Digital Commons Network^™

Can The Color Red Improve Men's Perceived Mate Value? Examining The Interactive Effects Of Facial Masculinity And Color On Female Evaluation Of Potential Mates, Alejandro Trujillo

Honors Theses

We manipulated facial masculinity (masculine-morph/feminine-morph) and color (red/white) through two independent studies—one in-lab at the University of Dayton and one online using Amazon’s MTurk—to examine its effect on social status and attractiveness for men when rated by women. We specifically aimed to see if the color red could serve a compensatory effect for feminine-faced men, who were least likely to be found attractive by women at peak fertility. When paired with red, women rated the masculine and feminine faces higher in social status. Through this increase in social status, the color red was also able to indirectly increase the physical …

The Effect Of Early Life Social Stress On Anxiety-Like Behaviors And Ethanol Drinking In Female Long-Evans Rats, Alyssa Roeckner

Honors Theses

Among women with Alcohol Use Disorders (AUDs), women have higher rates of anxiety-disorders and are more influenced by early life stress compared to men. Preclinical models have been used to study the relationships between early life stress, anxiety-like behavior, and alcohol intake and preference. However, fewer studies have been done with female rats than male rats. To that end, chronic social instability was utilized as a model of early life stress in females. In this model Long Evans rats are placed in different pairs every day, and this has previously produced anxiety-like behavior in female rats (McCormick et al., 2008). …

Phosphorus Adsorption Through Engineered Biochars Produced From Local Waste Products, Peter Ogonek

Honors Theses

Phosphorus contained in agricultural runoff is a major anthropogenic contributor to harmful algal blooms (HABs). Biochars are carbon-based materials produced from the pyrolysis of waste biomass that have the potential to amend soils and remediate inorganic and organic contaminants from water. Engineered biochars tailored to adsorb phosphorus from water could reduce the availability of the nutrient in agricultural runoff, reducing the size and frequency of HABs. This study observed the phosphorus adsorption properties of engineered biochars produced from two source materials, oak sawdust and cornstalk residue, and being unmodified, acid-rinsed, or loaded with magnesium prior to pyrolysis, creating acid-rinsed, unmodified, …

Distribution Of Shell Formation Proteins In Oyster Hemolymph, Hemocytes, And Mantle Tissue, Donald Joseph Kleppel

Honors Theses

The occurrence and composition of L,3-4-dihydroxyphenylalanine-containing proteins (L-DOPA proteins) that participate in oyster shell formation has not been fully determined. It is known that the oyster mantle tissue is primarily responsible for shell formation and recent research has demonstrated the involvement of the hemolymph (blood) and hemocytes (blood cells). L-DOPA proteins are known to aid in the cross linking of shell formation proteins, in turn creating the insoluble organic matrix formed to produce the organic component of the shell. Using the biomarker amino acid L-DOPA, this research focuses on determining the localization of these shell formation proteins in hemocytes, hemolymph, …

Microscopic Analysis Of Rickettsial Co-Infection In The Gulf Coast Tick, Amblyomma Maculatum, Amanda Benton Harper

Honors Theses

Ticks can pass a variety of organisms to humans, resulting in mild flu-like illnesses or more severe diseases that may be fatal if not treated. One group of tick-borne organisms of interest to us are rickettsiae, which cause an illness known as spotted fever rickettsiosis. The ticks that transmit rickettsiae to humans may also pass these organisms to animals and to other ticks, which allows for these organisms to continue to circulate in nature. In some cases, two rickettsiae will utilize the same tick host, and occasionally this presents itself as co-infection of the bacteria. Co-infection can then lead to …

Distribution And Paleobiology Of Hibernation In Fossil Ground-Dwelling Squirrels From The Great Plains, Usa, Randy Sanchez

