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American White Pelicans Hand Raised Until Fledging And Examination Of The Trematode Infection Bolbophorus Damnificus In These Birds, Treena Lee Ferguson
American White Pelicans Hand Raised Until Fledging And Examination Of The Trematode Infection Bolbophorus Damnificus In These Birds, Treena Lee Ferguson
Theses and Dissertations
Because little is known about juvenile American White Pelicans (Pelecanus erythrorhynchos) this study was conducted to gather more information on disease, general ecology and growth of American White Pelicans from hatching to fledging. In July 2011, American White Pelican regurgitate samples from North and South Dakota sub-colonies were collected/analyzed in preparation for a captive trial. Nutrient content compared between the colonies was found to be significantly different. Concentrations of Immunoglobulin Y and A in regurgitate samples were significantly different between colonies. A captive trial began 29 May 2012 and ended 30 July 2012, in which 16 American White Pelicans were …
Understanding The Exotic Distributions Of Invasive Species, Tyler Evan Schartel
Understanding The Exotic Distributions Of Invasive Species, Tyler Evan Schartel
Theses and Dissertations
Invasive species are organisms whose introduction and spread in exotic ranges result in a multitude of ecological impacts. Understanding the factors that constrain the exotic distributions of invasive species is of considerable interest. Biotic associations formed with taxa in the invaded community may be particularly important in shaping invader distributions. These associations emerge from interactions between the traits of the invasive species and some subset of the traits present in the invaded community. Focusing on how organism traits influence the outcomes of biotic interactions may inform predictions of invader distributions. This kind of trait-based approach may be most easily applied …
The Effects Of Sub-Lethal Chlorine Induced Oxidative Stress On Biofilm Formation And Thermal Resistance Of Salmonella, Janak Dhakal
The Effects Of Sub-Lethal Chlorine Induced Oxidative Stress On Biofilm Formation And Thermal Resistance Of Salmonella, Janak Dhakal
Theses and Dissertations
The effect of sub-lethal chlorine stress on various strains/serotypes of Salmonella on biofilm formation and thermal resistance was studied. The effect of oxidative stress (induced by 150 ppm of chlorine in TSB) on Salmonella biofilm formation on polystyrene and stainless steel surfaces at three temperatures (4°C, 30°C, and room temperature) in nutrient rich (full strength TSB) and nutrient limited conditions (1/10th TSB) was evaluated. On polystyrene surface, chlorine stressed S. Heidelberg (strain ID 72), S. Newport (strain ID 107) and S. Typhimurium (ATCC 14028) formed stronger (P < 0.05) biofilms at 30°C. On stainless steel, the chlorine stressed S. Heidelberg (ATCC 8326) and S. Enteritidis (ATCC 4931) at room temperature formed stronger (P < 0.05) biofilms as compared to the non-stressed control cells. The thermal resistance of short-term (1h) and long-term (27d) chlorine stressed Salmonella Heidelberg and S. Typhimurium were compared with the non-stressed controls at three different temperatures (55°C, 58°C and 61°C) and two growth phases (logarithmic and stationary). The short-term stressed log phase cells (both serotypes) were found to be more sensitive (P< 0.05) to thermal inactivation in TSB. Upon long-term sub-lethal chlorine exposure, Salmonella developed a rugose morphotype on tryptic soy agar at 37°C. The rugose morphotype provided significant thermal protection (P< 0.05) against heat stress as compared to smooth morphotype. In chicken broth, at 55°C, short-term chlorine stressed stationary phase S. Typhimurium displayed a higher D55 value compared to non-stressed cells. The findings from this research reveal that some Salmonella strains have the potential to form stronger biofilms and exhibit higher thermal tolerance upon exposure to sub-lethal chlorine concentration.
