Microplastic toxicity: A review of the role of marine sentinel species in assessing the environmental and public health impacts

Case Studies in Chemical and Environmental Engineering, Journal Year: 2020, Volume and Issue: 3, P. 100073 - 100073

Published: Dec. 19, 2020

The ubiquity of plastics is a concern for the health humans and marine ecosystems. Plastics their composite endocrine disrupting chemicals (EDCs) are associated with adverse outcomes in species. With continued plastic production, waste mismanagement global population increases, exposure effects will continue to escalate. 'One Health' paradigm describes 'health' as cross-species universal 'good'. Adverse from shared cross-species, indicating common mechanisms toxicity. Marine species individuals ingesting naturally disparate levels present valuable opportunities researchers understanding real-world impacts plastic. Sampling sentinels monitors dynamic exposures evolving landscape, allowing transcriptomic epigenetic adaptations these be assessed. Advances bioinformatics enable elucidation biological pathways toxicity systems level context. This review examines microplastics environment, outcomes, exploitation sentinel this context elucidate plastics. Hierarchical priorities when selecting explored. Abundant seabirds such herring gull or northern fulmar represent ideal sentinels.

Language: Английский

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Modeling the exposure of wild fish to endocrine active chemicals: Potential linkages of total estrogenicity to field-observed intersex

Water Research, Journal Year: 2018, Volume and Issue: 139, P. 187 - 197

Published: April 3, 2018

Language: Английский

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Characterization of darter (Etheostoma spp.) interspecific energetic responses to acute temperature elevations

Conservation Physiology, Journal Year: 2025, Volume and Issue: 13(1)

Published: Jan. 1, 2025

Abstract Understanding metabolic responses to temperature elevations is critical for determining how fish populations will be impacted by the increased occurrence of extreme heat events. Here, we characterized thermal tolerance limits and functions three closely related darter species native Grand River Southern Ontario: Fantail (Etheostoma flabellare; FTD), Rainbow caeruleum; RBD) Johnny nigrum; JD). Brain heart activity enzymes associated with cellular respiration were analysed each at 15°C baseline following a Critical Thermal Maximum (CTmax) test. Additionally, aerobic scope (AS) was determined while exposed four ramps designed mimic previously recorded heatwaves. CTmax significantly differed between FTD displaying highest 33.3°C, JD second 31.8°C RBD lowest 30.7°C. In darters not stress, possessed higher brain enzymatic rates, specifically in pyruvate kinase (PK), citrate synthase (CS) malate dehydrogenase (MDH). These patterns shifted slightly after exposure CTmax, substantial elevation PK, lactate dehydrogenase, CS MDH activity, suggesting they had greater capacity extremes. Within tissue, observed no interspecific differences temperatures; however, lower enzyme than or all but cytochrome c oxidase CTmax. Metabolically, exhibited AS 10 elevations. Our findings demonstrate that may best equipped respond temperature-induced increases demand due their elevated broader AS. insights contribute future conservation efforts informing predictions on population shifts, particularly context climate change.

Language: Английский

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Impacts of wastewater treatment plant effluent on energetics and stress response of rainbow darter (Etheostoma caeruleum) in the Grand River watershed

Comparative Biochemistry and Physiology Part B Biochemistry and Molecular Biology, Journal Year: 2017, Volume and Issue: 224, P. 270 - 279

Published: Nov. 23, 2017

Language: Английский

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Individual movement behaviour and habitat use of a small-sized cypriniform (Telestes muticellus) in a mountain stream

Environmental Biology of Fishes, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

Abstract Knowledge about the biology and ecology of species is fundamental for their management conservation. Despite this, many fish life stages are understudied, there a great need research efforts to understand ecology. Italian riffle dace ( Telestes muticellus ; order Cypriniformes) small-sized (< 15 cm) stream native peninsula. There scarcity on its behaviour. In this study, we explored movement in Mediterranean mountain Northern Italy using passive integrated transponder (PIT) telemetry. Over months, 267 were located 2–27 times. Most remained stationary, while few roamed over several hundreds meters. Fish covered larger linear range during spring autumn than other seasons. T. showed strong preference pools, was strongest summer. We observed no differences habitat use movements between day night, size had major effect. Within displayed remarkably small home ranges (median 8 m 2 ). increased period flood events, indicating that high-flow events may be important downstream upstream dispersal streams.

