Archives of Environmental Contamination and Toxicology
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308 records returned
Survival Time Analysis of Least Killifish (Heterandria formosa) and Mosquitofish (Gambusia affinis) in Acute Exposures to Endosulfan Sulfate.
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Single-species flow-through toxicity tests were conducted to determine the times-to-death of two indigenous fish to South Florida-least killifish (Heterandria formosa) and mosquitofish (Gambusia affinis)-from acute exposure to endosulfan sulfate. Mortalities were recorded within 8-h periods from test initiation to termination at 96 h. The 96-h LC(50)s for least killifish and mosquitofish estimated using the trimmed-Spearman-Karber method were 2.0 and 2.3 mug/l, respectively. An accelerated failure time model was used to estimate times to death at selected concentrations. Data were fit to log-normal, log-logistic, and W...
Source: Archives of Environmental Contamination and Toxicology - November 17, 2009 Category: Environmental Health Authors: Carriger JF, Hoang TC, Rand GM Tags: Arch Environ Contam Toxicol Source Type: journals
Heavy Metal Concentrations in Food Chain of Lake Velenjsko jezero, Slovenia: An Artificial Lake from Mining.
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The concentration of metals (Pb, Cd, Zn, Hg) in different ecosystem components (lake water, sediment, plankton, macrophytes, and fish tissues) has been determined in Velenjsko jezero, an artificial lake resulting from mining activity. The risk to humans from consuming fish has been evaluated from the heavy metal load of fish muscle tissue. Heavy metals are transferred through the food chain at different levels, and Hg is found to be the element of the highest ecotoxicological concern. Although both sediment and plankton contain relatively low concentrations of Hg, this element accumulates in high levels in fish, especi...
Source: Archives of Environmental Contamination and Toxicology - November 11, 2009 Category: Environmental Health Authors: Mazej Z, Al Sayegh-Petkovšek S, Pokorny B Tags: Arch Environ Contam Toxicol Source Type: journals
Passerine Exposure to Primarily PCDFs and PCDDs in the River Floodplains Near Midland, Michigan, USA.
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House wren (Troglodytes aedon), tree swallow (Tachycineta bicolor), and eastern bluebird (Sialia sialis) tissues collected in study areas (SAs) downstream of Midland, Michigan (USA) contained concentrations of polychlorinated dibenzofurans (PCDFs) and polychlorinated dibenzo-p-dioxins (PCDDs) greater than in upstream reference areas (RAs) in the region. The sum of concentrations of PCDD/DFs (SigmaPCDD/DFs) in eggs of house wrens and eastern bluebirds from SAs were 4- to 22-fold greater compared to those from RAs, whereas concentrations in tree swallow eggs were similar among areas. Mean concentrations of SigmaPCDD/DFs ...
Source: Archives of Environmental Contamination and Toxicology - November 6, 2009 Category: Environmental Health Authors: Fredricks TB, Zwiernik MJ, Seston RM, Coefield SJ, Plautz SC, Tazelaar DL, Shotwell MS, Bradley PW, Kay DP, Giesy JP Tags: Arch Environ Contam Toxicol Source Type: journals
Toxicity of Metals to the Bivalve Tellina deltoidalis and Relationships Between Metal Bioaccumulation and Metal Partitioning Between Seawater and Marine Sediments.
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The Australian benthic bivalve Tellina deltoidalis tolerates a wide range of sediment and water conditions, is easy to handle in the laboratory, and is a useful species for undertaking whole-sediment toxicity tests. The sensitivity of T. deltoidalis to metals was investigated in 10-day metal-spiked sediment exposures for Cd, Cu, Ni, Pb, and Zn and in water-only exposures for Cu and Zn. The survival of T. deltoidalis in 10-day exposures to metal-spiked sediments was 88-100% for Cd, Ni, Pb, and Zn concentrations of 75, 420, 1,000, and 4,000 mg/kg, respectively. The 4-day LC(50)s for dissolved Cu and Zn were 0.18 and 13 m...
Source: Archives of Environmental Contamination and Toxicology - November 4, 2009 Category: Environmental Health Authors: King CK, Dowse MC, Simpson SL Tags: Arch Environ Contam Toxicol Source Type: journals
Effects of the Veterinary Pharmaceutical Ivermectin on Soil Invertebrates in Laboratory Tests.
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As part of the risk assessment of veterinary pharmaceuticals, the potential impact of these chemicals on soil ecosystems has to be determined according to European law. However, almost no data from standardized laboratory tests are available. Therefore, in the EU FP6 ERAPharm, the effects of the widely used veterinary pharmaceutical ivermectin, an anthelminthic, were studied in chronic laboratory tests performed according to OECD (Organisation for Economic Co-operation and Development) and ISO (International Organization for Standardization) guidelines. In detail, three soil invertebrate species-the earthworm Eisenia f...
Source: Archives of Environmental Contamination and Toxicology - November 1, 2009 Category: Environmental Health Authors: Römbke J, Krogh KA, Moser T, Scheffczyk A, Liebig M Tags: Arch Environ Contam Toxicol Source Type: journals
Erratum to: Biochemical Response of the Copepod Tigriopus japonicus Mori Experimentally Exposed to Cadmium.
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PMID: 19882296 [PubMed - as supplied by publisher] (Source: Archives of Environmental Contamination and Toxicology)
Source: Archives of Environmental Contamination and Toxicology - November 1, 2009 Category: Environmental Health Authors: Wang MH, Wang GZ Tags: Arch Environ Contam Toxicol Source Type: journals
Flow-Cytometric Analyses of Viability Biomarkers in Pesticide-Exposed Sperm of Three Aquatic Invertebrates.
