Browsing Biological Sciences by Title
Now showing items 21-40 of 67
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Environmental Factors Influencing Tumor Associated Pericyte Phenotype in Pancreatic Cancer
(North Dakota State University, 2021)Pancreatic ductal adenocarcinoma (PDAC) is the third leading cause of cancer death in the U.S. with a 5-year survival rate of 11%. PDAC patients suffer from the lack of effective treatment options largely due to the limited ... -
Environmental Impacts on Behavior and Personality in the Caviomorph Rodent, Octodon degus
(North Dakota State University, 2019)Environmental factors can have large impacts in shaping the way that animals behave. Biotic elements, such as predators and conspecifics that individuals interact with, are two environmental factors that animals may encounter ... -
Establishing and Characterizing Patient-Derived Breast Cancer Cell Lines
(North Dakota State University, 2022)Commercial cancer cell lines have long been extensively used as an important platform to study cancer. They have contributed to a plethora of discoveries in the field of cancer research. However, there are limitations with ... -
The Evaluation of Christmas Bird Counts as an Indicator of Population Trends and Habitat Selection in Blackbirds and Starlings
(North Dakota State University, 2011)Agelaius phoeniceus (red-winged blackbird), Quiscalus quiscula (common grackle), and Sturnus vulgaris (European starling) are three of the most abundant bird species found in North America, and along with Euphagus carolinus ... -
An Evaluation of the Social Perceptions and Biological Efficacy of Unmanned Aircraft Systems for Avian-Agriculture Conflict
(North Dakota State University, 2021)North Dakota sunflower producers face a dilemma when it comes to blackbirds (Icteridae). Migrating flocks produce localized damage to production, which results in some farmers with no bird issues, while others face total ... -
Evidence of Climate Niche Creation in the Northern Great Plains: The History of Invasion, Population Genetics, Competitive Effect, and Long-Term Trends of Invasive Poa Pratensis L.
(North Dakota State University, 2016)Understanding the mechanisms of invasion is critical in order to control an invasive species. Poa pratensis L. (Kentucky bluegrass) is an invasive species that has been present in the northern Great Plains (NGP) for over ... -
The Evolution and Development of a Novel Trait in Sepsidae
(North Dakota State University, 2016)Evolutionary novelty, the appearance of new traits with no existing homology, is central to the adaptive radiation of new species. Novel traits inform our understanding of development and how developmental mechanisms can ... -
Evolution of Intraspecific Genetic Differences Across Heterogeneous Environments and the Potential Impacts on Environmental Restoration
(North Dakota State University, 2020)Genetic differences evolve between seed sources of widely distributed species that can impact restoration success. Using the herbaceous perennial Geum triflorum (Pursh) as a model species, we examine genetic differences ... -
Evolution of the Growth Hormone Receptor: Insights Into the Molecular Basis of the Physiologically Pleiotropic Nature of the Growth Hormone Receptor
(North Dakota State University, 2014)One of the oldest, extant, lineages of vertebrates, the sea lamprey, was used to clarify the evolutionary origin and divergence of the growth hormone receptor (GHR) family. A single, full-length, cDNA, and a second, partial, ... -
Examination of Age at Death Methods and the Effects on Estimation Accuracy when Applied to Computed Tomography Scans and Virtual Models of Mummies
(North Dakota State University, 2015)Three-dimensional (3D) medical imaging provides a method to non-invasively examine the sub-surface structures of a mummified body, particularly the skeleton. The unique nature of both natural and anthropogenic mummification ... -
Expression of HIF-1 Alpha and HIF-1 Beta in Insects Throughout Juvenile Development
(North Dakota State University, 2016)Insects grow exponentially from hatching to adult. This growth is punctuated by periodic molts during which the exoskeleton, including the large airways of the respiratory system, is enlarged and replaced. Major tracheae ... -
Faculty Intention and Faculty Implementation - Do They Align?
(North Dakota State University, 2021)There have been a multitude of calls to reform teaching in undergraduate education. The implementation of active learning in the classroom increases student learning, relative to traditional lecturing. I worked with ... -
Foraging Strategies and Morphometric Characteristics of Bats in North and South Dakota
(North Dakota State University, 2021)Insectivorous bats are an important group for studying links between dietary flexibility and associated impacts on foraging and morphology of individuals from different populations. Since different habitats generally have ... -
From Alcelaphus to Zapus: Conservation of Modern Mammalian Populations
(North Dakota State University, 2015)Conservation priorities are increasingly important in the face of modern human activities. Anthropogenic activities such as deforestation, pollution, and climate change have negative impacts on all vertebrates. In chapter ... -
Growth and Development of Native Range Plants in the Mixed Grass Prairie of Western North Dakota
(North Dakota State University, 1963)This study was initiated to secure quantitative data on growth characteristics of the major species in the mixed grass prairie of western North Dakota; to determine the extent and range in yearly variations in growth ... -
Growth Hormone Mediated Regulation of Osmoregulation in Euryhaline Teleosts
(North Dakota State University, 2014)Within the multitude of fish species that exist on our planet, there are a certain number that possess the unique ability to live in both freshwater (FW) and seawater (SW) environments. This ability, known as euryhalinity, ... -
Influence of Adjacent Uplands and Groundwater on the Hydrology and Invertebrate Community Composition of Seasonal Forest Ponds in North Central Minnesota
(North Dakota State University, 2010)Seasonal ponds are common throughout northern Minnesota's forested areas. Seasonal ponds typically flood due to snow-melt and high precipitation rates in early spring, then dry by mid-late summer. The dynamic hydroperiods ... -
The Influence of Body Size on Metabolic Rates, Scaling, Telomere Dynamics, and Metamorphosis in Megachilid Bees
(North Dakota State University, 2021)Body size is related to many aspects of a bee’s life history including foraging distance and pollination efficiency. Megachile rotundata, and Osmia lignaria are agriculturally important, solitary pollinators. Adult body ... -
Influence of Habitat Characteristics on Amphibian Stress and Reproductive Success in North Dakota
(North Dakota State University, 2021)As amphibians continue to decline, conservation efforts are a necessity in management plans. It is essential to determine the correlation between water characteristics, stress, and habitat alteration with anuran losses. ... -
Interaction and Innovation: The Impacts of Social Factors and Classroom Type on University Biology Instructor Classroom Assessment Decisions
(North Dakota State University, 2020)Efforts to improve university science education continue to emphasize the importance of active learning, including frequent formative assessment and timely feedback that helps students reach desired learning outcomes. Yet, ...