Co-Infection Dynamics Of The Tick-Borne Bacteria: Rickettsia Parkeri And "Candidatus Rickettsia Andeanae", Jung Keun Lee
Co-Infection Dynamics Of The Tick-Borne Bacteria: Rickettsia Parkeri And "Candidatus Rickettsia Andeanae", Jung Keun Lee
Theses and Dissertations
Amblyomma maculatum Koch (Acari: Ixodidae) is the primary vector for Rickettsia parkeri which is a causative agent of American Boutonneuse fever. Infection rates of R. parkeri in A. maculatum populations from the United States are approximately 0-56%. The first human clinical case of Rickettsia parkeri infection was reported in 2014 and the patient presented with a febrile illness similar to Rocky Mountain spotted fever but showing milder clinical symptoms. Through 2016, approximately 40 human clinical cases of R. parkeri infection have been reported within southern United States. Amblyomma maculatum may also be infected with a rickettsia of unknown pathogenicity “Candidatus …
Nitrogen And Potassium Management In Container Production Of Musa, Ensete, And Canna And Landscape Performance Of Musa, Ensete, And Musella, Maddox Martin Miller
Nitrogen And Potassium Management In Container Production Of Musa, Ensete, And Canna And Landscape Performance Of Musa, Ensete, And Musella, Maddox Martin Miller
Theses and Dissertations
Two container production studies (nursery area and greenhouse) and a landscape performance study to evaluate bananas and cannas were performed at R. R. Foil Plant Science Research Center on the campus of Mississippi State University. Previous reports determined that there is greater need of K2O fertilization in addition to N for tropical monocot nutrition. Contradictory to previous cultural recommendations for landscapes, it was determined that a N:K2O ratio is not significant for container production of Musa, Ensete, and Canna in pine bark substrate. Nitrogen rate was the most significant variable in the containerized production of Musa, Ensete, and Canna. The …
Conversion Of Industrial Waste And Wastewaters Into Lipids Suitable For Biodiesel Production, Marta Amirsadeghi
Conversion Of Industrial Waste And Wastewaters Into Lipids Suitable For Biodiesel Production, Marta Amirsadeghi
Theses and Dissertations
The potential of oleaginous yeast Rhodotorula glutinis for the sustainable production of biodiesel feedstock via fermentation of lignocellulosic biomass in pulp and paper wastewater as a fermentation media was investigated. The overall objective was to increase the levels of lipid feedstock in oleaginous yeast in order to reduce biodiesel production cost. To meet sustainable production of biodiesel, industrial wastewater and waste lignocellulose biomass were used as cultivation media and carbon source, respectively. Pulp and paper wastewater effluent was selected as a source of water and nutrients for the production of microbial lipids due to its environmental pollution as it creates …
Relationships Of Home, Student, School, And Classroom Variables With Mathematics Achievement, Roslyn B. Miller
Relationships Of Home, Student, School, And Classroom Variables With Mathematics Achievement, Roslyn B. Miller
Theses and Dissertations
This study used the TIMSS 2011 International Database to investigate predictors of 8th-grade mathematics achievement across three countries that represent a wide range of cultures and levels of mathematics achievement: Chinese Taipei, Ghana, and the United States. A review of literature on predictors of mathematics achievement yielded variables in four major contexts of learning—a student’s home, beliefs, school, and classroom. The variables of home that were investigated are home possessions for learning, parent education, and parents’ expectations and involvement in their children’s education. The variables of student beliefs were self-confidence in mathematics and the value of mathematics. The variables of …
Role Of Selenium In Age-Related Degeneration: Selenotranscriptome Hierarchy And Characterization Of Selenoprotein H, Lei Cao
Theses and Dissertations
Selenium (Se) is an essential trace element exerting its biological functions mainly through selenoproteins. Our lab has recently shown a paradoxical role of dietary Se at nutritional levels of intake in the delay of age-related degeneration while reducing longevity in mice carrying humanized telomeres. The first aim of this dissertation was to evaluate the effects of long-term dietary Se deficiency, aging, and sex on selenotranscriptome hierarchy in tissues. Four unique patterns in selenotranscriptomic changes were summarized. First, the responses of selenotranscriptomes to dietary Se deprivation and aging were sexually dimorphic. Second, a few selenoproteins responded to dietary Se deficiency and …
Characterization And Value-Added Utilization Of The Proteins Extracted From The By Products Of Catfish Fillet Processing Plant, Haoran Gao
Theses and Dissertations
Proteins in catfish by-products were extracted by two methods: Alkaline extraction (AE) and salt extraction (SE). Properties of the fish protein isolate (FPI) were measured by protein yield and content, moisture content, SDS-PAGE protein patterns, color and texture profile, and compared with commercial surimi products. Our results showed that catfish frame had higher protein yield and color similarity with commercial products than the head; AE-FPI had higher yield and gel strength than SE-FPI; SDS-PAGE protein patterns of FPI from catfish frame by SE method was comparable with commercial surimi products. Based on the results, further optimization of the recovery yield …
Utilization Of Phosphate Alternatives In Chunked And Formed Deli Ham And Marinated Chicken Breast, Carlos Seth Morris
Utilization Of Phosphate Alternatives In Chunked And Formed Deli Ham And Marinated Chicken Breast, Carlos Seth Morris
Theses and Dissertations
Porcine Semimembranosus muscles were vacuum tumbled with phosphate, without phosphate, fiber dry vinegar, or whey protein concentrate (WPC). Consumers preferred (P<0.05) deli ham with phosphate, without phosphate and WPC over the oat fiber with vinegar treatment. In addition, the phosphate treatment had less cooking loss, (P<0.05) greater bind strength (P<0.05) and more intact slices (P<0.05) than other treatments. In addition, WPC produced ham with a higher (P<0.05) CIE l* and a lower (P<0.05) b* value than other treatments. Consumers preferred (P<0.05) chicken breasts marinated with phosphate with respect to flavor and aroma over the negative phosphate treatment and oat fiber treatments. Chicken breast with phosphate increased pH and had less cooking loss (P<0.05) as compared to chicken with WPC and without phosphate. Results indicated that oat fiber has potential as a phosphate replacer in marinated chicken, and WPC has potential as a phosphate replacer in deli ham.
