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Articles 1 - 10 of 10
Full-Text Articles in Life Sciences
Influence Of Season And Sex On Terrapene C. Carolina (Eastern Box Turtle) Movements: An Observation Of A Population In West Virginia, Nathalie Caroline Aall
Influence Of Season And Sex On Terrapene C. Carolina (Eastern Box Turtle) Movements: An Observation Of A Population In West Virginia, Nathalie Caroline Aall
Theses, Dissertations and Capstones
Environmental conditions influence box turtle movements on multiple temporal scales as they navigate their home ranges. This study focuses on the impacts of seasonal shift and sex on straight-line distances traveled, movements along elevations, and home range sizes in the Eastern Box Turtle, Terrapene c. carolina. Radio telemetry was used to track nine T. c. carolina (5 males; 4 females) from May to October 2010 at Beech Fork State Park in Wayne County, West Virginia. Turtles were tracked once a day at two-day intervals. At each turtle location, microhabitat variables recorded were relative humidity, soil and ground surface temperature, canopy …
Mechanisms Of Yttrium Oxide Toxicity In Hek293 Cells, Sravanthi Bodapati
Mechanisms Of Yttrium Oxide Toxicity In Hek293 Cells, Sravanthi Bodapati
Theses, Dissertations and Capstones
As a non-metal oxide, yttrium oxide (Y2O3) nanoparticles have numerous applications in chemical synthesis, mechanical polishing and as additives to drugs, cosmetics, varnishes and food. Recent data have suggested that these particles are capable of inducing oxidative stress and cytotoxicity in human endothelial cell lines. To examine the potential mechanisms of yttrium oxide toxicity, human embryonic kidney (HEK293) cells were exposed to 1, 5, 10, 50 and 100 μM of Y2O3 nanoparticles for 12, 24, 36 or 48 hr. We hypothesized that exposure of HEK293 kidney cells to Y2O3 nanoparticles would be associated with increased evidence of intracellular oxidative stress …
Altered Regulation Of Mitogen-Activated Protein Kinases And Glut4 Expression In Skeletal Muscle, Liver, Heart And Kidney Of Obese Zucker Rat, Sudarsanam Kundla
Altered Regulation Of Mitogen-Activated Protein Kinases And Glut4 Expression In Skeletal Muscle, Liver, Heart And Kidney Of Obese Zucker Rat, Sudarsanam Kundla
Theses, Dissertations and Capstones
Metabolic syndrome is characterized by insulin resistance and hyperglycemia. The molecular mechanism(s) underlying this alteration in skeletal muscle, liver, kidneys and heart in metabolic syndrome patients are presently unclear. Recent data have demonstrated that the p38and extracellular-signal-regulated kinases (ERK 1/2) - mitogen-activated protein kinase (MAPK) proteins may be involved in the regulation of (Glucose transporter type 4) GLUT4 expression levels. Other data have suggested that miRNA may also play a role. Purpose: The purpose of this study is to compare the tissue content, phosphorylation of protein kinases (AKT), p38, c-JUN Nterminal kinase(JNK), ERK1/2, GLUT4 and transcriptional factor Myocyte enhancer factor-2 …
A Virtual Phytosaur Endocast And Its Implications For Sensory System Evolution In Archosaurs, Waymon Holloway
A Virtual Phytosaur Endocast And Its Implications For Sensory System Evolution In Archosaurs, Waymon Holloway
Theses, Dissertations and Capstones
Due to the overall morphological similarities between the Triassic archosaurs of the order Phytosauria and extant crocodilians, most studies have assumed that the two shared similar lifestyles. Many studies involving phytosaurs have focused on the external cranial morphology of various taxa. Internal cranial anatomy has received relatively little attention. As a result, comparative morphology studies of the braincases interior, or endocast, of phytosaurs are an area of potential exploration. Just as modern medical Xray computed tomography (CT) can be used to create three-dimensional images of internal structures of living subjects, such technology offers a non-invasive means of studying the internal …
Rediscovering The Maryland Darter (Etheostoma Sellare), Tyler Russell Hern
Rediscovering The Maryland Darter (Etheostoma Sellare), Tyler Russell Hern
Theses, Dissertations and Capstones
The Maryland darter has not been observed since 1988. Historic populations were located in Deer Creek, Swan Creek, and Gashey’s Run all of which occur in the lower Susquehanna drainage. At these locations, specimens were collected or observed at the lowest riffle of the stream. Some researchers suggest this may be a large river darter. The Conowingo Dam complicates surveying below the facility due to the rapid fluctuations in water levels caused by regulation for power production. Surveying efforts included trawling in the mainstem, and visual surveys in the mainstem, and searching/sampling all historically known locations of Etheostoma sellare. During …
