Metagenomics of wastewater phageome identifies an extensively cored antibiotic resistome in a swine feedlot water treatment environment.

abstract：:The hypothesis that growth hormesis represents an overcompensation to a disruption in homeostasis was supported in experiments assessing the effects of the synthetic plant growth inhibitor phosfon (2,4-dichlorobenzyl tributyl phosphonium chloride) on peppermint. While dose-dependent decreases in growth occurred initia...

journal_title：Ecotoxicology and environmental safety

authors： Calabreseci EJ

更新日期：1999-02-01 00:00:00

abstract：:Wildlife species inhabiting contaminated sites are often exposed to complex mixtures of chemicals, many of which have known effects on physiological and biochemical function. Although sensitivity of the immune system to chemical exposure has been documented in laboratory animal and wildlife species, little work has be...

journal_title：Ecotoxicology and environmental safety

authors： McMurry ST,Lochmiller RL,McBee K,Qualls CW Jr

更新日期：1999-03-01 00:00:00

abstract：:Exposure of the collembolan Folsomia fimetaria L. to nickel via soil caused significant mortality and reduced growth and reproductive output. Nickel may be present in elevated concentrations due to anthropogenic discharge. Although collembolans are very numerous and important organisms in the soil ecosystem, the effec...

journal_title：Ecotoxicology and environmental safety

authors： Scott-Fordsmand JJ,Krogh PH,Hopkin SP

更新日期：1999-05-01 00:00:00

abstract：:The degenerative process of the myofibers of the diaphragm of rats intoxicated with the organophosphate isofenphos, a compound that inhibits esterases, was studied at different intervals of intoxication. Early disorganization of the intermyofibrillar network and of the myofilaments, as well as dilatation of organelles...

journal_title：Ecotoxicology and environmental safety

authors： Calore EE,Sesso A,Puga FR,Cavaliere MJ,Calore NM,Weg R

更新日期：1999-06-01 00:00:00

abstract：:With the aim of applying recent quantitative structure-activity relationship (QSAR) descriptors coming from the pharmaceutical sciences to the modelization of ecotoxicity data, this work deals with the establishment of 3D-QSAR on chlorophenols by using for the first time in this field the recent CATALYST software. The...

journal_title：Ecotoxicology and environmental safety

authors： Briens F,Bureau R,Rault S

更新日期：1999-07-01 00:00:00

abstract：:Aphanizomenon flos-aquae, a cyanobacterium that is marketed as a health food supplement, is harvested from natural blooms in Klamath Lake (Oregon) that are occasionally contaminated by Microcystis spp. Regulatory agencies in several countries are developing regulations to control the amount of microcystin in drinking ...

journal_title：Ecotoxicology and environmental safety

authors： Schaeffer DJ,Malpas PB,Barton LL

更新日期：1999-09-01 00:00:00

abstract：:The genetic modified Pseudomonas fluorescens Br 12, resistant to kanamycin and rifampycin, was used to follow the cotransport of the organochlorine acaricide dicofol through a nonsterilized soil column. P. fluorescens was found to bioaccumulate dicofol with the highest bioconcentration factor of 279 within 30 min. Sep...

journal_title：Ecotoxicology and environmental safety

authors： Brunninger BM,Mano DM,Scheunert I,Langenbach T

更新日期：1999-10-01 00:00:00

abstract：:The effects of various water characteristics in natural freshwaters on the acute toxicity of one polycyclic aromatic hydrocarbon (PAH), pyrene, to a pelagic invertebrate Daphnia magna was studied under ultraviolet B (UV-B) radiation and in the dark. Pyrene was photoactivated and was more toxic to D. magna in the prese...

journal_title：Ecotoxicology and environmental safety

authors： Nikkilä A,Penttinen S,Kukkonen JV

更新日期：1999-11-01 00:00:00

abstract：:The uptake, toxicity, and elimination of atrazine and trifluoroacetate (TFA) were studied in early life stages of the zebrafish (Danio rerio). Furthermore, the effects of these xenobiotics on soluble (s) and microsomal (m) glutathione S-transferases (GST) of zebrafish embryos were investigated using 1-chloro-2,4-dinit...

journal_title：Ecotoxicology and environmental safety

authors： Wiegand C,Pflugmacher S,Giese M,Frank H,Steinberg C

更新日期：2000-02-01 00:00:00

abstract：:This study explored the use of luminescent bacteria (Vibrio fischeri) for chronic aquatic toxicity tests. The evaluated inhibition of growth to Cu2+, Cr6+, Zn2+, Hg2+, Cd2+, Pb2+, cetyl-trimethylammonium bromide, 3,4-dichloroaniline, acetone, dimethylsulfoxide, ethanol, nitrobenzene, methanol, and 3,5-dichlorophenol w...

