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Coevolutionary Methods Enable Robust Design Of Modular Repressors By Reestablishing Intra-Protein Interactions, Xian-Li Jiang, Rey P. Dimas, Clement T.Y. Chan, Faruck Morcos Dec 2021

Coevolutionary Methods Enable Robust Design Of Modular Repressors By Reestablishing Intra-Protein Interactions, Xian-Li Jiang, Rey P. Dimas, Clement T.Y. Chan, Faruck Morcos

Biology Faculty Publications and Presentations

enetic sensors with unique combinations of DNA recognition and allosteric response can be created by hybridizing DNA-binding modules (DBMs) and ligand-binding modules (LBMs) from distinct transcriptional repressors. This module swapping approach is limited by incompatibility between DBMs and LBMs from different proteins, due to the loss of critical module-module interactions after hybridization. We determine a design strategy for restoring key interactions between DBMs and LBMs by using a computational model informed by coevolutionary traits in the LacI family. This model predicts the influence of proposed mutations on protein structure and function, quantifying the feasibility of each mutation for rescuing hybrid …


Applying Behavioral And Physiological Measures To Assess The Relative Impact Of The Prolonged Covid-19 Pandemic Closure On Two Mammal Species At The Oregon Zoo: Cheetah (A. Jubatus) And Giraffe (G. C. Reticulata And G. C. Tippelskirchii), Laurel Fink, Candace D. Scarlata, Becca Vanbeek, Todd Bodner, Nadja C. Wielebnowski Dec 2021

Applying Behavioral And Physiological Measures To Assess The Relative Impact Of The Prolonged Covid-19 Pandemic Closure On Two Mammal Species At The Oregon Zoo: Cheetah (A. Jubatus) And Giraffe (G. C. Reticulata And G. C. Tippelskirchii), Laurel Fink, Candace D. Scarlata, Becca Vanbeek, Todd Bodner, Nadja C. Wielebnowski

Biology Faculty Publications and Presentations

The effect of visitor presence on zoo animals has been explored in numerous studies over the past two decades. However, the opportunities for observations without visitors have been very limited at most institutions. In 2020, the Oregon Zoo was closed, in response to the global SARSCoV-2 (COVID-19) pandemic, from 15 March 2020 to 12 July 2020, resulting in approximately four consecutive months without visitor presence. This study aimed to quantify potential behavioral and hormonal changes expressed during two transition periods in zoo visitor attendance: the initial time period before and after closure in March 2020 and time before and after …


Automatic Camera Trap Classification Using Wildlife-Specific Deep Learning In Nilgai Management, Matthew Kutugata, Jeremy Baumgardt, John A. Goolsby, Alexis Racelis Dec 2021

Automatic Camera Trap Classification Using Wildlife-Specific Deep Learning In Nilgai Management, Matthew Kutugata, Jeremy Baumgardt, John A. Goolsby, Alexis Racelis

Biology Faculty Publications and Presentations

Camera traps provide a low-cost approach to collect data and monitor wildlife across large scales but hand-labeling images at a rate that outpaces accumulation is difficult. Deep learning, a subdiscipline of machine learning and computer science, has been shown to address the issue of automatically classifying camera trap images with a high degree of accuracy. This technique, however, may be less accessible to ecologists, to small scale conservation projects, and has serious limitations. In this study, a simple deep learning model was trained using a dataset of 120,000 images to identify the presence of nilgai Boselaphus tragocamelus, a regionally specific …


Commentary: The Past, Present, And Future Of The Global Raptor Impact Network, James R. Belthoff, Julie A. Heath Dec 2021

Commentary: The Past, Present, And Future Of The Global Raptor Impact Network, James R. Belthoff, Julie A. Heath

Biology Faculty Publications and Presentations

Most raptor populations are declining and nearly a fifth are threatened with extinction; thus there is a need to increase collaboration to ensure efficient and effective research, management, and conservation. Here, we introduce the Global Raptor Impact Network (GRIN; www.globalraptors.org), a tool to enhance collaboration and conservation impact of the raptor research community. We provide an overview of the history and current state of GRIN, including plans for expansion. Predecessors to GRIN include The African Raptor DataBank, which was launched in 2012 to ascertain the conservation status of raptors across Africa; and the Global Raptor Information Network, which was launched …


