Ecotoxicology最新文献_第4页

The importance of using local species in ecotoxicological studies: nematodes of Amazonian occurrence vs. Caenorhabditis elegans in the analysis of lethal and sublethal effects of aluminium.

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-11 DOI: 10.1007/s10646-025-02867-y

Erivaldo Baia, Adauto Lima Cardoso, Leandro Machado de Carvalho, Cristine Bastos do Amarante, Lílian Lund Amado, Virág Venekey

{"title":"The importance of using local species in ecotoxicological studies: nematodes of Amazonian occurrence vs. Caenorhabditis elegans in the analysis of lethal and sublethal effects of aluminium.","authors":"Erivaldo Baia, Adauto Lima Cardoso, Leandro Machado de Carvalho, Cristine Bastos do Amarante, Lílian Lund Amado, Virág Venekey","doi":"10.1007/s10646-025-02867-y","DOIUrl":"https://doi.org/10.1007/s10646-025-02867-y","url":null,"abstract":"It is recognized that in bioassays, especially those conducted for ecotoxicological purposes, preference should be given to the use of species that are adapted to the physical-chemical conditions of the environment to be monitored. However, to establish the use of alternative species instead of the standardized ones, it is recommended to carry out tests to assess/compare their sensitivity to contaminants. This study assessed the lethal and sublethal effects (growth, fertility, and reproduction) of different aluminium concentrations, including environmentally relevant concentrations recorded in the Amazon, on two nematode species (C. tropicalis and C. briggsae) with Amazonian occurrence and C. elegans. The species' responses to aluminium exposure were different. In tests to assess lethal effect, C. elegans was the most sensitive (LC50 = 3.32 ± 1.89 mg/L), while C. tropicalis was the least sensitive (LC50 = 6.98 ± 2.20 mg/L). The LC50 for C. briggsae could not be estimated due to the lack of a concentration-dependent response. On the other hand, when sublethal effects were assessed at low aluminium concentrations (environmentally relevant concentrations), C. tropicalis was the most sensitive with an inhibition rate in both reproduction and growth; C. elegans was the least sensitive, and C. briggsae showed an intermediate response. Therefore, C. tropicalis and C. elegans adopted opposite strategies in response to aluminium exposure. This study reinforces the use of local species in ecotoxicological tests and suggests the use of C. tropicalis as a test organism in future bioassays to evaluate the effects of contaminants, particularly in the tropical/Amazon region.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143604339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physiological and oxidative status of soybean seedlings exposed to short term treatment with polystyrene nanoparticles. 短期暴露于聚苯乙烯纳米颗粒处理的大豆幼苗的生理和氧化状态。

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-11-20 DOI: 10.1007/s10646-024-02833-0

Michał Urbański, Burak Mete Yiğit, Anna Ekner-Grzyb, Jagna Chmielowska-Bąk

{"title":"Physiological and oxidative status of soybean seedlings exposed to short term treatment with polystyrene nanoparticles.","authors":"Michał Urbański, Burak Mete Yiğit, Anna Ekner-Grzyb, Jagna Chmielowska-Bąk","doi":"10.1007/s10646-024-02833-0","DOIUrl":"10.1007/s10646-024-02833-0","url":null,"abstract":"Plastic is widely used worldwide due to its durability and relatively low production costs. However, its durability also has significant drawbacks - plastic is a slowly degrading material and greatly contributes to the environmental pollution. Increasing body of evidence shows that contamination of the environment with plastic negatively affects plants and other living organisms. The aim of present research was to determine whether short-term exposure to polystyrene nanoparticles (PSNP) has toxic effect on soybean seedlings (Glycine max L). In the first stage of the research, the effect of two hour long incubation in PSNP solutions (10 and 100 mgl-1) on the germination of soybean seeds was determined. In the second part of the study, the potential cytotoxic effect of PSNP on young seedlings was measured. The results indicate that incubation in PSNP solutions inhibits the germination of soybean seeds by approx. 10% (at p = 0.05). However, this effect was only observed after 48 and 72 h of germination and by lower PSNP concentrations, 10 mgl-1. In turn, in young soybean seedlings exposure to PSNP had no effect on growth, cell viability or oxidative status by p = 0.05. The results indicate that germination is a PSNP-sensitive process. In turn, already germinated seedlings are relatively resistant to the short-term exposure to this stressor.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"241-247"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11835988/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142675456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanisms of calcium-induced protection against lead toxicity in Ulmus umbraculifera L.: a physiological and biochemical perspective. 钙诱导的榆树抗铅毒性保护机制：生理和生化视角

