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Articles 3331 - 3360 of 39085
Full-Text Articles in Biology
An Analysis Of Targeted Physical Therapy Against Medial Epicondylitis, Rylie Howe
An Analysis Of Targeted Physical Therapy Against Medial Epicondylitis, Rylie Howe
Undergraduate Honors Capstone Projects
Medial epicondylitis, more commonly known as "golfer's elbow", is a musculoskeletal condition involving the common flexor tendon in the forearm at the attachment point of the medial epicondyle of the humerus bone. The repeated use of this tendon causes inflammation, swelling, as well as other types of straining that results in minute damage that accumulates to the overall strain and complications that come with medial epicondylitis. Targeted physical therapy is the overall recommended treatment for this condition. However, there is limited consensus to the most effective interventions. Mixed methods were used to investigate the possibility of the success of certain …
Chemical-Mediated Mate Attraction In Clover Root Curculio (Sitona Hispidulus F.), A Belowground Pest Of Forage Crops, Kristin Leutgeb
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 …
Spatial Ecology Of Mule Deer Migrations From Grand Teton National Park And The Teton Range, Justin K. Schwabedissen
Spatial Ecology Of Mule Deer Migrations From Grand Teton National Park And The Teton Range, Justin K. Schwabedissen
All Graduate Theses and Dissertations, Fall 2023 to Present
The Greater Yellowstone Ecosystem hosts several of the longest, fully intact ungulate migrations remaining in the continental United States. However, expanding development and an increasing human footprint continue to truncate migratory routes. While the endpoints are often a seasonal range on protected lands, these migration corridors frequently cross other jurisdictional boundaries, including large tracts of private or multiple-use lands, with varying levels of protection. Thus, it is critical resource managers understand the dynamics of migratory movements to define population-level corridors and prioritize appropriate conservation strategies. Mule deer in Wyoming have been documented traveling long distances between summer and winter ranges; …
Characterizing The Effect Of Field-Relevant Levels Of Imidacloprid On Respiration In The Common Flesh Fly, Sarcophaga Bullata Parker (Diptera: Sarcophagidae), During Low- And High-Energy Activities., Morgan Regnier Ms ' 24
Characterizing The Effect Of Field-Relevant Levels Of Imidacloprid On Respiration In The Common Flesh Fly, Sarcophaga Bullata Parker (Diptera: Sarcophagidae), During Low- And High-Energy Activities., Morgan Regnier Ms ' 24
All Student Scholarship
Neonicotinoid pesticides are used worldwide due to their effectiveness in protecting crops from pests like aphids, thrips, moths, flies, and beetles. These insecticides are applied on surfaces or absorbed systemically by plants, where insects encounter them through contact or ingestion. While beneficial for agriculture, they also negatively impact nontarget species. Numerous studies have reported the inhibitory effects of sublethal exposure to neonicotinoid-based insecticides on nontarget insects, especially pollinators such as bees, flies, and beetles. While research has demonstrated the toxicity of neonicotinoids, most studies have focused on low-energy activities such as walking or resting. In this research, I examined the …
Utilizing Biomimicry To Design Sustainable Architecture, Virginia Hammond
Utilizing Biomimicry To Design Sustainable Architecture, Virginia Hammond
Architecture Undergraduate Honors Theses
Nature has an integral relationship with architecture and serves as a sustainable role model and inspiration for designers. The process of biomimicry in architecture has the potential to produce more sustainable design solutions and foster a connection between humans and nature. Existing biomimetic design projects have varying strengths and weaknesses as examples of the process. Utilizing guidelines and references from key leaders in biomimetic design consultancy (Biomimicry 3.8), selected case studies are assessed for their ability to demonstrate the benefits of this design strategy. Using these evaluations, the case studies are diagrammed and critiqued to determine how new projects could …