Expanding The Conservation Genomics Toolbox: Incorporating Structural Variants To Enhance Genomic Studies For Species Of Conservation Concern, Stephanie J. Galla Dec 2021

Expanding The Conservation Genomics Toolbox: Incorporating Structural Variants To Enhance Genomic Studies For Species Of Conservation Concern, Stephanie J. Galla

Biology Faculty Publications and Presentations

Structural variants (SVs) are large rearrangements (>50 bp) within the genome that impact gene function and the content and structure of chromosomes. As a result, SVs are a significant source of functional genomic variation, that is, variation at genomic regions underpinning phenotype differences, that can have large effects on individual and population fitness. While there are increasing opportunities to investigate functional genomic variation in threatened species via single nucleotide polymorphism (SNP) data sets, SVs remain understudied despite their potential influence on fitness traits of conservation interest. In this future-focused Opinion, we contend that characterizing SVs offers the conservation genomics …


Examining The Role Of Buzzing Time And Acoustics On Pollen Extraction Of Solanum Elaeagnifolium, Mandeep Tayal, Rupesh R. Kariyat Nov 2021

Examining The Role Of Buzzing Time And Acoustics On Pollen Extraction Of Solanum Elaeagnifolium, Mandeep Tayal, Rupesh R. Kariyat

Biology Faculty Publications and Presentations

Buzz pollination is a specialized pollination syndrome that requires vibrational energy to extract concealed pollen grains from poricidal anthers. Although a large body of work has examined the ecology of buzz pollination, whether acoustic properties of buzz pollinators affect pollen extraction is less understood, especially in weeds and invasive species. We examined the pollination biology of Silverleaf nightshade (Solanum elaeagnifolium), a worldwide invasive weed, in its native range in the Lower Rio Grande Valley (LRGV) in south Texas. Over two years, we documented the floral visitors on S. elaeagnifolium, their acoustic parameters (buzzing amplitude, frequency, and duration of buzzing) and …


A Resource For Understanding And Evaluating Outcomes Of Undergraduate Field Experiences, Erin E. Shortlidge, Alison Jolley, Stephanie Shaulskiy, Emily Geraghty Ward, Christopher N. Lorentz, Kari O'Connell Nov 2021

A Resource For Understanding And Evaluating Outcomes Of Undergraduate Field Experiences, Erin E. Shortlidge, Alison Jolley, Stephanie Shaulskiy, Emily Geraghty Ward, Christopher N. Lorentz, Kari O'Connell

Biology Faculty Publications and Presentations

Undergraduate field experiences (UFEs) are a prominent element of science education across many disciplines; however, empirical data regarding the outcomes are often limited. UFEs are unique in that they typically take place in a field setting, are often interdisciplinary, and include diverse students. UFEs range from courses, to field trips, to residential research experiences, and thereby have the potential to yield a plethora of outcomes for undergraduate participants. The UFE community has expressed interest in better understanding how to assess the outcomes of UFEs. In response, we developed a guide for practitioners to use when assessing their UFE that promotes …


Pelagic Tunicate Grazing On Marine Microbes Revealed By Integrative Approaches, Kelly R. Sutherland, Anne W. Thompson Nov 2021

Pelagic Tunicate Grazing On Marine Microbes Revealed By Integrative Approaches, Kelly R. Sutherland, Anne W. Thompson

Biology Faculty Publications and Presentations

Marine microorganisms comprise a large fraction of ocean carbon and are central players in global biogeochemical cycling. Significant gaps remain, however, in our understanding of processes that determine the fate, distribution, and community structure of microbial communities. Protists and viruses are accepted as being part of the microbial loop and a source of microbial mortality. However, pelagic tunicates (salps, doliolods, pyrosomes, and appendicularians), which are abundant in oceanic and coastal environments and consume microorganisms with higher individual grazing rates than other common grazers, remain underappreciated in their role controlling microbial communities, distributions, and flux through ecosystems. In spite of sampling …


A Sugarcane G-Protein-Coupled Receptor, Shgpcr1, Confers Tolerance To Multiple Abiotic Stresses, Manikandan Ramasamy, Mona B. Damaj, Carol Vargas-Bautista, Victoria Mora, Jiaxing Liu, Carmen S. Padilla, Sonia Irigoyen, Tripti Saini, Nirakar Sahoo, Jorge A. Dasilva, Kranthi K. Mandadi Nov 2021

