Microplastics negatively impact embryogenesis and modulate the immune response of the marine medaka Oryzias melastigma

Chen, Jincan; Chen, Meng-Yun; Fang, Chao; Zheng, Ronghui; Jiang, Yulu; Zhang, Yusheng; Wang, Kejian; Bailey, Christyn; Segner, Helmut; Bo, Jun

doi:10.1016/j.marpolbul.2020.111349

Cited by 58 publications

(35 citation statements)

References 69 publications

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“…Previous studies that used higher microplastic concentrations than the present study reported delayed hatching time, decreased hatching rates, and also altered heart rates of medaka and zebrafish embryos exposed to PS and PET microplastics [11,13,48]. This was presumably caused by hypoxic conditions in the eggs due to aggregation of microplastics on the egg surface that hindered the gas exchange [12,13].…”

Section: Effects Of Microplastic Fibers On Early Life Stagescontrasting

confidence: 43%

“…Changes in embryonic development such as decreased hatching rates and delayed hatching time [11], and changes in blood circulation were reported for fish embryos exposed to polystyrene (PS) spheres and fragments [11,12]. For example, in zebrafish (Danio rerio) exposed to microplastic fragments via the water column, accelerated blood flow velocities and heart rates were explained by hypoxic conditions in the eggs [12].…”

Section: Introductionmentioning

confidence: 99%

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Exposure to microplastic fibers does not change fish early life stage development of three-spined sticklebacks (Gasterosteus aculeatus)

2021

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Microplastic fibers are frequent contaminants of aquatic ecosystems. Early life stages of aquatic organisms are predicted to be especially vulnerable to microplastic pollution. We hypothesized that microplastic fibers in the water column might interfere with fertilization and embryonic development of fish. We tested this with an in vitro fertilization system with three-spined sticklebacks. Six egg clutches were divided and one half was fertilized and bread out in water with polyester fibers (PET fibers; mean diameter 9.7 ± 2.3 μm; mean length 245.6 ± 163.1 μm) at a concentration of 1 × 104 fibers/L while the other half served as control without fibers.Observation with a dissection microscope revealed that some polyester fibers stuck to the outside of the eggs in the fiber treatments. Yet, overall 67.4 ± 12.9% eggs were fertilized from which 97.2 ± 4.2% larvae hatched without any significant difference between treatments. Mortality and abnormal development of larvae was low and was not changed by microplastic fibers, as was the heart rate of developing embryos five days post fertilization.The present study illustrates that polyester fibers, even at concentrations three to four orders above levels reported from the environment, do not impair fertilization success, embryonic and early larval development of sticklebacks. Accordingly, concentrations of microplastic fibers currently observed in aquatic habitats do not appear to be harmful to early live stages of fish.

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Section: Effects Of Microplastic Fibers On Early Life Stagescontrasting

confidence: 43%

Section: Introductionmentioning

confidence: 99%

Exposure to microplastic fibers does not change fish early life stage development of three-spined sticklebacks (Gasterosteus aculeatus)

2021

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“…Direct and indirect consumption of contaminated microplastics could result in biological responses like inflammation, reduced feeding and body weight, and mortality stemming from bioaccumulation (Wright et al, 2013b). The study by Chen et al (2020b) showed that interaction of marine model fish Oryzias melastigma with PS led to alteration of heartbeat, delay in hatching time, and decrease in hatching rate of embryos. According to the transcriptome result, exposure of these embryos to PS led to an increase in diseases as immune responses, genetic formation processing, and metabolism pathway were negatively impacted.…”

Section: Biological Impacts Of Microplastics On Aquatic Organismsmentioning

confidence: 99%

Micro(nano)plastics Prevalence, Food Web Interactions, and Toxicity Assessment in Aquatic Organisms: A Review