Honors Theses

Hibernation is a widespread phenomenon present across mammalian taxa, including in many ground-dwelling squirrels (family Sciuridae). Prior work has shown that a hibernation mark can be identified in the ever-growing incisors of these ground squirrels through surface inspection. In this study, we inspected fossil incisors, originating from the Great Plains, from the C.W. Hibbard collection at the University of Michigan for features associated with hibernation marks in modern species. We noted hibernation mark-like features in several fossil ground squirrel incisors from the genera Otospermophilus, “Spermophilus”, and Urocitellus, ranging stratigraphically from the early Pliocene to the late Pleistocene and providing the …

Exploring French Short Stories: Guy De Maupassant's Writing Style And Social Justice, Gielle Kuhn

Honors Theses

This project explores the connection between French author Guy de Maupassant’s pessimist writing style and his observations of 19th century French social classes. A literary analysis of two of Maupassant’s short stories, La Parure and Le Gueux, determines key elements of pessimism, naturalism, realism and an unequal class structure, which discriminates between the peasantry, the working class, and the rich bourgeois. My research aims to demonstrate evidence that Maupassant uses a pessimistic writing style to advocate for social justice.

A Compartmental Model Of Animal Behavior, Saharsh Dass

Honors Theses

Animal behavior is integral to fitness and arises from complex interactions between internal and external factors. An understanding of how external environmental factors drive animal behavior is important for understanding the way organisms adapt to environmental perturbations such as climate change. Glaucous-winged gulls (Larus glaucescens) at Protection Island, Strait of Juan de Fuca, Washington display a variety of behaviors on the colony during the breeding season. The most common gull behaviors are sleeping, preening, and resting. I used a system of four differential equations to predict numbers of sleeping, preening, and resting gulls on the colony as a function of …

Analysis Of Mammalian Carboxypeptidase O Expression Patterns, Christian Bardan

Honors Theses

Carboxypeptidase 0 (CPO) is a protease that cuts acidic amino acids from the carboxy termini of substrate proteins. This study aims to describe the expression patterns of CPO in small mammals. We have sampled tissue from four different species: thirteen-lined ground squirrel, eastern chipmunk, eastern mole, and northern short-tailed shrew. Samples were analyzed via Western blot using two CPO antibodies. Immunoreactive bands likely to be CPO, with molecular weights approximately 42 kDa, were seen predominantly in kidney, liver, and intestinal tissue samples. This suggests CPO could play a specific physiological function in these organs.

Injury-Induced Neuronal Turnover With Zinc Sulfate Affects Cilitated Olfactory Sensory Neurons More Than Microvillous Olfactory Sensory Neurons In The Adult Zebrafish, James Hentig

Honors Theses

Zinc sulfate is a known olfactory toxicant, although its effects on the olfactory epithelium of zebrafish have not been examined. Previous observations utilizing Triton X-100 found selective retention of some olfactory sensory neurons and loss of others. Based on those findings, we hypothesized that the retention of the ability to sense amino acids, detected by microvillous olfactory sensory neurons, and loss of the ability to perceive bile salts, detected by ciliated olfactory sensory neurons, is a universal response to chemical ablation. Fish were treated with zinc sulfate and survived for 2, 5, 10 and 14 days post treatment and processed …

The Ethics Of Environmentalism For The Individual Consumer, Molly Collins

Honors Theses

Climate change harms the well-being of humans. It is the poor choices of individual consumers that contribute to climate change. I argue that it is immoral to cause harm to others, thus climate change is an ethical dilemma for individual consumers. I begin with a pluralistic discussion of harm, before discussing the duties of individuals to make choices that will mitigate the current harms of climate change and the wrong moral assumptions that individuals make regarding their contribution to climate change. I discuss the principles of ethical consumerism, specifically in housing, food, and transportation. Lastly, I argue that climate change …

Missing The Trees For The Forest: The Socioecological Significance Of Dispersed Farmland Trees In Northern Ethiopia, Jacob A. Wall, Travis W. Reynolds

Honors Theses

Scattered trees are prominent features in the agricultural landscape of the Ethiopian highlands. The dry Afromontane forests of the Amhara Region in northern Ethiopia have faced centuries of deforestation - the FAO estimates only 3% of the region is forested today. The remaining landscape has been largely converted into agricultural and grazing lands, with the exception of some limited government-protected lands, as well as thousands of small forest fragments left around Orthodox Churches (“church forests”). But while a growing body of scholarship has highlighted the ecological and cultural importance of church forests and other natural forest fragments, the roles of …