A Sugarcane G-Protein-Coupled Receptor, Shgpcr1, Confers Tolerance To Multiple Abiotic Stresses, Manikandan Ramasamy, Mona B. Damaj, Carol Vargas-Bautista, Victoria Mora, Jiaxing Liu, Carmen S. Padilla, Sonia Irigoyen, Tripti Saini, Nirakar Sahoo, Jorge A. Dasilva, Kranthi K. Mandadi

Biology Faculty Publications and Presentations

Sugarcane (Saccharum spp.) is a prominent source of sugar and serves as bioenergy/biomass feedstock globally. Multiple biotic and abiotic stresses, including drought, salinity, and cold, adversely affect sugarcane yield. G-protein-coupled receptors (GPCRs) are components of G-protein-mediated signaling affecting plant growth, development, and stress responses. Here, we identified a GPCR-like protein (ShGPCR1) from sugarcane and energy cane (Saccharum spp. hybrids) and characterized its function in conferring tolerance to multiple abiotic stresses. ShGPCR1 protein sequence contained nine predicted transmembrane (TM) domains connected by four extracellular and four intracellular loops, which could interact with various ligands and heterotrimeric G …


Bio-Acoustic Tracking And Localization Using Heterogeneous, Scalable Microphone Arrays, Erik Verreycken, Ralph Simon, Brandt Quirk-Royal, Walter Daems, Jesse Barber, Jan Steckel Nov 2021

Bio-Acoustic Tracking And Localization Using Heterogeneous, Scalable Microphone Arrays, Erik Verreycken, Ralph Simon, Brandt Quirk-Royal, Walter Daems, Jesse Barber, Jan Steckel

Biology Faculty Publications and Presentations

Microphone arrays are an essential tool in the field of bioacoustics as they provide a non-intrusive way to study animal vocalizations and monitor their movement and behavior. Microphone arrays can be used for passive localization and tracking of sound sources while analyzing beamforming or spatial filtering of the emitted sound. Studying free roaming animals usually requires setting up equipment over large areas and attaching a tracking device to the animal which may alter their behavior. However, monitoring vocalizing animals through arrays of microphones, spatially distributed over their habitat has the advantage that unrestricted/unmanipulated animals can be observed. Important insights have …


Pi3k Pathway Inhibition With Nvp-Bez235 Hinders Glycolytic Metabolism In Glioblastoma Multiforme Cells, Shreya Udawant, Carl Litif, Alma Lopez, Bonnie Gunn, Erin Schuenzel, Megan Keniry Nov 2021

Pi3k Pathway Inhibition With Nvp-Bez235 Hinders Glycolytic Metabolism In Glioblastoma Multiforme Cells, Shreya Udawant, Carl Litif, Alma Lopez, Bonnie Gunn, Erin Schuenzel, Megan Keniry

Biology Faculty Publications and Presentations

Glioblastoma (GBM) is the most lethal primary brain cancer that lacks effective molecular targeted therapies. The PI3K/AKT/mTOR pathway is activated in 90% of all Glioblastoma multiforme (GBM) tumors. To gain insight into the impact of the PI3K pathway on GBM metabolism, we treated U87MG GBM cells with NVP-BEZ235 (PI3K and mTOR a dual inhibitor) and identified differentially expressed genes with RNA-seq analysis. RNA-seq identified 7803 differentially regulated genes in response to NVP-BEZ235. Gene Set Enrichment Analysis (GSEA) identified two glycolysis-related gene sets that were significantly enriched (p < 0.05) in control samples compared to NVP-BEZ235-treated samples. We validated the inhibition of glycolytic genes by NVP-BEZ235 and examined the impact of the FOXO1 inhibitor (AS1842856) on these genes in a set of GBM cell lines. FOXO1 inhibition alone was associated with reduced LDHA expression, but not ENO1 or PKM2. Bioinformatics analyses revealed that PI3K-impacted glycolytic genes were over-expressed and co-expressed in GBM clinical samples. The elevated expression of PI3K-impacted glycolytic genes was associated with poor prognosis in GBM based on Kaplan–Meier survival analyses. Our results suggest novel insights into hallmark metabolic reprogramming associated with the PI3K-mTOR dual inhibition.