Strategies For Establishment And Low Input Forage Production Of Southeastern Wildrye, Matthew Thomas Thornton
Strategies For Establishment And Low Input Forage Production Of Southeastern Wildrye, Matthew Thomas Thornton
Theses and Dissertations
Southeastern wildrye (Elymus glabriflorus (Vasey ex L.H. Dewey) Scrib & C.R. Ball) is a relatively new perennial cool-season grass that has shown potential as a forage crop in the Southeastern United States. However, there is a lack of research on this species assessing its agronomic performance. To assess the agronomic performance and it’s tolerance to imazapic field trials were established in Newton and Starkville, MS. A forage production trial included five nitrogen (N) 0, 56, 112, 168, and 224 kg N ha -1 (high input) and five annual clover (low input) treatments. Tolerance to imazapic was assessed with applications of …
Morpho-Physiological Characterization Of Cotton Chromosome Substitution Lines For Abiotic Stresses, Akansha Awasthi
Morpho-Physiological Characterization Of Cotton Chromosome Substitution Lines For Abiotic Stresses, Akansha Awasthi
Theses and Dissertations
The chromosome substitution (CS) lines constitute an important genetic and breeding resources, increasing the genetic diversity of Upland cotton from other alien tetraploid species. Two experiments were conducted to quantify low temperature and drought stress effects during early growth stages in 21 cotton CS-lines with parent, Texas Marker (TM)-1. In Experiment I, plants were grown at optimum (30/22°C) and low (22/14°C) temperatures under optimum water and nutrient conditions. In Experiment II, plants were grown at optimum water and drought conditions. Above- and below-ground growth parameters including several root traits were assessed at 25 days after seeding. CS-lines varied significantly varied …
Governing The Rurals: Food Security And Governance In The 21st Century, Gina Paola Rico Mendez
Governing The Rurals: Food Security And Governance In The 21st Century, Gina Paola Rico Mendez
Theses and Dissertations
This dissertation develops a theory about the consolidation of state legitimacy given transformations in food security. Food security has moved from a national food maximization effort to the provision of food to households and individuals, regardless of the production source. This definitional change was triggered by urbanization, industrialization of agriculture and liberalization of trade. These dynamics altered the formula for balance and control of a country’s territory; as agricultural output moved into a global context, urban centers became less reliant on its periphery for sustenance and thus governments have fewer incentives to provide governance of any quality to rural areas. …
Identification And Genetic Characterization Of Antimicrobial Activities Of Pseudomonas Mississippiensis, A Novel Bacterial Species Isolated From Soybean Rhizosphere, Jiayuan Jia
Theses and Dissertations
An aerobic, Gram-negative, rod shaped and polarlagellated bacterium, designated strain MS586, was isolated from soybean rhizosphere in Mississippi. The taxonomic position of MS586 was determined using a polyphasic approach. Analysis of the housekeeping genes supported the novel position of MS586. The results were also supported by average nucleotide identity (ANI) values. Based on these data, it is proposed that strain MS586 represents a novel species, Pseudomonas mississippiensis, within the genus Pseudomonas. The type strain is MS586. Strain MS586 showed a broad-spectrum of antimicrobial activity against plant pathogenic bacteria and fungi that are economically important in agriculture. Preliminary studies using transposon-based …
Reproductive Ecology Of Greater Sage-Grouse In Strawberry Valley, Utah, Jared Jeffrey Baxter
Reproductive Ecology Of Greater Sage-Grouse In Strawberry Valley, Utah, Jared Jeffrey Baxter
Theses and Dissertations
Greater sage-grouse (Centrocercus urophasianus; hereafter, sage-grouse) are a species of conservation concern in the rangelands of western North America due to their dramatic decline over the last half century. Effective conservation and management of sensitive species requires an understanding of how species respond to management actions. We examined two aspects of the reproductive phases of sage-grouse: nest predation, and habitat selection by female sage-grouse with chicks. In Chapter 1, we developed resource selection functions to assess the influence of mechanical treatments of mountain big sagebrush (Artemisia tridentata vaseyana) on habitat selection by greater sage-grouse with chicks. …
Decision Making In The Backcountry While Carrying A Cellular Phone, Quinn S. Linford
Decision Making In The Backcountry While Carrying A Cellular Phone, Quinn S. Linford