Demography With Drones: Detecting Growth And Survival Of Shrubs With Unoccupied Aerial Systems, Peter J. Olsoy, Andrii Zaiats, Donna M. Delparte, Matthew J. Germino, Bryce A. Richardson, Anna V. Roser, Jennifer S. Forbey, Megan E. Cattau, T. Trevor Caughlin
Demography With Drones: Detecting Growth And Survival Of Shrubs With Unoccupied Aerial Systems, Peter J. Olsoy, Andrii Zaiats, Donna M. Delparte, Matthew J. Germino, Bryce A. Richardson, Anna V. Roser, Jennifer S. Forbey, Megan E. Cattau, T. Trevor Caughlin
Biology Faculty Publications and Presentations
Large-scale disturbances, such as megafires, motivate restoration at equally large extents. Measuring the survival and growth of individual plants plays a key role in current efforts to monitor restoration success. However, the scale of modern restoration (e.g., >10,000 ha) challenges measurements of demographic rates with field data. In this study, we demonstrate how unoccupied aerial system (UAS) flights can provide an efficient solution to the tradeoff of precision and spatial extent in detecting demographic rates from the air. We flew two, sequential UAS flights at two sagebrush (Artemisia tridentata) common gardens to measure the survival and growth of …
Synthesis Of Neoglycoproteins As Potential Biomarkers For Chagas Disease And Cutaneous Leishmaniasis Caused By Leishmania (Viannia) Braziliensis, Eileni Rodriguez Gil
Synthesis Of Neoglycoproteins As Potential Biomarkers For Chagas Disease And Cutaneous Leishmaniasis Caused By Leishmania (Viannia) Braziliensis, Eileni Rodriguez Gil
Open Access Theses & Dissertations
Protozoan parasites are responsible for causing numerous diseases in humans and mammals worldwide. Among them are Chagas disease (CD), caused by the parasite Trypanosoma cruzi (T. cruzi), and tegumentary leishmaniasis (TL), caused by the parasite Leishmania (Viannia). Both diseases coexist in many regions of Latin America, and current hurdles to differentially diagnose them and determine chemotherapy success need to be overcome. CD can be diagnosed by traditional serological tests and polymerase chain reaction (PCR), but disadvantages of these methods are that they may produce false negatives because the antigens used in commercial CD kits are not conserved across all T.cruzi …
Towards Understanding The Function Of An Ets-Like Gene In Nematostella Vectensis: Generation Of A Knockout Mutant Line And A Transgenic Reporter Line, Emily Bullock
Biological Sciences Undergraduate Honors Theses
Due to their unique phylogenic position as sister to Bilateria, Cnidaria are often credited with the utility of allowing for reconstruction of ancestral biology based on characteristics shared with bilaterians and other animals. This factor makes investigation into the nervous systems of cnidarians critical in understanding early neural evolution. Wamides, a class of neuropeptides, have been shown to play a regulatory role in life cycle transitions across many different species. The cnidarian specific Wamide neuropeptide, GLWamide, has previously been identified to play an accelerator role in the metamorphic timing of a specific species of sea anemone, Nematostella vectensis. However, …
Cross-Pollination: Building A Co-Taught Course To Examine Art And Sex Through The Lens Of Botany, Christopher T. Martine, Diamanda A. Zizis, Anna K. Kell
Cross-Pollination: Building A Co-Taught Course To Examine Art And Sex Through The Lens Of Botany, Christopher T. Martine, Diamanda A. Zizis, Anna K. Kell
Faculty Journal Articles
Driven by overlapping interests in plants, art, and diversity in sex expression, Anna Kell (Department of Art and Art History) and Chris Martine (Department of Biology) developed a course that integrates the perspectives of a visual artist and a botanist. Art & Sex Through the Lens of Botany seeks to impart the importance of making connections across disciplines and the value of visual literacy across academic lines. The course introduces foundational concepts in each field and encourages students to integrate and explore these different systems of knowledge and their intersections. In addition to developing fluencies related to both general botany …
