abstract：:During desert locust plagues large amounts of insecticides are used for control operations. Drift from these treatments and accidental overspraying may contaminate small surface waters such as temporary ponds. The present study describes methods for static acute toxicity tests with two abundant organisms that occur in...

journal_title：Ecotoxicology and environmental safety

authors： Lahr J,Badji A,Marquenie S,Schuiling E,Ndour KB,Diallo AO,Everts JW

更新日期：2001-01-01 00:00:00

abstract：:The behavior of lead and cadmium in a protozoan community was studied in order to obtain new data regarding the toxicity and bioaccumulation of these heavy metals. For this purpose, microcosms with different concentrations of the pollutants (without metals, 500 microg Cd and Pb x L(-1) 1,000 microg Cd and Pb x L(-1)) ...

journal_title：Ecotoxicology and environmental safety

authors： Fernandez-Leborans G,Herrero YO

更新日期：2000-11-01 00:00:00

abstract：:A novel phosphorothionate (2-butenoic acid-3-(diethoxy phosphinothioyl)-methyl ester (RPR-II), synthesized at the Indian Institute of Chemical Technology, Hyderabad, targets its effect on rat brain acetylcholinesterase (AChE) and Na(+)-K(+), Mg(2+), and Ca(2+) ATPases, as evident in this investigation. Three subchroni...

journal_title：Ecotoxicology and environmental safety

authors： Rahman MF,Siddiqui MK,Jamil K

更新日期：2000-10-01 00:00:00

abstract：:Investigations were undertaken to elucidate in a marine mammal renal cell culture system the toxicity and some of the mechanisms of cytopathology in a standardized preparation following exposure to No. 1 fuel oil. Cell survivability of a cultured SP1K renal cell line from the Atlantic spotted dolphin Stenella plagiodo...

journal_title：Ecotoxicology and environmental safety

authors： Pfeiffer CJ,Sharova LV,Gray L

更新日期：2000-10-01 00:00:00

abstract：:In situ bioassays are becoming very popular for laboratory test validation and field extrapolation. Natural conditions, including environmental variables, affect the "behavior" of contaminants and, consequently, their toxicity. This work aimed to develop protocols for in situ chronic bioassays with cladocerans and to ...

journal_title：Ecotoxicology and environmental safety

authors： Pereira AM,Soares AM,Gonçalves F,Ribeiro R

更新日期：2000-09-01 00:00:00

abstract：:Although Tubifex tubifex (Oligochaeta, Tubificida) has been proposed as a test organism for ecotoxocological studies, very few data concerning sublethal toxicity and bioaccumulation are available on this worm. The aims of this work were to assess the toxicity of cadmium, one of the most toxic metals frequently encount...

journal_title：Ecotoxicology and environmental safety

authors： Bouché ML,Habets F,Biagianti-Risbourg S,Vernet G

更新日期：2000-07-01 00:00:00

abstract：:Food response preceding and following exposure to Cu concentrations of 0.00, 0.02, and 0.2 mg/L was observed in male and female Cambarus bartonii from an uncontaminated, freshwater lake. The animals were tested in a Y-maze. Control animals demonstrated food localization, and the treated animals, either no localization...

journal_title：Ecotoxicology and environmental safety

authors： Sherba M,Dunham DW,Harvey HH

更新日期：2000-07-01 00:00:00

abstract：:Carassius auratus were exposed to lead in synthetic water. Mucus secreted from the fish was measured and characterized for its lead binding capacity. The increase in mucus concentration in the water depended on secretion and degradation rates and the former was speeded up by lead. The complexation between mucus and le...

journal_title：Ecotoxicology and environmental safety

authors： Tao S,Li H,Liu C,Lam KC

更新日期：2000-06-01 00:00:00

abstract：:To provide insight into aluminum speciation in raw and in finished water and to investigate the factors that can affect it, specific aluminum fractions have been isolated and analyzed in water samples from three drinking water reservoirs in Sardinia (Italy) and at the outlet of their treatment plants. All water treatm...

journal_title：Ecotoxicology and environmental safety

authors： Schintu M,Meloni P,Contu A

更新日期：2000-05-01 00:00:00

abstract：:The present study aims to answer the question whether the amount of metal in aquatic biota reflects the concentrations in the sediment and water, and whether the physico-chemical properties of the water and sediment have any influence on the suspected relationship. A study was made of 101 small streams in the city of ...