et al. 2022

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Plastic pollution is a fast-rising environmental catastrophe. Microplastics and nanoplastics (MNPs) are ubiquitous components of most aquatic environments, and their burgeoning prevalence is endangering aquatic organisms. Recent studies have documented the entanglement of marine and freshwater biota by plastic litters, particularly ghost fishing gear, resulting in suffocation, drowning, or starving to death. Numerous reports have shown that aquatic organisms readily ingest and accumulate these emerging contaminants in their digestive systems. Given experimental evidence that contaminants-laden MNPs can persist in the gastrointestinal tract for considerable durations, investigations have documented a high probability of lethal and sublethal toxicological effects associated with direct and indirect MNPs ingestions. These include chronic protein modulation, DNA damage, embryotoxicity, gastrointestinal toxicity, genotoxicity, growth inhibition toxicity, histopathotoxicity, liver toxicity, neurotoxicity, oxidative stress, reproductive toxicity, and tissue damage. Today, reports have proven the transfer of MNPs across the aquatic food web to humans. However, the mechanisms of multiple contaminants-laden MNPs-induced toxicities, size-dependent toxicity, and the comprehensive mode-of-action and alterations of digestive, reproductive, and neurological systems’ functionality in marine organisms are still unclear. Thus, this review mainly addresses the prevalence, food web interactions, and toxicity assessment of micro(nano) plastics in marine and freshwater organisms. It summarizes documented studies based on the following broad objectives: (1) the occurrence and prevalence of micro(nano) plastic particles in marine and freshwater environments; (2) the ingestion of MNPs by aquatic biota and the food web exposure routes and bioaccumulation of contaminated MNPs by higher trophic entities; (3) the adsorption and desorption of persistent organic pollutants, metals, and chemical additives on/from micro(nano)plastics; and (4) the probable ecotoxicological effects of micro(nano)plastics ingestion on aquatic biota.

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“…The occurrence of microplastics (MPs) in the marine environment has attracted research interests, as the effects of MPs are still poorly understood (Neves et al 2015;Patti et al 2020;Preston-Whyte et al 2021). MPs are often mistaken as prey by marine organisms and when ingested, has the potential to negatively affect nutrient assimilation, reproduction and behavioural changes (Qiao et al 2019;Chen et al 2020). Bioavailable MPs have the potential to transfer embedded/adsorbed contaminants to organism tissues and cells, resulting in acute and chronic toxicity to organisms (Amorim et al 2020;Chen et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…MPs are often mistaken as prey by marine organisms and when ingested, has the potential to negatively affect nutrient assimilation, reproduction and behavioural changes (Qiao et al 2019;Chen et al 2020). Bioavailable MPs have the potential to transfer embedded/adsorbed contaminants to organism tissues and cells, resulting in acute and chronic toxicity to organisms (Amorim et al 2020;Chen et al 2020). Also, MPs have been shown to provide suitable surfaces for the formation of biofilms that could contain harmful pathogens that are then easily transported within aquatic ecosystems (Gong et al 2019;Feng et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Concentrations and Risk Assessment of Metals, Antifouling Paint Particles and Microplastics in Coastal Sediment of a Marina in Simon’s Town, South Africa

Sparks

Awe

2021

Preprint

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Maintenance of maritime vessels includes the removal of paint from hulls that ultimately ends up the aquatic environment. Coastal maritime vessel maintenance is a source of metals, antifouling paint particles (APPs) and microplastics (MPs) that ends up in the coastal environment. Simon’s Town is a small urban town in False Bay, Cape Town, South Africa, where maritime activities take place (there is a naval harbour, marina and boat maintenance facility). The aim of this study was to measure metals, APPs and MPs in Simon’s Town, to assess the impact of maritime activities and a storm water pipe in a protected marina. Sediment samples were collected from 6 sites during winter 2018. Sediment and extracted APPs were analysed for metal content and MPs characterised based on type (visual and polymer), colour and size. Metal and MP fragment concentrations were highest at the slipway of a boatyard / maintenance facility, decreasing with increased distance from the slipway. MP filaments were highest close to the storm water outfall pipe. Our results suggest that boating maintenance facilities are potential sources metals and MP APP fragments, with storm water pipes potential sources of MP filaments. Various indices applied to assessed the potential impacts of metals and MPs, suggests that these contaminants have the potential to severely adversely impact the intertidal ecosystem investigated.

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Microplastics negatively impact embryogenesis and modulate the immune response of the marine medaka Oryzias melastigma

Cited by 58 publications

References 69 publications

Exposure to microplastic fibers does not change fish early life stage development of three-spined sticklebacks (Gasterosteus aculeatus)

Exposure to microplastic fibers does not change fish early life stage development of three-spined sticklebacks (Gasterosteus aculeatus)

Micro(nano)plastics Prevalence, Food Web Interactions, and Toxicity Assessment in Aquatic Organisms: A Review

Concentrations and Risk Assessment of Metals, Antifouling Paint Particles and Microplastics in Coastal Sediment of a Marina in Simon’s Town, South Africa

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