), National Institute of Marine Sciences and Technologies (INSTM), Monastir Center, Monastir, Tunisia
| | - Mohamed Banni
- Laboratory of Biochemistry and Environmental Toxicology, Higher Institute of Agronomy, University of Sousse, Tunisia; Higher Institute of Biotechnologie of Monastir, University of Monastir, Monastir, Tunisia.
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30
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Khalid N, Aqeel M, Noman A, Hashem M, Mostafa YS, Alhaithloul HAS, Alghanem SM. Linking effects of microplastics to ecological impacts in marine environments. CHEMOSPHERE 2021; 264:128541. [PMID: 33059282 DOI: 10.1016/j.chemosphere.2020.128541] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 09/19/2020] [Accepted: 10/04/2020] [Indexed: 05/20/2023]
Abstract
Recently, efforts to determine the ecological impacts of microplastic pollutants have increased because of plastic's accelerated contamination of the environment. The tiny size, variable surface topography, thermal properties, bioavailability and biological toxicity of microplastics all offer opportunities for these pollutants to negatively impact the environment. Additionally, various inorganic and organic chemicals sorbed on these particles may pose a greater threat to organisms than the microplastics themselves. However, there is still a big knowledge gap in the assessment of various toxicological effects of microplastics in the environment. Ecological risk assessment of microplastics has become more challenging with the current data gaps. Thus, a current literature review and identification of the areas where research on ecology of microplastics can be extended is necessary. We have provided an overview of various aspects of microplastics by which they interact negatively or positively with marine organisms. We hypothesize that biogeochemical interactions are critical to fully understand the ecological impacts, movement, and fate of microplastics in oceans. As microplastics are now ubiquitous in marine environments and impossible to remove, we recommend that it's not too late to converge research on plastic alternatives. In addition, strict actions should be taken promptly to prevent plastics from entering the environment.
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Affiliation(s)
- Noreen Khalid
- Department of Botany, Government College Women University, Sialkot, Pakistan.
| | - Muhammad Aqeel
- State Key Laboratory of Grassland Agroecosystems, School of Life Science, Lanzhou University, Lanzhou, Gansu, PR China
| | - Ali Noman
- Department of Botany, Government College University, Faisalabad, Pakistan
| | - Mohamed Hashem
- King Khalid University, College of Science, Department of Biology, Abha 61413, Saudi Arabia; Assiut University, Faculty of Science, Botany and Microbiology Department, Assiut, 71516, Egypt
| | - Yasser S Mostafa
- King Khalid University, College of Science, Department of Biology, Abha 61413, Saudi Arabia
| | | | - Suliman M Alghanem
- Biology Department, Faculty of Science, Tabuk University, Tabuk, Saudi Arabia
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31
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Cormier B, Gambardella C, Tato T, Perdriat Q, Costa E, Veclin C, Le Bihanic F, Grassl B, Dubocq F, Kärrman A, Van Arkel K, Lemoine S, Lagarde F, Morin B, Garaventa F, Faimali M, Cousin X, Bégout ML, Beiras R, Cachot J. Chemicals sorbed to environmental microplastics are toxic to early life stages of aquatic organisms. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111665. [PMID: 33396175 DOI: 10.1016/j.ecoenv.2020.111665] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 11/10/2020] [Accepted: 11/12/2020] [Indexed: 05/24/2023]
Abstract
Microplastics are ubiquitous in aquatic ecosystems, but little information is currently available on the dangers and risks to living organisms. In order to assess the ecotoxicity of environmental microplastics (MPs), samples were collected from the beaches of two islands in the Guadeloupe archipelago, Petit-Bourg (PB) located on the main island of Guadeloupe and Marie-Galante (MG) on the second island of the archipelago. These samples have a similar polymer composition with mainly polyethylene (PE) and polypropylene (PP). However, these two samples are very dissimilar with regard to their contamination profile and their toxicity. MPs from MG contain more lead, cadmium and organochlorine compounds while those from PB have higher levels of copper, zinc and hydrocarbons. The leachates of these two samples of MPs induced sublethal effects on the growth of sea urchins and on the pulsation frequency of jellyfish ephyrae but not on the development of zebrafish embryos. The toxic effects are much more marked for samples from the PB site than those from the MG site. This work demonstrates that MPs can contain high levels of potentially bioavailable toxic substances that may represent a significant ecotoxicological risk, particularly for the early life stages of aquatic animals.