Language: Английский

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The role of intestinal bacteria in ammonia detoxification ability of teleost fish

Journal of Experimental Biology, Journal Year: 2019, Volume and Issue: unknown

Published: Jan. 1, 2019

Protein catabolism during digestion generates appreciable levels of ammonia in the gastrointestinal tract (GIT) lumen. Amelioration by enterocyte, via enzymes such as glutamine synthetase (GS), glutamate dehydrogenase (GDH), and alanine aspartate aminotransferases (ALT; AST), is found teleost fish. Conservation these across bacterial phyla suggests that GIT microbiome could also contribute to detoxification providing supplemental activity. Hence, microbiome, enzyme activities, were investigated two fish occupying dissimilar niches; carnivorous rainbow darter algivorous central stoneroller. There was a strong effect species on activity GS, GDH, AST, ALT, well lumen concentration, composition microbiome. Further, removal intestinal bacteria impacted activities GS ALT herbivorous but not carnivore. The repeatability robustness this relationship tested field locations years. Within an individual waterbody, there no impact sampling location any factors. However, different waterbodies affected luminal concentrations both fish, while only stoneroller populations varied. Overall, between bacteria, activity, observed displayed correlation alone independent This suggest are less dependent non-host mechanisms for regulation GIT.

Language: Английский

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Time Series Resolution of the Fish Necrobiome Reveals a Decomposer Succession Involving Toxigenic Bacterial Pathogens

mSystems, Journal Year: 2020, Volume and Issue: 5(2)

Published: April 27, 2020

Despite progress understanding microbial communities involved in terrestrial vertebrate decomposition, little is known about the decomposition of aquatic vertebrates from a functional and environmental context. Here, we analyzed temporal changes "necrobiome" rainbow darters, which are common North American fish that sensitive indicators water quality. By combining 16S rRNA gene shotgun metagenomic sequence data four time points, studied progression decomposers both taxonomic perspectives. The profiles revealed strong community succession, with early stages associated Aeromonas Clostridium taxa later dominated by members Rikenellaceae (i.e., Alistipes/Acetobacteroides genera). These results were reproducible independent perturbation, given exposure to wastewater treatment plant effluent did not substantially influence necrobiome composition or sample microbiota. Metagenomic analysis significant throughout degradation pathways for amino acids, carbohydrates/glycans, other compounds, addition putrefaction production putrescine, cadaverine, indole. Binning contigs confirmed predominance genome assemblies, including those novel strains related pathogen veronii bins genes also encoded hemolysin toxins (e.g., aerolysin) particularly abundant process, potentially contributing host cell lysis during decomposition. Overall, our demonstrate wild-caught have decomposer succession serves as potential source putative pathogens toxigenic bacteria.IMPORTANCE animal tissues an important ecological process impacts nutrient cycling natural environments. We (rainbow darters) over obtain Our was reproduced across different Decomposition point main driver potential; origin (upstream downstream plant) had secondary effect. identified dominant community. bacteria peaked coincided abundance hemolytic toxin genes. work reveals fish, providing insights into necrobiome.

