Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- Morehead State University (1493)
- Utah State University (1212)
- Washington University in St. Louis (668)
- University of Nebraska - Lincoln (574)
- TÜBİTAK (568)
-
- Marquette University (533)
- Portland State University (338)
- California Polytechnic State University, San Luis Obispo (333)
- University of Texas Rio Grande Valley (321)
- Old Dominion University (319)
- Nova Southeastern University (304)
- The Texas Medical Center Library (303)
- City University of New York (CUNY) (301)
- University of New Mexico (277)
- University of Richmond (256)
- University of Central Florida (255)
- University of Montana (254)
- University of South Carolina (250)
- University of Kentucky (244)
- Wright State University (241)
- Boise State University (236)
- University of South Florida (235)
- Western Kentucky University (223)
- Loyola University Chicago (206)
- Eastern Illinois University (203)
- Missouri University of Science and Technology (201)
- Montclair State University (200)
- Department of Primary Industries and Regional Development, Western Australia (195)
- University of Arkansas, Fayetteville (193)
- Smith College (188)
- Keyword
-
- Biology (440)
- Animals (356)
- Ecology (226)
- Evolution (204)
- Climate change (202)
-
- Mice (195)
- Conservation (185)
- Behavior (157)
- Humans (148)
- Department of Biological Sciences (139)
- Metabolism (137)
- Biological Sciences (136)
- Scanning electron microscopy (135)
- Biodiversity (134)
- Fish (118)
- Genetics (118)
- Biological sciences (109)
- Cancer (109)
- Development (109)
- Experiments (107)
- Apoptosis (105)
- Morphology (104)
- Physiology (103)
- Drosophila (101)
- Gene expression (101)
- Limnology (101)
- Aquatic ecology (98)
- Mitochondria (98)
- Reproduction (97)
- Freshwater biology (95)
- Publication Year
- Publication
-
- Roger W. Barbour Slide Collection (1387)
- Biology Faculty Publications (774)
- Turkish Journal of Biology (568)
- Biological Sciences Faculty Publications (543)
- Arts & Sciences Graduate Student Theses and Dissertations (515)
-
- Theses and Dissertations (505)
- Electronic Theses and Dissertations (428)
- Scanning Microscopy (398)
- Biological Sciences Faculty Research and Publications (379)
- School of Biological Sciences: Faculty Publications (366)
- Biology Faculty Publications and Presentations (365)
- Faculty Publications (336)
- Master's Theses (334)
- Masters Theses (313)
- Biological Sciences (289)
- Honors Theses (265)
- Biology ETDs (243)
- Biology Faculty Works (239)
- Biology Faculty Research (236)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (226)
- Faculty, Staff and Students Publications (214)
- Biology (198)
- Dissertations (195)
- Dissertations and Theses (194)
- Biological Sciences: Faculty Publications (177)
- School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology) (177)
- USF Tampa Graduate Theses and Dissertations (153)
- All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series (137)
- Biological Sciences Faculty Research & Creative Works (136)
- Fisheries Management Papers (136)
- Publication Type
- File Type
Articles 2071 - 2100 of 20612
Full-Text Articles in Entire DC Network
The Blackfeet Nation’S Bison Conservation Herd Management Plan, Brandon Kittson
The Blackfeet Nation’S Bison Conservation Herd Management Plan, Brandon Kittson
Graduate Student Theses, Dissertations, & Professional Papers
This document is meant to act as a guide to understanding Bison reintroduction on the Blackfeet reservation and serve as a resource for bison management. This report and plan will: 1) review bison ecology and the history of reintroduction efforts on the reservation; 2) identify potential issues and barriers to successful reintroduction; 3) present a summary of current land policies and patterns of land use on the reservation; and 4) provide recommendations for dealing with those potential issues. Recommendations will be based on analyses of previous knowledge of bison and bison behavior.
