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Rhizosphere-Competent Actinobacterial Isolates With Acc Deaminase Activity Alleviate Salt Stress In Tomato Plants In The Uae, Alaa Ahmed Abbas Elbadawi Jun 2022

Rhizosphere-Competent Actinobacterial Isolates With Acc Deaminase Activity Alleviate Salt Stress In Tomato Plants In The Uae, Alaa Ahmed Abbas Elbadawi

Biology Theses

Tomato (Solanum lycopersicum) is one of the most popular vegetables in the world, including the United Arab Emirates (UAE). Salinity is a global menace to plant growth and development, causing significant economic losses to tomato and other crop plants. It is well-known that 1-aminocyclopropane-1-carboxylic acid (ACC) deaminase (ACCD) can increase plant tolerance to environmental stresses. This can be attributed to the increased activity of the enzyme ACCD, which breaks down ACC [the immediate precursor of ethylene (ET)] to ammonia and α-ketobutyrate, to lower the overproduction of ET levels in planta and to reduce the damages caused …

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Optimization Of Palmitic Acid Production In Chloroidium Sp. Utex 3007 As A Sustainable Source Of Palm Oil Alternative, Amnah Salem Alzahmi Jun 2022

Optimization Of Palmitic Acid Production In Chloroidium Sp. Utex 3007 As A Sustainable Source Of Palm Oil Alternative, Amnah Salem Alzahmi

Theses

The increase in palm oil consumption and production has resulted in removing up to 90% of trees in some tropical forests. The green microalgae Chloroidium sp. UTEX 3007 can be an alternative sustainable source of palm oil due to its high palmitic acid content. The objective of this study was to generate a mutant Chloroidium population that is capable of producing and accumulating elevated levels of palmitic acid and to characterize the obtained populations’ lipid contents. The palmitic acid production optimization in Chloroidium sp. UTEX 3007 was conducted via a workflow of ultraviolet (UV) mutagenesis and sorting of high-lipid producing …

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Noxious Cellular Injury Triggers An Oxidative Stress Gene Response, Shawyun Khoshneviszadeh May 2022

Noxious Cellular Injury Triggers An Oxidative Stress Gene Response, Shawyun Khoshneviszadeh

Master of Science in Integrative Biology Theses

Wound and regeneration involves a series of complex processes that can induce oxidative stress by elevating intracellular reactive oxygen species (ROS) levels. In this study, we used RNA-seq and qPCR to examine the molecular signature of Human Embryonic Kidney cells (HEK-293T) stimulated with Crotalus atrox (CA) venom. NGS data was assembled and annotated utilizing the Illumina paired-end RNA-seq approach with software packages HISAT2 and StringTie. Results showed 243 genes were differentially expressed (106 upregulated, 137 downregulated) between CA venom stimulated and non-stimulated cells (p<0.05). HEK-293T stimulated with CA venom for 4 hours showed an increase in the expression of oxidative stress response genes (e.g., TOMM6, EGR (1,2,3), HSP70 (1A, 1B), SPRY4, ETV5, and EMP1) (Fold-Change (fc) >2.0). Significantly downregulated genes were associated with many novel transcripts/proteins such as AC117378, AD000671, and AC023509. …

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Sierra Nevada Mixed-Conifer Regeneration Response To Repeated Burning Varies By Species, Carolina J. May May 2022

Sierra Nevada Mixed-Conifer Regeneration Response To Repeated Burning Varies By Species, Carolina J. May

Biology ETDs

Fire-exclusion has acted as a major perturbation on dry conifer forests, increasing tree density and, in mixed-conifer forests, the dominance of shade-tolerant species. Restoration efforts aim to reverse these effects by reducing stand density, restoring relative proportions of tree species, and reintroducing recurrent fire, but the long-term effects of repeated burning on tree regeneration have not been quantified. We analyzed two decades of seedling and overstory data from the Teakettle Experimental Forest in the southern Sierra Nevada to determine how thinning and repeated burning affect seedling establishment and overstory recruitment. Across treatments, pine seedling densities remained much lower than shade-tolerant …

