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| Registros recuperados: 200 | |
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| Chatel, Annelle; Faucet-marquis, Virginie; Gourlay-france, Catherine; Pfohl-leszkowicz, Annie; Hubert, Francoise. |
| The aim of the present study was to confirm the relevance of studying DNA adduct formation in a field study. In that context, freshwater mussels Dreissena polymorpha, collected in a reference station, were transplanted in different sites with a pollution gradient. After one and two months, mussels were collected and DNA adduct formation was analyzed using the 32P post labelling technique on both gills and digestive glands. In addition, the expression of genes involved in the detoxification system (catalase (CAT), superoxide dismutase (SOD), glutathione S-transferase (GST), HSP70, aryl hydrocarbon receptor (AHR), P glycoprotein (PgP), metallothionein (MT)) was assessed by RT-PCR. DNA adducts were observed at amount comparable to data from literature.... |
| Tipo: Text |
Palavras-chave: Biomarker; Pollution; DNA adducts; Detoxification; Dreissena polymorpha; RT-PCR. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00195/30639/32450.pdf |
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| Thewes,Márcia Regina; Endres Junior,Delio; Droste,Annette. |
| The genotoxicity of untreated and treated sewage from two municipal wastewater treatment plants (WTP BN and WTP SJN) in the municipality of Porto Alegre, in the southern Brazilian state of Rio Grande do Sul, was evaluated over a one-year period using the Tradescantia pallida var. purpurea (Trad-MCN) bioassay. Inflorescences of T. pallida var. purpurea were exposed to sewage samples in February (summer), April (autumn), July (winter) and October (spring) 2009, and the micronuclei (MCN) frequencies were estimated in each period. The high genotoxicity of untreated sewage from WTP BN in February and April was not observed in treated sewage, indicating the efficiency of treatment at this WTP. However, untreated and treated sewage samples from WTP SJN had high... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Effluent; Micronucleus; Mutagenicity; Pollution; Trad-MCN. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400023 |
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| Cassanego,Mara Betânia Brizola; Goldoni,Angélica; Heldt,Fágner Henrique; Osório,Daniela Montanari Migliavacca; Windisch,Paulo Günter; Droste,Annette. |
| Regnellidium diphyllum Lindm. is a heterosporous fern growing in wetlands and humid soils that are being converted to agricultural activities. Many products that are used in agriculture contain copper, resulting in surface and groundwater contamination. Germination and initial development tests were performed using Meyer's solution containing copper sulphate at concentrations of 0 (control), 1, 5, 10, 50 and 100 mg L-1. The experiment was conducted in a growth chamber at 25 ± 1ºC for 28 days, with a 12/12-hour light/dark cycle and a photon flux density of 100 µmol m-2 s-1. The lowest germination rate (6%) was observed at 100 mg L-1. Primary root growth was significantly reduced at > 10 mg L-1. Secondary leaves of sporophytes grown in concentrations >... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fern; Heavy metals; Pollution; Reproduction; Species conservation; Wetlands. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062013000100004 |
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| Khaled, A.. |
| The distribution of eight heavy metals (Cd, Cr, Cu, Fe, Mn, Ni, Pb nd Zn) were detected in muscles, gills, livers and bones of five fish species namely, Sargus sargus, Siganus rivulatus, Mugil cephalus, Caranx crysos and Scomberomorus commerson collected from El-Mex Bay, Alexandria during January 2003. Iron and zinc were most abundant in all fish tissues under investigation. Iron, zinc and copper recorded highest concentration levels in liver while cadmium, cromium and lead recorded their highest values in gills and bones. Provisional Tolerable Weekly Intake (PTWI) demonstrated that the concentration of metals (Cd, Cu, and Pb) in muscles of the five fishes are lower than the PTWI values, and accordingly there is no risk yet for human consumption of flesh... |
| Tipo: Journal Contribution |
Palavras-chave: Heavy metals; Pollution; Fish; El-Mex Bay; Alexandria; Egypt Accumulation Fish consumption. |
| Ano: 2004 |