Theses and Dissertations
The purpose of this study was to gain understanding about the influence of technology, specifically cellular phones, on decision making during potentially risky situations in the backcountry. Previous research in this area is contradictory and some studies indicate technology is influencing people to take more risks while others suggest it is not. Further confounding the relationship is the fact that previous studies have found people may be taking more risk in the presence of technology were based largely on respondent perceptions, not observation data. The current study used a scenario-based decision model to examine the difference in decision making between …
Examining Intrinsic Motivation And Holistic Functioning: The Role Of Therapeutic Recreation In Residential Substance Use Treatment, Damien Christopher Cavanaugh
Examining Intrinsic Motivation And Holistic Functioning: The Role Of Therapeutic Recreation In Residential Substance Use Treatment, Damien Christopher Cavanaugh
Theses and Dissertations
This evaluative study examined the impact of recreational therapy interventions on intrinsic motivation and holistic functioning among adults at a substance use treatment facility. West (2001) identified motivation as a key variable in treating substance use disorders, and self-determination theory, specifically intrinsic motivation, provided a useful framework for this study. Intrinsic motivation is grounded in self-determination theory and defines various motivation types and how to increase participants' engagement. Holistic functioning is another tool in assessing a participant's recovery. For this evaluation, four domains were specifically assessed: (a) physical, (b) leisure, (c) social, and (d) daily living functioning. These quality of …
Non-Invasive Real Time, Accurate And Affordable Monitoring Of Hemoglobin And Vital Parameters For Icu Patients, Harsh S. Modi
Non-Invasive Real Time, Accurate And Affordable Monitoring Of Hemoglobin And Vital Parameters For Icu Patients, Harsh S. Modi
Theses and Dissertations
The measurement of hemoglobin concentration (Hb), oxygen consumption (mL and %), and partial pressure of oxygen inside the lungs are vital parameters in early prediction of respiratory diseases such as sepsis, septic shock, acute respiratory distress syndrome (ARDS) etc. The availability of these parameters in real time can play a crucial role in management of modes and parameters of the ventilators. The real time monitoring of patient’s vital signals in intensive care units can reduce the number of blood tests, time and cost spent inside the intensive care units. The medical conditions such as blood loss from surgery or an …
An Investigation Of Ssglux, A Glucosidase Co-Expressed With Cslf6 In Oat (Avena Sativa) And Barley (Hordeum Vulgare), Michael Christopher Gines
An Investigation Of Ssglux, A Glucosidase Co-Expressed With Cslf6 In Oat (Avena Sativa) And Barley (Hordeum Vulgare), Michael Christopher Gines
Theses and Dissertations
Mixed Linkage Glucan (MLG, or (1,3;1,4)-ß-D glucan) is a component of cell walls for major cereal crops and is significant to food and beverage industries. To better understand genetic factors affecting MLG content in oats, this study investigates the presence of glucosidases likely to participate in MLG production. A glucosidase showing co-expression with CslF6—the primary gene responsible for MLG synthesis—could indicate a hand in MLG production by association. Reference genes for expression analysis as well as glucosidase candidates were first selected using in silico methods. In both cases, barley was used as model species because it has abundant public bioinformatic …
Inhibition Of Clostridium Perfringens Growth During Extended Cooling Of Cooked Uncured Roast Turkey And Roast Beef Using A Concentrated Buffered Vinegar Product And A Buffered Vinegar Product, Andrew Mitchell Smith
Inhibition Of Clostridium Perfringens Growth During Extended Cooling Of Cooked Uncured Roast Turkey And Roast Beef Using A Concentrated Buffered Vinegar Product And A Buffered Vinegar Product, Andrew Mitchell Smith
Theses and Dissertations
This research evaluates the effectiveness of a concentrated, buffered vinegar product (CBV) and a simple buffered vinegar product (BV) for controlling Clostridium perfringens outgrowth during extended cooling times of ready-to-eat roast turkey and roast beef respectively. Whole turkey breasts and beef inside rounds were injected with a typical brine, then ground and mixed with CBV (0.0, 2.01, 2.70 and 3.30% wt/wt) or BV (0.0, 1.75, 2.25, and 3.75% wt/wt) and a three-strain C. perfringens spore cocktail to a detectable level of ca. 2-3 log CFU/g. The meat was divided into 10g portions and vacuum packaged and stored frozen until tested. …