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Understanding The Influence Of Individual-Level Sources Of Pathology Variation On Neuroimaging Measures Of Alzheimer Disease, Austin Andrew Mccullough May 2022

Understanding The Influence Of Individual-Level Sources Of Pathology Variation On Neuroimaging Measures Of Alzheimer Disease, Austin Andrew Mccullough

Arts & Sciences Graduate Student Theses and Dissertations

The overall goal of this dissertation is to gain a better understanding of how current Alzheimer disease pathologic progression models interact with sources of individual-level variation in pathology to influence overall disease progression in a clinically meaningful way. Many sources of variation, both internal (e.g., genetic mutations, heterogeneity of tau pathology) and external (e.g., diet and exercise, sleep quality), are known to influence disease progression and symptom onset in AD. With the advent of therapies that have shown successful reduction of amyloid load in trials and the rapid progression of anti-tau therapies, we hypothesize that a better understanding of how …

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The Nature Of Phenotypes: Provoking And Measuring The Dynamic Processes Of Swarm Expansion, Predation, And Antibiotic Resistance In Myxococcus Xanthus, Linnea Judith Ritchie May 2022

The Nature Of Phenotypes: Provoking And Measuring The Dynamic Processes Of Swarm Expansion, Predation, And Antibiotic Resistance In Myxococcus Xanthus, Linnea Judith Ritchie

Dissertations - ALL

The question of how genotype affects phenotype has fascinated and puzzled scientists for generations. Regardless of organism, the correlation between observation and underlying condition is necessary for scientists to understand the world around us. Myxococcus xanthus, a fascinating organism with a large genome (7,314 genes), is known for complex social behaviors and is an excellent model system for the study of this relationship. Upon starvation, M. xanthus cells condense into large multicellular aggregates to await renewed nutrient availability. M. xanthus cells swarm together on surfaces as a predatory biofilm, lysing and killing prey as a singular unit. During predation, swarms …

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A Review Of Current Methods In Avian Dietary Analysis And Their Integrated Application To Characterize The Trophic Niche Of Louisiana Waterthrush (Parkesia Motacilla)., Brandon Hoenig May 2022

A Review Of Current Methods In Avian Dietary Analysis And Their Integrated Application To Characterize The Trophic Niche Of Louisiana Waterthrush (Parkesia Motacilla)., Brandon Hoenig

Electronic Theses and Dissertations

Characterizing a species’ dietary composition presents an avenue to understand many facets of its ecological niche and can provide essential information for the species’ long-term conservation. To date, the vast majority of diet studies have relied on direct identification of prey during foraging observations or from diet samples to characterize the dietary habits of birds. However, advancements in laboratory-based approaches have revolutionized the field of trophic ecology by allowing researchers to indirectly infer dietary habits with higher resolution across greater time scales. Here, I apply two of these laboratory-based techniques, namely DNA metabarcoding and stable isotope analysis, to characterize the …

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Procedures For Genetic Modification Of Miscanthus X Giganteus, A Biomass Crop, Anjali Arpan May 2022

Procedures For Genetic Modification Of Miscanthus X Giganteus, A Biomass Crop, Anjali Arpan

Theses and Dissertations

Development of genetic improvement procedures for the bioenergy crop, Miscanthus × giganteus (M×g; triploid), are desired for trait improvement. Agrobacterium tumefaciens has been used in other Miscanthus spp. for genetic improvement, but not in M×g, nor have more than a few genes been introduced at a given time. Transformation procedures for M×g were developed; studies included use of A.tumefaciens (strain LBA4404) and A. rhizogenes (strain A4) for introduction of seven genes isolated (by other researchers) from Sorghum bicolor involved in sorgoleone biosynthesis (an allelopathic compound), and selectable marker gene neomycin phosphotransferase II. Procedural development included generation of …

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Sprouting Systems, Abaigeal Aydt, Cassidy Smith May 2022

Sprouting Systems, Abaigeal Aydt, Cassidy Smith

Honors Program: Expanded Learning Clubs

After taking a class at UNL about environmental awareness, two honors students paired up to start a hydroponics club at a local Lincoln school. In reaching out to the LPS director of sustainability, they were paired up with Prescott Elementary School. Over the course of a semester, they developed a club that got a hydroponic grow tower functioning for the school and taught students about nutrition and sustainability. This club is only in its beginning stages, but the impacts that it is making around the school can already be seen.