journal_title：Ecotoxicology and environmental safety

authors： Widianarko B,Van Gestel CA,Verweij RA,Van Straalen NM

更新日期：2000-05-01 00:00:00

abstract：:A conductivity assay that represents a new biotest able to detect the effects of membrane-toxic compounds, e.g., detergents, organic solvents, and radical formers, on various organisms was previously described and developed. The conductivity assay measures ion leakage from cells, tissues, or whole plant and animal org...

journal_title：Ecotoxicology and environmental safety

authors： Eich J,Dürholt H,Steger-Hartmann T,Wagner E

更新日期：2000-03-01 00:00:00

abstract：:The biocide tributyltin has been found to cause the development of pseudohermaphroditic conditions in some neogastropod species. These abnormalities of the reproductive system have adversely affected the fecundity of some field populations of gastropods, resulting in local population declines. Current evidence suggest...

journal_title：Ecotoxicology and environmental safety

authors： LeBlanc GA,McLachlan JB

更新日期：2000-03-01 00:00:00

abstract：:Antioxidant systems were studied in the freshwater bivalve Unio tumidus transplanted from a control site to four different contaminated areas, in order to study the biological response according to the contamination characteristics. Reduced and oxidized glutathione (GSH, GSSG), the activities of antioxidant enzymes su...

journal_title：Ecotoxicology and environmental safety

authors： Cossu C,Doyotte A,Babut M,Exinger A,Vasseur P

更新日期：2000-02-01 00:00:00

abstract：:The possible contamination of groundwater by the insecticides acephate and methamidophos was assessed using the behavior assessment model (BAM) and the groundwater pollution-potential model (GWP). The dissipation coefficients of the two insecticides in two soils (Annei silt loam and Pingchen silt clay loam) at differe...

journal_title：Ecotoxicology and environmental safety

authors： Yen JH,Lin KH,Wang YS

更新日期：2000-01-01 00:00:00

abstract：:The differences in xenobiotic chemical content between organic and nonorganic products can be chemically measured. In this study, the deoxynucleotide composition of strawberry samples is used to demonstrate chromatographic methods of quantifying the differences between pesticide- and toxic-exposed strawberries. The sa...

journal_title：Ecotoxicology and environmental safety

authors： Podwall D,Dresner HS,Lipetz J,Steinberg JJ

更新日期：1999-11-01 00:00:00

abstract：:Cymbush (100 g of pure cypermethrin/liter of petroleum ether) was added to sucrose syrup at 12.5 microg/L and given to honeybee colonies (Apis mellifera mellifera, L.) in their diet for 5 months (July to November). Many perturbations have been recorded in treated groups in contrast to controls placed in the same area....

journal_title：Ecotoxicology and environmental safety

authors： Bendahou N,Fleche C,Bounias M

更新日期：1999-10-01 00:00:00

abstract：:Four marine microalgal species (Chlorella autotrophyca, Nannochloropsis gaditana, Tetraiselmis chuii, and Isochrysis aff. galbana) were exposed for 24 h to 1 mg L(-1) dissolved copper and then transferred to fresh medium. After that, a group of 10 neonate rotifers were fed with these four microalgal species. The level...

journal_title：Ecotoxicology and environmental safety

authors： Moreno-Garrido I,Lubián LM,Soares AM

更新日期：1999-10-01 00:00:00

abstract：:Senegales sole, Solea senegalensis, adult specimens were subjected to sublethal copper exposure (100 microg SO(4)Cu/L) for 7 days (contamination period) and afterward kept for 4 days without copper exposure (depuration period). In contaminated and detoxified specimens, the hepatocytes indicated a great number of lipid...

journal_title：Ecotoxicology and environmental safety

authors： Arellano JM,Storch V,Sarasquete C

更新日期：1999-09-01 00:00:00

abstract：:The study evaluated contamination of fish by mercury in two important Czech water reservoirs, Orlík and Kamýk, which receive water from the whole watershed of Otava and Vltava rivers. Contamination of these reservoirs reflects the situation in southern and western Bohemia. Six environmentally representative sites were...

journal_title：Ecotoxicology and environmental safety

authors： Svobodová Z,Dusek L,Hejtmánek M,Vykusová B,Smíd R

更新日期：1999-07-01 00:00:00

abstract：:The potential for using pink hydra (Hydra vulgaris) and green hydra (Hydra viridissima) as a model invertebrate for the toxicity testing of xenobiotics was investigated. Test compounds were 4-chlorophenol, endosulfan, and copper. The reference toxicant 4-chlorophenol was used as a standard during toxicity testing to e...