Effects Of Land Use In The Ohio River Basin On The Distribution Of Coliform And Antibiotic Resistant Bacteria In The Ohio River, Gene Chou
Theses, Dissertations and Capstones
Recent studies indicate that antibiotic resistant bacteria can be useful as indicators of water quality (1, 2, 5, 7, 8, 9, 10). Studies in our laboratory have shown that fecal pollution did not fully explain the distribution or the frequency of antibiotic resistant bacteria in the Ohio River (27, 28). Therefore, it is important to understand the factors that affect the distribution of antibiotic resistant bacteria in aquatic habitat. The purpose of this study was to examine the correlations between land use, water quality, and concentration of antibiotic resistant bacteria in the Ohio River. Mid-channel water samples were collected at …
Plesiosaur Body Shape And Its Impact On Hydrodynamic Properties, Courtney D. Richards
Plesiosaur Body Shape And Its Impact On Hydrodynamic Properties, Courtney D. Richards
Theses, Dissertations and Capstones
Despite the variability of cross-sectional body shape within Plesiosauria, its impact on plesiosaur buoyancy and stability has never been investigated. This study focused on Tatenectes, Cryptoclidus, and Muraenosaurus due to their variable body morphologies. Reconstructions were created based on measurements and photographs from fossil remains. The ability of computer models, based upon the reconstructions, to reach equilibrium after submersion, sink via lung deflation, and recover from a lateral roll was tested. For the computer models, Muraenosaurus was replaced with Thalassomedon, which had a similar morphology. Cryptoclidus and Thalassomedon recovered from submersion faster than Tatenectes. All models achieved negative buoyancy with …
The Little Coal River Improvement Project, West Virginia: An Initial Study Of Sediment, Bacteria And Benthic Macroinvertebrates, Emily Vargo
Theses, Dissertations and Capstones
The Little Coal River, located in southern West Virginia, has undergone many changes over the last few years in an effort to reverse the negative effects of various point source and non-point source pollutions. Marshall University, in cooperation with the West Virginia Department of Environmental Protection, Army Corp of Engineers, and the Coal River Group, has designed and implemented a plan for rehabilitation known as the Little Coal Improvement Project. Several improvement structures were strategically installed within the Little Coal River during the summer of 2007. The functions of these structures include sediment flushing and overall habitat improvement. Monitoring these …
Phylogenetic Analysis Of Blacknose Dace (Rhinichthys) In West Virginia Streams, Samantha Taylor
Phylogenetic Analysis Of Blacknose Dace (Rhinichthys) In West Virginia Streams, Samantha Taylor
Theses, Dissertations and Capstones
Blacknose dace (Rhinichthys) are one of the most common cyprinid fishes in eastern North America. They also have been a topic of debate for over 30 years because morphology-based systematics has failed to clearly define their taxa. Taxonomists classify the complex into two species and one subspecies: the eastern form, R. atratulus atratulus; and the western form R. obtusus obtusus, and southern form R. obtusus meleagris. This research uses the mitochondrial cytochrome b gene and genomic RAG 2 gene in a phylogenetic analysis to help clarify species relations according to differences between each current species. Maps have been created to …
Plastron Reduction And Associated Myology In Turtles, And Its Implications For Functional Morphology And Natural History, He Zhu
Theses, Dissertations and Capstones
This study seeks to understand the locomotor implications of plastron reduction in turtles through dissection, description and qualitative and quantitative analysis of muscle masses. A comparative study will be conducted between a turtle species with a reduced plastron (Chelydra serpentina) and a species with a full plastron (Trachemys scripta elegans) to gain a better understanding of how the reduced plastron in snapping turtles affects their myology and gait. Quantitative data on muscular mass and length will be obtained for statistical comparison between the two clades. Data collected will be used to make inferences on gait, stance and natural history.