Genetic Analysis Of Global Sawfish Populations, Kylie Faulkner
Genetic Analysis Of Global Sawfish Populations, Kylie Faulkner
Honors Theses
Family Pristidae contains five of the most critically endangered elasmobranch species: Anoxypristis cuspidata, Pristis pristis, Pristis pectinata, Pristis zijsron, and Pristis clavata. The species of this family have suffered drastic population declines and range reductions due to historic patterns of overexploitation, accidental entanglement, and habitat disruption. The conservation of this taxa has been historically complicated by taxonomic uncertainty, as similar morphologies across species make them exceedingly difficult to identify. A morphological and genetic comparison of sawfish specimens collected globally was conducted in 2013, which supported a reduction in the number of described species from seven to …
Changes In Zooplankton Community Structure In A Wetland Metacommunity Following Homogenization From Flooding, Kevin Peteroy
Changes In Zooplankton Community Structure In A Wetland Metacommunity Following Homogenization From Flooding, Kevin Peteroy
Theses, Dissertations and Culminating Projects
Wetlands in urban areas provide ecosystem services that benefit the environment and society. Through these services, wetlands are able to help mitigate consequences of human activities such as flooding by increasing permeable surface coverage and contaminant filtering from polluted runoff. One such type of wetland, vernal pools, provide important temporary habitat for many organisms, including myriad zooplankton species. For planktonic organisms, flooding events might be disruptive or allow them to disperse to areas that would be otherwise inaccessible. I observed changing abiotic conditions and zooplankton communities in 20 vernal pools at a wetland in Wayne, New Jersey, USA over a …
Limited Interspecific Gene Flow In The Evolutionary History Of The Icefish Genus Chionodraco, Luca Schiavon, Santiago G. Ceballos, Michael Matschiner, Emiliano Trucchi, Mario La Mesa, Emilio Riginella, Magnus Lucassen, Felix C. Mark, Kevin Bilyk, Rafaella Franch, Andreas Wallberg, Elisa Boscari, Lorenzo Zane, Chiara Papetti
Limited Interspecific Gene Flow In The Evolutionary History Of The Icefish Genus Chionodraco, Luca Schiavon, Santiago G. Ceballos, Michael Matschiner, Emiliano Trucchi, Mario La Mesa, Emilio Riginella, Magnus Lucassen, Felix C. Mark, Kevin Bilyk, Rafaella Franch, Andreas Wallberg, Elisa Boscari, Lorenzo Zane, Chiara Papetti
Department of Biology Faculty Scholarship and Creative Works
Hybridization and introgression are recognized as mechanisms promoting genetic variability during evolutionary radiations. We examined the impact of introgression in the process of speciation, focusing on the Antarctic icefish genus Chionodraco. Our analyses confirmed that the three Chionodraco species (Chionodraco hamatus, Chionodraco myersi, and Chionodraco rastrospinosus) were genetically distinctive, despite signals of past interspecific gene flow between C. hamatus and C. myersi that likely occurred during interglacial periods. However, in this study, no recent hybrids were identified. The lack of contemporary hybridization may be due to life-history traits and the type of marker used in the analysis. Our study emphasizes …
A Survey Of The Biodiversity And Phylogeny Of Pucciniales Collected In Puerto Rico, Catherine Liana Rock
A Survey Of The Biodiversity And Phylogeny Of Pucciniales Collected In Puerto Rico, Catherine Liana Rock
Undergraduate Honors Thesis Collection
Rust fungi (Pucciniales) are a diverse group of fungi belonging to the phylum Basidiomycota. Rusts are obligate biotrophic parasites that infect vascular plants many of which have economic and agricultural importance such as legumes, wheat, and coffee crops (Helfer, 2013, Kolmer et al., 2009). In tropical regions of the world, only about 3-4% of the estimated Pucciniales species diversity is known (Piepenbring et al., 2011). This study aims to determine phylogenetic groupings of Pucciniales collected in Puerto Rico using molecular data and to compare this data to rust species previously identified in Cuba, a closely related tropical location in terms …
