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Artykuły w czasopismach na temat "Gene flow barrier"
Tavares, Hugo, Annabel Whibley, David L. Field, Desmond Bradley, Matthew Couchman, Lucy Copsey, Joane Elleouet i in. "Selection and gene flow shape genomic islands that control floral guides". Proceedings of the National Academy of Sciences 115, nr 43 (8.10.2018): 11006–11. http://dx.doi.org/10.1073/pnas.1801832115.
Pełny tekst źródłaBARTON, N. H. "The effect of a barrier to gene flow on patterns of geographic variation". Genetics Research 90, nr 1 (luty 2008): 139–49. http://dx.doi.org/10.1017/s0016672307009081.
Pełny tekst źródłaJoannon, B., C. Lavigne, H. Lecoq i C. Desbiez. "Barriers to Gene Flow Between Emerging Populations of Watermelon mosaic virus in Southeastern France". Phytopathology® 100, nr 12 (grudzień 2010): 1373–79. http://dx.doi.org/10.1094/phyto-04-10-0118.
Pełny tekst źródłaLaetsch, Dominik R., Gertjan Bisschop, Simon H. Martin, Simon Aeschbacher, Derek Setter i Konrad Lohse. "Demographically explicit scans for barriers to gene flow using gIMble". PLOS Genetics 19, nr 10 (10.10.2023): e1010999. http://dx.doi.org/10.1371/journal.pgen.1010999.
Pełny tekst źródłade Abreu Moreira, Patrícia, i G. Wilson Fernandes. "Is the São Francisco River a geographic barrier to gene flow in trees of Handroanthus ochraceus?" Journal of Tropical Ecology 29, nr 3 (19.04.2013): 243–50. http://dx.doi.org/10.1017/s0266467413000217.
Pełny tekst źródłaHu, Xin-Sheng. "Mating system as a barrier to gene flow". Evolution 69, nr 5 (maj 2015): 1158–77. http://dx.doi.org/10.1111/evo.12660.
Pełny tekst źródłaGross, Liza. "Autoimmunity: A Barrier to Gene Flow in Plants?" PLoS Biology 5, nr 9 (4.09.2007): e262. http://dx.doi.org/10.1371/journal.pbio.0050262.
Pełny tekst źródłaLessios, H. A. "A sea water barrier to coral gene flow". Molecular Ecology 21, nr 22 (29.10.2012): 5390–92. http://dx.doi.org/10.1111/mec.12037.
Pełny tekst źródłaGayden, Tenzin, Annabel Perez, Patrice J. Persad, Areej Bukhari, Shilpa Chennakrishnaiah, Tanya Simms, Trisha Maloney, Kristina Rodriguez i Rene J. Herrera. "The Himalayas: Barrier and conduit for gene flow". American Journal of Physical Anthropology 151, nr 2 (12.04.2013): 169–82. http://dx.doi.org/10.1002/ajpa.22240.
Pełny tekst źródłaChristmas, Matthew J., Julia C. Jones, Anna Olsson, Ola Wallerman, Ignas Bunikis, Marcin Kierczak, Valentina Peona i in. "Genetic Barriers to Historical Gene Flow between Cryptic Species of Alpine Bumblebees Revealed by Comparative Population Genomics". Molecular Biology and Evolution 38, nr 8 (6.04.2021): 3126–43. http://dx.doi.org/10.1093/molbev/msab086.
Pełny tekst źródłaRozprawy doktorskie na temat "Gene flow barrier"
Onparn, N. "Effectiveness of selfing as a barrier to gene flow in the Mimulus guttatus complex". Thesis, University of Exeter, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398968.
Pełny tekst źródłaBarreto, Felipe S. "Assortative mating as a barrier to gene flow in a coral reef fish species flock /". Electronic version (PDF), 2003. http://dl.uncw.edu/etd/2003/barretof/felipebarreto.pdf.
