Biology
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Understanding How Northern North American Freshwater Fishes are Responding to Rapid Environmental Change
(2021-03-08)Many northern fishes are experiencing unprecedented environmental changes across their ranges. However, limited empirical evidence exists for understanding how these changes may combine and potentially interact to influence ... -
The Role Of Vab-3 in the Caenorhabditis Elegans Oxidative Stress Response
(2021-03-08)The oxidative stress response protects the cell by balancing the number of free radicals inside the cell. BRAP2 is a Ras effector with ubiquitin ligase activity and conserved in C. elegans. Our lab has previously shown ... -
Development of a Pokeweed Mosaic Virus Vector as a Molecular Tool to Study Host Protein Function in Phytolacca Americana
(2021-03-08)American pokeweed (Phytolacca americana) is a plant known for both the synthesis of pokeweed antiviral protein (PAP) and the hyperaccumulation of heavy metals. Progress in understanding the factors behind viral resistance ... -
The use of compact surveillance radar to study polar bears (Ursus maritimus) near Churchill, Manitoba, Canada
(2021-03-08)Many species of wildlife are currently facing intense competition with people for space and resources, resulting in increasing levels of human-wildlife conflict. In Canadas North, climate change is exacerbating this issue ... -
What's Really Out There? Investigations into the Effects of Pesticides and Pathogens on Bee Health
(2021-03-08)Bees provide crucial pollination services to both cultivated and wild plants. In recent decades there were large declines in the populations of several native bee species and in the health of managed honey bee colonies. ... -
Enzyme Activities in the Intestinal Layers of Teleost Fishes: Endogenous versus Exogenous Contribution
(2021-03-08)Digestive enzymes are essential for the catabolism of macromolecules and are produced endogenously by the animal or exogenously by the gastrointestinal bacteria. This thesis explored the contribution of endogenous versus ... -
Sexual Signaling in Male Vervet Monkeys (Chlorocebus Pygerythrus); Influences of Hormones, Behaviour, and Parasitism on Scrotal and Penile Skin Colouration
(2021-03-08)Male secondary sexual characteristics may convey information about the signaller. The red penis and blue scrotum of male vervet monkeys make them a good species to examine variation in signal expression. We quantified ... -
Behavioral Endocrinology of Male Dispersal in Vervet Monkeys at Lake Nabugabo, Uganda
(2021-03-08)Dispersal between social groups reduces risks of inbreeding and may provide individuals with reproductive opportunities. However, this movement may come with socio-ecological costs, such as risks of predation and starvation, ... -
Roles of Calmodulin and a N-Methyl-D-Aspartate Receptor - Pannexin-1 Signaling Complex in Connexin-36 Plasticity
(2021-03-08)The synergic actions of calcium, calmodulin, and calmodulin kinase II are the central mechanism for synaptic plasticity. Until the last two decades, chemical synapses through N-methyl D-aspartate receptors were thought to ... -
The Impact of Monocular Self-Occlusions on Depth Perception
(2020-11-13)Depth perceived from two-object arrangement half-occlusions has been shown to depend on the occluded regions size and texture properties. However, monocular regions also result from single-object self-occlusions where the ... -
Barrier Properties and Molecular Physiology of Fish Gill Epithelia and Gill Epithelium Models
(2020-11-13)The fish gill epithelium interfaces directly with surrounding water and participates in numerous physiological processes. However, the barrier properties of the fish gill epithelium have been largely overlooked until recent ... -
The Smad7 Protein Interaction Network in Skeletal Myogenesis
(2020-11-13)Myogenesis or muscle development begins with cell cycle arrest and continues with a differentiation program that converts myoblasts into multi-nucleated cells referred to as myotubes. A complex hierarchy of transcriptional ... -
The Conservation Management and Ecology of Northeastern North American Bumble Bees
(2020-11-13)Bumble bees (Bombus spp.; Apidae) are among the pollinators most in decline globally with a main cause being habitat loss. Habitat requirements for bumble bees are poorly understood presenting a research gap. The purpose ... -
Exercise Dose Dependent Atrial Remodelling and Atrial Fibrillation
(2020-11-13)The dependence of atrial fibrillation (AF) on exercise dose is U shaped. To assess the physiological basis for this relationship, we swam 3 groups of CD1 mice at variable daily durations (120, 180 and 240 minutes per day) ... -
Circadian Rhythm in Intrinsic Heart Rate
(2020-11-13)Heart rate (HR) as well as adverse cardiac events (i.e. myocardial infarction, arrhythmias, stroke, and sudden cardiac death) show circadian patterns. Circadian HR fluctuations are traditionally thought to be controlled ... -
Analysis of Spatial Learning in Honeybee Foragers Using the Food Search Box Assay
(2020-11-13)Given the under-representation of genetic analyses of spatial learning in honeybee literature, I designed an experiment to investigate gene expression profiles associated with spatial learning. The experimental design ... -
Hippocampal and Neocortical Dynamics During Long-term Memory in Macaques
(2020-11-13)Memory is one of the most important faculties of the mind. Memory keeps a record of our experiences which enriches our sense of self, enables us to make adaptive decisions in the present and informed plans for the future. ... -
The Relative Role of Nutrient Inputs, Climate, Land Use, and Spatial Patterns on Chlorophyll a Concentrations Worldwide
(2020-11-13)Water quality degradation is one of the largest threats to freshwater ecosystems, and understanding how multiple drivers such as nutrients, climate, morphology, and land use impact water quality is of high interest because ... -
Shrub Density Effects on the Structure and Composition of a Desert Animal Community
(2020-11-13)Positive interactions between shrubs and animals are frequent in desert ecosystems. Shrub canopies can provide refuge to some animal species from predators and shelter from stressful environmental conditions by ameliorating ... -
Variety is the Spice of Desert Bird Life: Foundation Plant Species Provide Habitat Heterogeneity for Bird Communities in the Mojave Desert
(2020-11-13)Plants provide habitat and resources to the desert animal community. However, these interactions are species specific and can depend on season. I tested the hypothesis that birds use different foundation species in deserts ...
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