Study of the ageing and the sorption of polyaromatic hydrocarbons as influencing factors on the effects of microplastics on blue mussel

Aquatic Toxicology, Journal Year: 2023, Volume and Issue: 262, P. 106669 - 106669

Published: Aug. 25, 2023

Language: Английский

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Influence of CO2-induced acidification and temperature increased on the toxicity of metals in sediment in the mussel Mytella charruana

Frontiers in Ocean Sustainability, Journal Year: 2025, Volume and Issue: 3

Published: April 4, 2025

Environmental and climate changes have placed increasing pressure on the resilience of marine ecosystems. In addition to these transformations, coastal environments are also affected by anthropogenic stressors, such as metal contamination. Bivalves play a crucial ecological role in estuarine This study aimed evaluate effects CO 2 -induced acidification, warming, mixed metals contamination mangrove mussel Mytella charruana . We evaluated DNA damage (strand breaks), lipid peroxidation (LPO) levels, reduced glutathione (GSH) content, well enzymatic activities S-transferase (GST) peroxidase (GPx) gills digestive glands. Additionally, neurotoxicity was assessed muscle tissues through acetylcholinesterase (AChE) activity. Laboratory experiments were conducted using sediments spiked with (Cu, Pb, Zn, Hg), alongside control group (non-spiked sediments), combining three pH levels (7.5, 7.1, 6.7) two temperatures (25 27°C). Five mussels per treatment (four replicates) exposed for 96 h. Two pools organisms each separated replicate ( n = 8) their gills, glands, muscles dissected biochemical biomarkers analyses. Temperature increase primary factors modulating antioxidant responses AChE activity muscle. However, when combined stressors integrity LPO. Acidification alone showed no effect any biomarker analyzed. Higher IBR values indicated exposure, even at concentrations below individual safety levels. Here, we provide insights from short-term experiment complex interactions between predicted scenarios, which change influenced associated mixture sediments. These findings contribute understanding organismal scenarios change, particularly environments.

Language: Английский

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Tralomethrin exposure disrupts neurodevelopment and locomotor function in zebrafish

Toxicological & Environmental Chemistry Reviews, Journal Year: 2025, Volume and Issue: 107(6), P. 757 - 777

Published: May 16, 2025

Language: Английский

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Combined threats of climate change and contaminant exposure through the lens of bioenergetics

Global Change Biology, Journal Year: 2023, Volume and Issue: 29(18), P. 5139 - 5168

Published: June 28, 2023

Organisms face energetic challenges of climate change in combination with suites natural and anthropogenic stressors. In particular, chemical contaminant exposure has neurotoxic, endocrine-disrupting, behavioral effects which may additively or interactively combine associated change. We used a literature review across animal taxa classes, but focused on Arctic endotherms contaminants important ecosystems, to demonstrate potential for interactive five bioenergetic domains: (1) energy supply, (2) demand, (3) storage, (4) allocation tradeoffs, (5) management strategies; involving four change-sensitive environmental stressors: changes resource availability, temperature, predation risk, parasitism. Identified examples included relatively equal numbers synergistic antagonistic interactions. Synergies are often suggested be particularly problematic, since they magnify biological effects. However, we emphasize that traits can equally reflect dampening beneficial responses result negative fitness. Our also highlights empirical demonstrations remain limited, especially endotherms. Elucidating the nature change-by-contaminant will build toward determining overall outcomes balance Progressing determine critical species, life stages, target areas transformative arise aid forecasting broad-scale under global scenarios.

Language: Английский

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Ocean acidification impact on the uptake of trace elements by mussels and their biochemical effects

Aquatic Toxicology, Journal Year: 2024, Volume and Issue: 269, P. 106882 - 106882