Pełny tekst źródłaFlor, Matthias. "Unidirectional CI and the consequences of Wolbachia for gene flow and reinforcement". Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2011. http://dx.doi.org/10.18452/16312.
Pełny tekst źródłaThe intracellular bacterial parasites of the genus Wolbachia are widespread among arthropod species. In many hosts, they induce a reproductive incompatibility between uninfected females and infected males. The potential role of this cytoplasmic incompatibility in speciation processes of the bacteria''s hosts has long been debated. In this thesis, we analyze common criticisms of such a role by means of mathematical models, combining Wolbachia infection dynamics and host population genetics. In particular, we are concerned with the following: (i) In order to measure the stability of infection patterns within host metapopulations, we derive critical migration rates. (ii) We evaluate the impact of cytoplasmic incompatibility on gene flow between populations by calculating effective migration rates. (iii) We determine the conditions that favor the evolution of female mating preferences through reinforcement. Finally, (iv) we apply our models to a particular real-world speciation process of two sibling Drosophila species in North America, discuss emerging problems, and suggest future directions of research. In summary, our results implicate that Wolbachia might be a frequent factor in host speciation, but usually only by contributing to overall reproductive isolation among other factors. Reinforcement of premating isolation is selected for only under stringent conditions.
Figueira, Cláudia Alexandra Rodrigues Marques. "Comparison of different methods to detect genetic barriers in a small mammal population". Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/15871.
Pełny tekst źródłaHabitat fragmentation and the consequently the loss of connectivity between populations can reduce the individuals interchange and gene flow, increasing the chances of inbreeding, and the increase the risk of local extinction. Landscape genetics is providing more and better tools to identify genetic barriers.. To our knowledge, no comparison of methods in terms of consistency has been made with observed data and species with low dispersal ability. The aim of this study is to examine the consistency of the results of five methods to detect barriers to gene flow in a Mediterranean pine vole population Microtus duodecimcostatus: F-statistics estimations, Non-Bayesian clustering, Bayesian clustering, Boundary detection and Simple/Partial Mantel tests. All methods were consistent in detecting the stream as a non-genetic barrier. However, no consistency in results among the methods were found regarding the role of the highway as a genetic barrier. Fst, Bayesian clustering assignment test and Partial Mantel test identifyed the highway as a filter to individual interchange. The Mantel tests were the most sensitive method. Boundary detection method (Monmonier’s Algorithm) and Non-Bayesian approaches did not detect any genetic differentiation of the pine vole due to the highway. Based on our findings we recommend that the genetic barrier detection in low dispersal ability populations should be analyzed with multiple methods such as Mantel tests, Bayesian clustering approaches because they show more sensibility in those scenarios and with boundary detection methods by having the aim of detect drastic changes in a variable of interest between the closest individuals. Although simulation studies highlight the weaknesses and the strengths of each method and the factors that promote some results, tests with real data are needed to increase the effectiveness of genetic barrier detection.