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In this study, we detected sperm viability biomarkers with several fluorescent reporter dyes using flow cytometry in three aquatic invertebrates (Crassostrea virginica, Dreissena polymorpha, and Lytechinus variegatus) after exposure to a pesticide and herbicide. The pesticide, Bayluscide, appeared to affect mitochondrial membrane potential in the sperm of all three species, as measured with MitoTracker Red CMXRos((R)). A decrease in the percentage of sperm stained with SYBR((R))-14 (indicating uncompromised plasma membrane) was observed in C. virginica and D. polymorpha sperm exposed to Bayluscide, but propidium iodide sta...
Source: Archives of Environmental Contamination and Toxicology - October 30, 2009 Category: Environmental Health Authors: Favret KP, Lynn JW Tags: Arch Environ Contam Toxicol Source Type: journals
A Preliminary Assessment of Polycyclic Aromatic Hydrocarbon Distribution in the Kenting Coral Reef Waters of Southern Taiwan.
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This distribution and variation of 45 polycyclic aromatic hydrocarbons (PAHs) in the waters of Kenting coral reefs were investigated by using sensitive research-grade sampling and analytical methods. The concentration levels of total PAHs (including particulate and dissolved PAHs) in the Kenting waters were relatively low, ranging from 2.2 to 34.4 ng/L. There was no significant spatial difference in PAH concentrations among the sampling stations, even between the surface and bottom waters. The fraction of dissolved PAHs on average was greater than that of particulate PAHs due to the small amount of total suspended part...
Source: Archives of Environmental Contamination and Toxicology - October 24, 2009 Category: Environmental Health Authors: Cheng JO, Cheng YM, Chen TH, Hsieh PC, Fang MD, Lee CL, Ko FC Tags: Arch Environ Contam Toxicol Source Type: journals
Permeation of Herbicidal Dichlobenil From a Casoron Formulation Through Nitrile Gloves.
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The aim of this study was to measure permeation of the herbicide dichlobenil in Casoron 4G through disposable and chemically protective nitrile gloves using an American Society for Testing and Materials-type permeation cell and a closed-loop system employing two different solvents (hexane and water) and two different challenge situations (aqueous emulsion and solid formulation). Capillary gas chromatography-mass spectrometry was used for quantification purposes. The chemically protective glove did not allow any permeation up to 8 h for the solid-formulation and water-collection challenges, but permeation was detected i...
Source: Archives of Environmental Contamination and Toxicology - October 24, 2009 Category: Environmental Health Authors: Que Hee SS, Zainal H Tags: Arch Environ Contam Toxicol Source Type: journals
Influences of Sex, Habitat, and Seasonality on Heavy-Metal Concentrations in the Burrowing Crab (Neohelice Granulata) From a Coastal Lagoon in Argentina.
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Cadmium, chromium, copper, and manganese concentrations were determined in hepatopancreas of both sexes as well as in eggs at different embryonic development stages of the burrowing crab Neohelice granulata (Brachyura, Varunidae) from Mar Chiquita Coastal Lagoon, a biosphere reserve from Argentina, during a period of 1 year, to assess the bioaccumulation of metals associated with sex and seasonality. Furthermore, metal levels in associated superficial sediment samples were also determined. Two different "cangrejales," one in a mudflat and another one in a salt marsh, were studied. The results showed high concentrations...
Source: Archives of Environmental Contamination and Toxicology - October 22, 2009 Category: Environmental Health Authors: Beltrame MO, De Marco SG, Marcovecchio JE Tags: Arch Environ Contam Toxicol Source Type: journals
Effect of Parathion-Methyl on Amazonian Fish and Freshwater Invertebrates: A Comparison of Sensitivity with Temperate Data.
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Parathion-methyl is an organophosphorous insecticide that is widely used in agricultural production sites in the Amazon. The use of this pesticide might pose a potential risk for the biodiversity and abundance of fish and invertebrate species inhabiting aquatic ecosystems adjacent to the agricultural fields. Due to a lack of toxicity data for Amazonian species, safe environmental concentrations used to predict the ecological risks of parathion-methyl in the Amazon are based on tests performed with temperate species, although it is unknown whether the sensitivity of temperate species is representative for those of Amazo...
Source: Archives of Environmental Contamination and Toxicology - October 21, 2009 Category: Environmental Health Authors: Rico A, Geber-Corrêa R, Campos PS, Garcia MV, Waichman AV, van den Brink PJ Tags: Arch Environ Contam Toxicol Source Type: journals
Effect of Alteration Zones on Water Quality: A Case Study from Biga Peninsula, Turkey.
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This study focuses on two such springs in Kirazli area (Kirazli and Balaban springs) with a distinct quality pattern. Accordingly, field parameters (temperature, pH, and electrical conductivity), major anion and cation (sodium, potassium, calcium, magnesium, chloride, bicarbonate, and sulfate), heavy metals (aluminum, arsenic, barium, chromium, cobalt, cupper, iron, lithium, manganese, nickel, lead, and zinc), and isotopes (oxygen-18, deuterium, and tritium) were determined in water samples taken from these springs during 2005 through 2007. The chemical analyses showed that aluminum concentrations were found to be two orde...
Source: Archives of Environmental Contamination and Toxicology - October 19, 2009 Category: Environmental Health Authors: Baba A, Gunduz O Tags: Arch Environ Contam Toxicol Source Type: journals
Changes in Growth, Biochemical Components, and Antioxidant Activity in Aquatic Plant Wolffia arrhiza (Lemnaceae) Exposed to Cadmium and Lead.
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The present study investigated the biochemical response of aquatic plant Wolffia arrhiza (Lemnaceae) treated with lead (Pb) and cadmium (Cd) at a range of concentrations from 1 to 1000 muM. W. arrhiza has been identified as good scavenger of heavy metals from aqueous solution. Pb and Cd accumulation was found to be increased in a concentration- and duration-dependent manner. However, the highest biosorption of heavy metals was found in plants exposed to low levels (10 muM) of Cd and Pb in the nutrient medium. In observing the response to heavy-metal stress, we noted inhibited plant growth and decreased photosynthetic p...