journal_title：Ecotoxicology and environmental safety

authors： Gellert G

更新日期：2000-01-01 00:00:00

abstract：:Methemoglobin, a toxic ferric form of hemoglobin, is continuously formed in normal erythrocytes, but during abnormal situations in situ, the level is enhanced. 8-Amino-quinolines and related compounds are causative agents for methemoglobin formation. Employing oxyhemoglobin, methemoglobin toxicity was about six times ...

journal_title：Ecotoxicology and environmental safety

authors： Srivastava P,Singh S,Jain GK,Puri SK,Pandey VC

更新日期：2000-03-01 00:00:00

abstract：:Comparison was made of the pharmacokinetics of the radioisotope (65)Zinc ((65)Zn) in blood, plasma, and whole body of adult channel catfish (Ictalurus punctatus) following intravascular (iv) administration. A two-compartment model described the pharmacokinetics of (65)Zn in plasma and blood during the first 40 days fo...

journal_title：Ecotoxicology and environmental safety

authors： Barron MG,Schultz IR,Newman MC

更新日期：2000-03-01 00:00:00

abstract：:Nonylphenol is a biodegradation product of nonionic surfactants and has recently attracted considerable attention due to its estrogenic potential. Sexually mature male rainbow trout were repeatedly exposed (one to four periods of 10 days each) to environmentally relevant concentrations of nonylphenol (1 microg/L, 10 m...

journal_title：Ecotoxicology and environmental safety

authors： Burkhardt-Holm P,Wahli T,Meier W

更新日期：2000-05-01 00:00:00

abstract：:The article describes a laboratory experiment to determine the effect of copper oxychloride on the earthworm Eisenia fetida. Copper oxychloride was used because it is the most commonly used fungicide in South African vineyards but not much is known about its toxicity to earthworms. In an experiment lasting 8 weeks, ne...

journal_title：Ecotoxicology and environmental safety

authors： Helling B,Reinecke SA,Reinecke AJ

更新日期：2000-05-01 00:00:00

abstract：:A new biosensor is constructed for the detection of some herbicides based on kinetic measurements of chlorophyll-a fluorescence in Chlorella vulgaris cells. The microalgae are immobilized on removable membranes placed in front of the tip of an optical fiber bundle inside a homemade microcell. C. vulgaris was easily cu...

journal_title：Ecotoxicology and environmental safety

authors： Naessens M,Leclerc JC,Tran-Minh C

更新日期：2000-06-01 00:00:00

abstract：:The present study monitored 10-year-old fish and piscivorous birds from sites contaminated for many years. The data reflected the results of actual, long-term environmental exposures. The results demonstrate that different tissues of fish have quite different concentrations of polychlorinated dibenzo-p-dioxins and dib...

journal_title：Ecotoxicology and environmental safety

authors： Wu WZ,Zhang QH,Schramm KW,Xu Y,Kettrup A

更新日期：2000-07-01 00:00:00

abstract：:Adult yellow perch were stocked into experimental ponds designed to test the biological effects of aquatic reclamation alternatives currently being pursued by the oil sands mining industry. Water-quality characteristics of oil sands-influenced water in the experimental ponds included increased salinity and elevated tr...

journal_title：Ecotoxicology and environmental safety

authors： van den Heuvel MR,Power M,Richards J,MacKinnon M,Dixon DG

更新日期：2000-07-01 00:00:00

abstract：:The effects of NADH and H(2)O(2) on chromate-induced human erythrocyte hemoglobin oxidation and peroxidation were studied. It was observed that NADH decreases the levels of chromate-induced human erythrocyte hemoglobin oxidation and peroxidation. H(2)O(2) decreases the levels of chromate-induced hemoglobin oxidation, ...

journal_title：Ecotoxicology and environmental safety

authors： Fernandes MA,Geraldes CF,Oliveira CR,Alpoim MC

更新日期：2000-09-01 00:00:00

abstract：:Two experiments explored the effects of sequential exposure to multiple concentrations of methylmercury (MeHg) on rat hippocampal slice synaptic transmission and excitability in area CA1. When hippocampal slices were exposed to 0.1, 1, 10, and 100 microM MeHg chloride in successive 30-min exposures, MeHg produced an i...

journal_title：Ecotoxicology and environmental safety

authors： Fountain SB,Rowan JD

更新日期：2000-10-01 00:00:00

abstract：:In a laboratory incubation study, the effect of select heavy metals on methane (CH4) oxidation in two rice soils was investigated under two moisture regimes. Heavy metals differed in their effect on CH4 oxidation in both soils under the two water regimes. Cr significantly inhibited CH4 oxidation in the alluvial soil a...

