Tracking antibiotic resistance genes (ARGs) during earthworm conversion of cow dung in northern China.

abstract：:Transformation of phenol (14C6H5OH) penetrating through the roots of mung bean (Phaseolus aureus) and wheat (Triticum vulgare) sterile seedlings has been studied. Phenol was coupled to low-molecular-weight peptides, producing phenol-peptide conjugates. Hydrolytic cleavage of the conjugates liberated initial labeled ph...

journal_title：Ecotoxicology and environmental safety

authors： Ugrekhelidze D,Kvesitadze G,Arziani B,Mithaishvili T,Phiriashvili V

更新日期：1999-02-01 00:00:00

abstract：:The effects of exposure of the fiddler crab, Uca pugilator, to the estrogenic xenobiotics Aroclor 1242, diethylstilbestrol (DES), endosulfan, and 4-octylphenol on chitobiase activity in the epidermis and hepatopancreas were investigated. Endosulfan at 0.05 and 0.20 mg/liter significantly inhibited chitobiase in the ep...

journal_title：Ecotoxicology and environmental safety

authors： Zou E,Fingerman M

更新日期：1999-02-01 00:00:00

abstract：:Labile Zn concentration was monitored by differential pulse anodic stripping voltammetry (DPASV) throughout the exponential growth phase of the marine diatom Skeletonema costatum (Grev.) Cleve. Algal blooms were induced both under natural conditions and in laboratory experiments using a salt groundwater (salinity 33) ...

journal_title：Ecotoxicology and environmental safety

authors： Schintu M,Koussih L,Chevolot L,Amiard JC,Robert JM

更新日期：1999-03-01 00:00:00

abstract：:In previous studies performed in this laboratory it was realized that in a broad concentration range (0.5-8 mM) dichromate does not induced red blood cell (RBC) peroxidation. To investigate the reasons behind RBC protection against chromate-induced peroxidation, the effects of 8 mM dichromate on white ghost and RBC pe...

journal_title：Ecotoxicology and environmental safety

authors： Fernandes MA,Mota IM,Silva MT,Oliveira CR,Geraldes CF,Alpoim MC

更新日期：1999-05-01 00:00:00

abstract：:Enzyme activity modulation by cadmium in the liver of the teleost fish Sparus aurata was investigated in vivo following 3 and 6 days of CdCl2 administration (2.5 mg/kg body wt). The specific activities of the mitochondrial enzymes NAD-isocitrate dehydrogenase, succinate dehydrogenase, and malate dehydrogenase were sti...

journal_title：Ecotoxicology and environmental safety

authors： Vaglio A,Landriscina C

更新日期：1999-05-01 00:00:00

abstract：:The pesticide formulation Salmosan (47.5% w/w azamethiphos) is currently registered for use, in Canada, to treat salmonids for infestations of the copepod parasites, Lepeophtheirus salmonis and Caligus elongatus (sea lice). Determination was made of the acute lethality of this product to the three larval stages, the f...

journal_title：Ecotoxicology and environmental safety

authors： Burridge LE,Haya K,Zitko V,Waddy S

更新日期：1999-06-01 00:00:00

abstract：:Copper mining and smelting were important activities in various predesert wadis during the Iron Age, Nabatean, Roman, and Byzantine periods in southern Jordan and major spoil tips together with slag heaps remain as a legacy of such enterprises. Barley has grown in the area for a prolonged period and currently wild bar...

journal_title：Ecotoxicology and environmental safety

authors： Pyatt FB,Barker GW,Birch P,Gilbertson DD,Grattan JP,Mattingly DJ

更新日期：1999-07-01 00:00:00

abstract：:Literature on the basic endocrinology of crustaceans, such as crab, lobster and shrimp, suggest that estrogens, e.g., 17beta-estradiol, are stimulating hormones in female sexual maturation and egg production in crustaceans. The copepod Acartia tonsa, has continuous egg production. A profile of the egg production per t...

journal_title：Ecotoxicology and environmental safety

authors： Andersen HR,Halling-Sørensen B,Kusk KO

更新日期：1999-09-01 00:00:00

abstract：:In a laboratory incubation study, the effect of select heavy metals on methane (CH(4)) production in three rice soils was investigated under flooded conditions. Heavy metals behaved differently in their effect on methanogenesis in different soils and methane-producing bacteria. Cd, Cu, and Pb inhibited CH(4) productio...

journal_title：Ecotoxicology and environmental safety

authors： Mishra SR,Bharati K,Sethunathan N,Adhya TK

更新日期：1999-09-01 00:00:00

abstract：:Comparative effects of sublethal doses (0, 0.1, 0.2. 0.4, 0.8, and 1 nmol/bee) of cypermethrin and fenitrothion have been studied on emerging honeybees. The insecticides were injected intrathoracially between the third and the fourth segment. Biochemical effects were determined over a 3-h period. Both cypermethrin and...