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Physiological Costs Of Total Cholesterol In European Starlings Across An Urban To Rural Gradient, Courtney Linkous May 2022

Physiological Costs Of Total Cholesterol In European Starlings Across An Urban To Rural Gradient, Courtney Linkous

Master of Science in Integrative Biology Theses

Urban areas—characterized by high human densities and associated buildings and impermeable surfaces—are increasing globally and represents a leading threat to wildlife that is drastically altering the natural resources they are accustomed to. Prior studies suggest that living in urban habitats can cause wildlife to show increased cholesterol levels; in biomedical research, elevated cholesterol is linked to disease, but the consequence of elevated cholesterol in wildlife remains unclear. We measured total cholesterol in European starlings (Sturnus vulgaris)—an urban adapted species—across an urban and a rural site. We ask: (1) do urban starlings have elevated cholesterol, (2) does elevated cholesterol …

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Pilfering Passerines? Inter-Class Competition: A New Direction In Foraging Ecology, Shannon Gillen May 2022

Pilfering Passerines? Inter-Class Competition: A New Direction In Foraging Ecology, Shannon Gillen

Masters Theses, 2020-current

Life in the epigeal layer below leaf litterfall often goes unexplored. Shrews (Soricidae, 1910) have foraged in this microhabitat for millions of years, carving out an existence in harsh habitats around the world, ranging from the tropics to subarctic boreal tundra. Two shrew species that inhabit the Shenandoah Valley of Virginia, the least shrew (Cryptotis parva) and northern short-tailed shrew (Blarina brevicauda), were the focus of this study. Shrews make epigeal foraging trails while they continually forage for food, and caching is a way to save this food for times of low and sporadic food availability. …

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Clock-Linked Genes Underlie Seasonal Migratory Timing In A Diurnal Raptor, Christen M. Bossu, Julie A. Heath, Gregory S. Kaltenecker, Barbara Helm, Kristen C. Ruegg May 2022

Clock-Linked Genes Underlie Seasonal Migratory Timing In A Diurnal Raptor, Christen M. Bossu, Julie A. Heath, Gregory S. Kaltenecker, Barbara Helm, Kristen C. Ruegg

Biology Faculty Publications and Presentations

Seasonal migration is a dynamic natural phenomenon that allows organisms to exploit favourable habitats across the annual cycle. While the morphological, physiological and behavioural changes associated with migratory behaviour are well characterized, the genetic basis of migration and its link to endogenous biological time-keeping pathways are poorly understood. Historically, genome-wide research has focused on genes of large effect, whereas many genes of small effect may work together to regulate complex traits like migratory behaviour. Here, we explicitly relax stringent outlier detection thresholds and, as a result, discover how multiple biological time-keeping genes are important to migratory timing in an iconic …

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Ontogenetic Niche Shift As A Driver Of Community Structure And Diversity In Non-Avian Dinosaurs, Katlin M. Schroeder May 2022

Ontogenetic Niche Shift As A Driver Of Community Structure And Diversity In Non-Avian Dinosaurs, Katlin M. Schroeder

Biology ETDs

As some of the most charismatic megafauna to ever walk the earth, the physiology, morphology, growth and evolution of non-avian theropods has been studied exhaustively, yet little is understood about their roles in ecosystems as juveniles. For carnivorous megatheropods, which exceed 1,000kg in mass yet hatched from eggs of limited size, the likelihood of utilizing different prey through ontogeny was high, simply by proxy of the immense difference in size between adults and juveniles. We found these ontogenetic niche shifts, evidenced by significantly different dental microwear in Tyrannosaurids, to have excluded dinosaurian mesocarnivores from Mesozoic communities. The few dinosaurian mesocarnivores …

