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Measuring The Effects Of Selenium Exposure On Batrachochytrium Dendrobatidis (Bd) Growth In Vivo In Larval American Bullfrogs (Rana Catesbeiana)., Taylor Morrison

Honors Thesis

Most amphibians in today’s world are exposed to a variety of environmental stressors. This project’s main objective was to determine any effects of selenium on Batrachochytrium dendrobatidis (Bd) and infection levels in South Dakota amphibians. I selected American bullfrogs (Rana catesbeiana) as they are susceptible to Bd and are found throughout eastern South Dakota. The secondary objective of this project was to measure any impact of Bd and selenium, combined, on growth measures of the frogs. The third objective was to see if survival rates were reduced when amphibians were exposed to Bd and selenium. Tadpoles were collected (n=225) from …

Beating The Heat: The Use Of Coral-Benefitting Bacteria For Heat-Stressed Anemones And Inspiring Future Biologists, Navah Eshraghi

Undergraduate Honors Theses

The warming of ocean temperatures has caused mass coral-bleaching events characterized by the expulsion of vital algal symbionts from coral tissues. However, the possibility of algal reuptake and existence of bacteria that support coral-algal symbiosis are two avenues of potential restoration efforts. Using the sea anemone Exaiptasia diaphana as a model for corals, I tested whether the coral-benefitting bacterium Endozoicomonas montiporae could enhance algal uptake under ambient (27°C) and heat-stressed (32°C) conditions. I then turned acquired results into an article modeled after National Geographic Kids to introduce the experiment to younger ages. While temperature was a larger determinant of algal-uptake …

The Relationship Between Amygdala And Orbitofrontal Cortex Volume In The Context Of Oppositional Defiant Disorder, Rahul Alla

Honors Scholar Theses

Disobedient and rebellious attitude in children is on the rise and this type of behavior is categorized as Oppositional Defiant Disorder (ODD). ODD in children can be identified as a persistent pattern of angry or irritable mood, argumentative or defiant behavior or vindictiveness toward others according to the Diagnostic and Statistical Manual (DSM-5, Fifth Edition) of Mental Disorders.1 Children with ODD typically have difficulty regulating and processing their emotions. Issues with regulating emotions is defined as the process by which individuals “influence which emotions they have, when they have them, and how they experience and express them”.2 Dysregulation of emotions …

Effects Of Leaf Species And Conditioning State Of Fresh Leaves On Colonization By Stream And Pond Macroinvertebrates, Austin R. Hoffman, Erika V. Iyengar

Pacific Faculty Work

Fresh, green leaves are increasing as resources in aquatic ecosystems due to more frequent severe spring and summer storms, but research on allochthonous resources typically uses senescent leaves. We examined macroinvertebrate colonization of green leaves of three native deciduous trees (red maple, red oak, and tulip poplar) over two weeks within both a stream and fishless pond. Leaf colonization varied depending on the taxa of leaves and colonizers, submersion time, and the ecosystem examined. Within the stream, the densities of isopods (Lirceus sp.) and snails (mostly the invasive Potamopyrgus antipodarum) did not vary significantly across leaf species. In contrast, mayflies …

First Record Of The Invasive Chenopodium Aphid, Hayhurstia Atriplicis (Linnaeus, 1761) (Hemiptera: Aphididae), In Colombia, Takumasa Kondo, Roberto Rosero, Jackeline Gaviria

Insecta Mundi

The chenopodium aphid, Hayhurstia atriplicis (Linnaeus, 1761) (Hemiptera: Aphididae), is reported for the first time in Colombia. The aphid was found on the aerial parts of the quinoa plant, Chenopodium quinoa Willd. (Amaranthaceae), especially on the leaves, in five municipalities in the department of Cauca, Colombia. Brief information on its natural enemies, distribution and biology is provided. This is the only aphid in Colombia known to cause malformations on the leaves of quinoa plants. In South America, this aphid has been found previously only in Ecuador, where it was reported for the first time in 2023 based on specimens collected …

Identifying High-Value Tactical Livestock Decisions On A Mixed Enterprise Farm In A Variable Environment, Michael Young, John Young, Ross S. Kingwell, Philip E. Vercoe

Animal production and livestock research articles

Context

Australia is renowned for its climate variation, featuring years with drought and years with floods, which result in significant production and profit variability. Accordingly, to maximise profitability, dryland farming systems need to be dynamically managed in response to unfolding weather conditions.

