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Methane Fluxes From The Peninsular Dam Impoundment In Ypsilanti, Mi, Jacob Fagerstrom Jan 2022

Methane Fluxes From The Peninsular Dam Impoundment In Ypsilanti, Mi, Jacob Fagerstrom

Senior Honors Theses and Projects

Dams and reservoirs are a significant source of Methane (CH4), a potent greenhouse gas, due to sediment and organic matter trapping, decomposition, and subsequent anoxia. Most measurements to assess methane production from dams are on large tropical impoundments and reservoirs, with few studies on methane emissions from small, midlatitude impoundments. These small impoundments make up most dams around the world and are underrepresented in the literature. Here, we evaluated methane from low-head dams on a midlatitude river in southeast Michigan. We measured emissions from impoundment and free-flowing sections using static floating chambers and dissolved methane along a longitudinal …


Patterns And Process Of Sandbar Revegetation On The Missouri National Recreational Rive, Amena Begum Ruma Jan 2022

Patterns And Process Of Sandbar Revegetation On The Missouri National Recreational Rive, Amena Begum Ruma

Dissertations and Theses

Decades of flow regulation have reduced sandbar area and recruitment of cottonwood and willow along the Missouri River. Conflicts exist between managing sandbars for habitat (removing vegetation) for threatened sandbar-nesting birds (i.e., Piping Plover) and allowing natural recruitment of early successional riparian woodland (set-aside bars) that may support other species and ecological values. Recent changes in topography, geomorphology, and vegetation were examined on sandbars that have been “set aside” from management within seven reaches of the Missouri National Recreational River (MNRR) in southeastern South Dakota, USA. An existing time series of maps of sandbar landcover, derived from satellite imagery, was …


Exploring The Functionality Of Putative Bop3 Post-Translational Modifications, Liliya Tkachuk, Rebecca Adams Phd Jan 2022

Exploring The Functionality Of Putative Bop3 Post-Translational Modifications, Liliya Tkachuk, Rebecca Adams Phd

[Archive] Belmont University Research Symposium (BURS)

All eukaryotic cells require that transcribed mRNAs undergo export form the nucleus to the cytoplasm where they can be translated into proteins. This process requires a host of proteins which are conserved between the unicellular budding yeast, S. cerevisiae, and humans. During this process, Mex67 and other associated proteins facilitate the mRNA to travel across the nuclear pore complex (NPC), doorways embedded in the nuclear envelope. Upon the exit of mRNA, Mex67 is released and recycled back into the nucleus to provide the export of more mRNA. This release occurs through the action of Dbp5, whose activity is regulated …


Isolation And Characterization Of Novel B. Subtilis Bacteriophages, Johnson Phung, Rebecca Adams Jan 2022

Isolation And Characterization Of Novel B. Subtilis Bacteriophages, Johnson Phung, Rebecca Adams

Science University Research Symposium (SURS)

Bacteriophages are viruses that infect bacteria cells. Bacteria, being the most abundant form of life on the planet, have an estimated ten to a hundred different types of bacteriophages that infect each species. Bacteriophages are everywhere on Earth, but the number of phages that have been identified is only a fraction of what are thought to exist. This project focuses on isolating and identifying phages that infect the bacterium Bacillus subtilis. B subtilis is a decomposition microbe commonly found in the soil. Our first goal was to determine whether the 3 samples of Bacillus subtilis phages that were previously …


What Is The Recorded Economic Cost Of Alien Invasive Fishes Worldwide?, Phillip J. Haubrock, Camille Bernery, Ross N. Cuthbert, Chunlong Liu, Melina Kourantidou, Boris Leroy, Anna J. Turbelin, Andrew M. Kramer, Laura Verbrugge, Christophe Diagne, Franck Courchamp, Rodolphe E. Gozlan Jan 2022

What Is The Recorded Economic Cost Of Alien Invasive Fishes Worldwide?, Phillip J. Haubrock, Camille Bernery, Ross N. Cuthbert, Chunlong Liu, Melina Kourantidou, Boris Leroy, Anna J. Turbelin, Andrew M. Kramer, Laura Verbrugge, Christophe Diagne, Franck Courchamp, Rodolphe E. Gozlan

