Assessing microplastic uptake and impact on omnivorous juvenile white seabream Diplodus sargus (Linnaeus, 1758) under laboratory conditions

Müller, Carolin; Erzini, Karim; Teodósio, Maria Alexandra; Pousão-Ferreira, Pedro; Baptista, Vânia; Ekau, Werner

doi:10.1016/j.marpolbul.2020.111162

Cited by 21 publications

(12 citation statements)

References 58 publications

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“…duration, routes, and concentrations) often raise the question of ecological relevance. At the same time, a growing number of publications, mainly short-term exposure, report that MPs ingestion induced no or limited toxicity [35,45,[56][57][58][59][60][61]. Taken all together, these results also suggest that short-term exposures are not relevant to evaluate MPs toxicity and a fortiori to evaluate toxicity at environmental concentrations.…”

Section: Introductionmentioning

confidence: 94%

“…In most cases, classical ecotoxicology biomarkers are used and outcomes are very variable including modification of these biomarkers with particular activation of detoxication and inflammatory processes, oxidative stress, and induction of cellular necrosis [47, 49, 50, 53 , 54]. A growing number of articles also report that exposure to MPs has no or very limited effects on fish considering the same biomarkers [35,45,[56][57][58][59][60]88]. Studies reporting toxic effects of MPs at the tissue level are even scarcer.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

See 1 more Smart Citation

Chronic feeding exposure to virgin and spiked microplastics disrupts essential biological functions in teleost fish

Cormier

Bihanic

Cabar

et al. 2021

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 94%

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Chronic feeding exposure to virgin and spiked microplastics disrupts essential biological functions in teleost fish

Cormier

Bihanic

Cabar

et al. 2021

Journal of Hazardous Materials

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“…Observed interactions between microplastic and marine biota have led to distinct findings, implying physiological consequences when organisms confuse microplastic particles with food. Previous studies have found that uptake of microplastics can potentially lead to depleted energy reserves as a result of intestinal blockages, egestion efforts or false satiation in fish, crabs and worms (Wright et al 2013;Watts et al 2015;Müller et al 2020). Furthermore, microplastic particles permeate marine food webs, magnifying potential impacts across multiple trophic levels (Andrady 2011;Lusher 2015).…”

Section: Introductionmentioning

confidence: 99%

Microplastics alter feeding strategies of a coral reef organism

Joppien

Westphal

Stuhr

et al. 2022

Limnol Oceanogr Letters

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Increasing marine microplastic pollution has detrimentally impacted organismal physiology and ecosystem functioning. While previous studies document negative effects of microplastics on coral reef animals, the potential responses of organisms such as large benthic foraminifera (LBF) are largely unknown. Here, we document the impact of microplastics on heterotrophic feeding behavior of LBF. Specimens of Amphistegina gibbosa were incubated in three experimental treatments: (1) Artemia sp. nauplii only; (2) pristine microplastic particles only; and (3) choice of nauplii and pristine microplastic. Feeding responses were evaluated 24 h after initiation of treatments. A separate experiment was conducted to compare the effect of conditioned vs. pristine microplastic. Our results indicate that A. gibbosa is able to selectively feed on Artemia, avoiding interactions with pristine microplastic. However, the presence of conditioned microplastic causes similar feeding interaction rates as with Artemia. This suggests that microplastics with longer residence times may have a larger impact on facultative detritivores.

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“…These differences were mirrored in significantly reduced SGR values and an increased FCR for this group. Exposure experiments carried out in other studies have revealed significantly reduced growth rates but the scale of the effect varies, presumably as a result of differences in the duration of studies, in the age of fish and the type of MP particle used [62,63], while some failed to record any effect at all [64,65]. This lack of consistency Fig.…”

Section: Discussionmentioning

confidence: 94%

Combined proteomic and gene expression analysis to investigate reduced performance in rainbow trout (Oncorhynchus mykiss) caused by environmentally relevant microplastic exposure

et al. 2022

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The pollution of the environment with microplastics (MPs) is affecting aquatic organisms worldwide, and yet intensive research, has thus far failed to deliver an adequate understanding of the detrimental effects of MP ingestion by fish. Investigations using established health and performance parameters are often insufficient to determine MP toxicity, especially when considering MPs in environmentally relevant concentrations. In the present study, label-free quantitative (LFQ) proteomics of liver tissue was combined with gene expression analysis in order to investigate the long-term effects of MP exposure on rainbow trout (Oncorhynchus mykiss). With the help of a specially designed diet, two groups of fish were exposed for 120 days to environmentally relevant concentrations of MPs (on average 13 particles per fish, every 2 days) and to slightly increased levels representing those expected in the near future (on average 73 MP particles per fish, every 2 days). Both groups were compared to a control. The results provide evidence that long-term exposure to MPs has a dose-dependent negative effect on the performance of rainbow trout. No differences in blood glucose level, hematocrit level or lipid peroxidation were observed between treatments. The proteomic analysis revealed 6071 unique proteins, but no significant change in hepatic protein concentrations compared to their matching controls, although certain proteins appear to have been up- or down-regulated multifold and should be considered in continuing experiments. When comparing highly regulated proteins with the levels of their respective mRNA transcripts, a good correlation was observed just for “differentially regulated trout protein 1”, encoded by drtp1. This may therefore be a suitable biomarker for future studies with trout. Several hypotheses were put forward to explain the observed differences in growth: nutrient dilution, caused by increased amounts of non-digestible material in the diet, and growth effects due to differences in diet quality could be excluded. Physical interference of MPs with the gastrointestinal tract are also unlikely, as fish are regularly exposed to particulate matter in natural environments and previous studies did not find evidence of such interferences. Instead, indirect detrimental effects of MPs, either due to their hydrophobic surface properties or the presence of certain additives, could cause allergic reactions, microbiota dysbiosis or general stress responses. Although no clear cause for the reduced growth was identified, the current study demonstrates the potential utility of omics approaches when dealing with such a complex question. Future studies should extend analyses to the gastrointestinal tract and associated tissues. It should be ensured that the MP exposure is realistic and that the duration of the experiments covers several months. Direct evidence of a significant negative influence of long-term exposure to realistic and near-future MP concentrations on fish highlight the importance of measures to prevent a further increase of MPs in the environment.

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Assessing microplastic uptake and impact on omnivorous juvenile white seabream Diplodus sargus (Linnaeus, 1758) under laboratory conditions

Cited by 21 publications

References 58 publications

Chronic feeding exposure to virgin and spiked microplastics disrupts essential biological functions in teleost fish

Chronic feeding exposure to virgin and spiked microplastics disrupts essential biological functions in teleost fish

Microplastics alter feeding strategies of a coral reef organism

Combined proteomic and gene expression analysis to investigate reduced performance in rainbow trout (Oncorhynchus mykiss) caused by environmentally relevant microplastic exposure

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