URL: http://hdl.handle.net/1834/1086 |
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| Gnandi, K.; Tobschall, H.J.. |
| Metal concentrations of 37 soil samples taken from mining areas (abandoned mine pits and transport routes) in Kpogamé and Hahotoé (southern Togo) range from 0.2-43 ppm for Cd, 15-115 ppm for Pb, 182-1,029 ppm for Cr, 18-356 ppm for Cu, 15-342 pm for Ni, 90-513 ppm for V, 35-536 ppm for Zn, 80-469 ppm for Zr and 266-3,161 ppm for Sr. The tropical alteration of the ore waste plays an important role in the distribution of trace elements in the studied soils. Because the alteration affects the element mobility, generally old abandoned mining areas, which , together with soils near the transport routes, show a higher degree of contamination. Under low pH and oxidising conditions in studied soils Cd, Ni and Zn are generally easily mobilised and are thus... |
| Tipo: Journal Contribution |
Palavras-chave: Heavy metals; Mining; Phosphorite; Pollution; Heavy metals; Pollution; Http://aims.fao.org/aos/agrovoc/c_2223; Http://aims.fao.org/aos/agrovoc/c_6077. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/2715 |
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| Souza,Maria Verônica de; Fontes,Maurício Paulo Ferreira; Fernandes,Raphael Bragança Alves. |
| The objective of this research was to determine the concentration of heavy metals in the blood (Pb, Ni and Cd), serum (Cu and Zn) and hair (Pb, Ni, Cd, Cu and Zn) of horses raised in non-industrial and industrial areas (with steel mill), and to verify the possibility to use these data as indicators of environmental pollution. The samples were collected during summer and winter, aiming to verify animal contamination related to environment and season of the year. Copper and Zn contents determined in the serum and Cd and Ni contents obtained in the blood indicated no contamination effects of industries. For some animals, contents of Pb in the blood were higher than those considered acceptable for the species, but without relationship with industrialization... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bio-indicators; Environmental monitoring; Environmental quality; Horses; Pollution. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000200002 |
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| Ullah,Sana; Hussain,Zaqhim; Mahboob,Shahid; Al-Ghanim,Khalid. |
| ABSTRACT This study was conducted in the River Panjkora, Pakistan, in order to assess the level of heavy metals accumulated in the liver, kidneys, gills and muscle tissues of three highly consumed fish species by the local community, Garra gotyla, Cyprinus carpio and Cyprinion watsoni. The heavy metals including manganese (Mn), iron (Fe), chromium (Cr), zinc (Zn), lead (Pb), cadmium (Cd) and nickel (Ni) were determined in the collected fish specimens through an atomic absorption spectrophotometer. Level of heavy metals significantly varied depending upon tissues type and fish species. Cyprinus carpio accumulated highest concentration of heavy metals, followed by Garra gotyla while Cyprinion watsoni accumulated least concentration of heavy metals. All the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: River; Control site; Tissues; Pollution; Heavy Metals. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100702 |
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| Cachot, Jerome; Cherel, Yan; Larcher, Thibaut; Pfohl-leszkowicz, Annie; Laroche, Jean; Quiniou, Louis; Morin, Jocelyne; Schmitz, Julien; Burgeot, Thierry; Pottier, Didier. |
| An epidemiological survey was conducted in the Seine estuary and in two smaller and relatively preserved estuaries on the French Atlantic coast in order to estimate the occurrence of liver lesions in European flounder, Platichthys flesus, and also to seek putative risk factors for the recorded pathologies. Four hundred and seventy-eight fish of both sexes and of different size ranges were sampled in the three studied areas, 338 of which in the Seine estuary. All fish were examined for histopathological liver lesions, while DNA adducts and otoliths were analyzed on a subsample. Five categories of hepatic lesions were recorded with the following prevalence for the Seine estuary: 36.7 % inflammations, 8 % parasites (mainly encysted nematodes), 6.5 % foci of... |
| Tipo: Text |
Palavras-chave: Epidemiological study; European flounder; Seine estuary; Liver histopathology; Necrosis; FCA; Tumors; Inflammations; Parasites; DNA adducts; Pollution. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00125/23576/21498.pdf |