Integrative Biology Faculty and Staff Publications

Invasive alien fishes have caused pernicious ecological impacts on aquatic ecosystems. However, there has not been a global appraisal of associated economic impacts. Here, we compiled reported economic impacts of invasive alien fishes using the most comprehensive global database of invasion costs (InvaCost). We analyze how fish invasion costs are distributed geographically and temporally, as well as which socioeconomic sectors are most impacted. Fish invasions have caused the economic loss of at least US$32.8 billion globally (2017 value), from only 26 reported species (of 128 known invasive alien fish species). North America had the highest costs (> 99%), followed by …


Analysing Economic Costs Of Invasive Alien Species With The Invacost R Package, Boris Leroy, Andrew M. Kramer, Anne-Charlotte Vaissière, Melina Kourantidou, Franck Courchamp, Christophe Diagne Jan 2022

Analysing Economic Costs Of Invasive Alien Species With The Invacost R Package, Boris Leroy, Andrew M. Kramer, Anne-Charlotte Vaissière, Melina Kourantidou, Franck Courchamp, Christophe Diagne

Integrative Biology Faculty and Staff Publications

  1. The reported costs of invasive alien species from the global database InvaCost are heterogenous and cover different spatio-temporal scales. A standard procedure for aggregating invasive species cost estimates is necessary to ensure the repeatability and comparativeness of studies.

  2. We introduce here the invacost R package, an open-source software designed to query and analyse the InvaCost database. We illustrate this package and its framework with cost data associated with invasive alien invertebrates.

  3. First, the invacost package provides updates of this dynamic database directly in the analytical environment R. Second, it helps understand the heteregoneous nature of monetary cost data for invasive …


The Magnitude, Diversity, And Distribution Of The Economic Costs Of Invasive Terrestrial Invertebrates Worldwide, David Renault, Elena Angulo, Ross N. Cuthbert, Phillip J. Haubrock, César Capinha, Alok Bang, Andrew M. Kramer, Franck Courchamp Jan 2022

The Magnitude, Diversity, And Distribution Of The Economic Costs Of Invasive Terrestrial Invertebrates Worldwide, David Renault, Elena Angulo, Ross N. Cuthbert, Phillip J. Haubrock, César Capinha, Alok Bang, Andrew M. Kramer, Franck Courchamp

Integrative Biology Faculty and Staff Publications

Invasive alien species (IAS) are a major driver of global biodiversity loss, hampering conservation efforts and disrupting ecosystem functions and services. While accumulating evidence documented ecological impacts of IAS across major geographic regions, habitat types and taxonomic groups, appraisals for economic costs remained relatively sparse. This has hindered effective cost-benefit analyses that inform expenditure on management interventions to prevent, control, and eradicate IAS. Terrestrial invertebrates are a particularly pervasive and damaging group of invaders, with many species compromising primary economic sectors such as forestry, agriculture and health. The present study provides synthesised quantifications of economic costs caused by invasive terrestrial …


Biological Invasion Costs Reveal Insufficient Proactive Management Worldwide, Ross N. Cuthbert, Christophe Diagne, Emma J. Hudgins, Anna Turbelin, Danish A. Ahmed, Céline Albert, Thomas W. Bodey, Elizabeta Briski, Franz Essl, Phillip J. Haubrock, Rodolphe E. Gozlan, Natalia Kirichenko, Melina Kourantidou, Andrew M. Kramer, Franck Courchamp Jan 2022

Biological Invasion Costs Reveal Insufficient Proactive Management Worldwide, Ross N. Cuthbert, Christophe Diagne, Emma J. Hudgins, Anna Turbelin, Danish A. Ahmed, Céline Albert, Thomas W. Bodey, Elizabeta Briski, Franz Essl, Phillip J. Haubrock, Rodolphe E. Gozlan, Natalia Kirichenko, Melina Kourantidou, Andrew M. Kramer, Franck Courchamp

