Abstract:
:The distribution kinetics of methylmercury (CH3Hg[II]) was determined in sheepshead minnows (Cyprinodon variegatus) after a single dose of different CH3Hg(II)-spiked food to determine what factors influence the bioavailability, uptake, and redistribution of CH3Hg(II) to various organs of C. variegatus. The kinetics of CH3Hg(II) distribution was measured in the different organs during a period of 0.1 to 35 d after dosage. The CH3Hg(II) distribution kinetics in the different tissues was modeled using a simple multicompartmental pharmacokinetic model, which assumed that blood was the conduit linking the CH3Hg(II) exchange between the different organs. The CH3Hg(II) was taken up into the intestinal tissue within hours after feeding, followed by a slow release to the blood and the other organs of the body. Exchange between the blood and the visceral organs was relatively slow, with maximum CH3Hg(II) uptake in the liver and gill occurring at 1.5 d following dietary exposure. Subsequently, the majority of the CH3Hg(II) was channeled from the viscera to the rest of the body with a substantial lag time after feeding. However, the rate of transfer between tissues in the studies reported here were faster than those measured by others for larger fish.
journal_name
Environ Toxicol Chemjournal_title
Environmental toxicology and chemistryauthors
Leaner JJ,Mason RPdoi
10.1897/03-258subject
Has Abstractpub_date
2004-09-01 00:00:00pages
2138-46issue
9eissn
0730-7268issn
1552-8618journal_volume
23pub_type
杂志文章abstract::Firemaster 550 and Firemaster BZ-54 are two brominated formulations that are in use as replacements for polybrominated diphenyl ether (PBDE) flame retardants. Two major components of these mixtures are 2,3,4,5-tetrabromo-ethylhexylbenzoate (TBB) and 2,3,4,5-tetrabromo-bis(2-ethylhexyl) phthalate (TBPH). Both have been...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.94
更新日期:2010-03-01 00:00:00
abstract::To find the connections between microcystins and the phytoplankton community, coupled with environmental factors, we investigated 2 cyanobacteria blooming lakes, Lake Taihu (at the center of the Yangtze River Delta, eastern China) and Lake Yanghe (near Qinhuangdao City, northern China). Two years of data, including wa...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.4188
更新日期:2018-09-01 00:00:00
abstract::Although the introduction of non-native fish species has been shown to alter trophic ecology in aquatic ecosystems, there has been limited research on how invasive species alter methylmercury (MeHg) biomagnification in lacustrine food webs. We sampled surface water and biota from 8 lakes in Quebec, Canada, spanning a ...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.4831
更新日期:2020-11-01 00:00:00
abstract::Bisphenol A (BPA) is a ubiquitous chemical in the environment and potentially harmful to plants. However, relevant studies of the effects of BPA on plants are relatively scarce. In the present work, the effects of BPA on the biomass (fresh wt and dry wt), absorptive function (activity and absorptive area), and mineral...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.2770
更新日期:2015-01-01 00:00:00
abstract::Variable sizes of nanoparticles, ranging from nano to micro scale, are of toxicological interest. In the present study, the authors hypothesized that, in addition to the size, the shape of iron oxide (Fe2O3) nanoparticles is a major factor that contributes to particle cytotoxicity. Cytotoxicity to mouse macrophage cel...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.2735
更新日期:2014-12-01 00:00:00
abstract::Silver nanoparticles (Ag NPs) have been classified as the most abundant NP found in commercial products. In the present study, zebrafish (Danio rerio) and bacteria (Escherichia coli; ATCC 25922) were used to test the size-dependent toxicological effects of Ag NPs, the effects of ionic silver versus Ag NPs, and Ag NP e...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.1881
更新日期:2012-08-01 00:00:00
abstract::Safety factors are used in ecological risk assessments to extrapolate from the toxic responses of laboratory test species to all species representing that group in the environment. More accurate extrapolation of species responses is important. Advances in understanding the mechanistic basis for toxicological responses...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.382
更新日期:2011-01-01 00:00:00
abstract::Northern bobwhite (Colinus virginianus) and scaled quail (Callipepla squamata) from the Rolling Plains ecoregion in Texas and Oklahoma were evaluated for organochlorine pesticides, Pb, and Hg. Of all organochlorine pesticides analyzed, only p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE) and p,p'-dichlorodiphenyldich...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.2917
