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Articles 1 - 8 of 8
Full-Text Articles in Biology
Local Adaptation Signatures In Thermal Performance Of The Temperate Coral Astrangia Poculata, Hannah Elise Aichelman
Local Adaptation Signatures In Thermal Performance Of The Temperate Coral Astrangia Poculata, Hannah Elise Aichelman
Biological Sciences Theses & Dissertations
The Northern Star Coral (Astrangia poculata) is an understudied temperate scleractinian coral that provides unique opportunities to understand the roles of phenotypic plasticity and local adaptation in coral physiological tolerance limits. Astrangia poculata inhabits hard bottom ecosystems from the northwestern Atlantic to the Gulf of Mexico and withstands an annual temperature range up to 20°C. Additionally, A. poculata is facultatively symbiotic and co-occurs in both symbiotic (“brown”) and aposymbiotic (“white”) states. Here, brown and white A. poculata were collected from Virginia (VA) and Rhode Island (RI), USA and exposed to heat (18-32°C) and cold (18-6°C) temperature assays during …
Zika Modulates Arthropod Histone Methylation In Mosquito Cells, Telvin Lee Harrell
Zika Modulates Arthropod Histone Methylation In Mosquito Cells, Telvin Lee Harrell
Biological Sciences Theses & Dissertations
Epigenetics is the heritable series of covalent modifications that affect chromatin structure, gene expression, and protein function. Methylation is one such epigenetic modification that involves the addition of chemical modifying entities, such as methyl groups, on nucleic acids or proteins. Recent studies have reported that Zika virus (ZIKV) modulates methylation of human and viral RNA important for its replication in vertebrate cells. However, little is known whether ZIKV exerts methylation in arthropod vectors. In this study, I show that ZIKV modulates S-adenosyl methionine (SAMe) synthase, an enzyme involved in the production of SAMe, and histone methylation for its survival in …
Potential Interaction Analysis Of Offshore Wind Energy Areas And Breeding Avian Species On The Us Mid-Atlantic Coast, Jeri Lynn Wisman
Potential Interaction Analysis Of Offshore Wind Energy Areas And Breeding Avian Species On The Us Mid-Atlantic Coast, Jeri Lynn Wisman
Biological Sciences Theses & Dissertations
Due to increasing US interest in developing wind energy sites in offshore waters, we synthesized existing data on colonial breeding seabird populations with the potential risk of interacting with lease areas in the mid-Atlantic. Previous efforts by BOEM and NOAA have predicted avian density using at-sea survey data; we seek to complement this work by focusing specifically on birds during the critical and energetically demanding breeding life history stage. We combined colony size and location for each species along the mid-Atlantic coast with buffers around the colonies that correlate with the species’ foraging range. We integrated population size, vulnerability to …
Identifying Marine Key Biodiversity Areas In The Greater Caribbean Region, Michael S. Harvey
Identifying Marine Key Biodiversity Areas In The Greater Caribbean Region, Michael S. Harvey
Biological Sciences Theses & Dissertations
Anthropocene biodiversity extinction rates are increasing, suggesting a possible sixth global mass extinction event. Biological conservation planners are consequently seeking ways to more effectively protect species at national, regional and global scales. In 2010, the Convention on Biological Diversity (CBD) issued a number of conservation goals (Aichi Targets), including the establishment of protected areas (PA) in terrestrial, freshwater and marine areas of eminent conservation concern by 2020 to reduce and eventually eliminate species’ extinctions, as well as preserve hotspots of biodiversity and dynamic ecosystems. While well-established, adequately enforced PAs increase the likelihood of preserving species and habitats most at risk …
Differential Gene Expression In Response To Hypoxia And Acidosis In Chest Wall Deformities And Chondrosarcoma, Jamie L. Durbin
Differential Gene Expression In Response To Hypoxia And Acidosis In Chest Wall Deformities And Chondrosarcoma, Jamie L. Durbin
Biological Sciences Theses & Dissertations
The importance of understanding how costal cartilage chondrocytes respond to stimuli such as oxidative stress and low pH has been largely overlooked in studies involving tissue culturing due to major differences between oxygen and pH levels during incubation and the natural environment of hyaline cartilage. Hyaline cartilage is avascular and naturally hypoxic which subsequently leads to increased glycolytic metabolism and ultimately causes a decrease in extracellular pH. To examine how healthy costal cartilage responds to these extreme growth conditions, we examined responses in three hyaline cartilage diseases. Our ability to identify the disease mechanisms responsible for pectus excavatum, pectus carinatum, …
3d Bioprinting Systems For The Study Of Mammary Development And Tumorigenesis, John Reid
3d Bioprinting Systems For The Study Of Mammary Development And Tumorigenesis, John Reid
Electrical & Computer Engineering Theses & Dissertations
Understanding the microenvironmental factors that control cell function, differentiation, and stem cell renewal represent the forefront of developmental and cancer biology. To accurately recreate and model these dynamic interactions in vitro requires both precision-controlled deposition of multiple cell types and well-defined three-dimensional (3D) extracellular matrix (ECM). To achieve this goal, we hypothesized that accessible bioprinting technology would eliminate the experimental inconsistency and random cell-organoid formation associated with manual cell-matrix embedding techniques commonly used for 3D, in vitro cell cultures. The first objective of this study was to adapt a commercially-available, 3D printer into a 3D bioprinter. Goal-based computer simulations were …
Molecular Candidates For Blocking The Transmission Of Vector-Borne Diseases, Ashish Naresh Vora
Molecular Candidates For Blocking The Transmission Of Vector-Borne Diseases, Ashish Naresh Vora
Biological Sciences Theses & Dissertations
Vector-borne diseases (VBDs) require urgent attention as they have a high mortality rate, with 700,000 people dying in a year as of 2017. So far, extremely few reliable vaccination strategies and solutions have emerged. Transmission blocking vaccines are one among many solutions available to manage the control of VBDs. These require identification of both vector and pathogen molecules that play important roles in the transmission, dissemination and establishment of VBDs. Our strategy is to characterize these candidates that play important roles in vector-host-pathogen interactions. This manuscript presents two such studies identifying the participation of two arthropod molecules in vector-host-pathogen interactions. …
Lack Of Delayed-Type Hypersensitivity In Striped Bass (Morone Saxatilis), Jessica Shannon Miller
Lack Of Delayed-Type Hypersensitivity In Striped Bass (Morone Saxatilis), Jessica Shannon Miller
Biological Sciences Theses & Dissertations
Mycobacteriosis is a fatal disease in fishes caused by acid-fast bacteria in the genus Mycobacterium. This disease impacts aquaculture, aquariums, and wild fishes. Unfortunately, there are currently no non-lethal diagnostic tests for mycobacterial infection in fishes. Type IV delayed type hypersensitivity (DTH) responses in vivo and in vitro are currently used for the non-lethal detection of mycobacterial infections in humans and in animals; however, there is little information available on DTH responses in fishes. In this work, we examine in vivo DTH response in Striped Bass (Morone saxatilis), an important U.S. Eastern seaboard fish species, experimentally …