journal_title：Ecotoxicology and environmental safety

authors： Pollino CA,Holdway DA

更新日期：1999-07-01 00:00:00

abstract：:Current risk assessment procedures ignore that variation in soil properties results in substantial differences for uptake and effects in organisms in different soils. In this contribution is presented the results of a study on the soil-related factors that modulate metal uptake and elimination by the oligochaete worm ...

journal_title：Ecotoxicology and environmental safety

authors： Peijnenburg WJ,Posthuma L,Zweers PG,Baerselman R,de Groot AC,Van Veen RP,Jager T

更新日期：1999-06-01 00:00:00

abstract：:The potential for biodegradation of s-triazine pesticides was investigated in laboratory batch and sequence batch experiments using a stable mixed bacterial community enriched on atrazine. The experiments were performed aerobically in a mineral salt solution complemented with a mixture of s-triazines as sole carbon an...

journal_title：Ecotoxicology and environmental safety

authors： Kontchou CY,Gschwind N

更新日期：1999-05-01 00:00:00

abstract：:Exposure to impaired water quality, as in bleached kraft mill effluents (BKMEs), has recently been demonstrated to impair the ability of fish to elicit an acute stress response. Acute stress caused by catching is, in most field studies, an unavoidable incident that may markedly affect physiological functions. Consiste...

journal_title：Ecotoxicology and environmental safety

authors： Lappivaara J,Oikari A

更新日期：1999-03-01 00:00:00

abstract：:Of the several pesticides used in the pest management strategy for cotton, endosulfan is ranked as having the greatest impact on the riverine ecosystem. A survey of changes in the densities of six abundant macroinvertebrate taxa (ephemeropteran nymphs Jappa kutera, Atalophlebia australis, Tasmanocoenis sp., and Baetis...

journal_title：Ecotoxicology and environmental safety

authors： Leonard AW,Hyne RV,Lim RP,Chapman JC

更新日期：1999-02-01 00:00:00

abstract：:Heavy metal content of agricultural topsoils has been experimentally determined at 14 areas in the German Leipzig-Halle-Bitterfeld region covering ca. 3700 km2. For most of the locations and elements, the contamination levels are comparable to those of other agricultural sites in Germany and Europe. Application of a s...

journal_title：Ecotoxicology and environmental safety

authors： Manz M,Weissflog L,Kühne R,Schürmann G

更新日期：1999-02-01 00:00:00

abstract：:Enzymes of phase I and phase II of the xenobiotic detoxication pathway (ethoxyresorufin-O-deethylase, peroxidases, microsomal and soluble glutathione-S-transferases) were measured in roots, stems, and leaves of Phragmites australis, revealing different enzyme activities in these parts. Highest enzyme activities were m...

journal_title：Ecotoxicology and environmental safety

authors： Pflugmacher S,Geissler K,Steinberg C

更新日期：1999-01-01 00:00:00

abstract：:Electrophoretic analysis of Littorina littorea esterases indicated the presence of a cathodal migration isoenzyme (EST-C), which was identified in extracts obtained from the gonad-digestive gland complex. A loss of EST-C enzyme activity was observed in individuals exposed to Cd2+. This loss of activity was complete in...

journal_title：Ecotoxicology and environmental safety

authors： Mazón LI,Gonzalez G,Vicario A,Estomba A,Aguirre A

更新日期：1998-11-01 00:00:00

abstract：:Toxicity of ash and particulate matter from the gases generated in coal fluidized bed combustion (FBC) has been determined by the Microtox assay according to the standard leachate procedure. Results are compared with the polycylic aromatic hydrocarbon (PAH) content of the particulate matter, which was determined by fl...

journal_title：Ecotoxicology and environmental safety

authors： Callén M,Marañón E,Mastral A,Murillo R,Salgado P,Sastre H

更新日期：1998-09-01 00:00:00

abstract：:Effects of effluents from mechanical pulp production on brown trout were studied for 8 weeks at environmentally relevant concentrations. The exposure took place in laboratory-based pools upstream and downstream of the effluent discharge point of an integrated newsprint mill using ground wood/thermomechanical pulp. The...

journal_title：Ecotoxicology and environmental safety

authors： Johnsen K,Tana J,Lehtinen KJ,Stuthridge T,Mattsson K,Hemming J,Carlberg GE

更新日期：1998-07-01 00:00:00

abstract：:Ecological risk assessment is defined both in theory and in practice. To do it properly, we need to know what targets we are protecting, but these targets are not always obvious and clearly defined. The pragmatic approach, used most generally in the context of environmental protection legislation, is the risk quotient...