journal_title：Ecotoxicology and environmental safety

authors： Bendahou N,Bounias M,Fleche C

更新日期：1999-10-01 00:00:00

abstract：:Assessment of the influence of carbofuran on the nontarget cyanobacterium Anabaena doliolum revealed that this sheathless heterocystous form of cyanobacteria was more sensitive to the insecticide carbofuran. Anabaena doliolum was initially able to utilize low concentrations of carbofuran, whereas higher concentrations...

journal_title：Ecotoxicology and environmental safety

authors： Hammouda O

更新日期：1999-10-01 00:00:00

abstract：:A sediment site in the Lake Jämsänvesi (municipality of Petäjävesi, Finland) contaminated by creosote was investigated to assess the possible ecotoxicological risks it may cause to benthic animals, including ones which may arise due to physical measures in remediating the site. It is suggested that polycyclic aromatic...

journal_title：Ecotoxicology and environmental safety

authors： Hyötyläinen T,Oikari A

更新日期：1999-11-01 00:00:00

abstract：:The potential health risk of a group of chemicals, popularly known as "endocrine disrupters," has generated considerable scientific debate and media attention. The endocrine disrupter hypothesis asserts that exogenous substances with estrogenic or other hormonally active properties may adversely affect human health. P...

journal_title：Ecotoxicology and environmental safety

authors： Juberg DR

更新日期：2000-02-01 00:00:00

abstract：:Phthalate esters (PEs) are an important class of industrial chemicals for which an extensive aquatic toxicity database is available. The objectives of this study were to use these data to develop quantitative structure-activity relationships (QSARs) that describe aquatic toxicity for different freshwater and marine sp...

journal_title：Ecotoxicology and environmental safety

authors： Parkerton TF,Konkel WJ

更新日期：2000-01-01 00:00:00

abstract：:The human immunodeficiency virus (HIV) is the retrovirus that causes the acquired immune deficiency disease syndrome (AIDS). This review discusses the anti-HIV activity of extracts and compounds isolated from freshwater and marine algae, and cyanobacteria (formerly called "blue-green algae"). Compounds and extracts wi...

journal_title：Ecotoxicology and environmental safety

authors： Schaeffer DJ,Krylov VS

更新日期：2000-03-01 00:00:00

abstract：:The administration of cadmium, as food supplement, its bioaccumulation, and the effects on the development of tilapia Oreochromis niloticus were investigated. The average size and weight and its behavior compared with controls were investigated during the period January 31, 1997, until March 31, 1999. At intervals of ...

journal_title：Ecotoxicology and environmental safety

authors： Nogami EM,Kimura CC,Rodrigues C,Malagutti AR,Lenzi E,Nozaki J

更新日期：2000-03-01 00:00:00

abstract：:The coordinated variations of the adenylate energy charge and ATP/ADP ratio were modeled and a function that depends on the numerical value of the adenylate kinase-catalyzed reaction has been derived. The model allows sensitive detection of the effects of xenobiotics on adenylate kinase and its cellular environment an...

journal_title：Ecotoxicology and environmental safety

authors： Thébault MT,Raffin JP,Picado AM,Mendonça E,Skorkowski EF,Le Gal Y

更新日期：2000-05-01 00:00:00

abstract：:Elevated environmental concentrations of metals are usually associated with the impact of urbanization. The present study is focused on metal contamination in urban sediments. A field survey was carried out to determine the distribution of four metals, i.e., cadmium (Cd), lead (Pb), copper (Cu), and zinc (Zn), in the ...

journal_title：Ecotoxicology and environmental safety

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

更新日期：2000-05-01 00:00:00

abstract：:DNA adducts were analyzed by (32)P-postlabeling in liver and intestine of perch (Perca fluviatilis). Fish were collected in the receiving water of a bleached kraft pulp mill at Norrsundet, Sweden, on the coast of the Bothnian Sea, and in three different reference areas. Sampling was carried out the last week in Septem...

journal_title：Ecotoxicology and environmental safety

authors： Ericson G,Larsson A

更新日期：2000-06-01 00:00:00

abstract：:The statements and discussions in this commentary are based on the disastrous situation near Baia Mare in Romania, where a dam of a cyanide basin burst on January 30, 2000, with serious consequences. ...

