A5056595024- Environmental Toxicology and Ecotoxicology
- Pesticide and Herbicide Environmental Studies
- Pharmaceutical and Antibiotic Environmental Impacts
- Insect and Pesticide Research
- Microplastics and Plastic Pollution
- Aquatic Invertebrate Ecology and Behavior
- Effects and risks of endocrine disrupting chemicals
- Toxic Organic Pollutants Impact
- Marine Biology and Environmental Chemistry
- Soil and Water Nutrient Dynamics
- Plant and animal studies
- Pesticide Exposure and Toxicity
- Insect-Plant Interactions and Control
- Recycling and Waste Management Techniques
- Antifungal resistance and susceptibility
- Fungal Infections and Studies
- Heavy metals in environment
- Chemistry and Chemical Engineering
- Pesticide Residue Analysis and Safety
- Per- and polyfluoroalkyl substances research
- Aquatic Ecosystems and Phytoplankton Dynamics
- Freshwater macroinvertebrate diversity and ecology
- Fish Ecology and Management Studies
- Orthopaedic implants and arthroplasty
- Water Quality Monitoring and Analysis
University of Guelph
2016-2025
Environment and Climate Change Canada
2016-2023
Abstract Using the hoary squash bee ( Peponapis pruinosa ) as a model, we provide first probabilistic risk assessment of exposure to systemic insecticides in soil for ground-nesting bees. To assess acute and chronic scenarios Cucurbita field crops, concentrations clothianidin, thiamethoxam imidacloprid (neonicotinoids) chlorantraniliprole (anthranilic diamide) cropped were plotted produce an environmental distribution each insecticide. The probability exceedance several endpoints (LC 50 s)...
The Common Eastern Bumblebee (Bombus impatiens) is native to North America with an expanding range across Canada and the USA. This species commercially produced primarily for greenhouse crop pollination a common abundant component of wild bumblebee fauna in agricultural, suburban urban landscapes. However, there dearth pesticide toxicity information about American bumblebees. present study determined acute oral lethal (48-h LD50) of: butenolide, flupyradifurone (>1.7 μg/bee); diamide,...
Biosolids generally contain the microbiocidal agents triclosan (TCS) and triclocarban (TCC) that are persistent during wastewater treatment sorp to organic material. The present study investigated concentration of TCS in tissues radish, carrot, soybean grown potted soil amended with biosolids. Highest mean concentrations root tissue midway through life cycle were 24.8 ng/g, 49.8 48.1 ng/g dry weight, respectively; by conclusion test, however, had declined 2.1 5.5 8.4 respectively. radish...
Abstract Although not assessed in standard ecotoxicological tests, exposure to a toxicant that does result an observable adverse effect the parents may lead transgenerational effects. These are effects observed unexposed offspring as of their parents’ toxicant. The goal this study was investigate whether freshwater snails exposed Using copper (Cu) reference toxicant, investigated magnitude snail Planorbella pilsbryi resulted change sensitivity juvenile subsequent aqueous Cu. This also born...
Biosolids contain a variety of pharmaceuticals and personal care products (PPCPs). Studies have observed the uptake PPCPs into plants grown in biosolids-amended soils. This study examined ability Dynamic Plant Uptake (DPU) model Biosolids-amended Soil Level IV (BASL4) to predict concentration eight tissue soil under number exposure scenarios. Concentrations edible predicted by models were compared concentrations reported literature calculating estimated human daily intake values for both...
Abstract Environmental DNA (eDNA) methods are being developed for use in conservation biology to improve upon conventional species survey techniques. Validation of eDNA different environmental contexts is required if they be widely adopted. One potential application the detection freshwater mussels (Bivalvia: Unionidae), which among most imperiled North America. Conventional unionid highly invasive and can difficult conduct due issues with morphological identification their cryptic habitat....
Abstract Substituted phenylamine antioxidants (SPAs) are high production volume chemicals that incorporated into a variety of commercial products (e.g., polymers, dyes, lubricants). There few data on chronic toxicity SPAs to fish and no the early life stages fish. The physicochemical properties would suggest if they were enter an aquatic ecosystem partition sediment. Therefore, present study focused investigating effect sediment‐associated fathead minnow ( Pimephales promelas) . Eggs larvae...
Cryptococcus neoformans is a human fungal pathogen responsible for fatal infections, especially in patients with depressed immune system. Overexposure to antifungal drugs due prolonged treatment regimens and structure-similar applications agriculture have weakened the efficacy of current antifungals clinic. The rapid evolution resistance urges discovery new compounds that inhibit virulence determinants, rather than directly killing pathogen, as alternative strategies overcome disease reduce...