更新日期:2015-07-01 00:00:00
abstract::Waterborne Cu effects on the transcription of genes encoding ion-transporting proteins and the activities of these proteins were evaluated in gills of the blue crab Callinectes sapidus acclimated to diluted (2‰) and full (30‰) seawater. Crabs were exposed (96 h) to an environmentally relevant concentration of dissolve...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.370
更新日期:2011-01-01 00:00:00
abstract::The authors conducted 150 tests of the acute toxicity of resident fish and invertebrates to Cd, Pb, and Zn, separately and in mixtures, in waters from the South Fork Coeur d'Alene River watershed, Idaho, USA. Field-collected shorthead sculpin (Cottus confusus), westslope cutthroat trout (Oncorhynchus clarkii lewisi), ...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.1820
更新日期:2012-06-01 00:00:00
abstract::Currently toxicity data for iron (Fe) in seawater are limited; furthermore, these data are of poor quality as a result of the importance of Fe solubility in test solutions being overlooked. The present study characterized the solubility and lability of Fe(III) in seawater and then examined the effects of Fe(III) on th...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.4043
更新日期:2018-04-01 00:00:00
abstract::Methods are presented for selecting values of chemical properties of vapor pressure, water solubility, Henry's law constant, and octanol-water and octanol-air partition coefficients, which are subject to thermodynamic constraints, while taking advantage of all measurements. The aim of the mathematical procedures is to...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:
更新日期:2002-05-01 00:00:00
abstract::An increased demand for chemical toxicity evaluations has resulted in the need for alternative testing strategies that address animal welfare concerns. The fish embryo toxicity (FET) test developed for zebrafish (Danio rerio) is one such alternative, and the application of the FET test to other species such as the fat...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.2718
更新日期:2014-11-01 00:00:00
abstract::Mining of the world's second-largest nickel deposits in the area of Sudbury, Ontario, Canada, has caused acidification and metal saturation of some catchments. We conducted artificial stream studies in the years 2001 and 2002 to assess the effects of treated metal mine effluents (MMEs) from three different mining oper...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/04-116r.1
更新日期:2006-01-01 00:00:00
abstract::To develop a multimetal toxicity model requires insight into the relationships between the composition of metal mixtures and their toxicological effects on organisms. As a first step in developing such a model, quantitative data from binary and higher mixture studies of Cu, Cd, and Zn were compiled and used to assess ...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章,meta分析
doi:10.1002/etc.499
更新日期:2011-06-01 00:00:00
abstract::A dike failure at the Tennessee Valley Authority Kingston Fossil Plant in East Tennessee, United States, in December 2008, released approximately 4.1 million m(3) of coal ash into the Emory River. From 2009 through 2012, samples of mayfly nymphs (Hexagenia bilineata) were collected each spring from sites in the Emory,...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.3253
更新日期:2016-05-01 00:00:00
abstract::Freshwater mussels, one of the most imperiled groups of animals in the world, are generally underrepresented in toxicity databases used for the development of ambient water quality criteria and other environmental guidance values. Acute 96-h toxicity tests were conducted to evaluate the sensitivity of 5 species of juv...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.3642
更新日期:2017-03-01 00:00:00
abstract::The present study measured hepatic transcriptome responses in male rainbow darter (Etheostoma caeruleum) exposed to 2 municipal wastewater-treatment plants (MWWTPs; Kitchener and Waterloo) over 4 fall seasons (2011-2014) in the Grand River (Ontario, Canada). The overall goal was to determine if upgrades at the Kitchen...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.3741
更新日期:2017-08-01 00:00:00
abstract::The present study examined how subcellular partitioning of Cd in plants with different strategies to store and detoxify Cd may affect trophic transfer of Cd to the isopod Porcellio dilatatus. The plant species used were Lactuca sativa, a horticultural metal accumulator species; Thlaspi caerulescens, a herbaceous hyper...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/08-154.1