Aims

The aim of this study is to identify and quantify optimal tactical livestock management for different weather-years.

Methods

This study employed a whole-farm optimisation model to analyse a representative mixed enterprise farm located in the Great Southern region of Western Australia. Using this model, we investigated the economic significance of five key livestock management tactics. These included …

Assessing The Effects Of Cold Storage Regimes Of North American Bombus Gynes, Thuy Tien T. Lindsay, Marcia M. Hagen, Joyce N. Knoblett, Joseph P. Rinehart, Karen M. Kapheim, James P. Strange

Biology Faculty Publications

Bumble bees are the primary commercial pollinators for greenhouse-grown crops and managing them requires insight into the Bombus life cycle. However, some aspects of the life cycle are not fully understood. Once mated, adult Bombus gynes can be stored for a short term at a constant low temperature (CLT). However, survival rates for some species are low during CLT, particularly when storage periods exceed a month. To address this, we tested the hypothesis that Bombus gynes stored in a fluctuating thermal regime (FTR) have increased survival compared to gynes stored in CLT. Specifically, the FTR had a baseline temperature of …

Relationship Between Gut Microbiota And Dementia, Saad Ahmed, Zack Harris, Russell David Levi

Rowan-Virtua Research Day

This paper explores the complex relationship between gut microbiota, dietary habits, and dementia, focusing particularly on Alzheimer's disease (AD). Growing evidence suggests a significant link between the composition of gut bacteria, dietary choices, and susceptibility to dementia. Notably, individuals with dementia demonstrate a noticeable reduction in gut bacteria diversity, highlighting the crucial role of a balanced microbiome in maintaining cognitive health. Conversely, dietary preferences characterized by excessive consumption of processed foods and sugars are associated with an increased risk of dementia, emphasizing the critical influence of diet on shaping gut microbiota and subsequent neurocognitive outcomes. Importantly, dietary interventions featuring a …

The Effect Of Integrated Pest Management On Nutrition Of Bee Collected Pollen, Kaitlyn Bresnahan '25

Biology Student Scholarship

Honey bees are the world’s most commercially valuable pollinators, and they face many threats. The greatest challenge facing honey bees is Varroa mites, parasitic mites that feed on bees’ fat bodies, killing bees and spreading diseases. While chemical treatments are available to stop the spread of mites, these treatments are insecticides, which are not ideal to put in a hive of insects. A popular organic method of mite management is using drone comb. Drone brood is preferentially chosen by mites for ovipositing and development because of its larger size and longer development time, so removing drone brood can drastically reduce …

Rosarugosides A And D From Osa Rugosa Flower Buds: Their Potential Anti-Skin-Aging Effects Intnf-Α-Induced Human Dermal Fibroblasts, Kang Sub Kim, So-Ri Son, Yea Jung Choi, Yejin Kim, Si-Young Ahn, Dae Sik Jang, Sullim Lee

Faculty, Staff and Student Publications

This present study investigated the anti-skin-aging properties of Rosa rugosa. Initially, phenolic compounds were isolated from a hot water extract of Rosa rugosa's flower buds. Through repeated chromatography (column chromatography, MPLC, and prep HPLC), we identified nine phenolic compounds (1-9), including a previously undescribed depside, rosarugoside D (1). The chemical structure of 1 was elucidated via NMR, HR-MS, UV, and hydrolysis. Next, in order to identify bioactive compounds that are effective against TNF-α-induced NHDF cells, we measured intracellular ROS production in samples treated with each of the isolated compounds (1- …

Mental Health And Traumatic Occupational Exposure In Wildland Fire Dispatchers, Robin M. Verble, Rachel Granberg, Seth Pearson, Charlene Rogers, Roman Watson

Biological Sciences Faculty Research & Creative Works

Wildland Fire Dispatchers Play a Key Role in Wildland Fire Management and Response Organization; However, to Date, Wildland Fire Studies Have Largely Focused on the Physical Hazards And, to a Lesser Extent, Mental Health Hazards of Wildland Firefighting Operational Personnel, and Dispatcher Studies Have Primarily Focused on 911 and Police Dispatchers. Studies of Other Dispatchers Have Provided Some Limited Insight into Potential Strains Impacting This Workforce, Including Work-Related Fatigue, Burnout, and Traumatic Exposure. However, the Specific Job Hazards that Are Faced by Wildland Fire Dispatchers Are Poorly Understood. in 2023, We Conducted a Cross-Sectional Survey of 510 Wildland Fire Dispatchers …