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| Bastías,José M; Jambon,Philippe; Muñoz,Ociel; Manquián,Nimia; Bahamonde,Patricia; Neira,Miguel. |
| The content of heavy metals in honey is indicative of natural or anthropogenic pollution and has therefore been proposed as a feasible bioindicator for arsenic contamination in different regions of Chile. Total arsenic (t-As) and inorganic As (i-As) concentrations were determined in 227 samples of honey harvested during the years 2007, 2008, and 2009 in the areas of San Pedro de Atacama, Atacama, Chiloé, and Futaleufú, with the last town located 156 km from the Chaitén Volcano (latest eruption in 2008). These analyses were conducted using an atomic absorption spectrophotometer coupled with a hydride generator. In the honey samples, the concentrations of t-As ranged from 2.2 to 171.9 μg kg-1, and the i-As concentrations ranged from none detected... |
| Tipo: Journal article |
Palavras-chave: Honey; Bioindicator; Total arsenic; Inorganic arsenic; Pollution. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200010 |
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| Niquil, Nathalie; Kerleguer, G; Leguerrier, D; Richard, Pierre; Legrand, Helene; Dupuy, Christine; Pascal, P; Bacher, Cedric. |
| The presence of herbicides in the run-off water coming over Brouage mudflat (Marennes-Oleron Bay, France) is suspected to cause a loss of primary production by benthic diatom biofilm. Microphytobenthos being the main primary producer of this ecosystem, it was questioned about what could be the effect of such a modification of primary production on the entire food web that depends on it. The probable impacts were investigated through a sensitivity analysis conducted on the steady-state model of the Brouage mudflat, coupling two seasons and trophic-hydrodynamic flows. The loss of benthic primary production had an effect on compartments at a low trophic level, but was buffered at higher levels because of the compensation of herbivory by other pathways and... |
| Tipo: Text |
Palavras-chave: Intertidal mudflat food web; Pollution; Microphytobenthos; Inverse analysis; Sensitivity analysis. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-3613.pdf |
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| Hartmann, Sharonn Martins Gonçalves; Rozário, Hérica; Affonso, Ana Lucia Suriani. |
| Benthic macroinvertebrates are used as environmental bioindicators in the assessment of water quality in rivers and lakes, due to the sensitivity of some taxa to pollution. The objective of this research was to evaluate the consequences of industrial effluent discharge on the structure of the benthic community present in a river in the subtropical region of Brazil. The organisms were collected at three points of the Coutinho River, in 2013 (September and November) and 2014 (January and March). To characterize the community were calculated density, Shannon diversity index (H´), Pielou equitability (J), taxa richness, Biotic Indices (Biological Monitoring Working Party - BMWP, Average Score Per Taxon - BMWP-ASPT, Family Biotic Index – FBI) and Canonical... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biotic index; Pollution; Zoobenthos.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/45536 |
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| Martin, Jean-louis; Haure, Joel; Thebault, Anne; Goulletquer, Philippe. |
| The evaluation of the ecological and economical consequences of the hydrocarbon pollution of the Erika implies the setting up of monitorings, analysis and experiments in the short, medium and long term. Among the consequences to be evaluated, a great deal of attention has to be paid to the direct impact on the biology and production performances of the main shellfish species as about 30% of the national production (around 130,000 tons of oysters and 60,000 tons of mussels per year) is cultivated in the impacted area. The main difficulty in evaluating the effects of the contaminants on a distinct part of the ecosystem which is mostly dominated by a cultured population dwells in the different approaches to set up as well as the variability of the answers... |
| Tipo: Text |
Palavras-chave: Pathologie; Ecophysiologie; Conchyliculture; Impact; Hydrocarbures; Pollution. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/acte-3308.pdf |