Morphological Characterization Of Trichomes Shows Enormous Variation In Shape, Density And Dimensions Across The Leaves Of 14 Solanum Species, Sakshi Watts, Rupesh R. Kariyat Nov 2021

Morphological Characterization Of Trichomes Shows Enormous Variation In Shape, Density And Dimensions Across The Leaves Of 14 Solanum Species, Sakshi Watts, Rupesh R. Kariyat

Biology Faculty Publications and Presentations

Trichomes are the epidermal appendages commonly observed on plant surfaces including leaves, stem and fruits. Plant trichomes have been well studied as a structural plant defence designed to protect plants against abiotic and biotic stressors such as UV rays, temperature extremities and herbivores. Trichomes are primarily classified into glandular and non-glandular trichomes, based on the presence or absence of a glandular head. The plant genus Solanum is the largest genus of family Solanaceae that houses ~3500 species of ecological and economic importance have a diverse set of trichomes that vary in density and morphology. However, due to the incomplete and …


Intraspecific Variation Mediates Density Dependence In A Genetically Diverse Plant Species, Andrii Zaiats, Matthew J. Germino, Marcelo D. Serpe, Bryce Richardson, T. Trevor Caughlin Nov 2021

Intraspecific Variation Mediates Density Dependence In A Genetically Diverse Plant Species, Andrii Zaiats, Matthew J. Germino, Marcelo D. Serpe, Bryce Richardson, T. Trevor Caughlin

Biology Faculty Publications and Presentations

Interactions between neighboring plants are critical for biodiversity maintenance in plant populations and communities. Intraspecific trait variation and genome duplication are common in plant species and can drive eco-evolutionary dynamics through genotype-mediated plant-plant interactions. However, few studies have examined how species-wide intraspecific variation may alter interactions between neighboring plants. We investigate how subspecies and ploidy variation in a genetically diverse species, big sagebrush (Artemisia tridentata), can alter the demographic outcomes of plant interactions. Using a replicated, long-term common garden experiment that represents range-wide diversity of A. tridentata, we ask how intraspecific variation, environment, and stand age mediate …


Golden Eagle Dietary Shifts Following Wildfire And Shrub Loss Have Negative Consequences For Nestling Survivorship, Julie A. Heath, Michael N. Kochert, Karen Steenhof Nov 2021

Golden Eagle Dietary Shifts Following Wildfire And Shrub Loss Have Negative Consequences For Nestling Survivorship, Julie A. Heath, Michael N. Kochert, Karen Steenhof

Biology Faculty Publications and Presentations

Wildfires and invasive species have caused widespread changes in western North America’s shrub-steppe landscapes. The bottom–up consequences of degraded shrublands on predator ecology and demography remain poorly understood. We used a before–after paired design to study whether Golden Eagle (Aquila chrysaetos) diet and nestling survivorship changed following wildfires in southwestern Idaho, USA. We assessed burn extents from 1981 to 2013 and vegetation changes between 1979 (pre-burn) and 2014 (post-burn) within 3 km of Golden Eagle nesting centroids. We measured the frequency and biomass of individual prey, calculated diet diversity indexes, and monitored nestling survivorship at 15 territories in …


A Draft Genome Provides Hypotheses On Drought Tolerance In A Keystone Plant Species In Western North America Threatened By Climate Change, Anthony E. Melton, James Beck, Stephanie J. Galla, Marcelo Serpe, Stephen Novak, Sven Buerki Nov 2021

A Draft Genome Provides Hypotheses On Drought Tolerance In A Keystone Plant Species In Western North America Threatened By Climate Change, Anthony E. Melton, James Beck, Stephanie J. Galla, Marcelo Serpe, Stephen Novak, Sven Buerki

Biology Faculty Publications and Presentations

Climate change presents distinct ecological and physiological challenges to plants as extreme climate events become more common. Understanding how species have adapted to drought, especially ecologically important nonmodel organisms, will be crucial to elucidate potential biological pathways for drought adaptation and inform conservation strategies. To aid in genome-to-phenome research, a draft genome was assembled for a diploid individual of Artemisia tridentata subsp. tridentata, a threatened keystone shrub in western North America. While this taxon has few genetic resources available and genetic/genomics work has proven difficult due to genetic heterozygosity in the past, a draft genome was successfully assembled. Aquaporin …


Desktop Scanning Electron Microscopy In Plant-Insect Interactions Research: A Fast And Effective Way To Capture Electron Micrographs With Minimal Sample Preparation, Sakshi Watts, Ishveen Kaur, Sukhman Singh, Bianca Jimenez, Jesus Chavana, Rupesh R. Kariyat Oct 2021

