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 18 of 18 for “"founder effects"”.
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Evidence of Entrepreneurial Resources: Firm Founder Effects on the Performance, Governance, and Product Level of the Firm at Initial Public Offering
… has not adequately addressed this variance; (3) founders are involved in the top management of firms at IPO in various roles (employee and board of directors) with varying equity positions; and (4) evidence for the influence of founders in top management at IPO on important performance and …
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Dialect formation in fragmented populations of the endangered North Island kokako (Callaeas wilsoni)
… song cultures, social divergence and landscape effects on conservation from a behavioural perspective. Song sharing and comparisons of acoustic characteristics were used to reconstruct associations of song traditions and acoustic traits at both macrogeographic and microgeographic levels in the …
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Comparative Genomics Insights into Speciation and Evolution of Hawaiian Drosophila
… questions as the role of adaptive changes, founder effects (small effective population size in isolation), and genetic admixture during speciation.
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Lost in translation: Linking technology to market opportunities in technology-based ventures
… opportunity literature to examine the effects of founders’ prior experience and level of expertise on the technology-driven search process. I find that founder effects are quite different for experiential search for market opportunities, when compared to opportunity identification. The …
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Protein polymorphism in northern populations of field mice (Apodemus sylvaticus L.)
… most from the rest. It is suggested that chance founder effects is the chief factor for the uneven/uneven distribution of protein markers. The phvsicochemical characters of proteins in Apodemus sylvatcus are similar to those established for other rodents.
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GENETIC DIVERSITY AND LINKAGE DISEQUILIBRIUM IN WILD SOYBEAN, LANDRACES, ANCESTRAL, AND ELITE SOYBEAN POPULATIONS
Domestication, founder effects, and artificial selection can impact populations by reducing genome diversity and increasing the extent of linkage disequilibrium (LD). To understand the impact of these genetic bottlenecks and selection on sequence diversity and LD within soybean [Glycine max (L.) …
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Genetic characterization of families with von Willebrand disease
… exist for type 1 VWD in Sweden, which suggests founder effects. The Y1584C variation is not as common in the Swedish type 1 VWD population as it is in some other populations. We confirmed that blood group O is over-represented among type 1 VWD patients in Sweden. Apart from certain …
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Conservation genetics of Australian quolls
… quolls restricted to islands. Evidence of founder effects were detected in translocated island, but not in translocated mainland populations, emphasizing that greater losses in genetic diversity occur on islands compared to mainland populations due to isolation from sources of gene flow. In …
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An experimental demographic approach to exotic plant success: <b>Cynoglossum officinale</b> in its native and introduced ranges
… populations, suggesting an important role for founder effects. From demographic data collected in each range, I found that both survival and growth were higher in the introduced range, where size at flowering was larger and iteroparity more common. Since iteroparity conferred higher fitness in …
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An experimental demographic approach to exotic plant success: <b>Cynoglossum officinale</b> in its native and introduced ranges
… populations, suggesting an important role for founder effects. From demographic data collected in each range, I found that both survival and growth were higher in the introduced range, where size at flowering was larger and iteroparity more common. Since iteroparity conferred higher fitness in …
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Familial hypercholesterolaemia - the Cape Town experience
… with particular emphasis on South African founder effects is given. Lipoprotein metabolism is briefly reviewed to enable a better understanding of the pathology and complications of the disease. Demographics of patients attending the clinic, their clinical signs, lipid profiles and …
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Characterizing Patterns Of Round Goby (Neogobius Melanostomus) Distribution Using Morphometrics, Occupancy Modeling, And Population Genetics
… shorelines. This dissertation (1) examined the effects of distance in affecting round goby invasion and the native pumpkinseed sunfish Lepomis gibbosus population along the lake shoreline as reflected by morphological differences, (2) estimated the co-occupancy of round goby and native benthic …
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Population genetics of the Illinois chorus frog (Pseudacris illinoensis)
… the ICF, further exacerbating genetic drift and founder effects. Additional population genetic work evaluating more loci and a larger number of ponds/samples, combined with a field study employing traditional tracking or mark/recapture methods will be necessary to better estimate genetic …
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Connectivity, metapopulation dynamics, and genetic structure of tiger salamanders in a heterogeneous landscape
… theory is neutral with respect to the effects of habitat heterogeneity on population processes. Landscape ecology approaches have begun to account for effects of habitat quality and matrix structure on occupancy and gene flow, but few empirical studies have integrated the area-isolation …
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Preliminary genealogical evidence for the Plakophilin-2 gene, PKP2 c.1162C>T founder mutation in cases with Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC)
… investigations of the pathogenic PKP2 c.1162C>T founder mutation which had previously been reported to occur within four 'unrelated' probands (6.2%) who selfidentified as Afrikaners and who also carried a common haplotype. Common evolutionary history suggests common haplotypes are linked to a …
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Ecology of plant-animal interactions during plant population expansion processes
… seed dispersal to mitigate the expected negative effects during rapid population expansion processes (founder effects) and promote colonization dynamics that guarantee the diversity of new forests. Both the combination of multiple sampling methods for ecological interactions together with the …
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Social Evolution in Action: Causes and Consequences
… during sexual maturation. I found that founder effects were a far better predictor of a population’s resilience than social evolutionary history. I conclude that long-term consequences of social evolution are unpredictable and that the resilience of a population will largely be predicted …
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Paleogenomics in the Americas: demography, adaptations, and resilience
… pathogens, and the long-lasting genomic effects of European contact. This work was made possible through the collaborative efforts of Northwest Coast First Nations. The first topic presented here focuses on the highly debated processes behind the initial peopling of the Americas and, more …