Language: Английский

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Microparticles in Wild and Caged Biota, Sediments, and Water Relative to Large Municipal Wastewater Treatment Plant Discharges

Environmental Toxicology and Chemistry, Journal Year: 2024, Volume and Issue: 43(5), P. 1047 - 1061

Published: March 7, 2024

Abstract Anthropogenically modified microparticles including microplastics are present in municipal wastewater treatment plant (WWTP) effluents; however, it is unclear whether biotic exposures elevated downstream of these outfalls. In the fall 2019, study examined microparticle levels resident fish, environmental samples, and caged organisms were near Waterloo Kitchener WWTP outfalls along Grand River, Ontario, Canada. Wild rainbow darters (Etheostoma caeruleum) collected from a total 10 sites upstream both WWTPs, with surface water sediment samples to assess spatial patterns over an approximately 70-km river stretch. Amphipods (Hyalella azteca), fluted-shell mussels (Lasmigona costata), trout (Oncorhynchus mykiss) also one for 14 or 28 days. Whole amphipods, fish digestive tracts, mussel tissues (hemolymph, glands, gills) digested potassium hydroxide, whereas processed using filtration density separation. Visual identification, measurement, chemical confirmation (subset only) completed. Elevated abiotic found at several reference as well wastewater-impacted sites. Microparticles all tissues, wild did not show indicative increased effluent discharges. contrast, counts directly outfall. Across cellulose fibers (mainly blue clear colors) most common. Overall, results suggest little influence effluents on biota but rather ubiquitous presence across that indicates importance other point nonpoint sources this system. Environ Toxicol Chem 2024;43:1047–1061. © 2024 His Majesty King Right Canada The Authors. Environmental Toxicology Chemistry published by Wiley Periodicals LLC behalf SETAC. Reproduced permission Minister Environment Climate Change

Language: Английский

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Oxygen consumption rate during recovery from loss of equilibrium induced by warming, hypoxia, or exhaustive exercise in rainbow darter (Etheostoma caeruleum)

Journal of Fish Biology, Journal Year: 2024, Volume and Issue: 105(1), P. 23 - 33

Published: April 10, 2024

Abstract Animals routinely encounter environmental (e.g., high temperatures and hypoxia) as well physiological perturbations exercise digestion) that may threaten homeostasis. However, comparing the relative threat or “disruptiveness” imposed by different stressors is difficult, vary in their mechanisms, effects, timescales. We exploited fact several acute can induce loss of equilibrium (LOE) fish to (i) compare metabolic recovery profiles three environmentally relevant (ii) test concept LOE could be used a calibration for intensity stressors. focused on Etheostoma caeruleum , species copes with fluctuations temperature oxygen relies burst swimming relocate avoid predators, our model. Using stop‐flow (intermittent) respirometry, we tracked consumption rate (MO 2 ) E. recovered from induced hypoxia (PO at LOE), warming (critical thermal maximum, CT max ), exhaustive exercise. Regardless stressor used, rapidly, returning routine MO within ~3 h. Fish recovering had similar maximum aerobic scopes, time, total excess post‐hypoxia post‐warming consumption. Though greater corresponding higher scope than hypoxia, its profile was otherwise other stressors, suggesting “calibration” state such viable conceptual approach investigators interested questions related multiple cross tolerance, how animals cope challenges

Language: Английский

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Hydrological connectivity drives longitudinal movement of endangered endemic Chilean darter Percilia irwini (Eigenmann, 1927)

Journal of Fish Biology, Journal Year: 2020, Volume and Issue: 98(1), P. 33 - 43

Published: Sept. 23, 2020

Abstract Movement is a fundamental aspect of fish ecology, and it therefore represents an important trait to monitor for the management conservation populations. This especially true small benthic fish, as they often inhabit part catchment where their movement may be restricted by alterations river connectivity due human activity. Still, these remains poorly understood, partly because size cryptic nature. applies Percilia irwini , endangered darter native south‐central region Chile. Its habitat has been affected presence large hydroelectric dams currently threatened construction several others. In this study, authors investigated patterns P. from populations inhabiting different parts Biobío catchment, with levels natural and/or human‐induced features. The combined chronological clustering random forest classification reconstruct lifelong movements multi‐elemental otolith microchemistry transects. majority detected occurred in undisturbed catchment. These were directional upstream occurring between capture sites lower middle reaches river, representing distance nearly 30 km, much larger than previously thought. Nonetheless, was activity, no such identified. study shows that alteration could impede naturally further threaten resilience . Furthermore, results presented are used discuss advantages disadvantages analysis studying fish.

Language: Английский

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