Better Understanding The Barred Owl, Adam Lee Potts
Better Understanding The Barred Owl, Adam Lee Potts
Graduate Student Theses, Dissertations, & Professional Papers
This thesis research presents an analysis of barred owl nest site selection in an understudied region of their expanded range. The barred owl has dramatically expanded its range westwards over the last 150 years, prompting multiple conflicting reinterpretations of their species account. Hypotheses of range expansion are reviewed to provide context for this study’s research. This study gathers empirical data on nest site selection in the mixed conifer forests of Montana’s Seeley-Swan and Mission Valleys. Eight barred owl nests were located following extensive territory surveys. Field measurements of tree height and diameter using USFS Forest Inventory and Analysis (FIA) plot …
Repatriation And A Biological Profile Of Indigenous Remains Of West Texas, Haley P. Rebardi
Repatriation And A Biological Profile Of Indigenous Remains Of West Texas, Haley P. Rebardi
Graduate Student Theses, Dissertations, & Professional Papers
The Native American Graves Protection and Repatriation Act (NAGPRA) was created in response to the injustice, mishandling, looting, and trafficking of Native American remains and cultural artifacts. However, even with the latest amendment in December of 2023, there are still gray areas in the context and language. Notably, an issue with NAGPRA is the act only includes institutions and organizations that receive and are supported by Federal funding. Consequently, the act does not cover private collections. The main concern in these contexts is the lack of communication, awareness, and/or permission with and from descendant tribes or potential descendants when it …
Exploring The Relative Contribution Of Humans On Genetic Differentiation Among Speyeria Callippe Populations In The California Coast Ranges, Laura K. Heller
Exploring The Relative Contribution Of Humans On Genetic Differentiation Among Speyeria Callippe Populations In The California Coast Ranges, Laura K. Heller
University of the Pacific Theses and Dissertations
The distinction between populations due to environmental factors like climate and geography are well-known and expected, therefore it is not illogical to believe more disjunct habitats would also impact genetic structure. Through Restriction Site Associated DNA Sequencing (RADseq) and Mitochondrial DNA (mtDNA) analysis the genetic structure and differentiation (fixation index, Fst) of Speyeria callippe across four regions in California: the North Coast Ranges, Bay Area, Diablo Range, and South Coast Ranges were analyzed. The influence of geographic distance, human population density, and forest cover were explored as factors influencing the genetics of these populations. The combination of mtDNA and RADseq …
Effects Of Glyphosate-Based Herbicide Exposure On Life History, Stress Tolerance, And Microbiome—From Plasticity To Evolution, Jacob R. Whitlock
Effects Of Glyphosate-Based Herbicide Exposure On Life History, Stress Tolerance, And Microbiome—From Plasticity To Evolution, Jacob R. Whitlock
University of the Pacific Theses and Dissertations
Glyphosate (GLY) is the most used pesticide worldwide, and GLY-based herbicides (GBHs) can affect animals’ microbiomes and, in turn, their physiology and morphology. Environmental stressors can be mitigated by flexibility in life-history strategies, which can also dictate animal physiology and morphology. However, we lack an understanding of how GBH influences life-history strategies and stress tolerance, in addition to its effects across generations. Thus, I exposed the variable field cricket, Gryllus lineaticeps, to GBH within- and across-generations to examine the role of GBH in developmental plasticity and evolution. Specifically, I measured its effects on life-history traits (e.g., developmental duration and a …
Effects Of Fetal Bovine Serum On The Proteome And Secretome Of Pichia Pastoris, Kenneth L. Nguyen
Effects Of Fetal Bovine Serum On The Proteome And Secretome Of Pichia Pastoris, Kenneth L. Nguyen