Source: Archives of Environmental Contamination and Toxicology - October 15, 2009 Category: Environmental Health Authors: Piotrowska A, Bajguz A, Godlewska-Żyłkiewicz B, Zambrzycka E Tags: Arch Environ Contam Toxicol Source Type: journals
Investigation of the Acute Toxic Effect of Chlorpyrifos on Pseudomonas putida in a Sterilized Soil Environment Monitored by Microcalorimetry.
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Chlorpyrifos (CPF) is moderately persistent in soils. In our study, microcalorimetry was introduced for the first time to explore the acute toxic effect of CPF on a Pseudomonas strain in sterilized soil. Firstly, it was determined by microcalorimetry that P. putida failed to degrade CPF. Then the acute toxicity of increasing concentrations of CPF to P. putida was determined by its temporal effects on metabolism and counts of colony forming units. Results revealed that the increase of CPF concentration could induce a decrease of the growth rate constant (k) and the total thermal effect (Q (T)), representing an inhibitin...
Source: Archives of Environmental Contamination and Toxicology - October 13, 2009 Category: Environmental Health Authors: Chen H, Yao J, Wang F, Zhou Y, Chen K, Zhuang R, Zaray G Tags: Arch Environ Contam Toxicol Source Type: journals
Anticoagulant Rodenticides in Three Owl Species from Western Canada, 1988-2003.
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Anticoagulant rodenticides are widely used to control rodent infestations. Previous studies have shown that nontarget organisms, such as birds, are at risk for both primary and secondary poisoning. This paper presents rodenticide residue information on the livers from 164 strigiformes which included barn owls (Tyto alba), barred owls (Strix varia), and great horned owls (Bubo virginianus), collected from 1988 to 2003 in the province of British Columbia and the Yukon Territory, Canada. Livers were analyzed for brodifacoum, bromadiolone, chlorophacinone, diphacinone, difethialone, and warfarin. Our results show that, of ...
Source: Archives of Environmental Contamination and Toxicology - October 13, 2009 Category: Environmental Health Authors: Albert CA, Wilson LK, Mineau P, Trudeau S, Elliott JE Tags: Arch Environ Contam Toxicol Source Type: journals
Toxic Effect and Biochemical Study of Chlorfluazuron, Oxymatrine, and Spinosad on Honey Bees (Apis mellifera).
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Under laboratory conditions, the comparative effects of two insect growth regulators, chlorfluazuron and oxymatrine, and spinosad as a biopesticide were examined on honey bee workers (Apis mellifera L.). Separate groups of bees were left for 24 h to feed on 50% sucrose solution containing different concentrations of the tested insecticides, and the lethal concentration that caused 50% mortality (LC(50)) was estimated. The inhibitory effects on acetylcholinesterase (AChE) and adenosine triphosphatase (ATPase) activities as biochemical indicators were determined in vivo after 24 h in head, thorax, and abdomen of survivin...
Source: Archives of Environmental Contamination and Toxicology - October 7, 2009 Category: Environmental Health Authors: Rabea EI, Nasr HM, Badawy ME Tags: Arch Environ Contam Toxicol Source Type: journals
Development of a Sample Preparation Method for the Analysis of Current-Use Pesticides in Sediment Using Gas Chromatography.
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This article describes the analytical method development for seven additional pesticides that are being examined to determine if they might play a role in the unexplained toxicity. A pressurized liquid extraction method was optimized to simultaneously extract diazinon, methyl parathion, oxyfluorfen, dicofol, fenpropathrin, pyraclostrobin, and indoxacarb from sediment, and the extracts were cleaned using a two-step solid-phase extraction procedure. The final extract was analyzed for the target pesticides by gas chromatography/nitrogen-phosphorus detector (GC/NPD), and gas chromatography/electron capture detector (GC/ECD), a...
Source: Archives of Environmental Contamination and Toxicology - October 1, 2009 Category: Environmental Health Authors: Wang D, Weston DP, Ding Y, Lydy MJ Tags: Arch Environ Contam Toxicol Source Type: journals
Validation and Application of a Method for the Determination of Total Chromium in Rat Tissues by Inductively Coupled Plasma Mass Spectrometry.
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The validation of a method for the determination of chromium (Cr) in F-344/N rat tissues by inductively coupled plasma-mass spectrometry is described. Samples were analyzed after a rapid, open-vessel microwave digestion procedure. Performance of the method was evaluated using kidney tissue across a concentration range of 0.50-5.00 mug Cr/g tissue. Data for method linearity, accuracy, precision, digest stability, and storage stability are presented along with limits of detection and quantitation data. Data from a method cross-validation for B6C3F1 mouse kidney tissue are also presented. After validation, the method was ...
Source: Archives of Environmental Contamination and Toxicology - October 1, 2009 Category: Environmental Health Authors: Levine KE, Stout MD, Ross GT, Essader AS, Weber FX, Grohse PM, Fernando RA, Milstein LS, Hooth MJ, Collins BJ Tags: Arch Environ Contam Toxicol Source Type: journals
Effects of Nutrient Pre-Exposure on Atrazine Toxicity to Vallisneria americana Michx. (Wild Celery).
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Accelerated eutrophication is common to many freshwater and marine environments and often co-occurs with the presence of anthropogenic chemicals. However, the toxic effects of common chemical stressors such as herbicides in the presence of elevated nutrients are not well understood for most aquatic flora, particularly vascular species. To provide insight, field-collected Vallisneria americana Michx. (wild celery) were sequentially exposed to three nutrient concentrations for 3 months and then to nominal 11 and 110 mug L(-1) atrazine for 96 h. Nutrient concentrations (combined NH(4) (+), NO(2) (-), NO(3) (-), PO(4) (-))...
Source: Archives of Environmental Contamination and Toxicology - September 30, 2009 Category: Environmental Health Authors: Dantin DD, Boustany RG, Lewis MA, Jordan SJ, Moss RF, Michot TC Tags: Arch Environ Contam Toxicol Source Type: journals
Modulatory Effects of Deltamethrin on Antioxidant Defense Mechanisms and Lipid Peroxidation in Carassius auratus gibelio Liver and Intestine.