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Developing A Novel Place Preference Assay To Compare Drosophila Species Over Time, Martha M. Brinson May 2022

Developing A Novel Place Preference Assay To Compare Drosophila Species Over Time, Martha M. Brinson

Honors Theses

Across phylogeny, integration of external factors, memory, and internal states of the organism dictate organismal behavior and mechanisms. The underlying genetic components can affect these behaviors such as in genomic changes arising from speciation. In this thesis, a new place preference assay was evaluated in the analysis and investigation of two species of Drosophila flies (D. melanogaster and D. simulans) to measure similarities and differences and their attraction to two different food substrates. Sleep and circadian measurements were also recorded during experimentation. The Drosophila Activity Monitor 5M (DAM5M) System and Sleep Circadian Analysis MATLAB Program (SCAMP) analysis were …

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Cache Like A Squirrel: Effects Of Long Term Storage On Crude Fat Content Of Q. Palustris And Q. Alba Acorns, Cheyenne T. Villarosa, Sabrina Volponi, Timothy A. Kreps, Tamara L. Johnstone-Yellin May 2022

Cache Like A Squirrel: Effects Of Long Term Storage On Crude Fat Content Of Q. Palustris And Q. Alba Acorns, Cheyenne T. Villarosa, Sabrina Volponi, Timothy A. Kreps, Tamara L. Johnstone-Yellin

Honors Projects

Quercus palustris and Quercus alba acorns are a primary component in many wild animal diets, particularly during preparation for winter. As such, they provide a natural, easily gathered food staple for wildlife recovering in rehabilitation facilities. We examined whether collection and temperature-controlled storage methods differentially affect the nutritional deterioration of crude fat in acorns to assess both caching by wildlife and to provide recommendations to rehabilitators. We collected acorns from Q. palustris in 2020 (N=8) and Q. alba in 2017 (N=11) in Bridgewater, VA, USA. Acorns were dried for 7 days using a fan or for 30 minutes in an …

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Detecting Potentially Neurotoxic Pseudo-Nitzschia Species In The Grand Strand Area, Chesney Price May 2022

Detecting Potentially Neurotoxic Pseudo-Nitzschia Species In The Grand Strand Area, Chesney Price

Honors Theses

Pseudo-nitzschia is a globally distributed diatom genus which contains 26 neurotoxin (domoic-acid) producing species. In shallow coastal waters these diatoms are associated with both the development of harmful algal blooms and the bio-accumulation of toxins in shellfish that can impact human health. Pilot data recovered in 2018 indicated the presence of multiple species of Pseudo-nitzschia, including domoic-acid producing taxa. We hypothesize that we will recover a similar species diversity using multiple sampling dates during the summer of 2021. Environmental DNA (eDNA) samples taken from the public shellfish harvesting area waters at Huntington Beach State Park (SC) over a two month …

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Effect Of Mycorrhizae Inoculation On The Growth And Success Of Three Taxodium Distichum Hybrids In Saline - Impacted Coastal Soils, Elif Ilhan May 2022

Effect Of Mycorrhizae Inoculation On The Growth And Success Of Three Taxodium Distichum Hybrids In Saline - Impacted Coastal Soils, Elif Ilhan

Electronic Theses and Dissertations

In 2008, Galveston Island was severely impacted by Hurricane Ike, resulting in high salt deposition in the soil and groundwater. This caused a loss of many native plant species. A study was initiated to determine effective ways to promote the growth conditions of three bald cypress genotypes (Taxodium distichum var distichum and Taxodium distichum var mexicanum crosses) in salt-affected soils. The treatments applied were mycorrhizae inoculation, fertilizer application, and a combination of mycorrhizae inoculation and fertilizer application. A total of sixty (60) trees planted in plots of three rows and divided into five randomized replication blocks of four treatments …

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An Analysis Of The Effects Of Temperature And Other Environmental Factors On Microorganismal Productivity Within Aquatic Ecosystems Using Long-Term Data From Various Lter And Ilter Sites, Andrew Dorbu May 2022