A fragmentação do habitat e a consequente perda da conectividade entre populações pode reduzir o intercâmbio de indivíduos e consequentemente o fluxo genético, aumentando as hipóteses de ocorrer consanguinidade e consequentemente aumentar o risco de extinção local. A disciplina da genética da paisagem fornece cada vez mais e melhores ferramentas para detectar barreiras genéticas. No entanto, não se conhecem até à data, comparações de métodos em termos de consistência de resultados com dados observados e espécies com reduzida capacidade de dispersão. O objectivo deste estudo é avaliar a consistência dos resultados de cinco métodos de análise do papel da auto-estrada e de um rio como barreira ao fluxo genético numa população de rato-cego-mediterrânico Microtus duodecimcostatus: estimativas do Festatistico, método de aglomeração não-Bayesianos, métodos de aglomeração Bayesianos, método de detecção de fronteiras (algoritmo Monmonier) e o teste Mantel simples e parcial. Todos os métodos testados foram consistentes em considerar o rio como uma não barreira genética ao rato-cego-mediterrânico. No entanto, não houve consistência nos resultados quanto ao papel da autoestrada como barreira genética. As estimativas do F-estatistico, os métodos de aglomeração Bayesianos e o teste de Mantel parcial que mostram que a autoestrada pode estar a funcionar como um filtro ao movimento dos indivíduos entre os dois lados da estrutura. Os métodos de deteção de fronteiras (algoritmo Monmonier) e de aglomeração não-Bayesiano não detectaram diferenciação genética nas populações de rato-cego-mediterrâneo devido à estrada. Com base nos nossos resultados nós recomendamos a aplicação dos testes de Mantel, os métodos de aglomeração Bayesianos e dos métodos de detecção de fronteiras para esclarecer o papel dos atributos da paisagem como barreiras genéticas uma vez que, todos foram capazes de detectar barreiras mas não obtiveram resultados similares. Apesar dos estudos com base em simulações apontarem as vantagens e desvantagens de cada método e os fatores que associados aos resultados, é necessário que se façam testes com base em dados reais para que sejam mais eficazes na detecção de barreiras genéticas.
Fraïsse, Christelle. "Génétique de l’adaptation et de la spéciation : théorie et analyse de données de séquençage haut-débit dans le complexe d’espèces Mytilus edulis". Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20107/document.
Pełny tekst źródłaGenomes are affected by conflicting selective regimes. This is particularly well illustrated by the concept of semi-permeable barriers to gene flow, as found in the hybrid zones literature. Some genes contribute to the prevention of mixing between differentiated genetic lineages, either because they are involved in adaptation to local environmental conditions, or because they are incompatible with alleles from other genetic lineages. Other parts of the genome are either neutral, or subjected to selection which tends to homogenize the genetic lineages. In the first part of this thesis, models of the evolution of reproductive isolation are presented to explain the isolation patterns observed in experimental hybridizing crosses between incipient species. Using standard models of Dobzhansky-Muller genetic incompatibilities, it is shown that the asymmetry and complexity of incompatibilities are not well explained by there being an “evolutionary sieve”, i.e. a different rate of accumulation between incompatibilities. A complementary approach to quantitative modeling (an extension of Fisher's Geometric Model) then clarifies which conditions of divergence between allopatric lines led to highly deleterious effects in hybrid genotypes. The relative importance of mean levels of fitness epistasis, the distribution of mutation sizes, and the way lineages adapt to new environmental conditions is discussed. The second part of this thesis takes advantage of technical advances in genomics to study the history of speciation and adaptation in a non-model species complex, Mytilus mussels. A statistical method of inferring speciation scenarios is presented. Results show that European mussels experienced a complex history of strict divergence followed by a period of periodic connectivity. In agreement with the concept of semi-permeable barriers to gene flow, it is shown that introgression rates are heterogeneous along the genome. Next, genome scans of differentiation were conducted between pairs of populations of the species complex. The analysis of genetic variation and allele genealogies on a small chromosomal scale allowed to reconstruct the evolutionary history of more than 1000 genomic regions. This analysis reveals that a major cause of intraspecific differentiation is the differential introgression of foreign alleles. Overall, this thesis shows not only that biogeography of speciation, i.e. the temporal and spatial patterns of gene flow, play a major role in our understanding of existing biodiversity, but also its amazing complexity and extent of its impact on genome evolution
Bryant, Litticia M. "Cryptic diversity and evolutionary relationships among Australian closed-forest Melomys (Rodentia: Muridae) and related Australo-Papuan mosaic-tailed rats". Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/60846/1/Litticia_Bryant_Thesis.pdf.
Pełny tekst źródłaFitzpatrick, Benjamin Minault. "Speciation and barriers to gene flow /". For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.
Pełny tekst źródłaEl, Ayari Tahani. "Barrières au flux génique en Méditerranée Occidentale : étude de la différenciation génétique chez deux mollusques marins, Mytilus galloprovincialis & Stramonita haemastoma". Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS226/document.