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Pyrethroids, such as deltamethrin, are toxic substances that lead to generation of reactive oxygen species, which harm living organisms. We assessed the level and patterns of imbalance evolved by a single dose of 2 mug/L deltamethrin on the lipid peroxidation (LPO) and the antioxidant defense system of Carassius auratus gibelio liver and intestine, and monitored the recovery dynamics of these parameters during a 14-day post-exposure period. LPO and antioxidative defense mechanisms displayed different responses in the investigated tissues. Sudden increase of LPO in the liver, persisting at this elevated level throughout...
Source: Archives of Environmental Contamination and Toxicology - September 29, 2009 Category: Environmental Health Authors: Dinu D, Marinescu D, Munteanu MC, Staicu AC, Costache M, Dinischiotu A Tags: Arch Environ Contam Toxicol Source Type: journals
Concentrations and Accumulation Features of Organochlorine Pesticides in the Baiyangdian Lake Freshwater Food Web of North China.
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Organochlorine pesticides (OCPs), such as hexachlorocyclohexane (HCH) and dichlorodiphenyltrichloroethane (DDT), are ubiquitous anthropogenic environmental contaminants. They are persistent, broad-spectrum toxicants that accumulate in the food web with potential risks to the ecosystem and human health. HCHs were the predominant contaminants in Baiyangdian Lake, North China. Concentrations of HCHs and DDTs ranged from 58 to 563 ng/g lipid weight (lw) and 21 to 401 ng/g lw, respectively, for aquatic biota samples. The highest levels of HCHs and DDTs were observed in muscles of yellow catfish. The mean concentrations of O...
Source: Archives of Environmental Contamination and Toxicology - September 29, 2009 Category: Environmental Health Authors: Hu G, Dai J, Mai B, Luo X, Cao H, Wang J, Li F, Xu M Tags: Arch Environ Contam Toxicol Source Type: journals
Tissue Distribution of Polychlorinated Biphenyls and Organochlorine Pesticides and Potential Toxicity to Alaskan Northern Fur Seals Assessed Using PCBs Congener Specific Mode of Action Schemes.
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The fur seal (Callorhinus ursinus) population has decreased in their primary breeding grounds in the Bering Sea; contamination is among suspected causes. Our goal was to better understand the extent of contamination of seal tissues with certain organochlorine compounds by measuring the concentrations of polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) in fur seal tissues from St. Paul Island, to gain a better perspective of tissue congener distribution and to evaluate the observed PCB levels against toxicologically significant levels for modes of action. Concentrations of 145 PCB congeners ( summat...
Source: Archives of Environmental Contamination and Toxicology - September 29, 2009 Category: Environmental Health Authors: Wang D, Shelver WL, Atkinson S, Mellish JA, Li QX Tags: Arch Environ Contam Toxicol Source Type: journals
Modelling the Long-Term Fate of Mercury in a Lowland Tidal River. II. Calibration and Comparison of Two Models with Field Data.
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This study presents results of the application of two-one-dimensional/dynamic-deterministic models developed to evaluate and predict mercury contamination of a lowland river, the River Yare, Norfolk, UK. As a general indication of model performance, MODEL 1 produced a prediction of the overall mass balance of mercury in the River Yare that was 6% lower than an estimate, based on measurements, and 10% lower than the prediction provided by MODEL 2. The mercury surficial sediment concentrations calculated by MODEL 1 varied from 0.46 mg kg(-1) in 1995 (Reach 3) to 3.55 mg kg(-1) in 1986 (Reaches 6 and 7), whereas the minimum m...
Source: Archives of Environmental Contamination and Toxicology - September 26, 2009 Category: Environmental Health Authors: Braga MC, Birkett JW, Shaw G, Lester JN Tags: Arch Environ Contam Toxicol Source Type: journals
Modelling the Long-Term Fate of Mercury in a Lowland Tidal River. I. Description of Two Finite Segment Models.
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This study presents two different approaches to the development of one-dimensional/dynamic-deterministic models for the evaluation and prediction of mercury contamination in a lowland tidal river, the River Yare (Norfolk, UK). The models described here were developed to encompass the entire river system and address the mass balance of mercury in a multicompartment system, including tidal reversal and saline limit. The models were focused on river systems, with the River Yare being used as a case study because previous modelling studies have been centred on lakes and wetlands whilst there is a paucity of information for riv...
Source: Archives of Environmental Contamination and Toxicology - September 26, 2009 Category: Environmental Health Authors: Braga MC, Birkett JW, Lester JN, Shaw G Tags: Arch Environ Contam Toxicol Source Type: journals
An Ecological Risk Assessment of the Acute and Chronic Effects of the Herbicide Clopyralid to Rainbow Trout (Oncorhynchus mykiss).
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Clopyralid (3,6-dichloro-2-pyridinecarboxylic acid) is a pyridine herbicide frequently used to control invasive, noxious weeds in the northwestern United States. Clopyralid exhibits low acute toxicity to fish, including the rainbow trout (Oncorhynchus mykiss) and the threatened bull trout (Salvelinus confluentus). However, there are no published chronic toxicity data for clopyralid and fish that can be used in ecological risk assessments. We conducted 30-day chronic toxicity studies with juvenile rainbow trout exposed to the acid form of clopyralid. The 30-day maximum acceptable toxicant concentration (MATC) for growth...
Source: Archives of Environmental Contamination and Toxicology - September 23, 2009 Category: Environmental Health Authors: Fairchild JF, Allert AL, Feltz KP, Nelson KJ, Valle JA Tags: Arch Environ Contam Toxicol Source Type: journals
Polycyclic Aromatic Hydrocarbon Contamination of Recent Sediments and Marine Organisms from Xiamen Bay, China.