An Analysis Of The Effects Of Temperature And Other Environmental Factors On Microorganismal Productivity Within Aquatic Ecosystems Using Long-Term Data From Various Lter And Ilter Sites, Andrew Dorbu

Theses and Dissertations

Global climate change is a phenomenon resulting in more extreme weather patterns and species diversity loss. In this study, I explore the impacts of climate change on regional patterns of microbial productivity. Variation in microbial productivity was explained using temperature, salinity, and dissolved oxygen as predictors in regression models with data from the LTER and iLTER network of sites that ranged from the poles to the equator. I found a positive relationship between temperature and productivity. Antarctica and Arctic sites exhibited the strongest positive relationships supporting prior research demonstrating temperature as one of the driving forces of productivity change in …

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How Are Changes In Temperature And Salinity Impacting Intertidal Mussels?, Casey A. Martin May 2022

How Are Changes In Temperature And Salinity Impacting Intertidal Mussels?, Casey A. Martin

Student Research Symposium

Marine organisms living within the intertidal zones, such as mussels, experience a wide range of environmental conditions every day. Due to Climate change, these environments are transforming in such a way that may impact a mussels ability to successfully reproduce, grow, and live. Previous studies have shown that successful gamete development in freshwater mussels has been linked to temperature and species behavior has been observed to be influenced by salinity levels. In order to test the impact of temperature and salinity on mussel physiology, mussels were exposed to several treatments with varying conditions. Those conditions included a combination of a …

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B-Vitamins Influence The Consumption Of Macronutrients In Honey Bees, Walaa Ahmed Elsayeh, Chelsea N. Cook, Geraldine A. Wright May 2022

B-Vitamins Influence The Consumption Of Macronutrients In Honey Bees, Walaa Ahmed Elsayeh, Chelsea N. Cook, Geraldine A. Wright

Biological Sciences Faculty Research and Publications

Insects require dietary sources of B-vitamins, but relatively little is known about whether they regulate B-vitamin intake in the same way they regulate other nutrients. Honey bees meet their B-vitamin requirements mainly from the pollen they collect. Employing the geometric framework for nutrition, we found that honey bees actively regulate their vitamin intake following Bertrand’s rule. We fed bees with a diet of essential amino acids (EAAs) and carbohydrate (C) to identify how the addition of B-vitamins affected the regulation of these macronutrients. In our experiments, honey bees preferred vitamins in concentrations comparable to those found in honey bee food …

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Evaluating Headstarting As A Conservation Strategy For Anegada Rock Iguanas (Cyclura Pinguis), Kelly Allison Bradley May 2022

Evaluating Headstarting As A Conservation Strategy For Anegada Rock Iguanas (Cyclura Pinguis), Kelly Allison Bradley

Biology Theses - Archive

In an effort to combat the current extinction crisis, conservation biologists have developed a diverse set of tools, including conservation physiology. This scientific discipline applies physiological concepts and tools to generate conservation solutions for a broad range of species. The Anegada Rock Iguana (Cyclura pinguis) is a Critically Endangered species native to Anegada, British Virgin Islands. Feral cats depredate hatchlings within months of emergence, drastically reducing recruitment and population growth. By the 1990s, the population had declined by 80%. A headstart program was initiated in 1997 to combat this threat and increase the population. Wild collected hatchlings are reared in …

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The Effect Of A Health Educational Program On Sleep Related Health Outcomes, Swetha Sirigineedi May 2022

The Effect Of A Health Educational Program On Sleep Related Health Outcomes, Swetha Sirigineedi

Biological Sciences Undergraduate Honors Theses

Sleep quality has effects on both physical and mental health. Because of this, sleep hygiene is an important health goal. Participation in health programs promoting healthy behaviors has helped people reach their health goals and elicited positive behavior change. Because of this, it was of interest to determine if participation in a virtual, multi-media health education program improved health and wellbeing outcomes of Arkansans. The main objective of this study was to determine the effect of a 20-week behavior and health educational program on the ability of participants to achieve their health goals and improve their health behaviors related to …