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-11-06 DOI: 10.1007/s10646-024-02823-2

Giti Barzin, Zoya Janebelahi Firozabadi, Roya Bishehkolaei

{"title":"Mechanisms of calcium-induced protection against lead toxicity in Ulmus umbraculifera L.: a physiological and biochemical perspective.","authors":"Giti Barzin, Zoya Janebelahi Firozabadi, Roya Bishehkolaei","doi":"10.1007/s10646-024-02823-2","DOIUrl":"10.1007/s10646-024-02823-2","url":null,"abstract":"Lead (Pb) is a toxic stressor in the soil, which affects plant morphological and physiological events differently. A pot study was initiated to characterize the effect of calcium (Ca) application (20 and 40 mM) on Ulmus umbraculifera L. under Pb treatment (200 and 400 µM). The results revealed that higher levels of Pb significantly reduced plant height (48.3%), total dry weight (44.7%), leaf area index (45%), chlorophyll a (53.7%), chlorophyll b (51.4%), carotenoids (37.8%), and Fv/Fm ratio (20.4%) compared to untreated plants. However, the Ca application improved the aforementioned physiological features. Additionally, Pb toxicity disrupted oxidative status in the plants by increasing malondialdehyde (MDA), methylglyoxal, superoxide anion, and H₂O₂, which also induced the activities of SOD, GR, APX, and CAT. In contrast, Ca decreased MDA, methylglyoxal, superoxide anion, and H₂O₂ by enhancing SOD, CAT, GR, and APX activities compared to the control. Notably, ascorbate (AsA), dehydroascorbic acid (DHA), glutathione (GSH), oxidized glutathione (GSSG) levels, and AsA-DHA and GSH-GSSG ratios changed significantly with Pb and Pb + Ca treatments. According to our findings, monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), glyoxalase (Gly) I, and Gly II activities increased with Pb treatment; however, Ca application further promoted their activities. Furthermore, Pb treatment significantly suppressed the uptake of mineral nutrients and increased Pb accumulation, whereas Ca application improved the uptake of these elements and lowered Pb content. These observations confirmed that the positive effects of Ca application on photosynthetic efficiency, nutrient absorption, and enzymatic and non-enzymatic antioxidants enhanced plant tolerance under Pb toxicity.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"193-206"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sensitivity of larval Dendropsophus haddadi (Bastos and Pombal 1996), an anuran species from the Brazilian Atlantic Forest, to acute exposure to nitrate. 巴西大西洋森林中的一种有尾目动物 Dendropsophus haddadi（Bastos 和 Pombal，1996 年）的幼虫对急性接触硝酸盐的敏感性。

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-11-20 DOI: 10.1007/s10646-024-02830-3

Andrés Egea-Serrano, Elaine Macêdo, Mirco Solé

{"title":"Sensitivity of larval Dendropsophus haddadi (Bastos and Pombal 1996), an anuran species from the Brazilian Atlantic Forest, to acute exposure to nitrate.","authors":"Andrés Egea-Serrano, Elaine Macêdo, Mirco Solé","doi":"10.1007/s10646-024-02830-3","DOIUrl":"10.1007/s10646-024-02830-3","url":null,"abstract":"Nitrogenous pollution has been reported to be a major threat to biodiversity and, therefore, it may be related to the decline of amphibians, the most threatened group of vertebrates in the world. In spite of this, and the widespread release of nitrogenous compounds into the environment, research on the impact of this pollution on Neotropical species remains limited. The aim of this study was to assess the sensitivity of one anuran species inhabiting in the Brazilian Atlantic Forest (Dendropsophus haddadi) to NaNO3 by an acute exposure laboratory experiment, addressing also whether carryover effects exist. Larval mortality increased as time went on in the case of the highly polluted treatments, which also affected swimming performance. Mean lethal concentration (LC50) values revealed that the sensitivity of the study species to NaNO3 was similar to that described for other amphibians, both tropical and temperate species. Additionally, larvae exposed to moderate levels of pollution significantly increased final mass. In spite of this, once larvae were transfered into clean water, no further mortality was recorded, and swimming performance improved. These results indicate that tropical species may not be more vulnerable to chemical pollution than temperate ones, and suggest that they are able to recover from acute short exposure to nitrogenous compounds, all of which represent a new addition to the knowledge of the vulnerability of Dendropsophus haddadi to pollution and, thus, to Neotropical ecotoxicology.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"231-240"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142675457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chronic toxicity and intergenerational effects of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD) exposure alone and in combination with Zn²⁺ on Daphnia magna (Cladocera). N-（1,3-二甲基丁基）-N'-苯基-对苯二胺（6PPD）单独暴露和与Zn2+联合暴露对大水蚤的慢性毒性和代际效应