University of the Pacific Theses and Dissertations
Komagataella pastoris, formerly known as Pichia pastoris, and hereafter referred to as Pichia, is a methylotrophic yeast widely employed as a recombinant protein factory for biotechnical and industrial purposes. P. pastoris boasts the ability to thrive at high cell densities, executes numerous post-translational modifications, and exhibits minimal secretion of endogenous proteins, thus greatly facilitating the expression and purification of recombinant proteins. Despite these advantages, Pichia still presents certain challenges as an expression system. Occasionally, recombinant proteins are retained within the cell and subject to degradation. Furthermore, Pichia falls short in matching the production capabilities of more widely used systems like …
The Role Of The Unfolded Protein Response In Fatty Liver Disease, Anusha L. Murshed
The Role Of The Unfolded Protein Response In Fatty Liver Disease, Anusha L. Murshed
University of the Pacific Theses and Dissertations
The unfolded protein response (UPR) is composed of three highly conserved pathways (ATF6, IRE1, PERK). Cellular stressors induce protein misfolding and aggregation in the endoplasmic reticulum (ER). This signaling pathway maintains protein homeostasis when there is stress in the ER. When the UPR is activated, the eukaryotic initiation factor 2 alpha (eIF2α) becomes phosphorylated, which inhibits global mRNA translation. If ER stress remains chronically unmitigated, the UPR induces apoptosis. GADD34 and CReP shift in expression when the UPR is activated and work as phosphatases and dephosphorylate eIF2α in a feedback loop, allowing protein synthesis to resume. Several human diseases, including …
Insight Into A Sexually Dimorphic Ostracod Crustacean By Mass Spectrometry And Microtomography, Cindy D. Davis
Insight Into A Sexually Dimorphic Ostracod Crustacean By Mass Spectrometry And Microtomography, Cindy D. Davis
University of the Pacific Theses and Dissertations
The importance of the central nervous system cannot be understated. An array ofmolecules associated with the brain regulate basic behaviors as well as sex specific behaviors. Describing the molecular background is not the only way that I can learn more of the central nervous system. Describing the anatomy of the central nervous system can be crucial in understanding what regions of the brain is particularly key to the animal. Euphilomedes carcharodonta is a small marine crustacean native to the subtidal zone of the California coast. This ostracod makes for a compelling candidate to explore these research interests as this organism …
Plasticity In Response To Temperature Magnitude And Variation---From Life History To Thermal Tolerance And Coloration, Austin Rex Hoffman
Plasticity In Response To Temperature Magnitude And Variation---From Life History To Thermal Tolerance And Coloration, Austin Rex Hoffman
University of the Pacific Theses and Dissertations
Warming associated with climate change has many direct and downstream effects on animals. For example, warmer developmental temperatures can improve heat tolerance and reduce insect melanization, which is related to coloration, thermoregulation, immunity, desiccation resistance, and potentially life-history traits, such as investment into reproduction and dispersal. Increased temperature variation is also a feature of climate change, and it may have a larger impact on animals than warming. However, I lack insight into the combined effects of temperature magnitude and variability on important traits of life history, thermal tolerance, and coloration. Thus, I integrated temperature variation into thermal performance using a …
Transgenerational Effects Of Stress On The Plasma Proteome Of A Marine Mammal, Emily Voelkner
Transgenerational Effects Of Stress On The Plasma Proteome Of A Marine Mammal, Emily Voelkner
University of the Pacific Theses and Dissertations