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Life After Death – Does Carcass Biodiversity Scale With Carcass Body Size?, Troy Warfield May 2022

Life After Death – Does Carcass Biodiversity Scale With Carcass Body Size?, Troy Warfield

Biological Sciences Undergraduate Honors Theses

Mammals play a large role in the ecosystems where some, especially large-bodied mammals, act as ecosystem engineers. Mammal carcasses, particularly those of large body mass act as a temporary island of dense nutrients that support other organisms, including other mammal species, for an extended period. Research in this field currently focuses on the link between mammal carcass size and nutrient availably or on non-mammalian size and biodiversity, but little is available on the correlation between mammal carcass size and its influence on ecosystem biodiversity. Here we ask, does the available biomass (i.e., body size) of the carcass affect its role …

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Keeping Your Cool: Thermoregulatory Performance And Plasticity In Desert Cricetid Rodents, Richard W. Ramirez, Eric A. Riddell, Steven R. Beissinger, Blair O. Wolf May 2022

Keeping Your Cool: Thermoregulatory Performance And Plasticity In Desert Cricetid Rodents, Richard W. Ramirez, Eric A. Riddell, Steven R. Beissinger, Blair O. Wolf

Biology ETDs

Small mammals in hot deserts often avoid heat via nocturnality and fossoriality and are thought to have a limited capacity to dissipate heat using evaporative cooling. Research to date has focused on thermoregulatory responses to air temperatures (Ta) below body temperature (Tb). Consequently, the thermoregulatory performance of small mammals exposed to high air temperatures is poorly understood, particularly responses across geographic and seasonal scales. We quantified the seasonal thermoregulatory performance of four cricetid rodents (Neotoma albigula, N. lepida, Peromyscus eremicus, P. crinitus) exposed to high Ta, at four sites …

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Feeding Preference Of The Sea Urchin Arbacia Punctulata For Algal Turf Over Kelp In A Degraded Kelp Forest Ecosystem, Kenneth J. Hamel May 2022

Feeding Preference Of The Sea Urchin Arbacia Punctulata For Algal Turf Over Kelp In A Degraded Kelp Forest Ecosystem, Kenneth J. Hamel

Theses, Dissertations and Culminating Projects

Increasingly severe ocean warming and marine heatwave events are driving declines in habitat-forming kelps worldwide. Direct mortality from extreme temperatures, coupled with destabilization of kelp forest communities, commonly trigger ecological community shifts from dominant kelp forests to an algal turf dominated state. Opportunistic algal turf species are more resilient to warming and lack the fundamental structure of kelp forests, and thus reduce ecosystem services and biodiversity. Once in place, algal turf communities contain ecological feedback mechanisms, diminishing kelp recruitment, and potential recovery. The various feedback mechanisms and ecological thresholds that maintain or drive community shifts between kelp forest and algal …

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Investigation Into The Responses Of Physcomitrella Patens To Herbivory And The Influence Of Light On The Production Of Defense Compounds, Matthew Morris May 2022

Investigation Into The Responses Of Physcomitrella Patens To Herbivory And The Influence Of Light On The Production Of Defense Compounds, Matthew Morris

Undergraduate Honors Thesis Collection

Plant defense mechanisms are well studied in many agriculturally relevant crops such as corn and tomatoes. Though less studied, the more ancestral nonvascular plants may be able to provide insights into the origin and working of modern plant defense systems. In this study, the bryophyte Physcomitrella patens was researched and the role of the jasmonic acid pathway in response to herbivory was investigated. Additionally, the impact of light intensity on the efficacy of this pathway was to be determined. After exposing the moss to various chemical elicitors and mechanical wounding, the activity of proteins produced in the JA pathway was …

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Agricultural Practices And Nitrogen Cycling Microbes: The Impact Of Sustainable Farming Practices On Nutrient Movement In Indianapolis Urban Farms, Margaret Davis May 2022

Agricultural Practices And Nitrogen Cycling Microbes: The Impact Of Sustainable Farming Practices On Nutrient Movement In Indianapolis Urban Farms, Margaret Davis