Missing The Trees For The Forest: The Socioecological Significance Of Dispersed Farmland Trees In Northern Ethiopia, Jacob A. Wall

Honors Theses

Scattered trees are prominent features in the agricultural landscape of the Ethiopian highlands. The dry Afromontane forests of the Amhara Region in northern Ethiopia have faced centuries of deforestation - the FAO estimates only 3% of the region is forested today. The remaining landscape has been largely converted into agricultural and grazing lands, with the exception of some limited government-protected lands, as well as thousands of small forest fragments left around Orthodox Churches (“church forests”). But while a growing body of scholarship has highlighted the ecological and cultural importance of church forests and other natural forest fragments, the roles of …

Entering Into Dialogue With Pope Francis' Laudato Si: On Care For Our Common Home, Sarah Jeanne Shimer

Honors Theses

Pope Francis’ 2015 encyclical Laudato Si: On Care for Our Common Home brings together the spheres of science and religion. In this document, Francis puts forth a call for action towards religious and non-religious communities alike to address climate change. The strength of the document lies in the way Francis expresses his call. By drawing on scientific and religious tradition, he situates the encyclical in a broader conversation about the moral obligation for humans to care for the environment. This thesis explores the reception of Laudato Si by religious and environmental communities through political cartoons, written critiques, and personal interviews. …

Pharmaceutical And Personal Care Products Concentrations In The Belgrade Lakes: A Possible Threat To Aquatic Ecosystems And Human Health, Serena Haver

Honors Theses

Pharmaceuticals and active ingredients from personal care products (PPCPs) include prescription and over-the-counter drugs, sunscreen, fragrances, and soaps. Recently researchers have detected PPCPs in surface waters, posing a threat to aquatic biota and human health. These compounds can enter the environment through dumping, direct excretion, or sewage effluent streams. We tested 14 water samples from East Pond, Great Pond, and Long Pond in Maine for the presence of 23 different PPCPs. Of those, we only detected significant levels of caffeine, 1,7-dimethylxanthine, and amphetamine all below 1µg/L. There were no significant differences between any of the three lakes for any of …

Assessing Lakesmart: The Development And Effectiveness Of A Lake Protection Program, Alexa A. E. Junker

Honors Theses

Maine’s nearly 6,000 lakes are a vital resource for the state, generating $6 billion in annual economic activity and sustaining 52,000 jobs. Over the course of the last several decades, this resource has increasingly been threatened by development and related problems, especially nutrient runoff. LakeSmart is a lake protection program designed to stem the flow of nutrient runoff by promoting and rewarding the use lake-friendly landscaping practices.

For this project, I traced the history of LakeSmart from its roots in the Maine Department of Environmental Protection and, through stakeholder interviews and surveys, chronicled its development into the flagship program of …

The Historical Ecology Of Queensland’S Australian Saltwater Crocodile (Crocodylus Porosus), Emily M. Walker

Honors Theses

Human wildlife conflict is a critical aspect of many societies, as it often plays a large role in government decisions. The iconic saltwater Australian crocodile (Crocodylus porosus) is one example of a species that has become the subject of human-wildlife conflict in Queensland, Australia. Decades of intensive hunting in Queensland, beginning at the time of the Second World War, drastically depleted crocodile populations, leading to a federal embargo on crocodile exports in 1972 and their protection in Queensland in 1974. Since protection, populations appear to be recovering with increasing densities in the north and increased sightings along the …

Petrography, Mineralogy, And Geochemistry Of Greenish- And Reddish-Gray Siltstones Straddling The Vertebrate-Defined Permian–Triassic Boundary In South Africa, Jiawen Li