Published: Feb. 29, 2024

This study delves into the intricate interplay between ocean acidification (OA), metal bioaccumulation, and cellular responses using mussels (Mytilus galloprovincialis) as bioindicators. For this purpose, environmentally realistic concentrations of isotopically labelled metals (Cd, Cu, Ag, Ce) were added to investigate whether OA increase would modify bioaccumulation induce adverse effects at level. The reveals that while certain elements like Cd Ag might remain unaffected by OA, bioavailability Cu Ce could potentially escalate, leading amplified accumulation in marine organisms. present findings highlight a significant rise within different mussel organs under elevated pCO2 conditions, accompanied an increased isotopic fractionation (140/142Ce), suggesting heightened potential for OA. results suggested influenced gills mussels. Conversely, digestive gland was exposure both trace affects biochemical M. galloprovincialis, metabolic capacity, changes energy reserves, alterations oxidative stress markers, but specific on other biomarkers (e.g., lipid peroxidation, some enzymatic or acetylcholinesterase activity) not uniform, complex interactions stressors pathways

Language: Английский

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Assessing combined effects of long-term exposure to copper and marine heatwaves on the reef-forming serpulid Ficopomatus enigmaticus through a biomarker approach

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 201, P. 116269 - 116269

Published: March 25, 2024

Sessile benthic organisms can be affected by global changes and local pressures, such as metal pollution, that lead to damages at different levels of biological organization. Effects exposure marine heatwaves (MHWs) alone in combination with environmentally relevant concentration copper (Cu) were evaluated the reef-forming tubeworm Ficopomatus enigmaticus using a multi-biomarker approach. Biomarkers cell membrane damage, enzymatic antioxidant defences, metabolic activity, neurotoxicity, DNA integrity analyzed. The Cu did not produce any significant effect. Exposure MHWs produced effects only on activity (increase glutathione S-transferase) energy reserves (decrease protein content). was condition most influenced status homeostasis exposed F. enigmaticus. plus induced increase carbonylation S-transferase decrease protein/carbohydrate content carboxylesterase activity. This study organism highlighted additive effect climate change-related stressor metals pollution brackish waters.

Language: Английский

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Geographic origin shapes the adaptive divergences of Rotaria rotatoria (Rotifera, Bdelloidea) to thermal stress: Insights from ecology and transcriptomics

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(4)

Published: April 1, 2024

Abstract Global warming has raised concerns regarding the potential impact on aquatic biosafety and health. To illuminate adaptive mechanisms of bdelloid rotifers in response to global warming, ecological transcriptomic characteristics two strains (HX ZJ) Rotaria rotatoria were investigated at 25°C 35°C. Our results showed an obvious genetic divergence between geographic populations. Thermal stress significantly reduced average lifespan R. both strains, but increased offspring production ZJ strain. Furthermore, expression levels genes Hsp70 upregulated HX strain, while GSTo1 Cu/Zn‐SOD contrary. In , CAT2 under thermal stress. Conversely, a significant decrease level Mn‐SOD gene was observed strain Transcriptomic profiling analysis revealed total 105 5288 differentially expressed (DEGs) stress, respectively. The PCA clear differences pattern Interestingly, compared numerous downregulated DEGs enriched into pathways related metabolism suggesting that from prioritize resource allocation reproduction by suppressing costly metabolic processes. This finding is consistent with life table results. study provides new insights evolution animals context climate change.

Language: Английский

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Copper Exposure Affects Anti-Predatory Behaviour and Acetylcholinesterase Levels in Culex pipiens (Diptera, Culicidae)

Insects, Journal Year: 2022, Volume and Issue: 13(12), P. 1151 - 1151

Published: Dec. 14, 2022

Copper is an essential metal that occurs chronically in the environment and affects development physiology of aquatic insects. In excess amounts, it can impair their nervous system behaviour. We tested anti-predatory behaviour Cx. pipiens larvae after seven days exposure with several concentrations copper up to 500 mg L−1. measured responses non- consumptive (predation cues) predation (dragonfly larvae) across two generations. also accumulated effect on AChE enzyme activity. exposed half treated control cues (water predator odour crushed conspecifics) other water without cues. evaluated total distance moved velocity. reduced velocity, stronger effects second generation. had no significant eaten by dragonflies. inhibited both generations at µg affect directly inhibiting activity, possibly impairing olfaction sensors larvae, resulting larval inability detect

Language: Английский

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Locomotion behavior of juveniles of the freshwater pearl mussel Margaritifera margaritifera: A new non-invasive tool for the evaluation of stress effects

Chemosphere, Journal Year: 2023, Volume and Issue: 327, P. 138521 - 138521

Published: March 27, 2023

Language: Английский

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