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Surface marine sediments from 12 sites within Xiamen Bay (XMB) and marine organisms (clam, crab, and fish) from a heavily polycyclic aromatic hydrocarbon (PAH)-contaminated site at Yuandang Lagoon were sampled and analyzed for 16 priority PAH content by gas chromatography/mass spectrometry. The total PAH concentrations in sediments ranged from 203.7 to 1590.5 ng/g, with an average value of 670.0 ng/g. Overall, the total PAH concentrations were relatively lower in the east coastal zone and significantly higher in Yuandang Lagoon. These concentrations were intermediate in comparison with those observed in other estuaries...
Source: Archives of Environmental Contamination and Toxicology - September 22, 2009 Category: Environmental Health Authors: Li Q, Zhang X, Yan C Tags: Arch Environ Contam Toxicol Source Type: journals
Assessment of Antifouling Biocides Contaminations in Maizuru Bay, Japan.
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The concentrations of organotin compounds in the aquatic environment of Maizuru Bay and their spatial distribution are discussed. The concentrations of tributyltin (TBT) compounds in water samples ranged from 0.001 to 0.002 mug l(-1), and monobutyltin compounds were the dominant species among the butyltin compounds. TBT concentrations in Maizuru Bay are low compared with other coastal waters of Japan. Drastic differences in TBT concentrations were not observed among the Maizuru Bay sites. Phenyltin compounds were not detected in the water samples. Concentrations of TBT and triphenyltin (TPT) in sediment from Maizuru Ba...
Source: Archives of Environmental Contamination and Toxicology - September 21, 2009 Category: Environmental Health Authors: Eguchi S, Harino H, Yamamoto Y Tags: Arch Environ Contam Toxicol Source Type: journals
Polybrominated Diphenyl Ethers in Outmigrant Juvenile Chinook Salmon from the Lower Columbia River and Estuary and Puget Sound, Washington.
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Previous studies have examined the presence, distribution, and concentrations of toxic contaminants in two major waterways in the Pacific Northwest: the lower Columbia River and Estuary (LCR&E) and Puget Sound, Washington. However, those studies have not reported on the levels of polybrominated diphenyl ethers (PBDEs) in juvenile Chinook salmon (Onchorynchus tshawytscha). Populations of Chinook salmon from the LCR&E and Puget Sound are declining, and some stocks are currently listed as "threatened" under the Endangered Species Act. Bioaccumulation of contaminants, including PBDEs, by juvenile Chinook salmon in ...
Source: Archives of Environmental Contamination and Toxicology - September 21, 2009 Category: Environmental Health Authors: Sloan CA, Anulacion BF, Bolton JL, Boyd D, Olson OP, Sol SY, Ylitalo GM, Johnson LL Tags: Arch Environ Contam Toxicol Source Type: journals
Larval Responses of Three Midwestern Anurans to Chronic, Low-Dose Exposures of Four Herbicides.
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Low levels of agricultural herbicides often contaminate surface water and might persist throughout the growing season, potentially acting as stressors on aquatic organisms. Although low-dose, chronic exposures to agrochemicals are likely common for many nontarget organisms, studies addressing these effects using end-use herbicide formulations are rare. We exposed three common species of tadpoles to conservative levels of atrazine, S-metolachlor, and glyphosate end-use herbicide formulations throughout the larval period to test for survival differences or life-history trait alterations. Exposure to the glyphosate produc...
Source: Archives of Environmental Contamination and Toxicology - September 18, 2009 Category: Environmental Health Authors: Williams BK, Semlitsch RD Tags: Arch Environ Contam Toxicol Source Type: journals
Trace Element Concentrations (Mercury, Cadmium, Copper, Zinc, Lead, Aluminium, Nickel, Arsenic, and Selenium) in Some Aquatic Birds of the Southwest Atlantic Coast of France.
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Trace elements (mercury [Hg], cadmium [Cd], copper [Cu], zinc [Zn], lead [Pb], aluminium [Al], nickel [Ni], arsenic [As], and selenium [Se]) were investigated using inductively coupled plasma-mass spectrometry in liver, kidney, muscle, and feather of aquatic birds wintering or inhabiting the wetlands situated on the Southwest Atlantic coast of France. A majority of greylag geese, red knots, and grey plovers were collected from among hunter-shot animals. The relation between residue concentrations, age (juvenile vs. adult), and sex was investigated. Trace elements were lower than threshold levels of toxicity, except for...
Source: Archives of Environmental Contamination and Toxicology - September 17, 2009 Category: Environmental Health Authors: Lucia M, André JM, Gontier K, Diot N, Veiga J, Davail S Tags: Arch Environ Contam Toxicol Source Type: journals
Comparison of Polycyclic Aromatic Hydrocarbons Levels in Sludges from Municipal and Industrial Wastewater Treatment Plants.
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This study was carried out to investigate the concentrations and potential sources of the polycyclic aromatic hydrocarbons (PAHs) in sludge of 14 wastewater treatment plants (WWTPs). Sludge samples were collected from 2 municipal WWTPs, 11 industrial WWTPs, and 1 sanitary landfill leachate treatment plant within the city of Bursa, Turkey during the summer of 2008. Ultrasonication was applied for extraction and gas chromatography-mass spectrometry was used to analyze the PAH contents of the samples. Twelve of the 16 EPA-listed PAH compounds were determined. Total PAH concentrations ( summation operator(12) PAHs) determined ...
Source: Archives of Environmental Contamination and Toxicology - September 17, 2009 Category: Environmental Health Authors: Salihoglu NK, Salihoglu G, Tasdemir Y, Cindoruk SS, Yolsal D, Ogulmus R, Karaca G Tags: Arch Environ Contam Toxicol Source Type: journals
Occurrence of Organic Wastewater and Other Contaminants in Cave Streams in Northeastern Oklahoma and Northwestern Arkansas.