Undergraduate Honors Thesis Collection

As population movement to urban centers and decreased availability of fresh foods becomes more common, the prevalence of food deserts is becoming far greater. Urban farming can potentially help address these issues by bringing healthy and fresh food sources directly to these areas that lack access to quality food. Urban farming is reliant on the implementation of sustainable practices, like the use of cover crops, to increase the amount of nutrients that are accessible to plants from the soil. Nitrogen is a vital nutrient but cannot be readily produced by plants, so it must be obtained by either an external …

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Bioinformatics Analysis Of The Transcriptomic Profiles Of Duchenne Muscular Dystrophy Patients / Narrative Competence And Cognitive Mapping As A Culturally Sustaining Pedagogy In The Education Of Emergent Bilinguals, Bianca Gonzalez May 2022

Bioinformatics Analysis Of The Transcriptomic Profiles Of Duchenne Muscular Dystrophy Patients / Narrative Competence And Cognitive Mapping As A Culturally Sustaining Pedagogy In The Education Of Emergent Bilinguals, Bianca Gonzalez

Legacy Theses & Dissertations (2009 - 2024)

Duchenne Muscular Dystrophy (DMD) is a muscle-wasting disease that primarily affects boys characterized by loss of the dystrophin gene. Dystrophin is necessary for proper muscle growth, muscles that lack dystrophin are more prone to damage. In this thesis, a bioinformatics approach was used to evaluate the transcriptomic profiles of two datasets obtained from DMD patients. The two datasets were analyzed separately, as well as combined to identify differentially expressed genes. The first dataset, GSE6011, has 23 DMD samples and 14 controls. The second, GSE38417, consists of 16 DMD samples and six controls. Differential gene expression of both datasets combined found …

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Food Quality, Security, And Thermal Refuge Influence The Use Of Microsites And Patches By Pygmy Rabbits (Brachylagus Idahoensis) Across Landscapes And Seasons, Peter J. Olsoy, Charlotte R. Milling, Jordan D. Nobler, Meghan J. Camp, Lisa A. Shipley, Jennifer S. Forbey, Janet L. Rachlow, Daniel H. Thornton May 2022

Food Quality, Security, And Thermal Refuge Influence The Use Of Microsites And Patches By Pygmy Rabbits (Brachylagus Idahoensis) Across Landscapes And Seasons, Peter J. Olsoy, Charlotte R. Milling, Jordan D. Nobler, Meghan J. Camp, Lisa A. Shipley, Jennifer S. Forbey, Janet L. Rachlow, Daniel H. Thornton

Biology Faculty Publications and Presentations

How intensely animals use habitat features depends on their functional properties (i.e., how the feature influences fitness) and the spatial and temporal scale considered. For herbivores, habitat use is expected to reflect the competing risks of starvation, predation, and thermal stress, but the relative influence of each functional property is expected to vary in space and time. We examined how a dietary and habitat specialist, the pygmy rabbit (Brachylagus idahoensis), used these functional properties of its sagebrush habitat—food quality, security, and thermal refuge—at two hierarchical spatial scales (microsite and patch) across two seasons (winter and summer). At the …

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Evaluating Methods To Determine The Maximum Oxygen Consumption By The Gulf Killifish, Fundulus Grandis, Sylvia Mullen May 2022

Evaluating Methods To Determine The Maximum Oxygen Consumption By The Gulf Killifish, Fundulus Grandis, Sylvia Mullen

Senior Honors Theses

Metabolic rate is an essential feature of animal physiology and ecology. The rate of aerobic metabolism, as determined by oxygen consumption rate (MO2), is influenced by a variety of factors, including body size, temperature, and activity levels. Maximum aerobic metabolic rate (MMR) reflects the physiological capacity of an animal for oxygen extraction and utilization. As such, MMR is argued to be an important feature of an animal’s life history. For fish, MMR is frequently estimated as the peak MO2 immediately following an exhaustive chase, although several studies indicate that this value may underestimate MMR. Rather, MMR may be attained during …

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