Investigating And Modeling The Rate Of Syncytia Formation In Respiratory Syncytial Virus (Rsv), Emily Hope Landwehr
Investigating And Modeling The Rate Of Syncytia Formation In Respiratory Syncytial Virus (Rsv), Emily Hope Landwehr
Undergraduate Honors Thesis Collection
Respiratory syncytial virus (RSV) is a common virus that infects humans and causes a range of symptoms similar to a common cold. Severe cases result in pneumonia and hospitalization. A critical mechanism for RSV spread is lateral cell-cell transmission that can result in the formation of multinucleated syncytia, a single cell containing multiple nuclei. Syncytia formation is known to influence RSV transmission in vitro. Previous studies have contributed to the development of a current viral kinetic model that shows a representation for the progression of viral infections. A limitation to this model is that it does not account for syncytia …
Exploring Immune Related Alterations In Ops/Bin2 Interactions And Investigating Tcp8 Localization Patterns To Enhance Understanding Of The Brassinosteroid Signaling Pathway, Maura Adare Donnelly
Exploring Immune Related Alterations In Ops/Bin2 Interactions And Investigating Tcp8 Localization Patterns To Enhance Understanding Of The Brassinosteroid Signaling Pathway, Maura Adare Donnelly
Undergraduate Honors Thesis Collection
The brassinosteroid (BR) signaling pathway is vital in regulating development and stress response in plants. The hormone BR binds a receptor kinase at the plasma membrane forming a receptor complex, causing an intracellular signal transduction carried out through protein interactions within the pathway. These interactions allow for transcription factors to bind to and regulate BR regulated genes within the nuclei; this is important as their expression is important for growth and development. The project's proteins of interest, including Arabidopsis thaliana proteins OPS and BIN2, along with transcription factors TCP8 and BZR2, are involved in these pathway interactions. Recent research has …
Invasive Shrubs Differentially Alter Autumnal Activity For Three Common Small-Mammal Species, Brian M. Connolly, Chad Zirbel, Carson Keller, Mark Fuka, John L. Orrock
Invasive Shrubs Differentially Alter Autumnal Activity For Three Common Small-Mammal Species, Brian M. Connolly, Chad Zirbel, Carson Keller, Mark Fuka, John L. Orrock
Biology Faculty Scholarship
Seasonal variation in animal activity influences fitness and the intensity of ecological interactions (e.g., competition, predation), yet aspects of global change in the Anthropocene may catalyze shifts in seasonal activity. Invasive plants are components of global change and can modify animal daily activity, but their influence on animal seasonal activity is less understood. We examined how invasive woody shrubs (Autumn olive [Elaeagnus umbellata] and Amur honeysuckle [Lonicera maackii]) affect seasonal activity of three common small-mammal species by coupling experimental shrub removal with autumnal camera trapping for two consecutive years at six paired forest sites (total 12 …
Determining The Roles Of Whib-Like Transcription Factors In Mycobacterium Abscessus, Charity Lynn Mcmanaman
Determining The Roles Of Whib-Like Transcription Factors In Mycobacterium Abscessus, Charity Lynn Mcmanaman
Legacy Theses & Dissertations (2009 - 2024)
Mycobacterium abscessus is a non-tuberculous mycobacteria that causes lung infections or skin and soft tissue infections. M. abscessus is innately resistant to antibiotics, requiring a long multi-antibiotic treatment regimen, with a low 45% cure rate for lung infections. The WhiB-like transcription factors are limited to the actinomycete class, which includes Mycobacteria. These proteins regulate multiple cellular processes, including growth and division, responses to oxidative, nitrosative or pH stress, and antibiotic resistance. Our work describes three WhiB-like transcription factors: WhiB7, which regulates antibiotic resistance, WhiB2, with a role in cell division, and Mab1756, an unstudied regulator similar to WhiB2. We used …
Comparative Population Genomics Of Bloodstream-Derived Staphylococcus Aureus From Disparate Geographic Origins In The United States, Milan Pfister