Desktop Scanning Electron Microscopy In Plant-Insect Interactions Research: A Fast And Effective Way To Capture Electron Micrographs With Minimal Sample Preparation, Sakshi Watts, Ishveen Kaur, Sukhman Singh, Bianca Jimenez, Jesus Chavana, Rupesh R. Kariyat

Biology Faculty Publications and Presentations

The ability to visualize cell and tissue morphology at a high magnification using scanning electron microscopy (SEM) has revolutionized plant sciences research. In plant-insect interactions studies, SEM based imaging has been of immense assistance to understand plant surface morphology including trichomes (plant hairs; physical defense structures against herbivores (Kaur and Kariyat, 2020a, 2020b; Watts and Kariyat, 2021), spines, waxes, and insect morphological characteristics such as mouth parts, antennae, and legs, that they interact with. While SEM provides finer details of samples, and the imaging process is simpler now with advanced image acquisition and processing, sample preparation methodology has lagged. The …


A Small Rna Is Functional In Escherichia Fergusonii Despite Containing A Large Insertion., Austin P. Wright, H. Auguste Dutcher, Brianna Butler, Timothy J. Nice, Rahul Raghavan Oct 2021

A Small Rna Is Functional In Escherichia Fergusonii Despite Containing A Large Insertion., Austin P. Wright, H. Auguste Dutcher, Brianna Butler, Timothy J. Nice, Rahul Raghavan

Biology Faculty Publications and Presentations

Bacterial small RNAs (sRNAs) are important regulators of gene expression; however, the impact of natural mutations on sRNA functions has not been studied extensively. Here we show that the sRNA MgrR contains a unique 53 bp insertion in Escherichia fergusonii, a close relative of Escherichia coli and Salmonella enterica. The insertion is a repetitive extragenic palindromic (REP) sequence that could block transcription, but full-length MgrR is produced in E. fergusonii, showing that the insertion has not affected sRNA production. Additionally, despite containing the large insertion, the sRNA appears to be functional because deletion of mgrR made E. fergusonii …


Ten Strategies For Avoiding And Overcoming Authorship Conflicts In Academic Publishing, S J. Cooke, N Young, M R. Donaldson, E A. Nyboer, D G. Roche, C L. Madliger, R J. Lennox, J M. Chapman, Zen Faulkes, J R. Bennett Oct 2021

Ten Strategies For Avoiding And Overcoming Authorship Conflicts In Academic Publishing, S J. Cooke, N Young, M R. Donaldson, E A. Nyboer, D G. Roche, C L. Madliger, R J. Lennox, J M. Chapman, Zen Faulkes, J R. Bennett

Biology Faculty Publications and Presentations

For better or for worse, authorship is a currency in scholarly research and advancement. In scholarly writing, authorship is widely acknowledged as a means of conferring credit but is also tied to concepts such as responsibility and accountability. Authorship is one of the most divisive topics both at the level of the research team and more broadly in the academy and beyond. At present, authorship is often the primary way to assert and receive credit in many scholarly pursuits and domains. Debates rage, publicly but mostly privately, regarding authorship. Here we attempt to clarify key concepts related to authorship informed …


Intra-Specific Variation In Migration Phenology Of American Kestrels (Falco Sparverius) In Response To Spring Temperatures, Breanna F. Powers, Jason M. Winiarski, Juan M. Requena-Mullor, Julie A. Heath Oct 2021

Intra-Specific Variation In Migration Phenology Of American Kestrels (Falco Sparverius) In Response To Spring Temperatures, Breanna F. Powers, Jason M. Winiarski, Juan M. Requena-Mullor, Julie A. Heath

Biology Faculty Publications and Presentations

In migratory birds, among- and within-species heterogeneity in response to climate change may be attributed to differences in migration distance and environmental cues that affect timing of arrival at breeding grounds. We used eBird observations and a within-species comparative approach to examine whether migration distance (with latitude as a proxy) and weather predictors can explain spring arrival dates at the breeding site in a raptor species with a widespread distribution and diverse migration strategies, the American Kestrel Falco sparverius. We found an interactive effect between latitude and spring minimum temperatures on arrival dates, whereby at lower latitudes (short-distance migrants) …