journal_title：Ecotoxicology and environmental safety

authors： Korte F,Spiteller M,Coulston F

更新日期：2000-07-01 00:00:00

abstract：:Canola (Brassica napus) grown as a selected plant species for field phytoremediation of selenium (Se) may be harvested and utilized as Se-enriched forage for marginally Se-deficient lambs and cows. Two field studies were conducted under controlled conditions to evaluate the accumulation of Se into different animal tis...

journal_title：Ecotoxicology and environmental safety

authors： Bañuelos GS,Mayland HF

更新日期：2000-07-01 00:00:00

abstract：:Organic xenobiotics absorbed by roots and leaves of higher plants are translocated by different physiological mechanisms. The following pathways of xenobiotic detoxication have been observed in higher plants: conjugation with such endogenous compounds as peptides, sugars, amino acids, and organic acids; oxidative degr...

journal_title：Ecotoxicology and environmental safety

authors： Korte F,Kvesitadze G,Ugrekhelidze D,Gordeziani M,Khatisashvili G,Buadze O,Zaalishvili G,Coulston F

更新日期：2000-09-01 00:00:00

abstract：:Long-term exposure to 2,4,6-trinitrotoluene (TNT) can induce changes in the structure and activities of soil microbial communities. Such changes may be associated with an elevated microbial tolerance. An in situ respirometry technique based on the analysis of the substrate-induced respiration response to freshly added...

journal_title：Ecotoxicology and environmental safety

authors： Gong P,Gasparrini P,Rho D,Hawari J,Thiboutot S,Ampleman G,Sunahara GI

更新日期：2000-09-01 00:00:00

abstract：:Juvenile goldfish (Carassius auratus) were exposed to three widely used pesticides; carbofuran, diuron, and nicosulfuron. Acetylcholinesterase (AChE) activity and molecular forms of AChE were first characterized in brain and skeletal muscle of unexposed fish. Skeletal muscle had higher AChE activity than brain (306 an...

journal_title：Ecotoxicology and environmental safety

authors： Bretaud S,Toutant JP,Saglio P

更新日期：2000-10-01 00:00:00

abstract：:A field survey was conducted in 1989, 1994, and 1999 in order to monitor the soil and vegetation Se concentrations at the Kesterson upland grassland contaminated by Se-rich drainage sediment. The rate of Se dissipation estimated by the change of soil Se concentration, via volatilization, found to be about 1.1% per yea...

journal_title：Ecotoxicology and environmental safety

authors： Wu L,Banuelos G,Guo X

更新日期：2000-10-01 00:00:00

abstract：:The effect of a sublethal concentration of cadmium (0.06 mg/ L) was tested on the phototactic behavior of a positively phototactic Daphnia magna clone. In experiments lasting 10 min, using animals that had been exposed to cadmium for 1 to 6 h, it was observed that the animals became significantly less positively photo...

journal_title：Ecotoxicology and environmental safety

authors： Michels E,Semsari S,Bin C,De Meester L

更新日期：2000-11-01 00:00:00

abstract：:To determine the extent of brick tea consumption fluorosis in children living at elevations of 2000 and 4300 m, 519 children aged 8-15 years living in Xiege'er Town at 4300 m and Zhangmu Town at 2000 m were examined for dental fluorosis, their urinary fluoride concentration was determined, their dietary structure inve...

journal_title：Ecotoxicology and environmental safety

authors： Cao J,Zhao Y,Liu J,Xirao R,Danzeng S

更新日期：2001-01-01 00:00:00

abstract：:In the scope of environmental risk assessment for new and existing chemicals a generic model is developed to predict the possible concentration of pollutants after passage of sewage treatment plants. The model combines Monod kinetics with mass transfer rates through an imaginary boundary layer between mixed liquor and...

journal_title：Ecotoxicology and environmental safety

authors： Blok J

更新日期：2001-02-01 00:00:00

abstract：:The sexual ratio of Gobiocypris rarus exposed to 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and 17 beta-estradiol from embryo to sexually mature revealed feminization and overdevelopment of connective tissue in male fish gonad in 2--30 pg/L TCDD concentration range. Daphnia magna was not sensitive to the high dose of ...

journal_title：Ecotoxicology and environmental safety

authors： Wu WZ,Li W,Xu Y,Wang JW

更新日期：2001-03-01 00:00:00

abstract：:Pesticides and heavy metals are common environmental contaminants that can cause neurotoxicity to aquatic organisms, impairing reproduction and survival. Neurotoxic effects of cadmium and carbaryl exposures were estimated in larval rainbow trout (RBT; Oncorhynchus mykiss) using changes in physiological endpoints and c...

journal_title：Ecotoxicology and environmental safety

authors： Beauvais SL,Jones SB,Parris JT,Brewer SK,Little EE

更新日期：2001-05-01 00:00:00