Comparative Population Genomics Of Bloodstream-Derived Staphylococcus Aureus From Disparate Geographic Origins In The United States, Milan Pfister
Legacy Theses & Dissertations (2009 - 2024)
Staphylococcus aureus is a commensal and an opportunistic pathogen that causes a variety of diseases in humans, from minor skin and soft tissue infections to life-threatening invasive diseases. The emergence and spread of multidrug-resistant and methicillin-resistant S. aureus (MRSA) complicate treatment options, which can lead to significant morbidity and mortality of patients. In this study, we compared the clonal lineages and genomic features of bloodstream-derived S. aureus populations from different locations. We leveraged 957 previously published genomes derived from bloodstream infections across six hospitals located in Illinois, Minnesota, Missouri, New Hampshire, and New York, USA. We carried out pan-genome analysis, …
Searching For Regulators Of Catalase Activity Using Enzymatic Screens, Aram Joseph Alaxanian
Searching For Regulators Of Catalase Activity Using Enzymatic Screens, Aram Joseph Alaxanian
Legacy Theses & Dissertations (2009 - 2024)
Catalase is found in a plethora of organisms and plays a crucial role in safeguarding cells against oxidative stress-induced damage to proteins, RNA, and DNA. Catalase catalyzed the decomposition of hydrogen peroxide (H2O2) into oxygen and water. Deficiencies in catalase have been linked to pathological conditions such as Diabetes, Alzheimer's, and Cancer, underscoring its significance in cellular health. In bacteria like Escherichia coli, catalase is encoded by two genes, KatG and KatE, both subject to regulation through transcription, translation, and post-translational modification. Our study focused on assessing the catalase activity of mutants lacking stress response genes (e.g., lexA, soxR, soxS, …
Senescence And The Senescence Associated Secretory Phenotype In Salivary Hypofunction, Quetsia Jean-Baptiste
Senescence And The Senescence Associated Secretory Phenotype In Salivary Hypofunction, Quetsia Jean-Baptiste
Legacy Theses & Dissertations (2009 - 2024)
Cellular senescence, a triggered permanent cycle arrest, occurs with aging and is a component of many aging-related diseases. Triggers for senescence may include pathways involving DNA damage, telomere dysfunction, release of reactive oxygen species, and other additional internal/external stimuli. Senescence can have a positive effect as it plays a fundamental role in wound healing, tumor suppression, and promoting embryonic development. However, a prolonged consequence of senescence is the production of the senescence-associated secretory phenotype (SASP), in which the cell secretes pro-inflammatory and pro-tumorigenic factors that can have adverse effects on surrounding cells, which is known as the bystander effect. Eliminating …
Interplay Between Cellular Stress Mechanisms And Immune Responses In Restricting Zika Virus Infection, Pheonah Badu
Interplay Between Cellular Stress Mechanisms And Immune Responses In Restricting Zika Virus Infection, Pheonah Badu
Legacy Theses & Dissertations (2009 - 2024)
Flavivirus infections pose significant global health risks, often leading to serious neurological and congenital complications such as microcephaly. These viruses induce complex cellular stress responses pathways encompassing the Unfolded Protein Response (UPR), Integrated Stress Response (ISR), autophagy, apoptosis, and the antiviral immune response, which dictate cell fate by either promoting survival to combat virus-induced damage or initiating cell death under prolonged stress. Despite the antagonizing functions, flaviviruses employ various subversion strategies, facilitated by viral proteins, to ensure successful infections even in the presence of activated cellular responses. Recent studies highlight dynamic interactions among stress response pathways during infection, emphasizing the …
Testing The Impact Of Actinomyces Naeslundii On The Proliferation Dynamics Of Corynebacterium And Revealing The Prescence Or Absence Of Inhibitory Properties, Quintin Hodge
ALL - Honors Theses