The Relationships Between Parental And Youth Physical Activity Behaviors And Perceptions, Bryanna Deangelis

Honors Theses

Physical activity is defined as any bodily movement by skeletal muscles resulting in energy expenditure. Physical activity has multiple different intensity levels, such as light, moderate, and vigorous. It is extremely important for both physical and mental health. The goals of this study are to examine the relationship between parental physical activity (i.e., leisure-time physical activity [moderate-vigorous physical activity]), youth health (i.e., body mass index [BMI], physical activity (moderate-vigorous physical activity), and perception of parental encouragement towards physical activity in a sample of parent-youth (8-14 years old) dyads. Participants will be sent a link via email that will have the …

International Rice Outlook: International Rice Baseline Projections 2023-2033, A. Durand-Morat, W. Mulimbi

AAES Research Reports and Research Bulletins

No abstract provided.

Effects Of Meat Attachment And Social Normative Messaging On Consumer Acceptance Of A Blended Plant-Forward Sausage Patty, Benjamin Garza

Theses & Dissertations

OBJECTIVE, The consumption of red and processed meat in the U.S. diet is rooted in psychological and social determinants. While meat alternatives (e.g., Beyond Beef) have recently entered the food and beverage market, they are not well received by consumers. The purpose of this study was to examine the effect of meat attachment and social normative messages on consumer acceptance of a blended, plant-forward meat product. METHODS. Seventy-one university students (Age: M = 22.14; Gender: Female = 52) between the ages of 18-30 years and without food allergies were recruited. This study utilized a 2 (between-subjects; social normative messages) x …

Evaluating The Effect Of Garden-Based Education On Young Learners’ Preferences For And Willingness To Try Healthy Food, Sierra Gregory

Agricultural Economics and Agribusiness Undergraduate Honors Theses

Childhood obesity in American children has tripled in the last 20 years, and 85% of current healthcare spending is linked to diet-related diseases. The consumption of highly processed foods is linked to these trends and makes up more than half of an average American youths’ diet. Reducing the consumption of highly processed foods in children’s diets can be addressed, in part, by addressing childhood neophobia (willingness to try new foods) associated with whole foods like fruits and vegetables. Influence over behavioral areas such as nutrition and in early childhood is essential to long-term sustained health, and garden-based interventions shows promise …

Use Of Space By Urban Loggerhead Shrikes (Lanius Ludovicianus) As A Window Into Habitat Suitability, Katie A. Maddox, Christopher E. Hill

Biology

Wild animals in urban environments face new challenges that may change how they use space and, at the same time, how they use space provides clues to suitability of habitat: bird territories in desirable areas tend to be smaller and populations denser. Loggerhead Shrikes (Lanius ludovicianus), historically associated with shortgrass habitats such as pasture and shrub steppe, occur widely in urban areas of the southeastern United States. For a complete picture of shrike use of space in urban spaces, we present three measures for a population inhabiting urban areas of Horry County, South Carolina: population density, home range size, and …

Navigating Challenges For Locally Produced Food, Paul Cook

SACAD: Scholarly Activities

There is much interest in locally produced food and the benefits it can have on communities across the state of Kansas. By interviewing city managers, we have identified some of the unique factors and challenges that city officials face when considering their community’s local food systems. Through interview and survey data, we sensed that there is a desire for more local food in communities but lack of resources, lack of policies and the nature of large commodity agriculture in Kansas appear as challenges. Ad-hoc groups coming from schools, churches, and committees at the county level make up the majority of …

Turfgrass Soil Surfactants: Examining Active Ingredients, Application Strategies, And The Structure–Function Relationship In Sand-Based Putting Greens, Daniel O'Brien

Graduate Theses and Dissertations

Soil surfactants, commonly referred to as wetting agents, are a leading water management strategy for golf courses. Non-ionic block copolymers are the most common type of turfgrass soil surfactant. However, differences in the registration process and labeling requirements allow soil surfactants to enter the marketplace accompanied by far-less data compared to other products used on golf courses. This has led to considerable confusion among golf course superintendents. Three primary sources of confusion are: (i) the widely-used marketing terminology of “penetrants” and “retainers” to classify wetting agents; (ii) active ingredients which in some cases are not disclosed at all; and (iii) …