The physiological stress response enables animals to respond to changes in their environment, and is mediated by the hypothalamic-pituitary-adrenal (HPA) axis in mammals. Increased activation of the HPA axis by repeated stress during critical life stages like reproduction could affect fitness. Information about a stressor can be communicated to offspring via hormone signals prenatally, or postnatally via milk, and affect offspring development and stress reactivity. Experimentally activating the HPA axis by adrenocorticotropic hormone (ACTH) administration results in the synthesis of the major glucocorticoid hormone cortisol, which has well-studied far-reaching effects on growth, metabolism, and immunity. Beyond cortisol levels alone, biomarkers …
Investigation Of L-Serine Synthesis And Transport As Stabilizing Feedback Mechanisms Within The Tsetse-Wigglesworthia Symbiosis, Ryan Phillips
Investigation Of L-Serine Synthesis And Transport As Stabilizing Feedback Mechanisms Within The Tsetse-Wigglesworthia Symbiosis, Ryan Phillips
Graduate Theses, Dissertations, and Problem Reports (ETD)
Tsetse flies (Glossina morsitans), which are the obligate vectors of Old-World trypanosomes (Trypanosoma spp.) that cause African trypanosomiasis, have a bacteriome that houses the intracellular endosymbiont Wigglesworthia glossinidia. The ancient coevolution of these species has led to the integration of Wigglesworthia metabolism into tsetse physiology and a subsequent reliance on nutrient exchange for maintaining the fitness of both partners. The establishment of this obligate mutualism has facilitated the emergence of feedback mechanisms that stabilize the symbiosis, such as that which involves the exchange of L-serine and B vitamins. The Gammaproteobacteria Wigglesworthia supplement B vitamins lacking …
Characterization Of Tonneau1 Recruiting Motif Proteins And Ton2 Signaling Functions, Tyler Falk
Characterization Of Tonneau1 Recruiting Motif Proteins And Ton2 Signaling Functions, Tyler Falk
Theses and Dissertations
Plants cells are fixed in place. As a result they have to carefully divide in order to function properly. Plants use a number of complex microtubule arrays to ensure proper division and orientation including the preprophase band (PPB) and the phragmoplast. The PPB orients the cell prior to division and marks the cortical division site, which is where the phragmoplast is guided to. The phragmoplast is a dynamic microtubule array that builds the cell plate which later becomes the cell wall that divides daughter cells. Proteins involved with PPB formation include Tonneau1 (TON1) and Tonneau2 (TON2) which localize to and …
Automatic Detection Of Birds In Images Acquired With Remotely Piloted Aircraft For Managing Wildlife Strikes To Civil Aircraft, Maurycio Rodrigues Oviedo, Flavio A. C. Mendonca Ph.D., Jose Cabrera, Cole A. Mcnall, Raymond Ayres, Ricardo Luís Barbosa, Rodrigo Gallis
Automatic Detection Of Birds In Images Acquired With Remotely Piloted Aircraft For Managing Wildlife Strikes To Civil Aircraft, Maurycio Rodrigues Oviedo, Flavio A. C. Mendonca Ph.D., Jose Cabrera, Cole A. Mcnall, Raymond Ayres, Ricardo Luís Barbosa, Rodrigo Gallis
International Journal of Aviation, Aeronautics, and Aerospace
Wildlife strikes represent a significant threat to aviation safety and economics, as evidenced by notable incidents such as the emergency landing of US Airways Flight 1549 in 2009. The Federal Aviation Administration (FAA) acknowledges this growing concern, as evidenced by its report on Wildlife Strikes to Civil Aircraft in the United States from 1990 to 2019.To address the need for improved risk management, airports conduct Wildlife Hazard Assessments (WHA), a laborious process typically relying on visual identification by Qualified Airport Wildlife Biologists (QAWB). However, technological advancements, such as Remotely Piloted Aircraft (RPA) and machine learning (ML), offer promising solutions to …
Optimization Of An Immune Assay To Detect Binding Of Nod2 To Staphylococcus Aureus, Precious Mckenzie
Optimization Of An Immune Assay To Detect Binding Of Nod2 To Staphylococcus Aureus, Precious Mckenzie
All Student Theses and Dissertations