The gram-positive bacterium Actinomyces naeslundii is a core member of the oral microbiome and has been associated with states of health. In early human life, researchers unraveled the involvement of several different taxa of microbes present within the oral cavity in contributing to diseases including tooth destruction. Periodontitis is a prevalent oral disease that is proposed to be caused by dysbiosis, which is characterized by microbial shifts within the bacterial community resulting from changes in relative microbial abundance and spatial organization in the dental plaque microbiome, causing immense gum pain and inflammation. Corynebacterium matruchotii is also a gram-positive bacterium like …
Bilateral Asymmetry In The First Metacarpal: The Influence Of Handedness In Humans And Non-Human Primates, Lucyna A. Bowland
Bilateral Asymmetry In The First Metacarpal: The Influence Of Handedness In Humans And Non-Human Primates, Lucyna A. Bowland
Graduate Theses and Dissertations
Muscle attachment sites (entheses) are often used to infer soft tissue anatomy and reconstruct behaviors within skeletal populations, but there remains a significant debate about whether and to what degree muscle use is accurately reflected in bony morphology. One of the most difficult problems in establishing the relationship between variation in muscle use and entheseal development is the inability to exclude a variety of external factors thought to influence enthesis development, including age, sex, body mass, and activity patterns. One way around this is to take advantage of the fact that humans are handed (preferentially using one hand over another, …
Season Of Grazing Interacts With Soil Texture, Selecting For Associations Of Biocrust Morphogroups, Lea A. Condon, Roger Rosentreter, Kari E. Veblen, Peter S. Coates
Season Of Grazing Interacts With Soil Texture, Selecting For Associations Of Biocrust Morphogroups, Lea A. Condon, Roger Rosentreter, Kari E. Veblen, Peter S. Coates
Biology Faculty Publications and Presentations
Livestock grazing, a widespread land use in semi-arid systems, is often placed in opposition to the perpetuation of biological soil crusts (“biocrusts”: lichens, mosses, and algal crusts including cyanobacteria) that live on the soil surface and provide ecosystem functions. The composition of biocrusts and vascular plants varies with climate, soils, and disturbance. In general, ruderal mosses and light algal crusts make up greater proportions of biocrusts in the presence of disturbance, although morphogroups of biocrusts respond differently to various disturbances. It is unknown if there are scenarios under which grazing can occur and ruderal components of biocrust could be maintained. …
Testing Functional Homology Of The Lga2 And Rga2 Genes Of Sporisorium Reilianum In Ustilago Maydis, Joshua Thomas
Testing Functional Homology Of The Lga2 And Rga2 Genes Of Sporisorium Reilianum In Ustilago Maydis, Joshua Thomas
College of Arts & Sciences Senior Theses
Ustilago maydis, a basidiomycete fungus, infects corn and displays dimorphism, transitioning between nonpathogenic and pathogenic stages. Its life cycle involves mating of haploids with different alleles, resulting in the formation of galls/tumors filled with teliospores. The a1 and a2 alleles regulate pheromone recognition and mating. The lga2 and rga2 genes in the a2 allele are crucial for uniparental mitochondrial inheritance. Sporisorium reilianum, a related fungus, has homologs of lga2 and rga2 with U. maydis. To test the functional homology of the S. reilianum genes, protoplasts of U. maydis strains deleted for lga2 or lga2 and rga2 were transformed …
Intra And Interspecific Competition Via Allelopathy Among Native And Non-Native Plants, Mimi Byrne, Robert Warren
Intra And Interspecific Competition Via Allelopathy Among Native And Non-Native Plants, Mimi Byrne, Robert Warren
Biology Theses
Invasive non- native species success often is attributed to their competitive superiority, potentially through allelochemical inhibition (allelopathy) of native species, as suggested by the novel weapons hypothesis. However, it is also possible that non- native species are able to be successful through decreased intraspecific competition. Decreased intraspecific competition could be attributed to a lack of genetic variation creating less variable allelopathic effects. I predict that if non- native species follow the novel weapons hypothesis, their allelochemicals will restrict more biomass and give them a competitive edge compared to native species. Additionally, I predict that if non- native species have lower …