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In this study, polar organic chemical integrative samplers (POCISs) and semipermeable membrane devices (SPMDs) were deployed in six caves and two surface-water sites located within the Ozark Plateau of northeastern Oklahoma and northwestern Arkansas in order to detect potential chemical contaminants in these systems. All caves sampled were known to contain populations of the threatened Ozark cavefish (Amblyopsis rosae). The surface-water site in Oklahoma was downstream from the outfall of a municipal wastewater treatment plant and a previous study indicated a hydrologic link between this stream and one of the caves. A tota...
Source: Archives of Environmental Contamination and Toxicology - September 17, 2009 Category: Environmental Health Authors: Bidwell JR, Becker C, Hensley S, Stark R, Meyer MT Tags: Arch Environ Contam Toxicol Source Type: journals
Effects of Dietary Selenomethionine on Cutthroat Trout (Oncorhynchus clarki bouvieri) Growth and Reproductive Performance Over a Life Cycle.
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A 2.5-year feeding trial was conducted in which cutthroat trout (Oncorhynchus clarki bouvieri) were fed either a basal diet (1.2 mug Se/g diet) or the basal diet supplemented with 2, 4, 6, 8, or 10 mug selenomethionine/g diet from 1 g weight to maturation. After 44 weeks of feeding, a subsample of fish was removed from dietary treatment groups and fed the basal diet for an additional 32 weeks. Concentrations of Se in whole fish and eggs increased in proportion to dietary Se intake, but no differences in growth, feed intake, survival, or egg hatchability were observed among dietary groups. Cranial-facial deformities in ...
Source: Archives of Environmental Contamination and Toxicology - September 16, 2009 Category: Environmental Health Authors: Hardy RW, Oram LL, Möller G Tags: Arch Environ Contam Toxicol Source Type: journals
Impact of the Use of Fluvalinate on Different Types of Beeswax from Spanish Hives.
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This study indicates that the analysis of these compounds in beeswax samples could be used as bioindicators of fluvalinate sanitary treatment and handling practices applied by beekeepers.
PMID: 19756841 [PubMed - as supplied by publisher] (Source: Archives of Environmental Contamination and Toxicology)
Source: Archives of Environmental Contamination and Toxicology - September 15, 2009 Category: Environmental Health Authors: Adamczyk S, Lázaro R, Pérez-Arquillué C, Bayarri S, Herrera A Tags: Arch Environ Contam Toxicol Source Type: journals
Effects of a Chemically Polluted Discharge on the Relationship Between Fecundity and Parasitic Infections in the Chub (Leuciscus cephalus) from a River in Southern England.
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In fish there is a close association between endocrine and immune function that during seasonal changes in reproductive status can affect the fishes susceptibility to parasitic infection. The effects of endocrine-disrupting pollution on this association are not known. The present study investigates the effects of a chemically polluted (ammoniacal nitrogen, zinc, bromide) discharge in Cranleigh Waters, a river in southern England, on the fecundity and parasitism of chub, Leuciscus cephalus, over an 18-month period. In the polluted site, the gonado-somatic index (GSI) of fish was lower in females and higher in males comp...
Source: Archives of Environmental Contamination and Toxicology - September 15, 2009 Category: Environmental Health Authors: Morley NJ, Costa HH, Lewis JW Tags: Arch Environ Contam Toxicol Source Type: journals
Vitamin C and Resveratrol Supplementation to Rat Dams Treated with Di(2-ethylhexyl)phthalate: Impact on Reproductive and Oxidative Stress End Points in Male Offspring.
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This study was carried out to assess the influence of di(2-ethylhexyl)phthalate (DEHP) alone or associated with antioxidants on the male reproductive system in newborn rats, emphasizing the implications of oxidative stress and hormonal balance during prenatal and early postnatal periods. Wistar females were exposed by oral route to DEHP alone or associated with antioxidants from gestational day 7 to lactational day 2 according to the following treatment regimens: (C) vehicle control (canola oil + 1% Tween-80); (V) vitamin C (200 mg/kg) + canola oil; (R) resveratrol (10 mg/kg) + canola oil; (D) DEHP (500 mg/kg) + 1% Tween-8...
Source: Archives of Environmental Contamination and Toxicology - September 15, 2009 Category: Environmental Health Authors: Botelho GG, Bufalo AC, Boareto AC, Muller JC, Morais RN, Martino-Andrade AJ, Lemos KR, Dalsenter PR Tags: Arch Environ Contam Toxicol Source Type: journals
Effects of Elevated Nitrate Concentration on Mortality, Growth, and Egestion Rates of Gammarus pseudolimnaeus Amphipods.
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There is relatively little known about nitrate toxicity in aquatic invertebrates, especially sublethal effects of elevated nitrate. We exposed the amphipod Gammarus pseudolimnaeus to elevated nitrate concentrations (up to 128 mg NO(3)-N/L) in a laboratory experiment and measured mortality, growth rates, egestion rates, molting, and C:N ratio. Nitrate concentration did not affect mortality, egestion rate, molting, and C:N ratio. Amphipod growth decreased slightly with increasing nitrate concentration based on the results of a linear regression, but a one-way ANOVA suggested that mean growth rates were not different amon...
Source: Archives of Environmental Contamination and Toxicology - September 15, 2009 Category: Environmental Health Authors: Stelzer RS, Joachim BL Tags: Arch Environ Contam Toxicol Source Type: journals
Mass Loadings of Triclosan and Triclocarbon from Four Wastewater Treatment Plants to Three Rivers and Landfill in Savannah, Georgia, USA.
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Triclosan (TCS) and triclocarbon (TCC) are bactericides used in various consumer and personal-care products. Recent studies have revealed considerable levels of these bactericides in wastewater, aquatic wildlife, and human samples. Consequently, in this study we measured TCS and TCC in influent and effluent, sludge, and pond water/sediment samples from four wastewater treatment plants (WWTPs) and three major rivers in Savannah, Georgia (USA). Among these treatment plants, the Wilshire plant showed elevated concentrations of TCS (influent, 86,161; effluent, 5370 ng/L), whereas TCC was greater in the Georgetown plant (in...
