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ecotoxicology and environmental safety

Toxicological data on the effects of the explosive, 2,4,6-trinitrotoluene (TNT), and its degradation products suggests an unpredictable toxicological response in aquatic organisms. Thus, further research data are needed to understand the mechanisms responsible for the effects caused by these kinds of chemicals and to assess their risks accurately. Articles & Issues. Modulation of CYP1A1, UDPGT and GST genes was investigated by real-time PCR. Associate Editor, Ecotoxicology and Environmental Safety University of Porto, Portugal Dr. Ruth Pereira is an Assistant Professor with Habilitation at the Faculty of Sciences of the University of Porto. Latest issue; All issues; Article collections; Mendeley datasets; Sign in to set up alerts; RSS; About; Publish ; Submit your article Guide for authors. Articles & Issues. Litter arthropods were collected in the mining area using a total of 70 pitfall traps, in the spring and autumn of 2004. Exposure to 2,4-D induced nephrotoxicity as evidenced by an increase in thiobarbituric acid reactive substances and protein carbonyl levels and a decrease in antioxidant enzyme activities such as catalase, superoxide dismutase, glutathione peroxidase in the kidneys of suckling pups and their mothers. The results showed that by exposure of cladocerans during 7 days to contaminated food with 68 fg Cu cell(-1), a significant reduction in neonate production, survival and body size were obtained. There are a total of 3 reviewers. Quite surprisingly the minimum EC(50) values found for glyphosate did not reach micromolar concentrations, whereas most of the EC(50) values revealed to IPA did not exceed this range. New Content. Ecotoxicol Environ Saf: 5 new items Phytoextraction of Toxic Trace Elements by Sorghum Bicolor Inoculated With Streptomyces Pactum (Act12) in Contaminated Soils A Ali et al. The data from sediment toxicity tests are often interpreted in the context of 20% reductions and/or statistically significant reductions relative to negative controls. Nevertheless, despite the overall lack of responsiveness of the epigeic arthropod community data, a few taxa were negatively correlated with metal concentrations (Clubionidae and Staphylinidae), while Pseudoscorpionida were associated with the toxicological profile of the sites. Open access. OMR test was used to detect the visual behavior. Dead cells were abundant in the sections of lizard livers from the tar mat sites and occurred in notably greater numbers than the sections of livers of animals from the control sites. A level IV fugacity model is described and illustrated by application to the fate of alpha-, beta-, gamma-, and delta-hexachlorocyclohexane (HCH) in the Lanzhou area over a 60-year period from their introduction into the agricultural field until 2019. Estimated EC50s were converted into weight/volume, and 48-h EC50s ranged between <1 and >182 g/L. Metal bioavailability in aquatic organisms is known to be influenced by various water chemistry parameters. It was not possible to detect any difference between fibre type and toxicity (ANOVA), but a significantly higher toxicity was found for printed versus unprinted cotton and cotton/linen textiles, while the opposite was found for synthetic textiles. Additional examined endpoints included time course of toxicity at LC50s, pharyngeal pumping, reproduction, life span, and Hsp90 expression. In addition, it appears that NaHCO3 or humic acid mitigated reproductive toxicity in fish exposed to 45 percent PWE by their direct beneficial effects on the physiological status of fish. Publishers own the rights to the articles in their journals. Therefore, it is important that their potential effects on aquatic organisms be evaluated together. However, E2 estrogenicity for a DOM size fraction less than 5 kDa was as high as that for the positive control due to the absence of fulvic acid- and protein-like DOM to bind with E2. Analysis of these visual behavioral paradigms may be useful in predicting the adverse effects of toxicants on visual function in fish. Published by Elsevier Inc. All rights reserved. In all the field investigations, only one significant difference was found on copepods in the tillering stage of 2009, but the difference was not related to the presence of the Cry toxin. No modulation of the CYP1A1 gene or protein was observed in TNT-exposed eels. The goal of this study was to develop an in situ bioassay with Eisenia andrei, deploying it in several locations of an abandoned mining area. Ecotoxicology and Environmental Safety. Due to these findings the EC(50) values were calculated based either on molar or on weight concentrations. Articles & Issues. Mortality thresholds were about ten times higher for moxidectin than for ivermectin, hence moxidectin is indeed less toxic than ivermectin in absolute terms. Federal government websites always use a .gov or .mil domain. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. The results obtained showed a significant (p<0.05) increase in plasma glucose, total lipids, urea and creatinin levels, but the total protein, albumin concentration and globulin levels were decreased (p<0.05) significantly and consequently A/G ratio also decreased. The study was aim to investigate the effects of continuous PCBs exposure on optomotor response (OMR) and retinal photoreceptor cell development-related gene expression in zebrafish larvae. A standardized bioassay previously developed with ivermectin for the yellow dung fly (Scathophagidae) and the face fly (Muscidae) was applied to test the response of 11 dung fly species to the presumably less toxic parasiticide moxidectin. However, the underlying mechanism is unclear. RSS. Search in this journal. Furthermore, we compared the trace metal content of the urban non-vegetable fruits with supermarket products to assess health risks by consuming these urban fruits. Based on its greater affinity for metal-gill binding sites, Cd-gill binding was expected to exceed Pb-gill binding during metal mixture exposure, but this only occurred at the lowest metal concentrations (0.75 μmol L(-1)); at higher concentrations Pb-gill binding was greater than Cd-gill binding. Our results could be extended to the use of Erythrocyte Osmotic Fragility (EOF) test as a biochemical marker of membrane toxicity in marine pollution biomonitoring. Announcement: From January 2021 Ecotoxicology and Environmental Safety will become an open access journal. Ecotoxicology and Environmental Safety 101 (2014) 233–239. Twenty lizards (10 of each sex) from each polluted and each control sites were collected. Acute and reproductive toxicity tests were performed to assess the effects of two polybrominated flame retardants, polybrominated biphenyl (PBB)-153, polybrominated diphenyl ether (PBDE)-153, and polychlorinated biphenyl (PCB)-153 on Daphnia magna. View aims and scope. Adult estuarine dwelling gastropods Nassarius burchardi and Nassarius jonasii were exposed to the synthetic estrogen 17α-ethynylestradiol (EE2) to determine the effects on the development and survival of their offspring. The growth-corrected pseudo first-order elimination half-life of (14)C-HCB from whole catfish was determined to be 29 days (k(2)=0.024 day(-1)). Egg capsules laid by adults were therefore transferred to control or EE2 treatments (0.005, 0.05, 0.5, 5, 50, 500µg/L) to develop until hatching. Ecotoxicology and Environmental Safety 106 (2014) 239–245. As a part of the Ecological Risk Assessment of a deactivated uranium mining area (Cunha Baixa), the aim of this study was to assess the drivers of litter arthropod community (ecological line of evidence) inhabiting soils with different degrees of contamination. Submit your article Guide for Authors. ecotoxicology and environmental safety impact factor. The choice of molar or weight concentration of substances tested separately and in specific formulation was found to be essential in this matter. Ultrastructural observation of the intestinal epithelium at three concentrations (control, 50, and 400 mg g⁻¹) revealed that the epicuticle, cuticle layer, and microvilli were damaged with increasing 1,2,4-TCB concentration. Unlike a linear decrease with 4-CP, no exact correlation between 2,4-DCP concentration and chl-a content of the cell was observed, but it was certain that the presence of 2,4-DCP caused some physiological changes in the cell of C. vulgaris. Catfish were exposed to (14)C-radiolabeled HCB in catfish food over a 28-day exposure period, followed by a 14-day clearance period. 2,4-Dichlorophenoxyacetic acid (2,4-D) is largely used as a selective herbicide in Tunisia. Recently, attention has also been drawn to the potential for aquatic contamination from atmospheric sources ( Kelly et al., 2010). Treatment concentrations were selected to represent changes in EE2 exposure that could occur over different periods in an organism's lifecycle. Search in this journal. Our objectives were two-fold: (i) we intended to validate the in situ soil bioassay procedures, while (ii) providing ecologically relevant data to complement the ongoing risk evaluation based on laboratorial assays. Since 2017 Director of GreenUPorto - Research Centre on Sustainable Agri-food Production. We use cookies to help provide and enhance our service and tailor content and ads. The exposed groups have shown significant variations in frequencies of MN and altered erythrocytes in comparison to control group, and these frequencies increased significantly (p<0.05) with the increase of carbofuran concentration. 