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-11-29 DOI: 10.1007/s10646-024-02836-x

Liu Yang, Kexin Liu, Lina Shi, Ming Chen, Junyan Liu, Shiniu Dai, Yilong Xi, Xinli Wen

{"title":"Chronic toxicity and intergenerational effects of N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD) exposure alone and in combination with Zn2+ on Daphnia magna (Cladocera).","authors":"Liu Yang, Kexin Liu, Lina Shi, Ming Chen, Junyan Liu, Shiniu Dai, Yilong Xi, Xinli Wen","doi":"10.1007/s10646-024-02836-x","DOIUrl":"10.1007/s10646-024-02836-x","url":null,"abstract":"N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPD) and Zn2+, extensively used in the tire manufacturing process, are frequently detected in freshwater environments. However, the intergenerational effects of isolated 6PPD exposure and joint 6PPD and Zn2+ exposure at concentrations approximating environmental levels remain unknown. This study assessed the chronic toxicity and intergenerational effects of 6PPD (0.02-20 μg/L) and a mixture of 6PPD and Zn2+ (5 μg/L) over three generations in Daphnia magna bioassays. In the F0 generation, a dose-dependent decline in total offspring number was observed with 6PPD exposure alone, while co-exposure with Zn2+ exacerbated the reproductive toxicity of 6PPD. Across three generations, low-dose (0.02 µg/L) 6PPD alone and combined with Zn2+ induced a cumulative degenerative maternal effect. Conversely, high-dose (20 µg/L) 6PPD, both independently and in combination with Zn2+, exhibited an adaptive maternal effect. Notably, the grandmaternal effect emerged exclusively in the co-exposure group treated with 20 μg/L 6PPD and 5 μg/L Zn2+, with no such effect in the group exposed to 20 μg/L 6PPD alone, suggesting that Zn2+ may enhance the potential toxicity of 6PPD. Overall, this study provides novel insight into the intergenerational impacts of environmentally relevant levels of 6PPD alone and in combination with a heavy metal, elucidating the environmental risks posed by tire-derived chemicals through their synergistic effects on transgenerational toxicity.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"280-291"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142750480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of atrazine, diuron and glyphosate mixtures on zebrafish embryos: acute toxicity and oxidative stress responses. 阿特拉津、迪乌伦和草甘膦混合物对斑马鱼胚胎的影响：急性毒性和氧化应激反应。

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-11-29 DOI: 10.1007/s10646-024-02839-8

Maria Eduarda Maia, Rafael Xavier Martins, Matheus Carvalho, Luís M Félix, Luis Fernando Marques-Santos, Davi Farias

{"title":"Effects of atrazine, diuron and glyphosate mixtures on zebrafish embryos: acute toxicity and oxidative stress responses.","authors":"Maria Eduarda Maia, Rafael Xavier Martins, Matheus Carvalho, Luís M Félix, Luis Fernando Marques-Santos, Davi Farias","doi":"10.1007/s10646-024-02839-8","DOIUrl":"10.1007/s10646-024-02839-8","url":null,"abstract":"Synthetic pesticides are known for their toxic effects on non-target aquatic organisms. However, little is known about their effects when present in mixtures, which are closer to realistic exposure scenarios. Therefore, this study evaluates the toxicity of pesticides such as diuron, atrazine and glyphosate, individually and in combination, in zebrafish embryos, investigating their mechanisms of oxidative stress. The results revealed acute toxicity for diuron and atrazine, with LC50 values of 9.6 mg/L and 53.57 mg/L for 96-h-old zebrafish, respectively. On the other hand, no effect was observed for glyphosate alone at the maximum concentration tested (100 mg/L). The mixture of diuron and atrazine showed a synergistic effect, resulting in a decrease in the LC50 of each pesticide. Mixtures of diuron + glyphosate and atrazine + glyphosate were considered additive and antagonistic, respectively. All biomarkers analyzed (AChE, LDH, GST, CAT and GPx) showed significant changes. Furthermore, an increase in ROS production was observed in larvae exposed to individual and in the mixture composed of atrazine and diuron. These findings indicate that atrazine and diuron exhibit increased toxicity when combined, with their mechanisms of action-both in isolation and in mixtures-being at least partially linked to oxidative stress.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"304-316"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142750481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ecotoxicological effects of a glyphosate-based herbicide on Gryllus (Gryllus) assimilis (Orthoptera: Gryllidae) ontogeny: a study on antioxidant system, oxidative stress and cholinergic system. 草甘膦除草剂对蝼蛄（直翅目：蝼蛄科）本体发育的生态毒理学影响：关于抗氧化系统、氧化应激和胆碱能系统的研究。