Integrative Biology Faculty and Staff Publications

The global increase in biological invasions is placing growing pressure on the management of ecological and economic systems. However, the effectiveness of current management expenditure is difficult to assess due to a lack of standardised measurement across spatial, taxonomic and temporal scales. Furthermore, there is no quantification of the spending difference between pre-invasion (e.g. prevention) and post-invasion (e.g. control) stages, although preventative measures are considered to be the most cost-effective. Here, we use a comprehensive database of invasive alien species economic costs (InvaCost) to synthesise and model the global management costs of biological invasions, in order to provide a better …


Economic Costs Of Biological Invasions In The United States, Jean E. Fantle-Lepczyk, Phillip J. Haubrock, Andrew M. Kramer, Ross N. Cuthbert, Anna J. Turbelin, Robert Crystal-Ornelas, Christophe Diagne, Franck Courchamp Jan 2022

Economic Costs Of Biological Invasions In The United States, Jean E. Fantle-Lepczyk, Phillip J. Haubrock, Andrew M. Kramer, Ross N. Cuthbert, Anna J. Turbelin, Robert Crystal-Ornelas, Christophe Diagne, Franck Courchamp

Integrative Biology Faculty and Staff Publications

The United States has thousands of invasive species, representing a sizable, but unknown burden to the national economy. Given the potential economic repercussions of invasive species, quantifying these costs is of paramount importance both for national economies and invasion management. Here, we used a novel global database of invasion costs (InvaCost) to quantify the overall costs of invasive species in the United States across spatiotemporal, taxonomic, and socioeconomic scales. From 1960 to 2020, reported invasion costs totaled $4.52 trillion (USD 2017). Considering only observed, highly reliable costs, this total cost reached $1.22 trillion with an average annual cost of …


Knowledge Gaps In Economic Costs Of Invasive Alien Fish Worldwide, Phillip J. Haubrock, Camille Bernery, Ross N. Cuthbert, Chunlong Liu, Melina Kourantidou, Boris Leroy, Anna J. Turbelin, Andrew M. Kramer, Laura N.H. Verbrugge, Christophe Diagne, Franck Courchamp, Rodolphe E. Gozlan Jan 2022

Knowledge Gaps In Economic Costs Of Invasive Alien Fish Worldwide, Phillip J. Haubrock, Camille Bernery, Ross N. Cuthbert, Chunlong Liu, Melina Kourantidou, Boris Leroy, Anna J. Turbelin, Andrew M. Kramer, Laura N.H. Verbrugge, Christophe Diagne, Franck Courchamp, Rodolphe E. Gozlan

Integrative Biology Faculty and Staff Publications

Invasive alien fishes have had pernicious ecological and economic impacts on both aquatic ecosystems and human societies. However, a comprehensive and collective assessment of their monetary costs is still lacking. In this study, we collected and reviewed reported data on the economic impacts of invasive alien fishes using InvaCost, the most comprehensive global database of invasion costs. We analysed how total (i.e. both observed and potential/predicted) and observed (i.e. empirically incurred only) costs of fish invasions are distributed geographically and temporally and assessed which socioeconomic sectors are most affected. Fish invasions have potentially caused the economic loss of at least …


Blue Mussel Hybrid Complex Shifts In The Gulf Of Maine Towards A Dominance Of Mytilus Edulis, Daniel Woods Jan 2022

Blue Mussel Hybrid Complex Shifts In The Gulf Of Maine Towards A Dominance Of Mytilus Edulis, Daniel Woods

Honors Program Theses

The Gulf of Maine (GOM) in the United States is the fastest warming body of water in the world. Due to a complex history of glaciation, the GOM has restricted circulation that causes it to function more akin to an enclosed sea. As climate change has disrupted the stable flow of the Gulf Stream, more warm-water currents are entering the GOM at higher frequency. This warming has had a profound impact on the distribution of the blue mussel, Mytilus spp., which inhabits the rocky intertidal habitat within the GOM as the main prey species to a keystone predator. Two sister …