更新日期:2008-12-01 00:00:00
abstract::The Chemical Aquatic Fate and Effects (CAFE) database is a centralized repository that allows for rapid and unrestricted access to data. Information in CAFE is integrated into a user-friendly tool with modules containing fate and effects data for 32 377 and 4498 chemicals, respectively. Toxicity data are summarized in...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.3289
更新日期:2016-06-01 00:00:00
abstract::Storm events lead to agricultural and urban runoff, to mobilization of contaminated particulate matter, and to input from combined sewer overflows into rivers. We conducted time-resolved sampling during a storm event at the Ammer River, southwest Germany, which is representative of small river systems in densely popul...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.4910
更新日期:2021-01-01 00:00:00
abstract::Hydrocarbon-inducible cytochrome P4501A (CYP1A) expression was measured, as ethoxyresorufin-O-deethylase (EROD) activity, in livers of wintering harlequin ducks (Histrionicus histrionicus) captured in areas of Prince William Sound, Alaska, USA, oiled by the 1989 Exxon Valdez spill and in birds from nearby unoiled area...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.129
更新日期:2010-05-01 00:00:00
abstract::Manufactured gas plant (MGP) tar and wastewater solids historically were discharged into the Penobscot River, Maine,USA, via a sewer at the Bangor Landing site. The tar and wastewater solids accumulated in riverbed sediment over a 5-hectare area downstream from the sewer outfall. Much of the tarry sediment is a harden...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/08-603.1
更新日期:2009-11-01 00:00:00
abstract::The present study examined the occurrence and concentration of per- and polyfluoroalkyl substances (PFAS) measured in game ducks (13 compounds), water, sediment, and soils (33 compounds) in waterways in Victoria, Australia. The study aimed to identify potential ecological and human health risks from measured PFAS conc...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.4818
更新日期:2020-07-16 00:00:00
abstract::There is global concern regarding the fate and effects of microplastics in the environment, particularly in aquatic systems. In the present study, ethylene acrylic acid copolymer particles were evaluated in a chronic toxicity study with the aquatic invertebrate Daphnia magna. The study design included a natural partic...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.4745
更新日期:2020-08-01 00:00:00
abstract::Estrogenicity of sewage effluents, and related ecotoxicological effects in effluent-receiving environments, have been widely reported over the last 2 decades. However, relatively little attention has been given to other endocrine pathways that may be similarly disrupted by a growing list of contaminants of concern. Fu...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1002/etc.3051
更新日期:2015-10-01 00:00:00
abstract::Three methods for estimating the octanol-water partition coefficient (Kow) based on its relationship with capacity factors on reversed-phase (RP) high-performance liquid chromatography (HPLC) columns were compared in terms of their applicability to highly hydrophobic compounds (HHCs). Methods based on simple isocratic...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/05-675r.1
更新日期:2006-08-01 00:00:00
abstract::Sublethal test methods are being used with increasing frequency to measure sediment toxicity, but little is known about the relative sensitivity of these tests compared to the more commonly used acute tests. The present study was conducted to compare the sensitivity of several acute and sublethal methods and to invest...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/07-285.1
更新日期:2008-04-01 00:00:00
abstract::Sheepshead minnows (Cyprinodon variegatus) were continuously exposed to two concentrations of polycyclic aromatic hydrocarbons (PAHs) dissolved in seawater (sigma PAH = 7.57 and 72.31 microg/L) for 36 d, followed by 8 d of depuration. The PAHs studied were naphthalene (NPH or C0-NPH), phenanthrene (PHE or C0-PHE), pyr...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/03-173
更新日期:2004-06-01 00:00:00
abstract::The results of the present study have demonstrated the utility of an estrogen receptor (ER) competitive ligand-binding assay, a hepatocyte vitellogenin (VTG) induction bioassay, and an ER reporter gene bioassay in characterizing the activity of model estrogen agonists (17beta-estradiol [E2], ethynylestradiol, and nony...
journal_title:Environmental toxicology and chemistry
pub_type: 杂志文章
doi:10.1897/05-686r.1
更新日期:2006-12-01 00:00:00