Evaluating The Effects Of Acute Beetroot Supplementation On Oxygen Consumption And Exercise Performance During Submaximal Exercise: A Systematic Review, Madeline L. Kline

2024 Spring Honors Capstone Projects - Archive

Beetroot juice has become a very popular supplement to try to improve cardiorespiratory fitness. Beetroot juice contains nitrates which is converted in body into nitric oxide, a vasodilator. This allows for more blood flow to exercising muscles. Many studies have been conducted to see if beetroot supplementation will affect performance and cardiorespiratory parameters during different types of exercise. However, much of the literature has conflicting results. For this study, seven articles were examined to determine if acute beetroot supplementation will affect oxygen consumption and exercise performance of active individuals during submaximal exercise. Of these studies, most of them did see …

The Effects Of Water Submersion On Skeletal Muscle Activation, Fatigue, And Whole-Body Gas Exchange, Caroline Griffin, Robert J. Shute

Honors Projects

THE EFFECTS OF WATER SUBMERSION ON SKELETAL MUSCLE ACTIVATION, FATIGUE, AND WHOLE-BODY GAS EXCHANGE

C.C. Griffin. Bridgewater College, Bridgewater, VA.

Email: [email protected]

Fatigue of skeletal muscle can be affected by multiple environmental elements. Fatigue threshold can be measured by VO2 max on a cycle ergometer combined with the use of a metabolic cart and Electromyography (EMG) measurements. PURPOSE: The purpose of this experiment is to determine if water submersion affects skeletal muscle activation, fatigue, and whole-body gas exchange. METHODS: Three participants were recruited to participate in a cold and no temperature trial. Participants arrived and baseline vitals and measurements were …

How Variation In Activity Time And Duration At Water Sources Affects Feral Horse Vulnerability To Cougar Predation In Southern Nevada, Katelyn Davies

Undergraduate Honors Capstone Projects

Feral horses have become prominent in the Intermountain West. Approximately 43,000 horses are found in Nevada alone. With increasing numbers, they have become a large portion of ungulate biomass. Thus, it is important to understand their behavior, as they become integrated into western wildlife communities. However, little research has been conducted on the ecology of feral horses, and their relationships with native ungulates, carnivores, and local resources such as water.

To address these concerns, I outlined three objectives: (1) determine if horses changed their water visitation activity times in relation to temperature. As a primarily diurnal species, we were interested …

Chemical-Mediated Mate Attraction In Clover Root Curculio (Sitona Hispidulus F.), A Belowground Pest Of Forage Crops, Kristin Leutgeb

Undergraduate Honors Capstone Projects

Curculionid beetles are well known for their production of semiochemicals, including contact (e.g. cuticular hydrocarbons) and volatile pheromones that mediate conspecific attraction and mating. Clover root curculio (CRC; Sitona hispidulus) in particular is an emergent, soil-borne pest of significant concern to producers of alfalfa and other leguminous crops in the United States. Producers have few control options for CRC and a greater understanding of chemical-mediated attraction in this species can potentially improve the sustainability of its management. To examine which chemical cues are important for affecting the behavior of CRC and whether there are sex-based differences in response, I …

Effects Of Blood Flow Restriction During Acute Multi-Joint Eccentric Exercise On Muscle Recovery, Cody Fisher

All Graduate Reports and Creative Projects, Fall 2023 to Present

Blood flow restriction (BFR) exercise has become an increasingly common modality due to evidence that it may yield positive muscle-related effects from low-intensity exercise. However, eccentric-only exercise in a multi-joint format has not yet been investigated in regard to the BFR influence on muscle recovery characteristics. The purpose of this study was to assess muscle recovery responses via isometric peak force (PF), soreness (i.e., VAS, PPT, PPD), and functional power (i.e., SLHD) following a 5-minute low-load multi-joint eccentric exercise bout with or without blood flow restriction. Thirty participants were randomly assigned into either an eccentric-only (CON) or an eccentric BFR …

Asymmetries In Ncaa Division I Tennis Players Compared To An Athletic Control Group, Elizabeth Cafferty