journal_title：Ecotoxicology and environmental safety

authors： Calow P

更新日期：1998-05-01 00:00:00

abstract：:Although amphipod toxicity tests have been successfully used in the United States to assess coastal sediment toxicity, few tests have been developed with European species. The authors have been working with the amphipod Gammarus locusta, a widely spread species along European coastal areas that is particularly abundan...

journal_title：Ecotoxicology and environmental safety

authors： Costa FO,Correia AD,Costa MH

更新日期：1998-05-01 00:00:00

abstract：:The biological self-purification processes are a central point for the ecological states of rivers. The degradation efficiency of pollutants is mainly due to the microflora and can be detected with enzyme-activity tests. Extracellular-enzyme activity of freshwater sediments was measured, in a microcosm, versus differe...

journal_title：Ecotoxicology and environmental safety

authors： Montuelle B,Volat B

更新日期：1998-05-01 00:00:00

abstract：:Median lethal concentration (LC50) and dose (LD50) for 217 chemicals were compared over several exposure routes in rainbow trout and rats. Data were compiled primarily from on-line databases and included octanol-water partition coefficient (Kow), trout LC50, and trout and rat LD50 for oral, dermal, and intraperitoneal...

journal_title：Ecotoxicology and environmental safety

authors： Delistraty D,Taylor B,Anderson R

更新日期：1998-03-01 00:00:00

abstract：:Conventional statistical approaches rely heavily on the properties of the central limit theorem to bridge the gap between the characteristics of a sample and some theoretical sampling distribution. Problems associated with nonrandom sampling, unknown population distributions, heterogeneous variances, small sample size...

journal_title：Ecotoxicology and environmental safety

authors： Pitt DG,Kreutzweiser DP

更新日期：1998-02-01 00:00:00

abstract：:The toxicity of lindane, hexachlorobenzene, and copper sulfate to Tubifex tubifex and Limnodrilus hoffmeisteri was determined using an easily applicable and standardizable 72-h short-term test system. It was designed for the quick assessment of sublethal and lethal effects of sediment-associated chemicals on the worms...

journal_title：Ecotoxicology and environmental safety

authors： Meller M,Egeler P,Römbke J,Schallnass H,Nagel R,Streit B

更新日期：1998-01-01 00:00:00

abstract：:European eel (Anguilla anguilla) were exposed to sublethal fenitrothion concentrations in a continuous flow-through system for 4 days. Brain acetylcholinesterase (AChE) activity was evaluated after 2, 8, 12, 24, 32, 48, 56, 72, and 96 h pesticide exposure. Results indicated that AChE activity in eel brains decreased a...

journal_title：Ecotoxicology and environmental safety

authors： Sancho E,Ferrando MD,Andreu E

更新日期：1997-12-01 00:00:00

abstract：:In this study the authors quantify, and correlate, whole-cell elemental levels of vorticellids in activated sludge, over a 1-year period, and Aspidisca cicada and Opercularia coarctata on one sampling date. The aim was to determine the extent, and seasonal variation, of metal uptake and/or accumulation, to give new in...

journal_title：Ecotoxicology and environmental safety

authors： Abraham-Peskir JV,Butler RD,Sigee DC

更新日期：1997-12-01 00:00:00

abstract：:Mercury is a neurotoxic agent that produces different effects on the brain. In the present work, the effects of chronic doses of methyl mercury (MeHg) were studied on the dopaminergic system of the rat striatum, using microdialysis coupled to high-performance liquid chromatography in order to quantify the in vivo rele...

journal_title：Ecotoxicology and environmental safety

authors： Faro LR,Durán R,do Nascimento JL,Alfonso M,Picanço-Diniz CW

更新日期：1997-11-01 00:00:00

abstract：:Effects of chronic concentrations of linuron (0, 0.5, 5, 15, 50, and 150 micrograms/L) were studied in indoor, macrophyte dominated, freshwater microcosms. The concentrations were kept at a constant level for 4 weeks. This paper is the first in a series of two and summarizes the course of the linuron concentrations in...

journal_title：Ecotoxicology and environmental safety

authors： Van den Brink PJ,Hartgers EM,Fettweis U,Crum SJ,Van Donk E,Brock TC

更新日期：1997-10-01 00:00:00

abstract：:To test the hypothesis that broad spectrum antibodies may be developed as biomarkers useful in detecting the consequence of combined environmental stresses in a wide variety of tissues and organisms, a stretch of 16 amino acids, TVPAYFNDSQRQATKDA, a well-conserved portion of heat shock 70 proteins, was identified, aga...

journal_title：Ecotoxicology and environmental safety

authors： Dunlap DY,Matsumura F

更新日期：1997-08-01 00:00:00