Staphylococcus aureus, a gram-positive, commensal bacterium, is the cause of a multitude of opportunistic diseases and infections. While S. aureus has evolved ways to escape innate immune responses in the host, the mechanisms are not fully understood. One area of active research involves mechanisms by which S. aureus avoids detection by Pattern Recognition Receptors (PRRs), such as Nuclear Oligomerization Domain 2 (NOD2), present on the surface of and inside innate immune cells. This study aimed to design and optimize an assay that can be utilized to investigate S. aureus components that contribute to the activation of NOD2 receptors. The …
Restricted Dispersal And Phenotypic Response To Water Depth In A Foundation Seagrass, Erik E. Sotka, Randall Hughes, Torrie Hanley, Cynthia G. Hays
Restricted Dispersal And Phenotypic Response To Water Depth In A Foundation Seagrass, Erik E. Sotka, Randall Hughes, Torrie Hanley, Cynthia G. Hays
Biology Faculty Publications
Species conservation and management benefit from precise understanding of natural patterns of dispersal and genetic variation. Using recent advances in indirect genetic methods applied to both adult plants and dispersed seeds, we find that the mean seed dispersal in a threatened marine foundation plant (the eelgrass Zostera marina) is approximately 100-200 m. This distance is surprisingly more similar to that of wind-dispersed terrestrial seeds (~10s to 100s of meters) than the passive dispersal of marine propagules via currents (~10s to 100s of kilometres). Because nearshore marine plants like Zostera are commonly distributed across strong selective gradients driven by bathymetry (depth) …
The Larval Preference Of An Invasive Bryozoan (Watersipora 'New Species') For Copper-Based Antifouling Paints, Alexander K. Strawhand
The Larval Preference Of An Invasive Bryozoan (Watersipora 'New Species') For Copper-Based Antifouling Paints, Alexander K. Strawhand
Cal Poly Humboldt theses and projects
The bryozoan Watersipora subtorquata and its cryptic congener Watersipora ‘new species’ are now globally invasive species. Previous studies have found this species complex to have a high tolerance to copper-based antifouling paints, which represent a large portion of the mitigation effort toward preventing hull fouling by invasive invertebrates. Tolerance alone, however, is unlikely to explain the full extent of Watersipora’s massive and rapid worldwide invasion success. The aim of this research was to move beyond tolerance, and test whether larvae of Watersipora ‘new species’ exhibit a preference for copper-coated settlement surfaces in both laboratory and field settings. For the laboratory …
A Case Of Incipient Budding Speciation In The California Floristic Province, Infraspecific Divergence In Abronia Villosa, Eli J. Allen
A Case Of Incipient Budding Speciation In The California Floristic Province, Infraspecific Divergence In Abronia Villosa, Eli J. Allen
Cal Poly Humboldt theses and projects
Physical barriers to gene flow are the traditional evidence for species divergence. Conversely, there has been increasing acknowledgment of speciation in the face of gene flow as an evolutionary process. Budding speciation involves peripheral populations adapting to local ecological conditions, thereby budding off from a widespread progenitor species. Budding speciation is distinguished by ecological divergence and is generally evidenced by asymmetrical range size and nested phylogenetic relationships of sister species. The narrow endemic Abronia villosa var. aurita is adapted to montane sandy washes adjacent to its widespread sister variety, the desert dwelling var. villosa. Here, I tested the hypothesis …
Bird Predation On Coho Salmon (Oncorhynchus Kisutch) In Humboldt Bay, Colton J. Dixon
Bird Predation On Coho Salmon (Oncorhynchus Kisutch) In Humboldt Bay, Colton J. Dixon
Cal Poly Humboldt theses and projects