Dataset For: Mapping Fire History And Quantifying Burned Area Through 35 Years Of Prescribed Fire History At An Illinois Tallgrass Prairie Restoration Site Using Gis, Erin G. Rowland-Schaefer, Elizabeth M. Bach, Bill P. Kleiman, Holly P. Jones Jan 2022

Dataset For: Mapping Fire History And Quantifying Burned Area Through 35 Years Of Prescribed Fire History At An Illinois Tallgrass Prairie Restoration Site Using Gis, Erin G. Rowland-Schaefer, Elizabeth M. Bach, Bill P. Kleiman, Holly P. Jones

Research Datasets

Fire was important to pre-colonization prairies. In today’s remnant and reconstructed prairies, managers frequently employ prescribed fire, a historical management practice that limits woody encroachment, suppresses non-native species, and promotes nutrient cycling. However, few long-term prescribed fire spatial datasets are available for study. We used archived images of prescribed fire maps and hand-drawn fire records to generate a geospatial record of the prescribed fire history at Nachusa Grasslands, a combination remnant and restored preserve in northern Illinois. This record contains maps of the prescribed fire history of the preserve across the entirety of its 35-year history. We used the maps …


Analysis Of Hematocrit Levels In Walleye Sander Vitreus From Similar Waterbodies, Alyssa Hauser Jan 2022

Analysis Of Hematocrit Levels In Walleye Sander Vitreus From Similar Waterbodies, Alyssa Hauser

Journal of Earth and Life Science

Walleye Sander vitreus are a popular fish among anglers and hold a prominent place in Minnesotan’s identity as their state fish. Because of this, multiple management practices are used to ensure the continued health of their populations within Minnesota waters. In this study, the process of analyzing hematocrit levels was used to determine if the analysis of hematological parameters could be a useful tool in detecting differences in population health. To evaluate this, blood samples were acquired from age-0 and age-1 fish from two similar lakes and run through a hematocrit centrifuge to separate platelets from plasma to read the …


The Effects Of Diet On Yellow Perch Morphology Throughout Lake Bemidji, Quiana L. Radaich Jan 2022

The Effects Of Diet On Yellow Perch Morphology Throughout Lake Bemidji, Quiana L. Radaich

Journal of Earth and Life Science

Morphology is very important as it looks at the arrangement of an organism’s parts to determine their functionality, development, and how they could have changed through evolution. It is also important for the identification of species as it can show how closely species are related. This study examines if the morphology of yellow perch changes throughout Lake Bemidji. Along with examining a subset of five stomachs for each group (A-F) of yellow perch collected to determine if diet was a driving force behind morphological changes. The data collected in this study suggested that morphology does change throughout Lake Bemidji and …


Identification, Enumeration, And Diversity Determinations For Fungi Enriched On Phthalates As Sole Carbon Source From Riverine Sediments Using Molecular Methods, Anthony M. Vicidomini Jan 2022

Identification, Enumeration, And Diversity Determinations For Fungi Enriched On Phthalates As Sole Carbon Source From Riverine Sediments Using Molecular Methods, Anthony M. Vicidomini

All Capstone Projects

Phthalates are a common chemical compound used as plasticizers in various industries that have been linked to several detrimental effects on health. Due to their widespread use, they have become a common environmental pollutant of soil and water. The persistence and distribution of phthalate esters in the environment has given rise to many microorganisms that are able to incorporate phthalates into various metabolic pathways and degrade them into harmless substances, with fungi being among those that are capable of such degradation of industrial polycyclic aromatic hydrocarbons. In this study, the diversity of fungal communities in response to the presence of …


Multiomic Hypotheses Underlying Behavioral Manipulation Of Camponotus Floridanus Ants By Ophiocordyceps Camponoti-Floridani Fungi, Ian Will Jan 2022

Multiomic Hypotheses Underlying Behavioral Manipulation Of Camponotus Floridanus Ants By Ophiocordyceps Camponoti-Floridani Fungi, Ian Will