Weak Coupling Among Barrier Loci And Waves Of Neutral And Adaptive Introgression Across An Expanding Hybrid Zone, Mitchell Cruzan, Pamela G. Thompson, Nicolas Alexander Diaz, Elizabeth C. Hendrickson, Katie R. Gerloff, Katie A. Kline, Hannah M. Machiorlete, Jessica Persinger Oct 2021

Weak Coupling Among Barrier Loci And Waves Of Neutral And Adaptive Introgression Across An Expanding Hybrid Zone, Mitchell Cruzan, Pamela G. Thompson, Nicolas Alexander Diaz, Elizabeth C. Hendrickson, Katie R. Gerloff, Katie A. Kline, Hannah M. Machiorlete, Jessica Persinger

Biology Faculty Publications and Presentations

Hybridization can serve as an evolutionary stimulus, but we have little understanding of introgression at early stages of hybrid zone formation. We analyze reproductive isolation and introgression between a range-limited and a widespread species. Reproductive barriers are estimated based on differences in flowering time, ecogeographic distributions, and seed set from crosses. We find an asymmetrical mating barrier due to cytonuclear incompatibility that is consistent with observed clusters of coincident and concordant tension zone clines (barrier loci) for mtDNA haplotypes and nuclear SNPs. These groups of concordant clines are spread across the hybrid zone, resulting in weak coupling among barrier loci …


Authentication Of A Novel Antibody To Zebrafish Collagen Type Xi Alpha 1 Chain (Col11a1a), Jonathon C. Reeck, Makenna J. Hardy, Xinzhu Pu, Cynthia Keller-Peck, Julia Thom Oxford Sep 2021

Authentication Of A Novel Antibody To Zebrafish Collagen Type Xi Alpha 1 Chain (Col11a1a), Jonathon C. Reeck, Makenna J. Hardy, Xinzhu Pu, Cynthia Keller-Peck, Julia Thom Oxford

Biology Faculty Publications and Presentations

Objective: Extracellular matrix proteins play important roles in embryonic development and antibodies that specifically detect these proteins are essential to understanding their function. The zebrafish embryo is a popular model for vertebrate development but suffers from a dearth of authenticated antibody reagents for research. Here, we describe a novel antibody designed to detect the minor fibrillar collagen chain Col11a1a in zebrafish (AB strain).

Results: The Col11a1a antibody was raised in rabbit against a peptide comprising a unique sequence within the zebrafish Col11a1a gene product. The antibody was affinity-purified and characterized by ELISA. The antibody is effective for immunoblot and immunohistochemistry …


Detecting Forest Response To Droughts With Global Observations Of Vegetation Water Content, Alexandra G. Konings, Sassan S. Saatchi, Christian Frankenberg, Michael Keller, Victor Leshyk, William R. L. Anderegg, Vincent Humphrey, Ashley M. Matheny, Anna Trugman, Bradley O. Christoffersen Sep 2021

Detecting Forest Response To Droughts With Global Observations Of Vegetation Water Content, Alexandra G. Konings, Sassan S. Saatchi, Christian Frankenberg, Michael Keller, Victor Leshyk, William R. L. Anderegg, Vincent Humphrey, Ashley M. Matheny, Anna Trugman, Bradley O. Christoffersen

Biology Faculty Publications and Presentations

Droughts in a warming climate have become more common and more extreme, making understanding forest responses to water stress increasingly pressing. Analysis of water stress in trees has long focused on water potential in xylem and leaves, which influences stomatal closure and water flow through the soil-plant-atmosphere continuum. At the same time, changes of vegetation water content (VWC) are linked to a range of tree responses, including fluxes of water and carbon, mortality, flammability, and more. Unlike water potential, which requires demanding in situ measurements, VWC can be retrieved from remote sensing measurements, particularly at microwave frequencies using radar and …


Artificial Night Light And Anthropogenic Noise Interact To Influence Bird Abundance Over A Continental Scale, Ashley A. Wilson, Mark A. Ditmer, Jesse R. Barber, Neil H. Carter, Eliot T. Miller, Luke P. Tyrell, Clinton D. Francis Sep 2021

Artificial Night Light And Anthropogenic Noise Interact To Influence Bird Abundance Over A Continental Scale, Ashley A. Wilson, Mark A. Ditmer, Jesse R. Barber, Neil H. Carter, Eliot T. Miller, Luke P. Tyrell, Clinton D. Francis