Coho Salmon (Oncorhynchus kisutch) populations along the west coast of the United States are declining. In Humboldt County, located in northwestern California, Coho Salmon have been in decline since their federal listing as threatened in 1997, primarily due to habitat loss from logging, agriculture, and urban development. Although these anthropogenic factors caused salmon populations to decline, bird predation may also be hindering population recovery, as evidenced by the recovery of Passive Integrated Transponder (PIT) tags, originally implanted in Coho Salmon, from bird colonies in Humboldt Bay. This study examines predation by Double-crested Cormorants (Phalacrocorax auritus), Caspian …
Interactions Between New Zealand Mud Snails (Potamopyrgus Antipodarum) And Toxic Cyanoabacteria (Anabaena) In Baduwa’T (Mad River), Humboldt County, California, Cecilia F. Kennelly
Interactions Between New Zealand Mud Snails (Potamopyrgus Antipodarum) And Toxic Cyanoabacteria (Anabaena) In Baduwa’T (Mad River), Humboldt County, California, Cecilia F. Kennelly
Cal Poly Humboldt theses and projects
Invasive species in freshwater systems are circulated around the globe, wreaking havoc on natural communities. The New Zealand mud snail (Potamopyrgus antipodarum) is a very successful aquatic invader that has established populations in freshwater streams, lakes, and rivers around the globe. The goal of this project was to evaluate the interactions of invasive New Zealand mud snails (NZMS) and toxic cyanobacteria Anabaena in the Mad River in Humboldt County, California. These two species of concern are found in similar habitats along the river, but their whether NZMS consume Anabaena or affect toxin production is unknown. First, I conducted …
Translation Of: Trembley À Réaumur, Abraham Trembley, Morgan Mclaughlin
Translation Of: Trembley À Réaumur, Abraham Trembley, Morgan Mclaughlin
Biology: Student Scholarship & Creative Works
While examining a jar filled with aquatic plants and animals, Abraham Trembley, a young tutor working for Count William Bentinck in the Netherlands, noticed tiny, green, tube-shaped organisms attached to aquatic plants. Uncertain whether they were plants or animals, he devised a brilliant series of experiments to understand their biology. He observed them contract when disturbed and take steps towards a light, gathering in front of a chevron-shaped opening in a piece of cardboard. Nearly convinced they were animals, he cut one in half expecting to see it die. Instead, it regenerated two perfectly formed bodies from the severed halves. …
Coleoptera Of Brazil: What We Knew Then And What We Know Now. Insights From The Catálogo Taxonômico Da Fauna Do Brasil, Edilson Caron, Marcela L. Monné, Geoffrey Morse, Et Al.
Coleoptera Of Brazil: What We Knew Then And What We Know Now. Insights From The Catálogo Taxonômico Da Fauna Do Brasil, Edilson Caron, Marcela L. Monné, Geoffrey Morse, Et Al.
Biology: Faculty Scholarship
In 2000, Cleide Costa published a paper presenting the state of knowledge of the Neotropical Coleopte ra, with a focus on the Brazilian fauna. Twenty-four years later, thanks to the development of the Coleoptera section of the Taxonomic Catalog of the Brazilian Fauna (CTFB - Catálogo Taxonômico da Fauna do Brasil) through the collaboration of 100 coleopterists from all over the globe, we can build on Costa’s work and present an updated overview of the state of knowledge of the beetles from Brazil. There are currently 35,699 species in 4,958 genera and 116 families known to occur in the country, …
An Overview Of The Brazilian Chrysomelidae (Insecta: Coleoptera): The Most Species-Rich Beetle Family In Brazil, Adelita M. Linzmeier, Luciano De A. Moura, Cibele S. Ribeiro-Costa, Daiara Manfio, Federico Agrain, Maria L. Chamorro, Geoffrey Morse, Renato Regalin, Lukáš Sekerka
An Overview Of The Brazilian Chrysomelidae (Insecta: Coleoptera): The Most Species-Rich Beetle Family In Brazil, Adelita M. Linzmeier, Luciano De A. Moura, Cibele S. Ribeiro-Costa, Daiara Manfio, Federico Agrain, Maria L. Chamorro, Geoffrey Morse, Renato Regalin, Lukáš Sekerka
Biology: Faculty Scholarship