Honors Theses

The Permian–Triassic Mass Extinction (PTME) is considered the largest in Earth’s history, yet the terrestrial response is not well understood. The Karoo Basin, South Africa, hosts abundant exposures of terrestrial deposits that span the Permian– Triassic Boundary (PTB). The terrestrial PTB is defined by a turnover in vertebrate assemblage zones and has been associated with a transition from greenish-gray to reddish-gray siltstone. The current PTME model states that the siltstone color change is a reflection of aridification and eolian deposition, which is believed to represent rapid climate change directly linked with the event. Greenish- and reddish-gray siltstones were collected from …

The Voluntourism Encounter: Affect, Discomfort, And Transformation In Yaxunah, Caroline Tegeler

Honors Theses

Within the massive tourism and travel industry, the niche market of volunteer tourism has risen recently in both notoriety and popularity with its promises of a more conscious form of experiencing the world and its people. I explore in this thesis project the encounter between volunteer tourist and host community by examining the motivations, expectations, and imagined roles and identities of each side of the voluntourism encounter. The volunteer tourism industry frames voluntourism as a path towards a more personal, ethical and responsible tourism, but has created experiences filled with discomfort for tourists in their encounter with the communities in …

Shifting Baselines Of Iconic Marine Species In The Caribbean, Samantha Lovell

Honors Theses

As the degradation of Caribbean coral reefs occurs, memory of past states is lost so the degraded status is used as a standard in management, a phenomenon known as “shifting baselines.” To set restoration targets, marine historical ecology studies are helpful to document baselines of species and understand the past productivity of ecosystems. In this study, I examine the historical ecology of the islands Barbuda, Curaçao, and Montserrat. I analyzed archival materials, including historical maps and other documents from the islands to identify previously abundant or iconic species and understand historical changes. From the archival resources I identified 30 places …

The Effect Of Cyanobacterium Gloeotrichia Echinulata In The Belgrade Lakes, Maine, Harriet T. Rothschild

Honors Theses

Gloeotrichia echinulata is a cyanobacteria species that has been increasingly forming blooms in oligotrophic lakes in the Northeastern United States. The Belgrade Lakes in central Maine have experienced increasing blooms over the past decades. Long Pond and Great Pond in the Belgrade Lakes region are popular locations for summer tourism and year-round residents. Research into G. echinulata is important to the Belgrade community because of potential effects to water quality, public health, and recreation. Studying G. echinulata bloom density throughout the summer and how it may affect the phosphorous cycle, the nitrogen cycle, and the plankton community will help scientists …

Spatial And Temporal Patterns In Irruptive Fringillid Movements, Paul J. Dougherty

Honors Theses

Historic Christmas Bird Count and eBird data indicate that during winter invasions, North American irruptive fringillid species occur in relatively even numbers across latitudes east of the Rocky Mountains. Most boreal breeding species show large southward invasions every other winter, with this pattern typically being strongest across the northern and mid United States. eBird data confirms that many northern fringillids irrupt synchronously, and both datasets also show positive correlations between the winter movements of southern breeding species in many areas. Winter abundance records show negative correlations between northern breeding species and southern breeding species in nearly all monitored areas of …

Don't Know, Do Not Resuscitate: A Principle For The Creation Of The Kingdom Of Ends In The Icu, Griffen Isaac Allen

Honors Theses

In the United States today 20% of all Americans die in Intensive Care Units, or ICUs. These were developed in the 50s, 60s, and 70s to centralize medical resources to help treat critically ill patients with new technologies like ventilators, dialysis, and other tools that are now commonplace. This occurred simultaneously with the emergence of individualistic autonomy, understood as the patient's right to dictate their treatment, as the dominant force in medical ethics. Ostensibly both of these developments would seem beneficial for patients. However, the ultimate result is overly aggressive care that strips patients of their dignity and ensures that …

Environmental Contingency Of Seed-Fungi Interactions In Coexisting Invasive Purple Loosestrife And Native Cattail, Shayla R. Williams