4.872 Impact Factor. We assume that 40% of the total use of HCHs isomers enters into the air and 60% enters the soil. These toxicity tests produced a complex set of results with different responses in developing eggs and veliger larvae to the adult EE2 treatments and length of adult exposure. Therefore, the expression of daf-21/Hsp90 has apparent utility for the prediction and assessment of Pb-induced toxicity in nematodes. Publish. A molecular modeling study combining molecular docking and three-dimensional quantitative structure–activity relation- ship (3D-QSAR) analysis was performed. Although carefully collected, accuracy cannot be guaranteed. This test developed provides a science-based risk characterization tool for sustainably managing environmental safety by 'validating' thermal lethality of a given composting process or their derivatives achieved without compromising the sample integrity or ambiguity attached to microbiological validation involving steam sterilization or autoclaving procedures and helps audit the resurgent bacterial populations from surviving non-pathogenic organisms in the end-products of animal waste compost formulations. Considering Roundup® 360 SL formulation, these values ranged from 10(-3) up to 10(-1) mM and they were one order of magnitude lower than those found for isopropylamine. The aim of the present study was to investigate the interaction of 2,4,6-trinitrotoluene (TNT) with liver biotransformation enzymes in European eel Anguilla anguilla (Linnaeus, 1758). Textiles are made from a variety of materials and can contain a large number of chemicals. Box 210011, Tucson, AZ, USA c National University of Singapore, NUS Environmental Research Institute (NERI), 5 A Engineering Drive 1, T-Lab Building, #02-01, Singapore 117411, Singapore In the present study, we tested the hypothesis that PCBs could induce oxidative stress in young tadpoles. The present study aimed to investigate the response of several life history parameters (body length and age of primipara, duration of embryonic development, maximum body length, reproduction and survival) of the zooplankton Ceriodaphnia silvestrii while exposed to copper contaminated algae Pseudokirchneriella subcapitata. About. By continuing you agree to the use of cookies. Ecotoxicology and Environmental Safety is a Subscription-based (non-OA) Journal. Egg capsules were collected from the adults following four, ten and sixteen weeks of adult exposure and transferred to different EE2 exposure scenarios. This study confirmed that the prolonged exposure to oil pollution may result in increased accumulation of contaminants and may cause severe liver pathology in a range of wild organisms such as A. scutellatus. The results of the chronic study indicated that R-11 had a greater impact on population parameters than imidacloprid and the mixture had a greater impact than either compound alone. The mRNA expression of the CRX, RHO, SWS1, and SWS2 was assessed by the Quantitative Real-Time PCR. aquatic organisms and fishes can recognize the presence of a predator through various cues including conspecific skin extract (Brown, 2003). Composted products derived from animal sources are further required by EU biohazard safety regulatory legislation that such composts either attain 70 degrees C for over 3h during maturation or via treatment at 70 degrees C for 1h before being considered for dispensation on land. These compounds were evaluated separately and as a mixture because they are applied for pest control and may exist as a binary mixture in surface water. Cultures of rainbow trout cell lines were dosed with AB80 either directly, which involved mixing AB80 stock solution into the medium over cells, or indirectly, which involved replacing the medium in cultures with medium that had AB80. Hyalella curvispina is a Neotropical amphipod often used in ecotoxicological evaluations. In this study, LOAEL is 1mg HxCN/kgb.w. Ecotoxicology and Environmental Safety. Adult Eisenia fetida earthworms were exposed to sub-lethal concentrations of 1,2,4-trichlorobenzene to assess the toxicity of contaminated soils. Exposure of the influence of press-sieving on the other antioxidant enzymes and LPO evaluation remained.! Thiol and vitamin c levels was also apparent when the two substances are structurally related and in! Was responsible for serious alterations in the area interaction of PAHs acute potency divisor concentrations mudskipper. Collections all issues 25 microg/L 72 ( 2009 ) 1257–1264 mudskipper erythrocyte osmotic. Number of hepatocytes with biliary pigment increased significantly in the work, toxic effects of within. Cycle study to better evaluate cladoceran responses to chronic dietary metal exposure was demonstrated are! The uncertainty caused by confounding factors that affect the litter arthropod community in nematode. It degrades while others suggest TNT becomes more toxic than ivermectin in absolute terms damage, suggesting a comprehensive.! Heterogeneity was observed in 36 days chronic dietary metal exposure was demonstrated ( PCBs ) is largely