Source: Archives of Environmental Contamination and Toxicology - September 15, 2009 Category: Environmental Health Authors: Kumar KS, Priya SM, Peck AM, Sajwan KS Tags: Arch Environ Contam Toxicol Source Type: journals
Phosphate-Solubilizing and Plant-Growth-Promoting Pseudomonas aeruginosa PS1 Improves Greengram Performance in Quizalafop-p-ethyl and Clodinafop Amended Soil.
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The quizalafop-p-ethyl- and clodinafop-tolerant phosphate-solubilizing and plant-growth-promoting Pseudomonas aeruginosa PS1 isolated from the rhizospheric soils of mustard was used to determine its phosphate-solubilizing activity and other plant-growth-promoting traits both in the presence and absence of technical grade quizalafop-p-ethyl and clodinafop under in vitro conditions. Quizalafop-p-ethyl (at 40, 80, and 120 ppb) and clodinafop (at 400, 800, and 1200 ppb) reduced the P-solubilizing activity, synthesis of indole-3-acetic acid, and siderophores progressively with increasing concentrations of each herbicide. Hy...
Source: Archives of Environmental Contamination and Toxicology - September 15, 2009 Category: Environmental Health Authors: Ahemad M, Khan MS Tags: Arch Environ Contam Toxicol Source Type: journals
Bioaccumulation and Biomagnification of Organochlorines in a Marine Food Web at a Pristine Site in Iceland.
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Organochlorine (OC) bioaccumulation and biomagnification were studied in a marine food web at a pristine site in Iceland. The species studied were the gastropod and grazer chink shell (Lacuna vincta), the filter feeding bivalve blue mussel (Mytilus edulis), the predators butterfish (Pholis gunnellus), and the seabird black guillemot (Cepphus grylle), all sampled and analysed in 1996-1997. Individual OC levels were generally low in chink shell and blue mussels, somewhat elevated in the fish, and an order of a magnitude higher in the top predator black guillemot, except for SigmaHCH (hexachlorocyclohexane isomers) and Si...
Source: Archives of Environmental Contamination and Toxicology - August 26, 2009 Category: Environmental Health Authors: Skarphedinsdottir H, Gunnarsson K, Gudmundsson GA, Nfon E Tags: Arch Environ Contam Toxicol Source Type: journals
Oxidative Stress Biomarkers in the Digestive Gland of Theba pisana Exposed to Heavy Metals.
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This study suggests that upregulation of the antioxidant enzyme activities, elevation of LPO, and the reduction in GSH content is related to oxidative stress in this species that could be useful as biomarkers for the evaluation of contaminated terrestrial ecosystems.
PMID: 19705050 [PubMed - as supplied by publisher] (Source: Archives of Environmental Contamination and Toxicology)
Source: Archives of Environmental Contamination and Toxicology - August 24, 2009 Category: Environmental Health Authors: Radwan MA, El-Gendy KS, Gad AF Tags: Arch Environ Contam Toxicol Source Type: journals
Levels of Perfluorinated Chemicals in Municipal Drinking Water from Catalonia, Spain: Public Health Implications.
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In this study, the concentrations of 13 perfluorinated compounds (PFCs) (PFBuS, PFHxS, PFOS, THPFOS, PFHxA, PFHpA, PFOA, PFNA, PFDA, PFUnDA, PFDoDA, PFTDA, and PFOSA) were analyzed in municipal drinking water samples collected at 40 different locations from 5 different zones of Catalonia, Spain. Detection limits ranged between 0.02 (PFHxS) and 0.85 ng/L (PFOA). The most frequent compounds were PFOS and PFHxS, which were detected in 35 and 31 samples, with maximum concentrations of 58.1 and 5.30 ng/L, respectively. PFBuS, PFHxA, and PFOA were also frequently detected (29, 27, and 26 samples, respectively), with maximum leve...
Source: Archives of Environmental Contamination and Toxicology - August 14, 2009 Category: Environmental Health Authors: Ericson I, Domingo JL, Nadal M, Bigas E, Llebaria X, van Bavel B, Lindström G Tags: Arch Environ Contam Toxicol Source Type: journals
Toxicity of Sediment Cores Collected from the Ashtabula River in Northeastern Ohio, USA, to the Amphipod Hyalella azteca.
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PMID: 19685095 [PubMed - as supplied by publisher] (Source: Archives of Environmental Contamination and Toxicology)
Source: Archives of Environmental Contamination and Toxicology - August 13, 2009 Category: Environmental Health Authors: Ingersoll CG, Kemble NE, Kunz JL, Brumbaugh WG, Macdonald DD, Smorong D Tags: Arch Environ Contam Toxicol Source Type: journals
Lethal and Sublethal Effects of Embryonic and Larval Exposure of Hyla versicolor to Stormwater Pond Sediments.
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Stormwater ponds are common features of modern stormwater management practices. Stormwater ponds often retain standing water for extended periods of time, develop vegetative characteristics similar to natural wetlands, and attract wildlife. However, because stormwater ponds are designed to capture pollutants, wildlife that utilize ponds might be exposed to pollutants and suffer toxicological effects. To investigate the toxicity of stormwater pond sediments to Hyla versicolor, an anuran commonly found using retention ponds for breeding, we exposed embryos and larvae to sediments in laboratory microcosms. Exposure to pon...
Source: Archives of Environmental Contamination and Toxicology - August 13, 2009 Category: Environmental Health Authors: Brand AB, Snodgrass JW, Gallagher MT, Casey RE, Van Meter R Tags: Arch Environ Contam Toxicol Source Type: journals
Occurrence of Antifouling Biocides and Fluorinated Alkyl Compounds in Sediment Core from Deep Sea: Suruga Bay, Tosa Bay, and Nankai Tough, Japan.