Biology Faculty Publications and Presentations

The extent of artificial night light and anthropogenic noise (i.e., “light” and “noise”) impacts is global and has the capacity to threaten species across diverse ecosystems. Existing research involving impacts of light or noise has primarily focused on noise or light alone and single species; however, these stimuli often co-occur and little is known about how co-exposure influences wildlife and if and why species may vary in their responses. Here, we had three aims: (1) to investigate species-specific responses to light, noise, and the interaction between the two using a spatially explicit approach to model changes in abundance of 140 …


Biological Soil Crusts Of The Great Plains: A Review, Steven D. Warren, Roger Rosentreter, Nicole Pietrasiak Sep 2021

Biological Soil Crusts Of The Great Plains: A Review, Steven D. Warren, Roger Rosentreter, Nicole Pietrasiak

Biology Faculty Publications and Presentations

Biological soil crusts (BSCs), or biocrusts, are composed of fungi, bacteria, algae, and bryophytes (mosses, etc.) that occupy bare soil, entwining soil particles with filaments or rootlike structures and/or gluing them together with polysaccharide exudates to form a consolidated surface crust that stabilizes the soil against erosion. BSCs are common in arid and semiarid regions where vascular plant cover is naturally sparse, maximizing the exposure of surface-dwelling organisms to direct sunlight. Although less prominent and less studied there, BSC organisms are also present in more mesic areas such as the Great Plains where they can be found in shortgrass and …


Cellular Activity Of Salmonella Typhimurium Artab Toxin And Its Receptor-Binding Subunit, Elise Overgaard, Brad Morris, Omid Mohammad Mousa, Adriana Rodriguez, Leyla Cufurovic, Richard S. Beard, Juliette K. Tinker Sep 2021

Cellular Activity Of Salmonella Typhimurium Artab Toxin And Its Receptor-Binding Subunit, Elise Overgaard, Brad Morris, Omid Mohammad Mousa, Adriana Rodriguez, Leyla Cufurovic, Richard S. Beard, Juliette K. Tinker

Biology Faculty Publications and Presentations

Salmonellosis is among the most reported foodborne illnesses in the United States. The Salmonella enterica Typhimurium DT104 phage type, which is associated with multidrug-resistant disease in humans and animals, possesses an ADP-ribosylating toxin called ArtAB. Full-length artAB has been found on a number of broad-host-range non-typhoidal Salmonella species and serovars. ArtAB is also homologous to many AB5 toxins from diverse Gram-negative pathogens, including cholera toxin (CT) and pertussis toxin (PT), and may be involved in Salmonella pathogenesis, however, in vitro cellular toxicity of ArtAB has not been characterized. artAB was cloned into E. coli and initially isolated …


Complete Mitochondrial Genome Sequence Of The Gulf Coast Tick (Amblyomma Maculatum), Amanda E. Brenner, Rahul Raghavan Sep 2021

Complete Mitochondrial Genome Sequence Of The Gulf Coast Tick (Amblyomma Maculatum), Amanda E. Brenner, Rahul Raghavan

Biology Faculty Publications and Presentations

The complete circularized mitochondrial genome sequence of Amblyomma maculatum is 14,803 bp long. It encodes 13 protein coding genes, 2 rRNA genes, 22 tRNA genes, 2 tick box motifs, and 2 control regions. The gene arrangement and content are consistent with those of previously reported Metastriata tick mitochondrial genomes.


Dynamic Control Of Upper Limb Stretch Reflex In Wrestlers, Sho Ito, Kento Nakagawa, Tsuyoshi Nakajima, Misaki Iteya, Larry Crawshaw, Kazuyuki Kanosue Sep 2021

Dynamic Control Of Upper Limb Stretch Reflex In Wrestlers, Sho Ito, Kento Nakagawa, Tsuyoshi Nakajima, Misaki Iteya, Larry Crawshaw, Kazuyuki Kanosue

Biology Faculty Publications and Presentations

Purpose: The objective of this study was to clarify the characteristics of the upper limb stretch reflex in wrestlers.