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| Thebault, Anne; Robert, Maeva; Renault, Tristan; Dumais, M.; Goulletquer, Philippe. |
| Après le naufrage de l'Erika, la question s'est rapidement posée de l'impact des hydrocarbures sur la santé des coquillages, car la pollution concernait des zones de production conchylicoles. Le suivi zoosanitaire en place dans ces zones permettait d'avoir des données de référence avant impact. Il a été choisi différents sites exposés de référence, qui ont fait l'objet d'analyse en toxicologie et en pathologie. A la différence du cas de l'Arnoco Cadiz, l'effort n'a pas été mis uniquement sur les huîtres mais aussi sur d'autres espèces de coquillages, comme les moules et des fouisseurs, particulièrement exposés comme les coques et les palourdes. La mesure de l'exposition effectuée par la Direction de l'Environnement Littoral (MONERlKA) montre qu'une... |
| Tipo: Text |
Palavras-chave: Pollution; Pathologie; Hydrocarbures; Coquillages; HAP; Histologie; Finistère; Vendée. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/00087/19826/17468.pdf |
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| Achab, M.; El hatimi, I.; El moumni, B.. |
| Dans le but d’évaluer le degré de contamination chimique et/ou organique des sédiments superficiels le long des émissaires continentaux, des échantillons de sédiments de surface ont été prélevés et analysés le long des oueds Souani et Mghogha et au niveau de la canalisation majeure de la ville de Tanger débouchant sur la baie située sur la marge méditerranéenne marocaine. La dynamique sédimentaire dans les oueds montre exceptionnellement une évolution amont–aval granocroissante en relation avec l’activité anthropique (remblaiement des bassins versants par les matériaux de construction tels que les briques, ciments, verres, etc.). La matière organique est présente à des teneurs relativement élevées en corrélation positive avec la sédimentation fine. L’azote... |
| Tipo: Journal Contribution |
Palavras-chave: Sedimentology; Mineralogy; Pollution; Geochemical surveys; Bay dynamics. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/199 |
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| Kebreab,Ermias; Strathe,Anders; Fadel,James; Moraes,Luis; France,James. |
| The growing global demand for meat and particularly in countries such as Brazil is expected to increase intensive animal production. Consequently the main pollutants of interest are nitrogen (N), phosphorus (P) and greenhouse gases (GHG). Nitrogen can be a problem through nitrate leaching to water bodies, ammonia, and nitrous oxide emissions to air. Phosphorus loading in soil from manure application can be the main issue due to the tendency of P to accumulate in soil and leach to groundwater and rivers. The sources of agricultural GHG emissions include methane from enteric fermentation, manure storage and spreading, and nitrous oxide mainly from application of manure on land. Dietary manipulation has proven to be an effective tool to reduce... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Methane; Nitrogen; Phosphorus; Pollution; Ruminants. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001300050 |
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| Ferreira,Maria Izildinha; Rodrigues,Geraldo Stachetti; Domingos,Marisa; Saldiva,Paulo Hilário do N.. |
| The Tradescantia stamen hair mutation assay (Trad-SHM) was employed for assessing the environmental mutagenesis in two areas of São Paulo City. The study sites were defined as follows: 1) Celso Garcia Avenue, an industrial area on the outskirts of the urban center (Belém neighborhood), with an average daily traffic volume of 8,750 vehicles; 2) Doutor Arnaldo Avenue, in downtown area (Pinheiros neighborhood), with a mostly residential and business offices occupation, with an average daily traffic volume of 46,125 vehicles. The negative control (background) site is located in the city of Jaguariúna, 138 km from São Paulo, in an area of low atmospheric pollution. The mutation frequency observed for Belém was similar to the background for clone 4430, whereas... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pollution; Mutagenesis; Bioassay; Tradescantia. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000200017 |
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| Registros recuperados: 200 | |
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