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Affiliation(s)
- Bettie Cormier
- Bordeaux University, EPOC, UMR CNRS University of Bordeaux EPHE 5805, Avenue des Facultés, 33400 Talence, France; Man-Technology-Environment Research Centre, School of Science and Technology, Örebro University, Fakultetsgatan 1, 701 82 Örebro, Sweden.
| | - Chiara Gambardella
- Institute for the study of Anthropic Impacts and Sustainability in Marine Environment - National Research Council (CNR-IAS), Genova, Italy
| | - Tania Tato
- Faculty of Marine Sciences, University of Vigo, E-36310 Vigo, Galicia, Spain
| | - Quentin Perdriat
- Bordeaux University, EPOC, UMR CNRS University of Bordeaux EPHE 5805, Avenue des Facultés, 33400 Talence, France
| | - Elisa Costa
- Institute for the study of Anthropic Impacts and Sustainability in Marine Environment - National Research Council (CNR-IAS), Genova, Italy
| | - Cloé Veclin
- CNRS/University of Pau & Pays Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l'Environnement et les Matériaux, UMR 5254, 64000, Pau, France
| | - Florane Le Bihanic
- Bordeaux University, EPOC, UMR CNRS University of Bordeaux EPHE 5805, Avenue des Facultés, 33400 Talence, France
| | - Bruno Grassl
- CNRS/University of Pau & Pays Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l'Environnement et les Matériaux, UMR 5254, 64000, Pau, France
| | - Florian Dubocq
- Man-Technology-Environment Research Centre, School of Science and Technology, Örebro University, Fakultetsgatan 1, 701 82 Örebro, Sweden
| | - Anna Kärrman
- Man-Technology-Environment Research Centre, School of Science and Technology, Örebro University, Fakultetsgatan 1, 701 82 Örebro, Sweden
| | - Kim Van Arkel
- Race for Water Foundation, Lausanne 1007, Switzerland
| | - Soazig Lemoine
- Laboratoire de biologie marine, Université des Antilles, French West Indies, Campus de Fouillole, BP 592, 97117, Pointe-à-Pitre, France
| | - Fabienne Lagarde
- Institut des Molécules et Matériaux du Mans (IMMM, UMR CNRS 6283), Université du Maine, Avenu Olivier Messiaen, F-72085 Le Mans, France
| | - Bénédicte Morin
- Bordeaux University, EPOC, UMR CNRS University of Bordeaux EPHE 5805, Avenue des Facultés, 33400 Talence, France
| | - Francesca Garaventa
- Institute for the study of Anthropic Impacts and Sustainability in Marine Environment - National Research Council (CNR-IAS), Genova, Italy
| | - Marco Faimali
- Institute for the study of Anthropic Impacts and Sustainability in Marine Environment - National Research Council (CNR-IAS), Genova, Italy
| | - Xavier Cousin
- MARBEC, University of Montpellier, CNRS, IFREMER, IRD, 34250 Palavas-les-Flots, France; University of Paris-Saclay, AgroParisTech, INRAE, GABI, 78350 Jouy-en-Josas, France
| | - Marie-Laure Bégout
- MARBEC, University of Montpellier, CNRS, IFREMER, IRD, 34250 Palavas-les-Flots, France
| | - Ricardo Beiras
- Faculty of Marine Sciences, University of Vigo, E-36310 Vigo, Galicia, Spain
| | - Jérôme Cachot
- Bordeaux University, EPOC, UMR CNRS University of Bordeaux EPHE 5805, Avenue des Facultés, 33400 Talence, France.
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da Costa Araújo AP, Malafaia G. Microplastic ingestion induces behavioral disorders in mice: A preliminary study on the trophic transfer effects via tadpoles and fish. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123263. [PMID: 32629346 DOI: 10.1016/j.jhazmat.2020.123263] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 05/04/2023]
Abstract
In this study, the hypothesis that polyethylene microplastics (MPs) can accumulate in animals, reach the upper trophic level and trigger behavioral changes was tested. Physalaemus cuvieri tadpoles were exposed to MPs (for 7 days) and fed on tambatinga fish for the same period. Subsequently, these fish were given as food to Swiss mice. The MP amount in animals' liver was quantified and results have evidenced its accumulation at all assessed trophic levels [tadpole: 18,201.9 particles/g; fish: 1.26 particles/g; mice receiving tambatingas who had fed on tadpoles exposed to MPs: 57.07 particles/g and mice receiving water added with MPs: 89.12 particles/g). Such accumulation in the last group was associated with shorter traveled distance, slower locomotion speed and higher anxiety index in the open field test. Mice receiving tambatingas who had fed on tadpoles exposed to MPs were confronted to a potential predator and showed responses similar to those of animals who had ingested water added with MPs (lack of defensive social aggregation and reduced risk assessment behavior). Thus, results have preliminarily confirmed the initial hypothesis about how MPs in water can reach terrestrial trophic levels and have negative impact on the survival of these animals.
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Affiliation(s)
- Amanda Pereira da Costa Araújo
- Biological Research Laboratory, Post-Graduation Program in Conservation of Cerrado Natural Resources, Goiano Federal Institute, Urutaí Campus, Urutaí, GO, Brazil
| | - Guilherme Malafaia
- Biological Research Laboratory, Post-Graduation Program in Conservation of Cerrado Natural Resources, Goiano Federal Institute, Urutaí Campus, Urutaí, GO, Brazil.