The leaf beetles (Chrysomelidae) are one of the most species-rich family of herbivorous beetles with about 45,000 species worldwide. Based on the contributions of chrysomelidologists to the Taxonomic Catalog of the Brazilian Fauna - CTFB, the family comprises 6,079 species in 562 genera of which 951 species are endemic to Brazil, standing out as the most diverse, representing 4.8% of the Brazilian fauna and 17.1% of the beetle species. Chrysomelidae has twelve subfamilies with nine reported to Brazil: Galerucinae, the richest with 1,916 species in 202 genera, followed by Cassidinae, Eumolpinae, Cryptocephalinae, Chrysomelinae, Bruchinae, Criocerinae, Lamprosomatinae and Sagrinae - this …
How Does A Global Climate Cycle Affect The Reproductive Output Of A Neotropical Migratory Bird?, Abby K. Bressette, Emma Cummings, Daniel Albrecht-Mallinger, Lesley Bulluck
How Does A Global Climate Cycle Affect The Reproductive Output Of A Neotropical Migratory Bird?, Abby K. Bressette, Emma Cummings, Daniel Albrecht-Mallinger, Lesley Bulluck
UROP Posters
El-Niño Southern Oscillation (ENSO) causes regional changes in climate and has been found to have varying effects on the survival, fecundity, and recruitment of migratory songbirds. This study seeks to better understand the effect of ENSO on the fecundity of Virginia-breeding Prothonotary warbler (Protonotaria citrea; PROW), a neotropical migratory songbird. PROW breed in the Eastern United States and spend the non-breeding season primarily in Panama and Colombia. Ongoing research in Virginia has found a positive relationship between spring precipitation and predicted number of PROW fledgelings during La Niña, but the opposite during El Niño. To better understand this relationship, we …
Carry-Over Effects Of Climate On Prothonotary Warbler (Protonotaria Citrea) Feather Quality, Alyssa N. Spasic, Dan Albrecht-Mallinger, Lesley Bulluck
Carry-Over Effects Of Climate On Prothonotary Warbler (Protonotaria Citrea) Feather Quality, Alyssa N. Spasic, Dan Albrecht-Mallinger, Lesley Bulluck
UROP Posters
Avian species have inspired numerous studies on ornamentation, exploring its role in intra- and intersexual selection as a marker for individual quality. Male birds have been the focus of most of these studies while females, which can also display ornamentation, have been studied less. Coloration achieved through molt, particularly carotenoid-based pigments, requires energy derived from food resources. As climate affects insect abundance, there may be a link between climate conditions during molt and feather quality the following season. We assessed the relationship between temperature and precipitation during molt and female Prothonotary Warbler (Protonotaria citrea) breast and crown feather reflectance metrics …
Cerebellar Feedback Effects On Responses To Conspecific Signals Of Different Frequencies In The Electrosensory System, Elora K. Shinn
Cerebellar Feedback Effects On Responses To Conspecific Signals Of Different Frequencies In The Electrosensory System, Elora K. Shinn
Graduate Theses, Dissertations, and Problem Reports (ETD)
Sensory systems in animals have evolved to translate physical stimuli into neural representations that, in turn, guide behavior. Feedback is critical in these processes, allowing organisms to filter redundant information and respond effectively to relevant stimuli. In humans, for example, the cerebellar flocculus provides feedback to the vestibulo-ocular reflex to stabilize eye movements during body rotation. In bats, the feedback during echolocation helps prioritize essential signals from the environment. In weakly electric fish, cerebellar feedback helps filter out redundant low-frequency modulations caused by conspecifics, enabling them to detect prey and other relevant signals. However, the influence of cerebellar feedback on …
Remediating Fibrosis To Restore Salivary Gland Function, Jennifer Morrissey
Remediating Fibrosis To Restore Salivary Gland Function, Jennifer Morrissey
Electronic Theses & Dissertations (2024 - present)
Fibrosis is defined by the overgrowth, hardening, and scarring of various tissues and is attributed to excess deposition of extracellular matrix components including collagen. In the case of persistent injury or autoimmunity, as in Sjogren’s Disease, the ECM persists. Fibrosis can be studied in multiple animal models. Our lab has published the use of a mouse submandibular salivary gland partial resection model. In this procedure 40% of the left distal tip of the submandibular salivary gland (SMG) is excised. This leads to a chronic sustained fibrotic response in a localized region. The use of the non-obese diabetic mouse (NOD) has …