Indonesian Women’S Health Determinants, Victoria A. Mcgrady
Indonesian Women’S Health Determinants, Victoria A. Mcgrady
Theses and Dissertations
This study utilized the Indonesian Family Life Survey 5 to investigate the relationships between broad health outcomes and selected biopsychosocial measures. The study population was comprised of 17,480 Indonesian women who ranged in age from 15 years to 103 years with a mean age of 38.27 years. The results of this study showed the biopsychosocial model of health is valid for Indonesian women. Results supported the assumption that the measures of physical health (acute morbidity and medically diagnosed chronic conditions) are significantly correlated with the measures of psychological health (depression, and subjective wellbeing). Results also supported the assumption that biopsychosocial …
Depletion Today Keeps The Apple Away: Effects Of Workplace Resource Processes On Daily Health Behavior And Recovery, Chelsea Alyce Lenoble
Depletion Today Keeps The Apple Away: Effects Of Workplace Resource Processes On Daily Health Behavior And Recovery, Chelsea Alyce Lenoble
Theses and Dissertations
The workplace has become an increasingly demanding environment in which individuals must expend personal resources in order to meet job demands (Hobfoll, 1989). Without ample opportunity to recover these depleted resources, employees risk physical and psychological strains (Meijman & Mulder, 1998). It was proposed that depletion and recovery that occurs throughout the workday would impact recovery activities outside of work. Further, two new constructs were examined as moderators of the proposed relationships: personal energy recovery climate (PERC) and non-work recovery interferences (NWRI). A two-week daily diary study was conducted, with 145 working adults completing four surveys throughout each workday. Resource …
Multiscale Mechanics Of Bone: Examining The Influence Of Genetic Alterations, Brendyn James Miller
Multiscale Mechanics Of Bone: Examining The Influence Of Genetic Alterations, Brendyn James Miller
Theses and Dissertations
This MSc thesis investigates how genetic alterations involved in the synthesis of proteins or in the regulation of tissue remodeling affects the composition, structure and mechanics of bone at the multiscale levels. This was accomplished by performing two mouse model studies. In the first study, bone properties of TIMP-3 knock-out (Timp-3⁻ˊ⁻) mice were examined by performing mechanical testing, µCT analysis, and FTIR analysis. Results demonstrated that the mechanical integrity of the Timp-3⁻ˊ⁻ bone was compromised. Decreased values for the yield and ultimate load, stress capacity, and fracture toughness were observed in both the TIMP-3 deficient bones. These reductions in the …
Developing The Three Dimensional Tumor Model For Melanoma Drug Screening, Guochang Ye
Developing The Three Dimensional Tumor Model For Melanoma Drug Screening, Guochang Ye
Theses and Dissertations
Two-dimensional (2D) Tissue Culture Treated Plastic (TCTP) is widely used for cancer drug screening and has dominated the field for a long time. Compared with traditional two dimensional cell culture, a three dimensional tumor model may able to provide more reliable experimental results related to drug screening and discovery. With the development of nanoparticle chemotherapies, there is a need for ways to better investigate and characterize the effect of the 3D tumor environment. Cerium oxide nanoparticles, Nanoceria, is one of the potential solutions being explored for treating melanoma in the future in combination with conventional chemotherapies. This is attributed to …
Robustness Of The Potential And Flux Landscapes In Fission Yeast Cell Cycle Networks, Xiaosheng Luo
Robustness Of The Potential And Flux Landscapes In Fission Yeast Cell Cycle Networks, Xiaosheng Luo
Theses and Dissertations
Using fission yeast cell cycle as an example, we uncovered that the non-equilibrium network dynamics and global properties are determined by two essential features: the potential landscape and the flux landscape. While potential landscape quantifies the probabilities of different states forming hills and valleys, the flux landscape quantifies the probability fluxes of different loops flowing through states. These two landscapes can be quantified through the decomposition of the dynamics into the detailed balance preserving part and detailed balance breaking non-equilibrium part. While the funneled potential landscape is often crucial for the stability of the single attractor networks, we have uncovered …
Linking Transcriptional And Physiological Responses To High Light Stress In A Wild-Type And A Photomorphogenic Tomato Mutant, Jordyn Radke