Pełny tekst źródłaPopulation genetics has revealed the genetic diversity of marine species is often subdivided into a mosaic of discrete patches, within which populations are genetically homogeneous, delineated by discontinuities called barriers to gene flow. The aim of this thesis was to contribute to better understand the processes explaining the origin, maintenance and location of genetic barriers at the Atlantic/Mediterranean transition zone. First, we studied the genetic structure of the mussel Mytilus galloprovincialis. In contrast to the abrupt narrow cline reported in Spain, we discovered along the Algerian coastline a 600 km wide mosaic hybrid zone eastward of the Almeria-Oran oceanic front. Second, we studied the genetic structure of a marine gastropod Stramonita haemastoma. We discovered two cryptic lineages differentially fixed for alternative mitochondrial haplogroups, and differentiated at three microsatellite markers developed in this PhD work. Surprisingly, the spatial distribution proved to be an unusual mosaic with a patch of the Atlantic lineage enclaved in the north of the Western Mediterranean Sea, bordered in the South by a hybrid zone in eastern Spain around Valencia. These two studies highlight the importance of intrinsic reproductive isolation in explaining the mosaic distribution of the marine genetic diversity. Although boundaries between patches coincide with physical barriers to dispersal or ecotones, hydrography and environment mainly explain the position of the genetic discontinuities but neither their origin nor their maintenance
Burban, Ewen. "Approche génomique de la détection des barrières au flux de gènes". Electronic Thesis or Diss., Université de Rennes (2023-....), 2024. http://www.theses.fr/2024URENB007.
Pełny tekst źródłaCharacterizing the mechanisms that underlie reproductive isolation between diverging lineages is central in understanding the speciation process. As populations evolve, they gradually develop reproductive isolation (RI) by passing through intermediate steps, often referred to as the "gray zone of speciation". This isolation is marked by the emergence of genomic regions acting as barriers to local gene flow, distinct from the rest of the genome. Detecting these barrier loci involves identifying outlier loci with specific signatures. However, other processes can create similar patterns, which challenges barrier loci detection. In my thesis, I developed a new tool, RIDGE - Reproductive Isolation Detection using Genomic Polymorphisms, a novel free and portable tool tailored for this purpose in a comparative framework. RIDGE utilizes an Approximate Bayesian Computation model-averaging approach based on a random forest to accommodate diverse scenarios of lineage divergence. It considers heterogeneity in migration rate, linked selection, and recombination, estimates barrier proportion and conducts locus-scale tests for gene flow barriers. Simulations and analyses of published datasets in crow species pairs demonstrate RIDGE's efficacy in detecting ongoing migration and identifying barrier loci, even for recent divergence times. Furthermore, the contribution of summary statistics varies depending on the dataset, highlighting the complexity of gene flow barrier genomic signals and the interest of combining several statistics. Subsequently, I applied RIDGE to wild/domestic pairs in maize (an outcrosser), and foxtail millet (a selfer), both domesticated around 9,000 years ago. Gene flow between forms has been reported in these two systems. Consistently, models with ongoing migration and heterogeneity in migration rate were clearly dominant over other models. RIDGE also demonstrated its ability to distinguish between barrier loci and domestication loci (that experienced selective sweeps within the domestic forms). The perspectives of this work include applying RIDGE to multiple population/species pairs encompassing a large spectrum of divergence to determine the genomic pattern of RI during speciation, to test the snowball theory formulated by Orr in 1995 or to determine the nature of speciation genes
Kruuk, Loeske E. B. "Barriers to gene flow : a Bombina (fire-bellied toad) hybrid zone and multilocus cline theory". Thesis, University of Edinburgh, 1997. http://hdl.handle.net/1842/11015.