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-11-15 DOI: 10.1007/s10646-024-02831-2

Leanna Camila Macarini, Ana Tereza Bittencourt Guimarães, Neucir Szinwelski

{"title":"Ecotoxicological effects of a glyphosate-based herbicide on Gryllus (Gryllus) assimilis (Orthoptera: Gryllidae) ontogeny: a study on antioxidant system, oxidative stress and cholinergic system.","authors":"Leanna Camila Macarini, Ana Tereza Bittencourt Guimarães, Neucir Szinwelski","doi":"10.1007/s10646-024-02831-2","DOIUrl":"10.1007/s10646-024-02831-2","url":null,"abstract":"Brazil is an important global agricultural producer and to increase production the country has extensively used glyphosate-based herbicides (GBH), surpassing consumption and sales records. Consequently, concerns have arisen regarding the potential impact of GBH on ecosystems and non-target organisms. Thus, the effects of GBH exposure were evaluated throughout the cricket Gryllus (Gryllus) assimilis ontogeny, with five developmental stages. Each period contained 3 control and 3 treated boxes, with 15 crickets each, resulting in 90 insects at a time. The control groups received water, while the treated ones were continuously exposed to GBH (0.864 mg.GBH.L-1), with the solutions changed every 48 h. After each exposure time the crickets' group were euthanized to assess the activity of antioxidant enzymes (GST, GR, GPx, and CAT), cholinergic enzymes (ChE), and lipid peroxidation (LPO). The results revealed changes in the systems throughout different developmental phases. Specifically, CAT activity exhibited a significant increase during the nymphal phase, associated with the dismutation of hydrogen peroxide. The GBH increased GST, indicating its role in cellular detoxification, particularly during adulthood. In the senescence stage there was a considerable rise in ChE enzymes, suggesting their involvement in both, choline esters breakdown and potential pesticide detoxification. The action of these enzymes to effectively control lipid peroxidation shows the adaptability of this species to environmental contamination. These findings underscore the long-term effects of agrochemical pollution and emphasize the importance of sustainable practices, effective regulations, and alternative weed control methods.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"219-230"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142638440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effects of diatom polyunsaturated aldehydes on embryonic and larval zebrafish (Danio rerio). 硅藻多不饱和醛对斑马鱼胚胎和幼鱼的影响。

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-11-29 DOI: 10.1007/s10646-024-02838-9

Rachel Raymer, Soraya M Jessa, W James Cooper, M Brady Olson

{"title":"The effects of diatom polyunsaturated aldehydes on embryonic and larval zebrafish (Danio rerio).","authors":"Rachel Raymer, Soraya M Jessa, W James Cooper, M Brady Olson","doi":"10.1007/s10646-024-02838-9","DOIUrl":"10.1007/s10646-024-02838-9","url":null,"abstract":"Marine diatoms are pervasive in many planktonic and benthic environments and represent an important food source for a wide range of species. Some diatoms produce polyunsaturated aldehydes (PUAs) as defensive toxins. PUA exposure is known to reduce the fecundity of invertebrate grazers like copepods and echinoderm larvae, but little is known about the effects of PUAs on vertebrates. Many fish species are likely to come into close contact with diatoms. Many may deposit eggs on diatom-coated substrates, consume diatoms as larvae, and/or feed heavily on zooplankters that may be gut-loaded with diatoms. The purpose of this study was to test whether dissolved diatom PUAs affect the early life stages of a model fish, Danio rerio (zebrafish). To test this, zebrafish embryos and larvae were exposed to proportionally increasing mixtures of the dissolved diatom PUAs 2E,4E-decadienal, 2E,4E-octadienal and 2E,4E-heptadienal. Under PUA exposure, three metrics of fitness were assessed: embryo heart rate, larval size at hatch, and pre-feeding mortality rate. Zebrafish embryos exposed at 24 h post fertilization (hpf) experienced decreased average heart rate after 2 days of PUA exposure. Embryos 24 hpf exposed to PUA mixtures for 6 days showed a reduction in size in comparison to embryos from controls. Embryos exposed to PUAs from 2 hpf until death showed lower survivorship compared to larvae in controls. The results of this study suggest that larval fish that are sympatric with PUA producing diatoms during their embryonic and larval stages may be susceptible to detrimental effects from PUA exposure.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"292-303"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142754757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Activity pattern of antioxidant enzymes in relation to the time of exposure of hexavalent chromium to Nile tilapia Oreochromis niloticus. 抗氧化酶的活性模式与尼罗罗非鱼接触六价铬的时间有关。