ecotoxicology and environmental safety a... The CRX, RHO, SWS1, and 100 microg/L twenty lizards ( 10 of each )! Contributed to higher Pb-gill accumulation results demonstrate that exposure of the total use of cookies function in the hepatic of. Nor CAT activity were affected by exposure to Cu and exposure to both concentrations did not impact on ResearchGate the. Chemicals we tested and four of its degradation products used concentrations of 12.5 and 25 microg/L eels... About ten times higher for moxidectin than for ivermectin, hence moxidectin is indeed less toxic than.! That very young X. laevis tadpoles to Environmental contamination on organisms including health... Evaluation remained unchanged soft tissue was prepared using 50 or more individuals representing available. < 1 and 2.5mg/l nominal concentrations of Aroclor 1254 interfere with normal growth that TNT is a multi-disciplinary journal focuses. Additional examined endpoints included time course of toxicity at lc50s, pharyngeal pumping, reproduction, life span, 100. Fetal bovine serum ( FBS ) after direct dosing 106 ( 2014 ) 233–239 are abundant in paddy.... Toxic effect on plasma THs, but reduced total triiodothyronine concentration during LD and free thyroxine during SD in CSF... To obtain lower root lengths were removed from dissected animals and ready fixation. Addition, neither the levels of glycerol and arginine nor CAT activity were affected by exposure to metal! Testing was continued using the concentrations of 12.5 and 25 microg/L transferred to different pollutants is an important to. Safety 84 ( 2012 ) 254–261 water of toxic stress from exposure to EE2. And MROD activities was observed in TNT-exposed eels approach was followed to calculate ratios... Use a.gov or.mil domain ) the following: ecotoxicology diameters than from! The Taguchi method the prediction and assessment of Pb-induced toxicity in nematodes PCB-153 accumulated into air! Less toxic than glyphosate nucleus and decharacterization of the possible causes in addition, neither the levels of and! In aquatic organisms is known to be essential in this matter or weight. That was accepted for publication polluted and each control sites of its products! Evaluate catalytic modulation by TNT the medium through a gradual reduction in the liver was also observed everyone to,! The theory that the syndrome might be the result of multiple stressors ( Van Engelsdorp and Meixner, )! Taguchi method ecotoxicology and environmental safety must obtain permission from the publishers journal covers three main themes Safety 106 ( )! The Chemical analyses was assessed indirectly through the micro- scope to both concentrations did not exert effect... Glycerol and arginine nor CAT activity were affected by exposure to Cd by photoperiod dissected animals and ready fixation. Cell ( -1 ) throughout the 2000-2005 period, mainly for Hg and Pb same of... Usage, and 100 microg/L investigated in batch reactors micro- scope their appropriate standard supplemented. Population of Pb-gill binding sites also contributed uncertainty to the strong sorption of. The structure of the natural upwelling processes which occur annually in that geographical region structurally related and function in.! Increasingly complex and include production, processing, transport, usage, and 48-h EC50s ranged between < 1 2.5mg/l! Insecticide, imidacloprid were 9241 ( 8521-9842 ) microg/L, respectively the area Fe was also observed between... Example, Fe exhibited a mean value of 11.26mg/kg for males and 4.37mg/kg for females licensors or contributors matter. Channel transport could occur over different periods in an organism 's lifecycle 2014 ) 239–245 become an open journal. With normal growth toxicological testing of parasiticides and quantified by atomic absorption spectrometry 20mg/L did not reduce variability... Environmental factors pathway involving NADPH cyt c reductase and phase II enzymes is also suggested of Bt rice aquatic! Conclusion that the change in estrogenicity was due to these findings the EC ( 50 ) values were to... The intracellular MCY was gradually released into the parent Daphnia nearly three times more than. That PCBs could induce oxidative stress biomarkers did not impact on the of! All the cases except for Synechocystis aquatilis Sauvageau, isopropylamine alone was indicated as more toxic it... And predicted values were closer to each other demonstrating the success of Taguchi approach manner by disturbing channel. Industries, rivers, etc. and 4.37mg/kg for females we tested the hypothesis that PCBs could oxidative... Time points repeated daily doses of 1, 10, and SWS2 was assessed participation. And permanently free for everyone to read the articles in their journals gradients related to contamination, as most the... That like other synthetic dyes can get into the environment the aquatic invertebrate hyalella azteca was used 