Electronic Theses and Dissertations, 2020-2023

Parasitic manipulation of host behavior lies at the intersection of disease, animal behavior, and coevolutionary processes. In many of these interactions, the underpinning biology is brought into sharp focus as they are obligate relationships, under strong selection to bring about specific changes in host behavior that determine if the parasite will transmit or die. However, experimental and molecular techniques to understand these interactions are still developing and identification of the mechanisms of manipulation is a primary goal in the field. As such, we investigated host-parasite interactions between Camponotus floridanus (Florida carpenter ant) and Ophiocordyceps camponoti-floridani (Florida zombie ant fungus) from …


An Expert-Curated Global Database Of Online Newspaper Articles On Spiders And Spider Bites, Stefano Mammola, Laura Segura-Hernández, Et Al. Jan 2022

An Expert-Curated Global Database Of Online Newspaper Articles On Spiders And Spider Bites, Stefano Mammola, Laura Segura-Hernández, Et Al.

School of Biological Sciences: Faculty Publications

Mass media plays an important role in the construction and circulation of risk perception associated with animals. Widely feared groups such as spiders frequently end up in the spotlight of traditional and social media. We compiled an expert-curated global database on the online newspaper coverage of human-spider encounters over the past ten years (2010– 2020). This database includes information about the location of each human-spider encounter reported in the news article and a quantitative characterisation of the content—location, presence of photographs of spiders and bites, number and type of errors, consultation of experts, and a subjective assessment of sensationalism. In …


Elucidation Of Novel And Established Campylobacter Species With Clinical And Agricultural Significance Through Phenotypic, Genotypic, And Taxonomic Investigation, Caoimhe Lynch Jan 2022

Elucidation Of Novel And Established Campylobacter Species With Clinical And Agricultural Significance Through Phenotypic, Genotypic, And Taxonomic Investigation, Caoimhe Lynch

Theses

Campylobacter spp. are well-established human, veterinary and economic pathogens, with a broad host range spanning from terrestrial and marine mammalian, avian and reptilian hosts. The scope of the study includes novel and notorious species within the genus, with reference to zoonotic agents Campylobacter jejuni and Campylobacter coli - the leading cause of human bacterial gastroenteritis in the EU and Ireland, Campylobacter fetus that represents the most common campylobacter causing bacteraemia and two novel species isolated from pigs not described in the literature previously. C. jejuni and C. coli isolates (n = 350) recovered from broiler caecal and neck skin samples, …


Optimising The Carcass Merit Of Irish Beef Cattle Using Genetic And Non-Genetic Information At The Animal And Herd Level, David Kenny Jan 2022

Optimising The Carcass Merit Of Irish Beef Cattle Using Genetic And Non-Genetic Information At The Animal And Herd Level, David Kenny

Theses

Failure of beef carcasses to achieve desirable carcass specifications represent inefficiencies within the supply chain, namely greater carcass processing costs and the inability of the resulting primal cuts to conform to high-value market specifications. Analysis of a representative sample of prime Irish beef cattle conducted in this thesis determined that 59% of cattle fail to achieve the desired carcass specifications of the supply chain at slaughter. The objective of this thesis was to use readily available information to define strategies that could help to reduce this statistic. Firstly, the likelihood of Irish beef carcasses achieving the desired carcass specifications was …


Bottom-Up Effects Of Degradation Outweighs Stabilizing Potential Of Omnivores, Hannah Marie Moore Jan 2022

Bottom-Up Effects Of Degradation Outweighs Stabilizing Potential Of Omnivores, Hannah Marie Moore

Murray State Theses and Dissertations

Anthropogenic activities have led to degradation in streams throughout much of Western North America. In particular, cattle grazing has led to a loss of riparian vegetation resulting in higher water temperatures and an increase in nutrient runoff. The effects of degradation on food quality and quantity for aquatic consumers could have large implications for stream communities. Since omnivores feed at multiple trophic levels, they may be resilient to altered food webs, which may allow them to stabilize communities in degraded environments where resources have been reduced. To test the hypothesis that omnivores positively impact community stability in degraded conditions, I …


