Browsing Department of Biology Graduate Theses by Title
Now showing items 192-211 of 330
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IMAGING BIOLOGICALLY-BASED CLATHRATE HYDRATE INHIBITORS
(2010-04-13)The unscheduled formation of gas hydrate plugs in oil and gas pipelines, which can lead to serious mechanical and personnel damage, is a problematic issue in the petroleum industry. Traditionally, thermodynamic inhibitors ... -
The Impact of Migration on the Evolution and Conservation of an Endemic North American Passerine: Loggerhead Shrike (Lanius ludovicianus)
(2011-01-26)Migration acts as a selective force on the ecology and evolutionary trajectory of species, as well as presenting fundamental challenges for conservation. My thesis examines the impact of migration by exploring patterns ... -
Importance of Climate on Boreal Lakes from Northwest Ontario Over Millennia: A Paleolimnological Perspective
(2014-12-08)The lack of long-term data on the response of boreal lakes to climate change has been seen as an impediment to the assessment of the vulnerability and risks that northwest Ontario faces in light of future climate change. ... -
In vivo Interactions between PTP-3 RPTP and Various Signaling Pathways in the Caenorhabditis elegans Nervous System
(2014-09-23)The C. elegans nervous system offers a rewarding model in which many pathways can be studied with. There are many genes conserved in both invertebrates and vertebrates that are necessary for proper nervous system development. ... -
IN VIVO PHOSPHORYLATION OF BACTERIAL–TYPE PHOSPHOENOLPYRUVATE CARBOXYLASE FROM DEVELOPING CASTOR OIL SEEDS AT THREONINE-4 AND SERINE-451
(2011-08-23)Phosphoenolpyruvate carboxylase (PEPC) is a tightly controlled anaplerotic enzyme situated at a pivotal branchpoint of plant C-metabolism. Plant genomes encode several closely related plant-type PEPC (PTPC) isozymes, and ... -
In vivo regulatory phosphorylation of bacterial-type phosphoenolpyruvate carboxylase from developing castor oil seeds
(2011-09-07)PEPC [PEP(phosphoenolpyruvate) carboxylase] is an essential and tightly controlled enzyme located at the core of plant C-metabolism. It fulfils a broad spectrum of non-photosynthetic functions, particularly the anaplerotic ... -
Individual Variation in Glucocorticoid Levels: a Field Study of Repeatability
We readily appreciate the wide phenotypic diversity that distinguishes animal species; however, even within a population of the same species, individuals can express significant phenotypic variation in their behavior, ... -
Inducible GAL4 Systems for Gene Expression Control in Adult Drosophila melanogaster
The ability to express a gene of interest in a directed place, time and at a certain level can be achieved by the use of gene expression control tools. The UAS/GAL4 system is by far the most widely used tool in Drosophila ... -
Inducible gene expression systems for aging studies in Drosophila melanogaster
(2009-01-08)Two common strategies used to identify specific genes that influence aging in Drosophila melanogaster are overexpression screens and candidate gene approaches. Both of these strategies rely on gene expression systems. A ... -
Infant-directed behaviour in the naturally paternal male dwarf hamster, Phodopus campbelli, is neither activationally nor organizationally regulated by activity at the progesterone receptor
(2009-09-04)Phodopus campbelli is a naturally biparental dwarf hamster with males so paternal they will act as midwives during the birth of their litter. The hormonal regulation of parental behaviour has been well established in many ... -
The Influence of Dispersal on Zooplankton Community Structure and Species Co-Occurrence Patterns
(2011-09-28)The influence of regional processes, such as dispersal, on ecological communities has been the focal point of considerable ecological research. Evidence has shown that dispersal can impact community composition through ... -
The influence of landscape on genetic structure of a threatened reptile: the eastern massasauga rattlesnake
(2011-10-14)Understanding the impacts of both natural and anthropogenic landscape features on genetic diversity, population structure and connectivity has important implications for conservation of species living in fragmented ... -
The influence of nutritional phosphate deprivation on the secreted proteome of Arabidopsis thaliana
(2010-04-29)This thesis examines the influence of nutritional phosphate (Pi) deprivation on extracellular proteins secreted by the model plant Arabidopsis thaliana. Initial studies compared the secretome of Pi-sufficient (+Pi) versus ... -
Integrating the effects of climate change and caribou herbivory on vegetation community structure in low Arctic tundra
(2013-06-07)Arctic tundra vegetation communities are rapidly responding to climate warming with increases in aboveground biomass, particularly in deciduous shrubs. This increased shrub density has the potential to dramatically alter ... -
Integrating theory and experimentation in the study of malaria
(2009-08-25)Malaria poses a serious threat to much of the developing world and an enormous effort is under way to design vaccines and other novel interventions. Nevertheless, we understand very little about the ecology and evolution ... -
Intra-Specific Variation in Sensitivity to Low Calcium in Daphnia Pulex
Freshwater systems experience many stressors that can affect aquatic communities; one such stressor is calcium decline. Cation depletion of surrounding soils and watersheds of many North American and Scandinavian lakes is ... -
Intraspecific Behavioural Diversity in a Freshwater Zooplankton: A study of the fitness consequences of vertical migration behaviour for distinct morphs of Daphnia pulicaria
(2016-05-30)The literature on niche separation and coexistence between species is large, but there is widespread variation in behavioural strategy between individuals of the same species that has received much less attention. Understanding ... -
Intraspecific Variation of Three Phenotypic Morphs of Daphnia pulicaria in the presence of a Strong Environmental Gradient
(2014-04-08)Freshwater lake ecosystems often exhibit strong oxygen, and temperature gradients across which many zooplankton species live. Daphnia sp. vary in their ability to up-regulate hemoglobin in response to low oxygen environments. ... -
Investigating NLR-mediated immunity and Pseudomonas syringae effector interactions with two MACPF domain proteins in Arabidopsis thaliana.
To disarm plant defenses, successful pathogens secrete an arsenal of diverse virulence factors, termed effectors, into the host cell to shut down key components of the plant immune signaling pathway. To protect against ... -
Investigating Suberin Biosynthesis in Poplar: Candidate Genes and Chemical Composition
For plants, lipid barriers represent a critical adaptation to terrestrial life, providing a first line of defense against biotic and abiotic stressors. Among these lipid barriers, suberized cell walls protect both internal ...