Impact of mixing and resting times on the droplet size distribution and the petroleum hydrocarbons' concentration in diluted bitumen-based water-accommodated fractions (WAFs).

The preparation of Water-accommodated Fractions (WAFs) and chemically enhanced WAFs (CEWAFs) are essential for evaluating oil toxicity. The Chemical Response to Oil Spills: Ecological Research Forum (CROSERF) method was widely adopted, with variables (e.g.

Prostaglandins prevent acetaminophen induced embryo toxicity in zebrafish (Danio rerio).

Previous research in our laboratory showed that acetaminophen (ACE) induced embryonic mortality and abnormalities in zebrafish. Here, we examined the dose response of ACE (0.05-50 μg L) in zebrafish embryos.

Effects of chronic, parental pharmaceutical exposure on zebrafish (Danio rerio) offspring.

In this study we explored how parental exposure to pharmaceuticals influences reproduction in offspring. Adult zebrafish (Danio rerio) were exposed for 6 weeks to 10 μgL(-1) of carbamazepine (CBZ) and gemfibrozil (GEM), two commonly prescribed drugs. Embryos were collected, reared in clean water until sexual maturity and then assessed for reproductive output, courtship, sperm function and organ histology.

Chronic, low concentration exposure to pharmaceuticals impacts multiple organ systems in zebrafish.

Pharmaceuticals are found in both receiving and drinking water due to their persistent release in waste-water effluents, raising concerns for environmental and human health. Chronic, aqueous exposure of zebrafish (Danio rerio) to environmentally relevant concentrations of acetaminophen (ACE), venlafaxaine (VEN) (10μgL(-1)), carbamazepine (CBZ) and gemfibrozil (GEM) (0.5 and 10μgL(-1)) decreased reproductive output.

Chronic effects of exposure to a pharmaceutical mixture and municipal wastewater in zebrafish.

Pharmaceuticals and personal care products (PPCPs) are discharged in municipal wastewater. Effects in aquatic organisms exposed to individual pharmaceuticals in the laboratory have raised concerns regarding the environmental impacts of PPCPs, yet environmental exposures are always to complex mixtures. In this study, adult zebrafish (Danio rerio) showed significantly decreased embryo production after a 6 week exposure to a pharmaceutical mixture (MIX; 0.

Dietary iron alters waterborne copper-induced gene expression in soft water acclimated zebrafish (Danio rerio).

Metals like iron (Fe) and copper (Cu) function as integral components in many biological reactions, and, in excess, these essential metals are toxic, and organisms must control metal acquisition and excretion. We examined the effects of chronic waterborne Cu exposure and the interactive effects of elevated dietary Fe on gene expression and tissue metal accumulation in zebrafish. Softwater acclimated zebrafish exposed to 8 microg/l Cu, with and without supplementation of a diet high in Fe (560 vs.