A5037722586- Fish Ecology and Management Studies
- Environmental Toxicology and Ecotoxicology
- Reproductive biology and impacts on aquatic species
- Marine and fisheries research
- Fish Biology and Ecology Studies
- Pharmaceutical and Antibiotic Environmental Impacts
- Aquaculture Nutrition and Growth
- Toxic Organic Pollutants Impact
- Isotope Analysis in Ecology
- Mercury impact and mitigation studies
- Effects and risks of endocrine disrupting chemicals
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Water Quality and Pollution Assessment
- Environmental and Social Impact Assessments
- Aquatic Invertebrate Ecology and Behavior
- Pesticide and Herbicide Environmental Studies
- Sperm and Testicular Function
- Soil and Water Nutrient Dynamics
- Heavy metals in environment
- Mine drainage and remediation techniques
- Analytical chemistry methods development
- Marine animal studies overview
- Aquaculture disease management and microbiota
- Water Quality and Resources Studies
- Atmospheric and Environmental Gas Dynamics
University of Calgary
2020-2024
University of New Brunswick
2012-2023
Wilfrid Laurier University
2017-2020
Canada’s Oil Sands Innovation Alliance
2015-2019
Canadian Water Network
2012
Environment and Climate Change Canada
1996-2001
University of Guelph
1983-2000
National Water Research Institute
1998-2000
Fisheries and Oceans Canada
1991-1996
Great Lakes Institute of Management
1991-1996
White sucker (Catostomus commersoni) collected from a site receiving primary-treated bleached kraft mill effluent (BKME) were older and had higher condition factor than fish at reference grew more slowly three other areas of Lake Superior. The BKME-exposed also exhibited an increased age to maturity, smaller gonads, lower fecundity with age, absence secondary sex characteristics in males, females failed show increase egg size age. Lower serum estradiol testosterone concentrations greater...
Abstract Fish collected from the receiving areas of 12 Canadian pulp mills were examined, including sites effluent kraft using chlorine as well sulfite mills. Field collections included sampling water for chemistry and toxicity testing, local fish organ weights, hepatic MFO (ethoxyresorufin-O-deethylase, EROD) activity, plasma steroid levels, levels liver dioxins. The main objectives this study to determine whether discharge other than Jackfish Bay was associated with physiological or...
Lake whitefish (Coregonus clupeaformis) exposed to primary treated bleached kraft mill effluent (BKME) had reduced gonadal development and increased liver size relative two reference populations. These results parallel our previous work on the white sucker (Catostomus commersoni) BKME at same Superior site. More detailed studies conducted in 1990, after installation of an aeration stabilization basin pulp mill, found that lake exhibited gonad sizes, delayed age maturation, decreased levels...
Abstract Relative sensitivity and correlations between the Microtox® test three commonly used acute lethality bioassays (i.e., rainbow trout, fathead minnow, Daphnia ) are reviewed discussed. All relevant data available for comparison were separated evaluated based on chemical groupings. Generally, Microtox was more sensitive than or as tests pure individual organics, but less to most inorganics. not effluents leachates with a high component of insecticides, herbicides, inorganics,...
The relationship of concentrations copper (Cu) and zinc (Zn) in white sucker (Catostomus commersoni) tissues to those metals water, sediment, benthic invertebrates (food) were investigated a field study. Fish collected from six northern Ontario lakes contaminated with mixed-metal mining wastes. Cu correlated water but not sediment concentrations. Conversely, Zn There differences among fish different the liver, kidney, gill, bone (Zn only). no significant correlations between tissue metal...
Abstract The second cycle of the pulp and paper environmental effects monitoring (EEM) program reported its results on April 1, 2000, preliminary analysis fish survey have been conducted. EEM is a cyclical evaluation receiving water impacts associated with discharge effluent, consisting evaluations populations, benthic invertebrate communities, effluent toxicity other components. This represents summary 114 surveys for results, as by consulting companies to mills. Less than 10% cases failed...
White sucker (Catostomus commersoni) were collected from lakes with elevated levels of both copper (13–15 μg∙L −1 ) and zinc (209–253 control lakes. In all cases the fish reached maturity between 4 6 yr age, until age there no differences in length or weight contaminated After this sites significantly smaller shorter than those sites. addition, female failed to exhibit significant increases either after maturity. The also exhibited decreases egg size fecundity, fecundity an increased...