All Graduate Reports and Creative Projects, Fall 2023 to Present

Limb asymmetries are an expected adaptation to years of training for athletes participating in dominant-sided sports. Previous research on this topic lacks an athletic control group. PURPOSE: To determine the magnitude of upper limb asymmetries in dominant-sided athletes (tennis players) compared to nondominant-sided athletes (cross-country runners). METHODS: Male and female NCAA Division I athletes (10 tennis, 11 cross-country) participated. Dual-energy x-ray absorptiometry (DXA) was used to measure bone mineral content (BMC), bone mineral density (BMD), and lean mass (LM) of the whole body, upper extremities, and forearms. Circumference measurements were taken at mid-biceps and the widest part of the forearms. …

Development And Validation Of A Rule-Based Algorithm To Identify Periodontal Diagnosis Using Structured Electronic Health Record Data, Bunmi Tokede, Ryan Brandon, Chun-Teh Lee, Guo-Hao Lin, Joel White, Alfa Yansane, Xiaoqian Jiang, Elsbeth Kalenderian, Muhammad Walji

Faculty, Staff and Student Publications

AIM: To develop and validate an automated electronic health record (EHR)-based algorithm to suggest a periodontal diagnosis based on the 2017 World Workshop on the Classification of Periodontal Diseases and Conditions.

MATERIALS AND METHODS: Using material published from the 2017 World Workshop, a tool was iteratively developed to suggest a periodontal diagnosis based on clinical data within the EHR. Pertinent clinical data included clinical attachment level (CAL), gingival margin to cemento-enamel junction distance, probing depth, furcation involvement (if present) and mobility. Chart reviews were conducted to confirm the algorithm's ability to accurately extract clinical data from the EHR, and then …

Top-Down Vs Bottom-Up Effects On Predator-Prey Interactions In Aquatic Communities, Catherine Mary Mcclure

All Graduate Theses and Dissertations, Fall 2023 to Present

Ecology is studied at multiple scales to better understand how small changes at the individual level scale up to affect our ecosystems and global systems. These ecological scales include individuals (single organism), populations (group of organisms of the same species), communities (populations of different species interacting with each other), and ecosystems (species interacting with other species and their local environment). The research in this document is focused on the individual, population, and community scale. In particular, this research addresses questions regarding how changes in environmental conditions (i.e., predation and resources) affect species interactions which ultimately affects the composition of ecological …

Mathematical Evaluation Of Population Changes Of Lactobacillus Acidophilus And Bifidobacterium Animalis Ssp. Lactis As Free And Encapsulated Cells In Butter, Rakesh Kaushik, Kritika Gaba, Sanjeev Anand, Gemechis Djira

Dairy Science and Food Science Faculty Publications: 2022 to Present

Growing butter markets, domestically and globally, provide opportunities for value-added variants of butter. Adding probiotics to butter could boosts its bioactivity; however, maintaining probiotic viability during storage is a major challenge. Mathematical analysis of probiotic population changes could help improve our understanding of how probiotics interact with butter and storage conditions. Two strains of probiotics in a 1:1 ratio as free cells or Whey Protein Hydrolysate–Maltodextrin (WPH-MD)-encapsulated cells, Lactobacillus acidophilus ATCC 4356 (LA5) and Bifidobacterium animalis ssp. lactis ATCC 27536 (BB12), were separately mixed into butter at 1% levels. Using analysis of covariance, a mathematical evaluation for probiotic population changes …

Managing Barley Powdery Mildew In The Face Of Fungicide Resistance, Department Of Primary Industries And Regional Development, Western Australia

Grains and other field crops factsheets

Barley powdery mildew populations resistant to some fungicide active ingredients are present in the WA grainbelt. Integrated disease management strategies to manage the disease include growing varieties with improved resistance and strategic use of fungicides.

Live Cattle Assessment, Department Of Primary Industries And Regional Development, Western Australia

Animal production and livestock factsheets

Cattle producers regularly make visual assessments of their cattle. Frame, structure, muscularity, fatness and condition score can all be assessed by visual appraisal. Some traits cannot be assessed visually (for example fertility or marbling). To evaluate the genetic merit of an animal, estimated breeding values (EBVs) can be used.

Water Quality For Livestock, Department Of Primary Industries And Regional Development, Western Australia

Animal production and livestock factsheets

Measure water quality and quantity to effectively plan and monitor water supplies for livestock. If water quality is poor, livestock may drink less than they need, or rarely, may stop drinking altogether. When animals drink less, they will eat less and lose condition, and if they are lactating, their milk production will reduce or cease.

Water quality for livestock in Western Australia is most affected by water salinity, and the presence of water contaminants such as blue-green algae, organic material, heavy metals and chemicals.