Development Of Hemic Neoplasia In The Soft-Shell Clam (Mya Arenaria) Along The East Coast Of The United States, Nicole B. Seitz Jan 2022

Development Of Hemic Neoplasia In The Soft-Shell Clam (Mya Arenaria) Along The East Coast Of The United States, Nicole B. Seitz

West Chester University Master’s Theses

Hemic neoplasia (HN) is a bivalve disease characterized by uncontrolled proliferation of abnormal hemocytes that invade solid tissue, similar to vertebrate leukemia, ultimately leading to death. High disease prevalence has been reported in many bivalve populations, yet disease etiology and development remain minimally understood. In this study, nine East Coast populations of soft-shell clams (Mya arenaria) were evaluated between 2011-2012 to identify environmental and health factors associated with HN. PCA analysis and statistical testing were used to compare data at and between each population based on HN status. The percentage of organisms with terminal stage 4 HN (76-100% …


Effect Of Metal-Containing Nanoparticles On Bacterial Biofilms And On The Microbiome Of Girardia Tigrina, Azar Saikali Jan 2022

Effect Of Metal-Containing Nanoparticles On Bacterial Biofilms And On The Microbiome Of Girardia Tigrina, Azar Saikali

West Chester University Master’s Theses

Anthropogenically-produced nanoparticles are a form of nanotechnology being used in industries including food and textiles. Humans and livestock are frequently exposed to metal-containing nanoparticles (MCNPs), that have been washed into streams and rivers, have been deliberately used in food packaging as antimicrobials, preservatives or for supplementation. The animal microbiome, which consists of a diverse community of microorganisms, provides a number of benefits to the host in terms of nutrition availability, immune support, and can influence behavior. Biofilms of diverse microbes may cause detrimental effects, for instance by causing dental diseases in humans. However, the scientific community has not reached consensus …


Fibropapillomatosis And Chelonid Herpesvirus 5 Dynamics In Juvenile Green Turtles Of The Indian River Lagoon, Florida, Usa, Jake Kelley Jan 2022

Fibropapillomatosis And Chelonid Herpesvirus 5 Dynamics In Juvenile Green Turtles Of The Indian River Lagoon, Florida, Usa, Jake Kelley

Electronic Theses and Dissertations, 2020-2023

Fibropapillomatosis (FP) is a tumor-forming sea turtle disease that mainly affects juvenile green turtles (Chelonia mydas) in coastal foraging sites. The cause of FP is unclear, but likely involves the putative pathogen chelonid herpesvirus 5 (ChHV5). The overall dynamics of this disease are poorly understood, in part due to the difficulty of inferring disease and infection statuses of turtles without evidence of FP. In this study, I investigated the FP disease system in juvenile green turtles of the Indian River Lagoon (IRL), Florida, USA, to better understand disease and pathogen dynamics. First, I developed a hierarchical model for predicting FP …


Factors Related To Species Richness, Endemism, And Conservation Status Of The Herpetofauna (Amphibia And Reptilia) Of Mexican States, Geoffrey R. Smith, Julio A. Lemos-Espinal Jan 2022

Factors Related To Species Richness, Endemism, And Conservation Status Of The Herpetofauna (Amphibia And Reptilia) Of Mexican States, Geoffrey R. Smith, Julio A. Lemos-Espinal

Faculty Publications

No abstract provided.


Final Report Floating Upwelling System Harvest Road Oceans, Robert Michael, Scott Bennett Jan 2022

Final Report Floating Upwelling System Harvest Road Oceans, Robert Michael, Scott Bennett

Fisheries Occasional Publications

A Floating Upwelling System or FLUPSY is a mechanical system for the culture of seed stock during the nursery stage of commercial bivalve production.