Linking Transcriptional And Physiological Responses To High Light Stress In A Wild-Type And A Photomorphogenic Tomato Mutant, Jordyn Radke
Theses and Dissertations
Tomato (Solanum lycopersicon) is the leading vegetable crop worldwide and an important part of a healthy human diet. In this study we used Next-Generation Sequencing, metabolomics and gene ontologies to study the effects of high light stress on the photomorphogenic hp-2dg tomato mutant. Wild-type (cv. ‘Manapal’) and mutant plants were grown for six weeks under low light and transferred to high light for one week. Illumina-based RNA Sequencing was performed and analysis of differential gene expression identified over 650 transcripts that were strongly regulated by light intensity (FC>4, p2,p<0,01). HPLC analysis of tomato leaves showed differential accumulation of phenylpropanoid metabolites such as chlorogenic acid, rutin, and caffeoylglucaric acid which was strongly dependent on genotype and light condition. Our findings show insightful differences between the wildtype and the photomorphogenic mutant as well as novel genes involved in high light adaptation in plants.
The Effect Of Teaching Strategies And Learning Environment On Certification Exam Pass Rates In Dietetic Education, Debra Head
Theses and Dissertations
The obligation for preparing competent graduates begins with an educational experience in an environment that promotes optimal learning. An important outcome of successful health professions education is the passage of the certification exam. The objective of this study was to evaluate learning outcomes and teaching strategies and the effect on certification exam pass rate in dietetic education programs. A non-experimental associational cross-sectional mixed methods design was chosen for the study in order to gather objective data through the use of the previously validated Constructivist Learning Environment Survey. A 30 item electronic survey was administered to faculty in dietetic education programs …
How Public Relations Firms Do Pr For Themselves Through Corporate Social Responsibility, Melissa Elise Steckler
How Public Relations Firms Do Pr For Themselves Through Corporate Social Responsibility, Melissa Elise Steckler
Theses and Dissertations
Corporate social responsibility has become an increasingly important topic within the workplace. This subject continues to garner further attention and scrutiny, especially with regards to public relations firms and their CSR-related engagements because of how practical motivations for charitable giving may blend with the nature of their business. Public relations professionals were interviewed to uncover information regarding each firm's CSR programs and level of engagement, in addition to textual analysis that included the PR firms' websites, social media presence, and what the media has said about the firms' CSR efforts. Findings revealed five cross-company patterns with regard to CSR made …
Overexpression Of Hdac1 Induces Functional Β-Cell Mass, Carrie Draney
Overexpression Of Hdac1 Induces Functional Β-Cell Mass, Carrie Draney
Theses and Dissertations
Type 2 diabetes is a metabolic disorder that results in β-cell dysfunction and ultimate destruction, and leads to impaired glucose homeostasis. High rates of proliferation and differentiation of pancreatic β-cells occurs mostly during neonatal development. However, research shows these mechanisms remain intact as β-cell proliferation has been observed during pregnancy and obesity. We have shown that overexpression of the β-cell transcription factor Nkx6.1 is sufficient to induce β-cell proliferation. Exploration of the transcriptional targets of Nkx6.1 has identified histone deacetylase 1 (HDAC1) as a down-stream target of Nkx6.1. Here we demonstrate that HDAC1 overexpression is sufficient to induce β-cell proliferation, …
Effects Of Parasitism And Mite Control Methods On European Starling Development, Aderinsola Oluwasikemi Odetunde
Effects Of Parasitism And Mite Control Methods On European Starling Development, Aderinsola Oluwasikemi Odetunde
Theses and Dissertations
Certain developmental stressors can lead to developmental trade-offs in young organisms. Hematophagous ectoparasites are a common stressor experienced by European starlings, and we wished to explore what aspects of an ectoparasite infestation drove trade-offs. The first part of this study was to test the hypothesis that blood loss was the sole mediator of trade-offs due to hematophagous ectoparasite infestation. We used nestlings that were exposed to mites in the nests, nestlings in mite-reduced nests experiencing supplementary blood loss, and nestlings in mite reduced nests with no supplementary blood loss. We also used a new heat treatment to reduce mites in …