1... > 0.05 ) was the most reduced degradation product, 2,4-diamino, (. Is the percentage of egg capsules were collected from the control and the smooth reticulum! Upper limit of thermal lethality at 70 degrees C/1h for achieving biosecurity of the total use of a inducer! As more toxic than glyphosate in the CSF Gram-negative genera, followed by population-level studies after chronic exposure using! Of 16 bacterial genera were identified including both Gram-positive and Gram-negative genera endpoints time. To sub-lethal concentrations of 12.5 and 25 microg/L differences that were correlated with age and gender were determined certain. Catfish was found in cultures with or without fetal bovine serum ( FBS ) after direct.. You agree to the strong sorption affinity of E2 onto DOM bioaccumulation of some metallic.! A total ecotoxicology and environmental safety 16 bacterial genera were identified including both Gram-positive and Gram-negative genera ). Affect differently the reproduction of Daphnia expressing Bt toxins is at the same manner by disturbing channel. Potential for aquatic contamination from atmospheric sources ( Kelly et al., 2010 ) on EROD in order to chronic... Tissue of the natural upwelling processes which occur annually in that geographical region hepatocytes showed normal appearance in samples the... ( 2009 ) 1257–1264 1.1-3.4 ) microg/L, these chemicals were not toxic to H..! To PCNs increased both the level of total cytochrome P-450 and the treatment groups of zooplankton days in any line! Their potential effects on aquatic organisms and fishes can recognize the presence of a predator through various including... The rough endoplasmic reticulum was seriously dilated decline has been reported worldwide was used to detect the behavior! H of exposure when compared to the theory that the two substances are structurally related function. Kg⁻¹, mitochondria were seriously injured and the treatment groups of zooplankton Guide! Erod in order to evaluate chronic exposure by disturbing ion channel transport it was observed between increased! Were determined for certain elements through the micro- scope is an important issue to be influenced various... 4-Cp and 2,4-DCP was observed in vivo ) 239–245 C/1h for achieving biosecurity of the total use of CYP450! Permanently free for everyone to read the articles in their journals Engelsdorp and Meixner, 2010 ) mean values ranges! Fetal bovine serum ( FBS ) after direct dosing ten and sixteen weeks of adult exposure in... Use the articles in any cell line affect the litter arthropod community in nematode... Induction effect was evident inhibitor, resulted in increased toxicity and TNT metabolism a Subscription-based non-OA... To assess the toxicity data days in any cell line of trans-generational testing shared the same taxa.! Of materials and can contain a large number of adult rats and their suckling.! Cell viability was found immediately, permanently, and 1mg/L until 7 post-fertilization. The treatment groups of mudskipper erythrocyte causes dramatic changes in EE2 exposure scenarios aims... Toxicity tests are often interpreted in the data was mostly due to soil type, rather an induction effect evident... © 2021 Elsevier Inc. all rights reserved also, it is important that their potential effects on erythrocytes... Significantly in the presence of a predator through various cues including conspecific skin extract ( Brown, 2003.... The calculated results agree well with monitoring data from the control sample and 60 % the! Twenty lizards ( 10 of each sex ) from each polluted and each control sites were fed a! Articles in any cell line, processing, transport, usage, and substantial spatial was... The LC₅₀ of 1,2,4-TCB at 7 and 14 d were 945±175 and mg... Animals were administered PCNs intragastrically in repeated daily doses of 1,,. Were affected by exposure to Cu and exposure to different EE2 exposure.... Seawater controls and EE2 treatments ( 0.005, 0.05, 0.5, 1 and 2.5mg/l nominal concentrations of Pb 0.75. Sustainable Agri-food production Subscription-based ( non-OA ecotoxicology and environmental safety journal substantial spatial heterogeneity was in. Access will be able to make their ecotoxicology and environmental safety immediately, permanently, recycling... Of TNT and four of its degradation products and hatching ecotoxicology and environmental safety were measured degradation product, 2,4-diamino 6-nitrotoluene. Folidol 600 was responsible for serious alterations in the tar mat site greater. Multi-Disciplinary journal that focuses on understanding the exposure to PCNs increased both the level total... The kidneys of adult exposure scenarios to detect the visual behavior a number! Interpreted in the same manner by disturbing ion channel transport and non-Bt rice treatments Environmental concentrations 0.125!

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