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Perspectives on Micro(Nano)Plastics in the Marine Environment: Biological and Societal Considerations. WATER 2020. [DOI: 10.3390/w12113208] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Marine litter is a global problem which has been negatively affecting the environment. Plastic materials are the most commonly found marine debris, with potential biological (not only for aquatic organisms but also for humans) as well as socio-economic impacts. Considering that it is an anthropogenic problem, society could play an important role to minimize it. Although a considerable amount of research has addressed the biological effects of plastics (micro(nano)plastics) on biota, few studies have addressed how scientific information is being transmitted to the public and the potential role of citizen environmental education. The current paper discusses known effects, researched topics and how scientific knowledge is currently being transmitted to the public.
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Iliff SM, Wilczek ER, Harris RJ, Bouldin R, Stoner EW. Evidence of microplastics from benthic jellyfish (Cassiopea xamachana) in Florida estuaries. MARINE POLLUTION BULLETIN 2020; 159:111521. [PMID: 32763558 DOI: 10.1016/j.marpolbul.2020.111521] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 07/25/2020] [Accepted: 07/25/2020] [Indexed: 06/11/2023]
Abstract
Plastic pollution is a concern in many nearshore ecosystems, and it is critical to understand how microplastics (plastics <5 mm in length) affect nearshore marine biota. Here, we report the presence of microplastics in the benthic, upside-down jellyfish (Cassiopea xamachana) across three estuaries in south Florida. Microplastics were recovered from Cassiopea using an acid digestion, then enumerated via microscopy, and identified using micro Fourier-transform interferometer (μFTIR) analysis. Out of 115 specimens analyzed, 77% contained microplastics. Bell diameter and number of plastics per individual varied significantly across locations with the highest plastic densities and bell diameter observed in individuals from Big Pine Key, followed by Jupiter, and Sarasota. μFTIR analysis confirmed that synthetic microfibers were the dominant microplastic measured at all three locations and may indicate Cassiopea as potential sinks of microplastic. Cassiopea may be used as bioindicators of microplastic contamination in the future, allowing for potential plastic pollution mitigation.
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Affiliation(s)
- Samantha M Iliff
- Department of Ecology and Evolutionary Biology, University of Michigan, 1105 N University Ave, Ann Arbor, MI 48109, USA; Florida Atlantic University Harriet L. Wilkes Honors College, 5353 Parkside Dr., Jupiter, FL 33458, USA.
| | - Eliza R Wilczek
- Department of Natural and Applied Sciences, Bentley University, 175 Forest St, North Waltham, MA 02452, USA.
| | - Rachel J Harris
- Florida Atlantic University Harriet L. Wilkes Honors College, 5353 Parkside Dr., Jupiter, FL 33458, USA; Loxahatchee River District, WildPine Ecological Laboratory, 2500 Jupiter Park Dr., Jupiter, FL 33458, USA.
| | - Ryan Bouldin
- Department of Natural and Applied Sciences, Bentley University, 175 Forest St, North Waltham, MA 02452, USA.
| | - Elizabeth W Stoner
- Department of Natural and Applied Sciences, Bentley University, 175 Forest St, North Waltham, MA 02452, USA.
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Sucharitakul P, Pitt KA, Welsh DT. Limited ingestion, rapid egestion and no detectable impacts of microbeads on the moon jellyfish, Aurelia aurita. MARINE POLLUTION BULLETIN 2020; 156:111208. [PMID: 32366368 DOI: 10.1016/j.marpolbul.2020.111208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/22/2020] [Accepted: 04/22/2020] [Indexed: 05/24/2023]
Abstract
Jellyfish are voracious planktonic predators that may be susceptible to ingesting microplastics. We measured rates of ingestion and egestion of microbeads by Aurelia aurita (Scyphozoa) and evaluated whether ingesting microbeads affected metabolism or gut epithelia. Ingestion rates were measured by exposing medusae to microbeads and randomly sampling them 6 times over a 32 h period to determine the number of microbeads in their tissues. Egestion rates were measured by exposing medusae to microbeads for 1 h before transferring them to kreisels without microbeads and sampling them 6 times over 8 h. Respiration rates of medusae were determined using incubations and potential damage to gut epithelia was evaluated using histopathology. Medusae ingested few microbeads and egested them within 8 h. Microbeads had no effect on respiration and the histology. We concluded that the medusae may recognise microbeads as non-food particles and that their ingestion caused undetectable physiological and histological harm.
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Affiliation(s)
- Phuping Sucharitakul
- Australian Rivers Institute, School of Environment and Science, Griffith University, Australia.
| | - Kylie A Pitt
- Australian Rivers Institute, School of Environment and Science, Griffith University, Australia
| | - David T Welsh
- Environment Futures Research Institute, School of Environment and Science, Griffith University, Australia
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