Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"population genomic"”.
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Population Genomic And Phenotypic Diversification In African Reed Frogs
… all levels of biological organization, from populations to species, communities, and biomes. At each of these levels, extrinsic mechanisms like climate are interacting with organismal traits like dispersal ability to shape global patterns of species diversity and to drive phenotypic …
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Comparative and population genomic analyses of the parasitic blood flukes
… thesis, I first present the results of the first genomic study investigating the potential impact of long-term mass-drug administration (MDA) on Schistosoma mansoni populations, examining these populations from within Uganda with contrasting histories of past drug pressure, and sampling both pre- …
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A Population Genomic Study of Mutton Snapper (Lutjanus analis) Throughout Florida and the Caribbean
… combined with Hi-C scaffolding and applied in population genomic analysis. Mutton snapper (total sample size 724) were collected between 2021 and 2025 from coastal waters off Belize, Puerto Rico, St. Thomas, Martinique, and three areas around the Florida peninsula. Samples were assayed using …
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INVESTIGATION OF THE MIALOME OF IXODES SCAPULARIS REPLETE TICKS AND UNDERSTANDING THE POPULATION GENOMIC STRUCTURE OF IXODES PACIFICUS TICKS
… (SNP) analysis. Our data suggest two ancestral population of I. pacificus and high gene flow among populations. Our data also agrees with current pathogen prevalence data and suggests higher transmission rates in some counties than others. Once complete, these data will greatly increase our …
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Population Genomics of Polistes Wasps
… steps taken to generate a high quality population genomic data set for primitively eusocial paper wasps in the genus Polistes. The third chapter of the thesis uses the dataset generated in chapter two to estimate patterns of natural selection on the Polistes genome, and to evaluate the …
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Parallel and Nonparallel Patterns of Genetic Co-Differentiation: Evidence for Host Associated Differentiation Among Trophic Levels of the Oak Gall Wasp System
Populations of phytophagous insects whose life cycles are intimately related to their host plants can express host-associated differentiation (HAD) in the form of genetic divergence and/or RI isolation across alternative host plants. In this work, we ask if HAD cascades to higher trophic levels in …
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Sequence capture as a tool to understand the genomic basis for adaptation in angiosperm and gymnosperm trees
… genetic variation both within and among populations. Despite their importance, research in forest trees has been underrepresented majorly due to their large and complex genome and scarce funding. However, recent climate change and other associated problems such as insect outbreaks, …
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Rarity, cause or consequence: comparative landscape genomics of six lichenized fungi with contrasting range sizes, life histories, and morphologies
… Using a comparative framework, we examined the population and landscape genetic patterns associated with rarity in related widespread and range-restricted lichenized fungi sampled throughout the Appalachian Mountains of eastern North America. This research produced robust genomic datasets for …
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Ecological genomics of mutualism decline in nitrogen-fixing bacteria
… or breakdown of mutualistic interactions. The genomic regions underpinning mutualism evolution, and how natural selection acts differently on these regions depending on the environment, are generally unknown, though such information can shed light on the forces that maintain cooperation in …
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The eco-evolutionary dynamics of extrachromosomal elements in environmental vibrio
… and dynamics among ecologically structured host populations in the wild remains poorly understood. Here we take a population-genomic approach to determine carriage of different types of ECEs in a recently established model for ecologically and genetically cohesive bacterial populations, asking …
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(Re)presenting Human Population Database Projects: virtually designing and siting biomedical informatics ventures
… that propose to create large-scale human population genomic databases to study complex, common diseases and conditions. These projects were initiated in different nations (US, UK, and Iceland), created under different institutional configurations, and are at various stages of development. …
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Genomic Selection, Quantitative Trait Loci and Genome-Wide Association Mapping for Spring Bread Wheat (Triticum aestivum L.) Improvement
… controlled by many QTL with small effects. Genomic selection (GS) is suggested to overcome the limitation of MAS and improve genetic gain of quantitative traits. GS is a type of MAS that estimates the effects of genome-wide markers to calculate genomic estimated breeding values (GEBVs) for …
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Using Museomics to Investigate Extinction and Decline in British Butterflies
… data for many species, studies on metrics of genomic erosion in insects are scarce. In the Natural History Museum in London and the Oxford University Museum of Natural History, there are over 69.5 million specimens across their botanical, zoological and entomological collections. Museum …
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Coral adaptations across ecological and evolutionary scales
… and small (e.g., different depths) scales. Populations that exist across these environments might be adapted to local conditions and exhibit genetic divergence between habitats, sometimes to the point of becoming different species or lineages within a species complex. Corals are excellent …
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Evolutionary Genomics of Cystic Fibrosis and Nosocomial Pathogens of the Mycobacterium abscessus species complex
… The overall aim of this project was to use genomic analyses to increase our understanding of how the MABSC has evolved to become an opportunistic pathogen, which in turn could potentially uncover promising targets for the development of novel antibiotics. Genomic analysis of the MABSC has …
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Deconvoluting genetic variants associated with aortic disease using stem cell models
… technologies. However, a critical challenge in genomic medicine is determining which variants identified by whole genome sequencing are causal for disease. Identifying causal variants aids disease diagnosis, prognostication, and determination of cascade screening requirements. This study aimed …
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Dispersal, gene flow, niche divergence and local adaptation in the hyper-diverse ruschioid Aizoaceae: testing alternative modes of speciation in the Knersvlakte quartz field flora of the Succulent Karoo, South Africa
… may have been facilitated by divergence of populations isolated on these 'environmental islands' in a similar fashion to serpentine systems such as those in California - and continues from previous work on the Knersvlakte-endemic ruschioid genus Argyroderma which supported an adaptive …
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Geographic patterns of speciation in West and Central Africa: The role of rivers, mountains, and refugia
… Africa and by using a combination of phylogenomic, population genomic, demographic and niche modeling analyses to gain a better understanding of the responses of West and Central African taxa to the major climatic and geographic events shaping African rainforest biota. Chapter 1 examines …
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A Genomics Approach to Conservation, Systematics, and Phylogeography to Understand Two Lineages of Lamiales
<p>Research using genomic DNA data is increasingly important in understanding and conservingbiodiversity. This work considers two lineages of Lamiales of very different scales: a tribe with hundreds of species from across the tropics, and a single, rare species that is narrowly endemic and native …
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Assessing genomic variation in the hopbush, Dodonaea viscosa, to investigate micro-evolution and adaptation
In this thesis I use a range of genomic tools in order to investigate aspects of the evolutionary history of the hopbush, Dodonaea viscosa (L.) Jacq. (hopbush). Understanding the past evolutionary processes that have led to the distribution and adaptation of contemporary populations can help to …
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