Aberrant Lipid Accumulation And Retinal Pigment Epithelium Dysfunction In Prcd-Deficient Mice, Sree Indrani Motipally
Aberrant Lipid Accumulation And Retinal Pigment Epithelium Dysfunction In Prcd-Deficient Mice, Sree Indrani Motipally
Graduate Theses, Dissertations, and Problem Reports (ETD)
Progressive Rod-Cone Degeneration (PRCD) is a peripheral membrane protein predominantly expressed in photoreceptor outer segment (OS) disc membranes with an unknown function. Several mutations in Prcd are implicated in Retinitis pigmentosa (RP) in humans. The most common “cysteine to tyrosine” (C2Y) mutation in Prcd leads to progressive retinal atrophy in multiple dog breeds and RP in humans. Canine models harboring the C2Y mutation in Prcd show disorganized OS structure with greatly attenuated photoreceptor OS renewal rates. Recent studies show defects in the photoreceptor nascent disc flattening in the absence of Prcd. However, it is unclear how OS discs eventually …
An Inhibitory Recurrent Network In The Olfactory System, Farzaan Salman
An Inhibitory Recurrent Network In The Olfactory System, Farzaan Salman
Graduate Theses, Dissertations, and Problem Reports (ETD)
Neuromodulatory circuits are a necessary component of neural flexibility as they are able to act differentially depending on the receptors expressed by their downstream targets. Identifying the synaptic partners of modulatory neurons and determining the neurotransmitter and receptor content of these partners is necessary to identify the rules governing neuromodulatory circuits. In this study, I characterized the circuit of the contralaterally projecting, serotonin-immunoreactive deutocerebral neurons (CSDns), the sole synaptic source of the neuromodulator serotonin in the olfactory circuit of Drosophila melanogaster, by identifying the strongest synaptic partners of the CSDns, and the expression of genes encoding neurotransmitters and receptors of …
Mammalian Biodiversity On Greenways Across An Urban-To-Rural Gradient, Brooklyn C. Zwinklis
Mammalian Biodiversity On Greenways Across An Urban-To-Rural Gradient, Brooklyn C. Zwinklis
College of Graduate Studies: Theses & Dissertations
Large-scale urbanization is one of the leading causes of biodiversity loss on a global scale due to habitat loss and fragmentation. This has created a need to investigate ways to mitigate the damage caused by urban development, such as studying whether green spaces in urban areas can serve as means of preserving mammalian biodiversity in cities. This study specifically focused on greenways as they are understudied when compared to other green spaces, such as parks and cemeteries. Greenways are linear tracts of paved land, usually designed for human recreational activities. However, their benefits to wildlife have not been well researched. …
The Biobehavioral Effects Of Embryonic Exposure To Neural Inflammation And Oxidative Stress In Zebrafish, Dalton J. Anderson
The Biobehavioral Effects Of Embryonic Exposure To Neural Inflammation And Oxidative Stress In Zebrafish, Dalton J. Anderson
Honors College Theses
The purpose of this research is to improve understanding of the neurodevelopmental effects of embryonic exposure to elevated inflammation and oxidative stress induced by the antipyretic drug acetaminophen (APAP). Our study was the first to examine the interactive effects of APAP and inflammation in zebrafish embryos and how the treatments affect brain development and larval behavior. Experimental groups of zebrafish larvae were exposed to lipopolysaccharide (LPS) to induce inflammation, APAP, or LPS + APAP and larval behavior was analyzed using Ethovision automated behavioral tracking software. We also measured changes in whole-brain Glycogen Synthase Kinase 3 Beta (GSK3B) and GSK3B phosphorylation, …