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Articles 1 - 5 of 5
Full-Text Articles in Life Sciences
Plant Toxins Influence Diet Selection And Intestinal Parasites In A Specialist Herbivore, Marcella Rene Fremgen
Plant Toxins Influence Diet Selection And Intestinal Parasites In A Specialist Herbivore, Marcella Rene Fremgen
Boise State University Theses and Dissertations
Herbivores select plants and patches that generally maximize nutrient intake and minimize intake of plant secondary metabolites (PSMs). Protein is important for growth, reproduction and maintenance, but maximizing intake of protein is often limited by concentrations of PSMs that are potentially toxic to herbivores and energetically expensive to process. However, the consequences of ingesting PSM are often dose-dependent. At high doses, PSMs generally have negative physiological effects and are avoided, but some PSMs can be therapeutic against parasites at low doses and could therefore be selected. We used Greater Sage-grouse (Centrocercus urophasianus, hereafter, sage-grouse) to test how PSMs influence …
Two Cryptic Species Within Astragalus Cusickii Delimited Using Molecular Phylogenetic Techniques, Jay Christopher Zimmers
Two Cryptic Species Within Astragalus Cusickii Delimited Using Molecular Phylogenetic Techniques, Jay Christopher Zimmers
Boise State University Theses and Dissertations
Understanding the source of phenotypic variability is a challenge in the biological sciences. Variation in phenotypes is the result of variation in the genetics and environment the organism experiences, but elucidating the relative contribution of these two parameters can pose problems, especially in the field of systematics. Systematists are challenged to classify biological diversity into groups that share common ancestry. Phenotypic variation can be useful to demonstrate common ancestry, but only when the primary contributor to the variation is under strong genetic control, and thus heritable. Cusick’s milkvetch (Astragalus cusickii) is a perennial forb endemic to the intermountain …
The Impact Of Anthropogenic Noise On Northern Saw-Whet Owl (Aegolius Acadius) Hunting Behavior, James Tate Mason
The Impact Of Anthropogenic Noise On Northern Saw-Whet Owl (Aegolius Acadius) Hunting Behavior, James Tate Mason
Boise State University Theses and Dissertations
Anthropogenic noise has increased dramatically worldwide which has negatively impacted wildlife. The effect of noise on acoustically specialized predators has received limited attention. Here I demonstrate that noise generated by a natural gas compressor station degrades the ability of the northern saw-whet owl (Aegolius acadius) to detect and capture prey in the absence of light. The saw-whet owl is considered an acoustic specialist because it exhibits a high degree of ear asymmetry, an adaptation for precise three-dimensional sound localization in birds. I presented 31 wild-caught saw-whet owls with mice (Mus musculus) inside a flight tent under …
Role Of Monocyte Chemoattractant Protein-1 During Liver Regeneration, Stephanie Wyler
Role Of Monocyte Chemoattractant Protein-1 During Liver Regeneration, Stephanie Wyler
Boise State University Theses and Dissertations
Liver regeneration is a complex process that requires the coordinated expression of cytokines and growth factors. One well-studied model of liver regeneration is partial hepatectomy (PH), in which removal of 70% of the liver initiates compensatory hepatocyte proliferation. PH-induced liver regeneration requires the activation of resident macrophages (Kupffer cells), which produce cytokines that drive hepatocyte proliferation. Monocyte chemoattractant protein-1 (MCP-1) is a chemokine that is known to activate macrophages and recruit monocytes during tissue injury. The goal of this study was to determine how MCP-1 contributes to macrophage activation during liver regeneration. Results indicate that hepatic and plasma MCP-1 levels …
Consequences Of Pre-Inoculation With Native Arbuscular Mycorrhizae On Root Colonization And Survival Of Wyoming Big Sagebrush (Artemisia Tridentata Ssp. Wyomingensis) Seedlings After Transplanting, Bill Eugene Davidson
Consequences Of Pre-Inoculation With Native Arbuscular Mycorrhizae On Root Colonization And Survival Of Wyoming Big Sagebrush (Artemisia Tridentata Ssp. Wyomingensis) Seedlings After Transplanting, Bill Eugene Davidson
Boise State University Theses and Dissertations
Inoculation of seedlings with arbuscular mycorrhizal fungi (AMF) is a common practice aimed at improving seedling establishment. The success of this practice largely depends on the ability of the inoculum to multiply and colonize the growing root system after transplanting. These events were investigated in Artemisia tridentata ssp. wyomingensis (Wyoming big sagebrush) seedlings inoculated with native AMF. Seedlings were first grown in a greenhouse in sterilized soil (non-inoculated seedlings) or soil containing a mixture of native mycorrhizae (inoculated seedlings). Three-month old seedlings were transplanted to 24 L pots containing soil from a sagebrush habitat (mesocosm experiments) or to a recently …