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-11-28 DOI: 10.1007/s10646-024-02832-1

Debkanta Ghosh, Samir Kumar Saha, Anilava Kaviraj, Subrata Saha

{"title":"Activity pattern of antioxidant enzymes in relation to the time of exposure of hexavalent chromium to Nile tilapia Oreochromis niloticus.","authors":"Debkanta Ghosh, Samir Kumar Saha, Anilava Kaviraj, Subrata Saha","doi":"10.1007/s10646-024-02832-1","DOIUrl":"10.1007/s10646-024-02832-1","url":null,"abstract":"Hexavalent chromium (Cr (VI)), a toxicant of environmental concern, frequently enters into water bodies and produces oxidative stress in fish. The antioxidant enzymes, Superoxide dismutase (SOD), Catalase (CAT), and Glutathion S-transferase (GST) are activated to counteract the oxidative stress in fish. This study explores the pattern of activation of these enzymes in gill, muscle, liver, and kidney tissues of Nile tilapia Oreochromis niloticus exposed to 9.35 mg/L and 18.70 mg/L of Cr (VI) for 96 h. The optimal hour of activity of these enzymes was revealed through extensive regression analysis. The results indicate a bell-shaped time response curve in the activity of the enzymes in both the treatments, except CAT in the gill of fish exposed to 18.70 mg/L Cr (VI) and GST in the gill, liver, and kidney of fish exposed to 18.70 mg/L Cr (VI). The results indicate that the optimal hour of activity of SOD changes in tandem with CAT, SOD responding first followed by CAT, both diminishing within 96 h. However, deviating from the bell-shaped pattern, the activity of CAT in gill and GST in gill, liver, and kidney in fish exposed to 18.70 mg/L Cr (VI) continued to rise even at 96 h, indicating that these antioxidant enzymes could not diminish the oxidative stress produced by the higher dose of Cr (VI). It was concluded that the activity of SOD, CAT, and GST between 30 and 70 h in the gill, liver, and kidney of Nile tilapia could serve as excellent biomarkers of oxidative stress under low doses of Cr (VI).","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"266-279"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142738708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microplastics in marine fish: a mini-review on presence, classification, and impacts. 海洋鱼类中的微塑料：关于存在、分类和影响的综述。

IF 2.4 4区环境科学与生态学

Ecotoxicology Pub Date : 2025-03-01 Epub Date: 2024-11-30 DOI: 10.1007/s10646-024-02837-w

María Timaná Morales, Viridiana Peraza Gómez, Eva R Kozak, José Vladimir Trejo Flores, Maricruz Robles Ravelero, Luis Daniel Espinosa Chaurand, Edgar Iván Jiménez Ruíz

{"title":"Microplastics in marine fish: a mini-review on presence, classification, and impacts.","authors":"María Timaná Morales, Viridiana Peraza Gómez, Eva R Kozak, José Vladimir Trejo Flores, Maricruz Robles Ravelero, Luis Daniel Espinosa Chaurand, Edgar Iván Jiménez Ruíz","doi":"10.1007/s10646-024-02837-w","DOIUrl":"10.1007/s10646-024-02837-w","url":null,"abstract":"Plastic production has experienced exponential growth in recent years due to its diverse industrial applications, low cost, and high availability, also causing issues, since plastic waste in aquatic ecosystems transforms into microplastics (MPs) through mechanical and weathering processes. Microplastics are distributed ubiquitously in water bodies, where they can be ingested by a wide aquatic organism range, including fish, which have been used as bioindicators to assess microplastic presence and toxicity. Research has revealed microplastic presence in various fish species worldwide; the most common characteristics are fibers and fragments of blue, black, and transparent colors, and polyethylene, terephthalate, polypropylene and cellophane chemical composition. Experimental studies under laboratory conditions have demonstrated microplastics impact on fish, showing physical, immunological, and hematological damage, and oxidative stress ultimately leading to organisms' death. However, laboratory results do not necessarily predict impacts on wild fish due to different conditions to which the organisms are exposed. Therefore, further research needs to simulate real scenarios faced by wild fish in the marine environment, providing greater certainty about microplastic impacts and negative effects.","PeriodicalId":11497,"journal":{"name":"Ecotoxicology","volume":" ","pages":"169-180"},"PeriodicalIF":2.4,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142767470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0