journal_title：Ecotoxicology and environmental safety

authors： Mohanty SR,Bharati K,Deepa N,Rao VR,Adhya TK

更新日期：2000-11-01 00:00:00

abstract：:Diurnal raptors inhabiting wetland areas where waterfowl shooting is conducted have many opportunities to ingest lead (Pb) shot pellets when feeding on their prey. Exposure to Pb shot was studied in the Spanish imperial eagle (Aquila adalberti), an endangered species with a world population of about 150 breeding pairs...

journal_title：Ecotoxicology and environmental safety

authors： Mateo R,Cadenas R,Máñez M,Guitart R

更新日期：2001-01-01 00:00:00

abstract：:Endocrine-disrupting chemicals (EDCs) are believed to interfere with animal reproduction, but only few biomarkers above the cellular level have been developed to assess the adverse effects of these chemicals. Using the guppy (Poecilia reticulata) as a model organism, studies have been undertaken with the object of com...

journal_title：Ecotoxicology and environmental safety

authors： Toft G,Baatrup E

更新日期：2001-01-01 00:00:00

abstract：:The two surfactants tested, an alcohol ethoxylate (AE) and an alcohol ethoxy sulfate (AES), demonstrate both teratogenic and toxic effects in Xenopus laevis embryos and tadpoles. From acute tests and observations of malformations under light and electron microscopy, the AES produced less teratogenic and toxic effects ...

journal_title：Ecotoxicology and environmental safety

authors： Cardellini P,Ometto L

更新日期：2001-02-01 00:00:00

abstract：:Aspects of the carbohydrate metabolism of Daphnia magna exposed for 48 and 96 h to sublethal concentrations of mercury and lindane were investigated. General as well as toxicant-specific perturbations in the intermediary metabolism were observed. Both model toxicants caused an increase in glycolytic and hexose-monopho...

journal_title：Ecotoxicology and environmental safety

authors： De Coen WM,Janssen CR,Segner H

更新日期：2001-03-01 00:00:00

abstract：:To assess the impacts of two oil spill remediation techniques on fish metabolism, change in aerobic and anaerobic enzyme activities in juvenile Australian Bass, Macquaria novemaculeata, was examined. Changes in cytochrome C oxidase (CCO) and lactate dehydrogenase (LDH) activities were investigated following exposure t...

journal_title：Ecotoxicology and environmental safety

authors： Cohen A,Nugegoda D,Gagnon MM

更新日期：2001-03-01 00:00:00

abstract：:Interest in the ecological effects of composting has been growing recently. However, no established methods are available for testing the toxicity of composted materials. Despite this, international and national quality requirements define that compost shall not contain any environmentally harmful substances. Safety r...

journal_title：Ecotoxicology and environmental safety

authors： Kapanen A,Itävaara M

更新日期：2001-05-01 00:00:00

abstract：:The effects of the molting-hormone agonistic insecticide tebufenozide on larvae of the midge Chironomus riparius Meigen were tested in two different exposure setups. After static contamination of first-instar larvae the NOEC, LOEC, and LC50 values were 13.2, 17.4, and 21.14 microg/L, respectively. Semistatic exposure ...

journal_title：Ecotoxicology and environmental safety

authors： Hahn T,Liess M,Schulz R

更新日期：2001-06-01 00:00:00

abstract：:Inhibition of respiration rate of activated sludge heterotrophic microorganisms was determined for tributyltin (TBT), dibutyltin (DBT), monobutyltin (MBT), and triphenyltin (TPhT). TBT, DBT, and TPhT exhibit similar acute toxicity to activated sludge, while MBT is less toxic. The effect of various experimental paramet...

journal_title：Ecotoxicology and environmental safety

authors： Stasinakis AS,Thomaidis NS,Lekkas TD

更新日期：2001-07-01 00:00:00

abstract：:Eleven aliphatic hydrocarbons, unresolved over resolved ratio (U/R), carbon preference index (CPI), pristane/C17 ratio, and totals were determined in six classes of tissues (heart, liver, intestine, muscle, lung, and kidney) of 10 buzzards (Buteo buteo), 10 barn owls (Tyto alba), and five tawny owls (Strix aluco) from...

journal_title：Ecotoxicology and environmental safety

authors： López y López-Leitón TJ,Alvarez Piñeiro ME,Lage Yusty MA,Simal Lozano J

更新日期：2001-09-01 00:00:00

abstract：:Nonaccidental releases of chemicals into the environment occur ubiquitously as a result of manufacturing activities and consumer use and disposal practices. The potential impact of such releases depends on the inherent chemical properties, the quantities that are discharged, and the manner in which these are partition...

journal_title：Ecotoxicology and environmental safety

authors： Saouter E,Pittinger C,Feijtel T

更新日期：2001-10-01 00:00:00