Revealing Nitrate Uptake And Dispersion Dynamics Using High-Frequency Sensors And Two-Dimensional Modeling In A Large River System, Amirreza Zarnaghsh, Michelle Kelly, Amy Burgin, Admin Husic
Revealing Nitrate Uptake And Dispersion Dynamics Using High-Frequency Sensors And Two-Dimensional Modeling In A Large River System, Amirreza Zarnaghsh, Michelle Kelly, Amy Burgin, Admin Husic
Michigan Tech Publications
Nitrate pollution of water bodies is a critical issue in many parts of the world because of its negative effects on aquatic ecosystem and human health. Effective management of pollution, such as the continuous or instantaneous release from point-sources, requires an understanding – with high spatial and temporal resolution – of how nitrate is dispersed and cycled within rivers. Nitrate sensing data show promise for this purpose, but their integration into numerical models is scarce; thus, questions remain regarding the necessary spatial grid size and temporal resolution required to resolve sensor readings. In this study, we developed an unsteady two-dimensional …
A Phylogenetic Analysis Of The Population Dynamics Of A Captive Colony Of Diploptera Punctata., Nick Peterson
A Phylogenetic Analysis Of The Population Dynamics Of A Captive Colony Of Diploptera Punctata., Nick Peterson
Theses/Capstones/Creative Projects
The unique milk production of Diploptera punctata makes this species a promising model species in entomology for studying the evolution of milk production and for insect endocrinology. Despite this, the genetic diversity of captive populations of the species is not well studied. To better evaluate the captive diversity and population dynamics of Diploptera punctata at UNO we extracted the DNA of 20 random individuals and amplified their DNA using 4 different primers before cleaning the amplified products and sequencing the genes of the samples for use in both individual and concatenated phylogenetic trees. Our results indicate the UNO colony of …
The Anti-Diabetic Drug Metformin Disrupts Feeding And Sleeping Behaviors In Drosophila Melanogaster., Lucas Fitzgerald
The Anti-Diabetic Drug Metformin Disrupts Feeding And Sleeping Behaviors In Drosophila Melanogaster., Lucas Fitzgerald
College of Arts & Sciences Senior Theses
Dimethylbiguanide, also known as metformin, is the single most prescribed oral treatment for non-insulin dependent diabetes mellitus, or type 2 diabetes, in Western countries. The primary mechanism of action that metformin acts through is the activation of AMP kinase, an important regulator of energy homeostasis. While the anti-diabetic effects of metformin are well documented, its effects on feeding and sleeping behaviors are not well characterized. Using the model organism Drosophila melanogaster, the mean daily quantity of food consumed was measured and compared between groups treated with several dosages of metformin. Feeding interactions such as meal frequency and length were …
The Influence Of Researcher Disturbance On Raccoon Predation Of American Alligator Nests, Clarissa Tuten
The Influence Of Researcher Disturbance On Raccoon Predation Of American Alligator Nests, Clarissa Tuten
Electronic Theses and Dissertations
Raccoons (Procyon lotor) are a dominant predator of American alligator (Alligator mississippiensis) nests in the southeastern United States, using a combination of olfactory, visual, and tactile cues to identify nest locations. Studies on alligator nesting ecology typically require researchers to create paths through marsh habitat, potentially introducing visual and olfactory cues raccoons may use to locate nests. The purpose of this study was to evaluate the effect of human visitation to alligator nests on the frequency of raccoon nest predation at two sites in coastal South Carolina, Tom Yawkey Wildlife Center (TYWC) and Santee Coastal Reserve (SCR). We hypothesized that …