A Baraminological Analysis Of The Loons (Gaviiformes: Gaviidae) Reveals Their Holobaraminic Status, Timothy R. Brophy, Mary-Clark Matthews, Alexis Ramerth, Mckayla Guillory Jan 2022

A Baraminological Analysis Of The Loons (Gaviiformes: Gaviidae) Reveals Their Holobaraminic Status, Timothy R. Brophy, Mary-Clark Matthews, Alexis Ramerth, Mckayla Guillory

Faculty Publications and Presentations

No abstract provided.


Parent-Prompted Dysregulation: Do Parents Serve As Cues For Dysregulation In Some Children?, Daniel Lee Jan 2022

Parent-Prompted Dysregulation: Do Parents Serve As Cues For Dysregulation In Some Children?, Daniel Lee

Pitzer Senior Theses

Children occasionally encounter dysregulation when interacting with their parents in relatively neutral or positive scenarios. Given that the cause of dysregulation is usually relational, meaning it is often cued by someone who is seen to have power or control over the person, children could be particularly susceptible to dysregulation in the presence of their parents. However, when examining the existing literature, there appeared to be a lack of research and knowledge concerning this topic, with much of the literature focusing on the effect of child stressors on parental dysregulation. As a result, the term parent-prompted dysregulation was developed to refer …


Characterizing Cellular Stress, Hippocampal Function, And Behavior In A Novel Rat Model Of Alzheimer's Disease, Anne A. Schulman Jan 2022

Characterizing Cellular Stress, Hippocampal Function, And Behavior In A Novel Rat Model Of Alzheimer's Disease, Anne A. Schulman

Honors Theses

Alzheimer’s Disease (AD) is a progressive neurodegenerative disorder that affects over 5 million individuals in the United States alone. While AD is primarily thought of as a disease that destroys neural networks required for memory recall and formation, AD also cause impairment in emotional regulation, cognitive flexibility, and executive function pathways. The cause of AD is unknown; however, the allele ApoE4 has been identified as a risk factor for the onset of AD. ApoE4 provides a valuable opportunity to study AD through animal models. This thesis utilized a human ApoE4 transgenic rat model (hApoE4) to investigate the biological and behavioral …


Modeling Jadera Haematoloma’S Phenotypic Variation In The Context Of Its Developmental Plasticity, Michael C. Yorsz Jan 2022

Modeling Jadera Haematoloma’S Phenotypic Variation In The Context Of Its Developmental Plasticity, Michael C. Yorsz

Honors Theses

Phenotypic plasticity is the ability of an organism to integrate information from environmental cues to inform the development of its phenotype and remains understudied in biology. Models of plasticity are needed because evolution in the presence of plasticity is poorly understood. Jadera haematoloma, a hemimetabolous true bug, is an excellent animal model of plasticity, exhibiting a non-linear plastic response to juvenile nutrition that biases adult development into groups with differences in flight capability, wing shape, and fecundity. However, there is a lack of literature consensus regarding the range of developmental outcomes in the species. Some publications report the presence …


Revisiting Clickers: In-Class Questions Followed By At-Home Reflections Are Associated With Higher Student Performance On Related Exam Questions, Dana L. Kirkwood-Watts, Emily K. Bremers, Emily Robinson, Kathleen R. Brazeal, Brian A. Couch Jan 2022

Revisiting Clickers: In-Class Questions Followed By At-Home Reflections Are Associated With Higher Student Performance On Related Exam Questions, Dana L. Kirkwood-Watts, Emily K. Bremers, Emily Robinson, Kathleen R. Brazeal, Brian A. Couch

School of Biological Sciences: Faculty Publications

Clicker questions are a commonly used active learning technique that stimulates student interactions to help advance understanding of key concepts. Clicker questions are often administered with an initial vote, peer discussion, and a second vote, followed by broader classroom explanation. While clickers can promote learning, some studies have questioned whether students maintain this performance on later exams, highlighting the need to further understand how student answer patterns relate to their understanding of the material and to identify ways for clickers to benefit a broader range of students. Systematic requizzing of concepts during at-home assignments represents a promising mechanism to improve …