Pełny tekst źródłaCzęści książek na temat "Gene flow barrier"
Liu, Yong-Bo, i Xin-Yu Wang. "Gene flow mitigation by ecological approaches." W Gene flow: monitoring, modeling and mitigation, 125–36. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789247480.0009.
Pełny tekst źródłaRichard, A. J. "Hybridisation - Reproductive Barriers to Gene Flow". W Gene Flow from GM Plants, 78–112. Oxford, UK: Blackwell Publishing Ltd, 2007. http://dx.doi.org/10.1002/9780470988497.ch4.
Pełny tekst źródłaMelo, Martim, Luis M. P. Ceríaco i Rayna C. Bell. "Biogeography and Evolution in the Oceanic Islands of the Gulf of Guinea". W Biodiversity of the Gulf of Guinea Oceanic Islands, 141–70. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-06153-0_6.
Pełny tekst źródłaMayr, Ernst, i Jared Diamond. "The Establishment of Geographic Isolates". W The Birds of Northern Melanesia, 216–17. Oxford University PressNew York, NY, 2001. http://dx.doi.org/10.1093/oso/9780195141702.003.0028.
Pełny tekst źródłaIngram, Neil, Sylvia Hixson Andrews i Jane Still. "The Birth and Death of Species". W Evolution. Oxford University Press, 2021. http://dx.doi.org/10.1093/hesc/9780198862574.003.0002.
Pełny tekst źródłaHill, Geoffrey E. "Mitonuclear speciation". W Mitonuclear Ecology, 143–78. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198818250.003.0007.
Pełny tekst źródłaArnold, Michael L. "Barriers to gene flow". W Evolution through Genetic Exchange, 62–81. Oxford University Press, 2007. http://dx.doi.org/10.1093/acprof:oso/9780199229031.003.0004.
Pełny tekst źródłaPatricia Rendón-Huerta, Erika, Carlos Abraham García-García i Luis Felipe Montaño Estrada. "Effect of Helicobacter pylori on Tight Junctions in Gastric Epithelia". W Helicobacter pylori - From First Isolation to 2020 [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96607.
Pełny tekst źródłaCornelissen, Germaine, i Kuniaki Otsuka. "Integumentary System". W Chronobiology and Chronomedicine, 374–96. Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/bk9781839167553-00374.
Pełny tekst źródłaWest-Eberhard, Mary Jane. "Speciation". W Developmental Plasticity and Evolution. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195122343.003.0035.
Pełny tekst źródłaStreszczenia konferencji na temat "Gene flow barrier"
Vazquez, Louis C., Erik Hagel, Bradley J. Willenberg, Christopher D. Batich i Malisa Sarntinoranont. "Effect of Polymer Coated Needles on Infusate Backflow During Convection-Enhanced Delivery". W ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19557.
Pełny tekst źródłaNoh, D. H., S. Kim, J. Eun i Y. R. Kim. "A New Laboratory Testing Platform to Study Saturation, Swelling/contraction, Desiccation Cracking, and Permeability of Gas/liquid of Engineered Barrier Materials at High Pressure-Temperature Conditions". W 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0753.
Pełny tekst źródłaNoh, D. H., S. Kim, J. Eun i Y. R. Kim. "High-Temperature Performance of Compacted Bentonite Blocks for High-Level Nuclear Waste Repository: A Study of Desiccation Crack Control and Gas Permeability with Glass Microfiber Reinforcement". W 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0513.
Pełny tekst źródłaRassouli, F. S., E. Haghighat, R. Juanes i M. D. Zoback. "A Thermo-Visco-Plastic Study of the Wolfcamp Shale: Experiments and Modeling". W 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0063.
Pełny tekst źródłaRaporty organizacyjne na temat "Gene flow barrier"
Kirk, James. The Columbia River as a Barrier to Gene Flow in the Vagrant Shrew, Sorex vagrans vagrans Baird. Portland State University Library, styczeń 2000. http://dx.doi.org/10.15760/etd.2550.
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