Honors Theses

Purple loosestrife (Lythrum salicaria) is a highly invasive species able to quickly take over entire wetlands, especially after disturbances. Bountiful seed production and a persistent and prolific seed bank play a key role in loosestrife’s ability to invade. However, some competing native species, such as cattails (Typha spp.) have comparable seed production rates but less abundant seed banks, suggesting that there may be a difference in belowground seed survival. I investigated the abundance of loosestrife and cattail seeds in soils at roadside sites relative to above-ground stem densities. Given the importance of fungal pathogens to seed …

The Impact Of Endocrine-Disrupting Chemicals On Wildlife Conservation, Eda Reed

Honors Theses

Endocrine-disrupting chemicals (EDCs), such as those from plastics and pesticides, have been hypothesized to affect wildlife populations. According to the U.S. National Institute of Environmental Health Sciences, EDCs ‘are chemicals that may interfere with the body’s endocrine system and produce adverse developmental, reproductive, neurological, and immune effects in both humans and wildlife.’ A growing number of studies suggest wildlife are being exposed to EDCs, but how EDCs affect wildlife health and wildlife conservation is less well-understood. Through scientific literature analysis and a survey of wildlife conservationists and practitioners, this study aims to determine the current state of knowledge and data …

Are Tax Exemptions For "Churches" A Blessing Or A Curse For Taxpayers?, Hannah Bauman

Honors Theses

This paper focuses on the rules and requirements governing the participation of religious organizations as defined in IRC § 501(c)(3) in the political process. Included in this is a study of historical events and case law both for and against the participation of religious organizations in politics.

The Roles Of Introduced Eucalyptus In The Conservation And Expansion Of Ethiopian Orthodox Church Forests In The Northern Ethiopian Highlands, Janice Liang

Honors Theses

Species of the genus Eucalyptus (common name eucalyptus) are widely planted all across Ethiopia – including on large areas of land previously allocated to food production. In recent decades eucalyptus has also increasingly been planted on lands around and within “church forests,” sacred groves of old-aged Afromontane trees surrounding Ethiopian Orthodox Tewahido churches. These revered holy sites have long been recognized for their cultural values and also for their ecosystem services – including their potential to support species conservation and restoration, as church forests are some of the only remaining sanctuaries for many of Ethiopia’s indigenous and endemic plant and …

The White-Nose Syndrome Transcriptome: Exploring The Putative Fungal Virulence Genes Of Pseudogymnoascus Destructans., Sophia Marie Reeder

Honors Theses

White-nose syndrome (WNS) in North American bats is caused by an invasive cutaneous infection by the psychrophilic fungus Pseudogymnoascus destructans (P. destructans). In a previous study, we used a dual RNA-Seq approach, which allowed us to gain insight into the gene expression of both the host and the pathogen simultaneously, and we observed differences in P. destructans gene expression that suggest host-pathogen interactions that might determine WNS progression. More recently we compared transcriptome-wide changes in gene expression levels in P. destructans grown on and actively infecting the wing of a bat (infecting pathogen) with P. destructans grown in culture (free …

Transformation Of Heroes In Film, Allison Connelly Toner

Honors Theses

Heroes research is not a new field, and it is widely accepted that in order for a hero to be accepted as such, he or she must undertake a journey during which he or she transforms in some marked way. The aim of this research is to understand the nature of that transformation in terms of 24 character strengths. This was achieved by watching the top grossing films of all time adjusted for inflation and coding for the transformation of the protagonists on a 1-5 scale. Ten traits were found to have a mean transformation of 1 point or greater, …

Dognition : The Effect Of Pet Ownership On Cognition In Older Adults, Molly Mcsweeney

Honors Theses

The purpose of the present study was to investigate the effect of pet ownership on cognition in older adults. Previous research has indicated that interactions with pets are associated with improved mental and physical health in humans. We predicted that these benefits of human-pet interactions will extend to expose superior cognitive functioning in cat-owning or dog-owning older adults as compared to older adults who do not own pets. More specifically, we hypothesized that dog-owners would perform significantly better than cat-owners and non-pet owners on cognitive tasks as owning a dog requires exceeding attention, training, and exercise. We tested this effect …