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Contamination profiles of antifouling biocides were investigated in a deep-sea environment in Suruga Bay Japan. Significant differences in the tributyltin (TBT) and triphenyltin (TPT) concentrations in subsurface sediment between 850 and 800 m of water depth were not observed (p < 0.05). Organotin (OT) concentrations in sediment core of 0-30.5 cm from a water depth of 800 m were investigated. The butyltins (BTs) and phenyltins (PTs) concentrations were constant between 0 and 15 cm, and, subsequently, the concentration of these compounds increased. The peaks of the BTs and PTs concentrations were observed between 18 ...
Source: Archives of Environmental Contamination and Toxicology - August 12, 2009 Category: Environmental Health Authors: Harino H, Iwasaki N, Arai T, Ohji M, Miyazaki N Tags: Arch Environ Contam Toxicol Source Type: journals
Chlorinated Polycyclic Aromatic Hydrocarbons in Sediments from Industrial Areas in Japan and the United States.
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In this study, residual concentrations and profiles of 20 individual ClPAHs and 16 US EPA-priority PAHs were determined using high- resolution gas chromatography-high-resolution mass spectrometry in sediments from water bodies near industrialized areas: Tokyo Bay, Japan; the Saginaw River watershed, Michigan, USA; a former chlor-alkali plant, Georgia, USA; and the New Bedford Harbor Superfund site, Massachusetts, USA. A sediment core from Tokyo Bay showed temporal patterns in the distribution of ClPAHs from the 1950s through 2004. The fluxes of ClPAHs and 16 priority PAHs in Tokyo Bay sediment core were 0.029-0.57 ng/cm(2)...
Source: Archives of Environmental Contamination and Toxicology - August 11, 2009 Category: Environmental Health Authors: Horii Y, Ohura T, Yamashita N, Kannan K Tags: Arch Environ Contam Toxicol Source Type: journals
Changes in Sperm Characteristics and Induction of Oxidative Stress in the Testis and Epididymis of Experimental Rats by a Herbicide, Atrazine.
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To study the effects of atrazine on reproductive functions and testicular and epididymal antioxidant defense, rats were exposed to 0, 120, or 200 mg/kg body weight atrazine orally for 7 and 16 days. Animals exposed to the high-dose atrazine had their body weights, feed intake, and reproductive organs weights significantly reduced, whereas testicular weights remain unaffected independent of the dose used. In comparison to control, glutathione (GSH) and glutathione-S-transferase (GST) activities were elevated in the high-dose group, whereas the activity of superoxide dismutase (SOD), catalase (CAT); ascorbate (AA), and m...
Source: Archives of Environmental Contamination and Toxicology - August 11, 2009 Category: Environmental Health Authors: Abarikwu SO, Adesiyan AC, Oyeloja TO, Oyeyemi MO, Farombi EO Tags: Arch Environ Contam Toxicol Source Type: journals
In Vitro Cyclooxygenase Inhibition Assay for Evaluating Ecotoxicity of the Surface Water and Domestic Wastewater in the Tone Canal, Japan.
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Cyclooxygenase (COX) plays an important role in eicosanoid metabolism. Nonsteroidal anti-inflammatory drugs (NSAIDs) function as COX inhibitors and are frequently detected in the aquatic environment. Here, we measured the in vitro COX-inhibiting activity of the surface water and domestic wastewater in the Tone Canal, Japan. The concentrations of several NSAIDs in the some samples were also determined using gas chromatography-tandem mass spectrometry for confirming the validity of the assay. The target compounds were extracted from the samples using a solid-phase extraction cartridge. A dose-response relationship betwee...
Source: Archives of Environmental Contamination and Toxicology - August 6, 2009 Category: Environmental Health Authors: Nishi I, Komuro T, Kawakami T, Onodera S Tags: Arch Environ Contam Toxicol Source Type: journals
CYP1A Expression in Caged Rainbow Trout Discriminates Among Sites with Various Degrees of Polychlorinated Biphenyl Contamination.
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It has become increasingly apparent that resident fish can develop resistance to chemicals in their environment, thus compromising their usefulness as sentinels of site-specific pollution. By using a stream system whose resident fish appear to have developed pollutant resistance (Brammell et al., Mar Environ Res 58:251-255, 2005), we tested the hypothesis that the pollutant-inducible biomarker, cytochrome P4501A (CYP1A), as measured in field-caged juvenile rainbow trout (Oncorhynchus mykiss), would reflect relative pollution differences between reference and polychlorinated biphenyl (PCB)-contaminated sites. Trout were...
Source: Archives of Environmental Contamination and Toxicology - August 6, 2009 Category: Environmental Health Authors: Brammell BF, McClain JS, Oris JT, Price DJ, Birge WJ, Elskus AA Tags: Arch Environ Contam Toxicol Source Type: journals
Selenium Accumulation in Sea Ducks Wintering at Lake Ontario.
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In this study, we evaluated interspecific differences and temporal trends in hepatic Se concentrations among BUFF (n = 77), COGO (n = 77), and LTDU (n = 79) wintering at Lake Ontario. All three species accumulated Se throughout winter, but COGO did so at a higher rate than did BUFF and LTDU. Overall, Se concentrations were higher in LTDU [[Formula: see text]; 95% CI = 20.8-24.8 mug/g dry weight (dw)] than in BUFF ([Formula: see text]; 95% CI = 11.6-13.1 mug/g dw) and COGO ([Formula: see text]; 95% CI = 10.7-3.5 mug/g dw) throughout the winter. Se concentrations were deemed elevated (>33 mug/g dw) in 0%, 5%, and 19% of B...
Source: Archives of Environmental Contamination and Toxicology - August 3, 2009 Category: Environmental Health Authors: Schummer ML, Badzinski SS, Petrie SA, Chen YW, Belzile N Tags: Arch Environ Contam Toxicol Source Type: journals