Methods: Ten wrestlers and 11 control subjects participated in the study. The experiment was divided into two sessions. In the extension perturbation session, participants either relaxed or flexed the elbow when they felt a perturbation (abrupt elbow extension induced by a dynamometer). This was done 30 times by each subject for both sessions. In the flexion perturbation session, participants also relaxed or extended the elbow when they felt a perturbation (abrupt elbow flexion). During the tasks, the stretch reflex …


Relationships Between Animal Management And Habitat Characteristics With Two Potential Indicators Of Welfare For Bottlenose Dolphins Under Professional Care, Lance J. Miller, Lisa K. Lauderdale, Jill D. Mellen, Michael T. Walsh, Douglas A. Granger Aug 2021

Relationships Between Animal Management And Habitat Characteristics With Two Potential Indicators Of Welfare For Bottlenose Dolphins Under Professional Care, Lance J. Miller, Lisa K. Lauderdale, Jill D. Mellen, Michael T. Walsh, Douglas A. Granger

Biology Faculty Publications and Presentations

Accredited zoos and aquariums continually strive to ensure high levels of animal welfare for the animals under their professional care. Best management practices include conducting research to better understand factors that lead to optimal welfare and then turning findings into practice. The current study is part of the larger Cetacean Welfare Study or more formally, “Towards understanding the welfare of cetaceans in zoos and aquariums.” Facilities participating in the study were accredited by the Alliance of Marine Mammal Parks and Aquariums and/or the Association of Zoos and Aquariums. Animal management factors and habitat characteristics were examined in relation to two …


Health Reference Intervals And Values For Common Bottlenose Dolphins (Tursiops Truncatus), Indo-Pacific Bottlenose Dolphins (Tursiops Aduncus), Pacific White-Sided Dolphins (Lagenorhynchus Obliquidens), And Beluga Whales (Delphinapterus Leucas), Lisa K. Lauderdale, Michael T. Walsh, Kevin A. Mitchell, Douglas A. Granger, Jill D. Mellen, Lance J. Miller Aug 2021

Health Reference Intervals And Values For Common Bottlenose Dolphins (Tursiops Truncatus), Indo-Pacific Bottlenose Dolphins (Tursiops Aduncus), Pacific White-Sided Dolphins (Lagenorhynchus Obliquidens), And Beluga Whales (Delphinapterus Leucas), Lisa K. Lauderdale, Michael T. Walsh, Kevin A. Mitchell, Douglas A. Granger, Jill D. Mellen, Lance J. Miller

Biology Faculty Publications and Presentations

This study reports comprehensive clinical pathology data for hematology, serum, and plasma biochemistry reference intervals for 174 apparently healthy common bottlenose dolphins (Tursiops truncatus) and reference values for 27 Indo-Pacific bottlenose dolphins (Tursiops aduncus), 13 beluga whales (Delphinapterus leucas), and 6 Pacific white-sided dolphins (Lagenorhynchus obliquidens) in zoos and aquariums accredited by the Alliance for Marine Mammal Parks and Aquariums and the Association of Zoos & Aquariums. Blood samples were collected as part of a larger study titled “Towards understanding the welfare of cetaceans in zoos and aquariums” (colloquially called the Cetacean Welfare Study). Two blood samples were collected following …


Reference Intervals And Values For Fecal Cortisol, Aldosterone, And The Ratio Of Cortisol To Dehydroepiandrosterone Metabolites In Four Species Of Cetaceans, Lance J. Miller, Lisa K. Lauderdale, Michael T. Walsh, Jocelyn L. Bryant, Kevin A. Mitchell, Douglas A. Granger, Jill D. Mellen Aug 2021

Reference Intervals And Values For Fecal Cortisol, Aldosterone, And The Ratio Of Cortisol To Dehydroepiandrosterone Metabolites In Four Species Of Cetaceans, Lance J. Miller, Lisa K. Lauderdale, Michael T. Walsh, Jocelyn L. Bryant, Kevin A. Mitchell, Douglas A. Granger, Jill D. Mellen

Biology Faculty Publications and Presentations

The goal of the current study was to create reference intervals and values for several common and one potential novel physiological indicators of animal welfare for four species of cetaceans. The subjects included 189 bottlenose dolphins (Tursiops truncatus), 27 Indo-Pacific bottlenose dolphins (Tursiops aduncus), eight Pacific white-sided dolphins (Lagenorhynchus obliquidens), and 13 beluga whales (Delphinapterus leucas) at Alliance of Marine Mammal Parks and Aquariums and/or Association of Zoos and Aquariums accredited facilities. During two sampling time periods between July and November of 2018 and between January and April of 2019, fecal samples were collected weekly for five weeks from all …