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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
431

Analyse des Kreuzungstyp-Locus des filamentösen Ascomyceten Sordaria macrospora / Analysis of the mating-type locus of the filamentous ascomycete Sordaria macrospora

Klix, Volker 27 October 2010 (has links)
No description available.
432

Regulation of Growth and Development by the Small GTPase Cdc42p and the Transcription Factor Tec1p in <i>Saccharomyces cerevisiae</i> / Regulation von Wachstum und Differenzierung durch die Kleine GTPase Cdc42p und den Transkriptionsfaktor Tec1p in <i>Saccharomyces cerevisiae</i>

Köhler, Tim 02 July 2003 (has links)
No description available.
433

Social organisation and mating system of the fosa (Cryptoprocta ferox) / Soziale Organisation und Paarungssystem der Fossa (Cryptoprocta ferox)

Lührs, Mia-Lana 16 July 2012 (has links)
No description available.
434

Untersuchung zur Gestaltung von Zuchtprogrammen in der Legehennenzucht / Studies on the design of breeding programs in the breeding of laying hens

Tsehay, Fitsum 19 May 2005 (has links)
No description available.
435

Asexuelle und sexuelle Reproduktion bei der Vogelkirsche (Prunus avium L.) / Asexual and sexual reproduction in populations of wild cherry (Prunus avium L.)

Kownatzki, Dierk 08 February 2001 (has links)
No description available.
436

Reproduktionssystem des Feldahorns (<i>Acer campestre</i> L.) / Blühphänologie und genetische Untersuchungen / Reproductive System of Field Maple (<i>Acer campestre</i> L.) / Flowering Phenology and Genetic Investigations

Bendixen, Kathrin 24 August 2001 (has links)
No description available.
437

Genética de populações e relações de parentesco em Ciconiiformes (Aves)

Miño, Carolina Isabel 06 August 2010 (has links)
Made available in DSpace on 2016-06-02T20:20:30Z (GMT). No. of bitstreams: 1 3280.pdf: 5102569 bytes, checksum: f511b08e43998ea79e0f9b0ac5ed969b (MD5) Previous issue date: 2010-08-06 / Universidade Federal de Sao Carlos / Population genetic parameters and genetic relatedness estimates were carried out for Roseate Spoonbill (Platalea ajaja), Wood Stork (Mycteria americana) and Great Egret (Ardea alba egretta) reproductive colonies in Amapa, Pantanal and Rio Grande do Sul (RS), Brazil. Microsatellite genotypes were used to investigate kinship patterns between nestlings sampled inside the same nests, using a variety of analytical approaches. Unrelated nestling-pairs were observed in Roseate Spoonbill nests (6.12% of analyzed nests) and in Wood Stork nests (11.34%); half-siblings were present in Roseate Spoonbill nests as well (1.36%). Only full-siblings were detected inside Great Egret nests. Conspecific brood parasitism (CBP) and extra-pair paternity were proposed to account for the presence of unrelated nestmates and half-siblings, respectively, in Roseate Spoonbill and Wood Stork nests. Those results suggest the occurrence of a mating system different than genetic monogamy in natural populations of those waterbirds. Genetic relatedness was also investigated for adults and offspring, as well as for supposed siblings in Roseate Spoonbill families kept in three zoological facilities in the U.S. Paternity and maternity allocation analyses through maximum-likelihood revealed that errors were present in zoo&#8223;s studbooks in relation to the familial records. We also identified mating between related individuals that were not detected previously by zookeepers. Population genetic parameters were also estimated and demographic processes were assessed for Great Egret reproductive colonies in the Pantanal and Rio Grande do Su, Brazil. Bayesian clustering analyses, assignment tests, analysis of molecular variance, F-statistics estimates, allelic frequency distribution and the G-W index revealed that: i) Pantanal reproductive colonies are genetically differentiated from Rio Grande do Sul colonies; ii) an IBD-like pattern alone cannot explain that differentiation; and iii) genetic signal of a reduction of population size was present for two colonies in the Pantanal and one in Rio Grande do Sul. Results were discussed considering a metapopulation dynamic and also considering that populations from both Brazilian regions represent distinct units and deserve to be treated separately when planning and carrying out conservation and management programs that aim to preserve the species&#8223; genetic diversity. / Estudos de genética de populações e de parentesco genético foram desenvolvidos em colhereiro (Platalea ajaja), cabeça-seca (Mycteria americana) e garça-branca-grande (Ardea alba egretta), de colônias reprodutivas do Amapá, Pantanal e Rio Grande do Sul (RS), Brasil. Genótipos em locos de microssatélites foram utilizados para se investigar os padrões de relacionamento entre ninhegos amostrados dentro dos mesmos ninhos com diferentes metodologias de análise. Pares de ninhegos não-relacionados foram encontrados nos ninhos de colhereiro (6,12% dos pares analisados) e de cabeça-seca (11,34%); meio-irmãos foram observados nos ninhos de colhereiro (1,36%). Em garça branca grande foi detectada apenas a presença de irmãos-completos dentro dos ninhos. Parasitismo de ninho intraespecífico e paternidade extra-par podem explicar a presença de ninhegos não-relacionados e meio-irmãos nos ninhos de colhereiro e cabeça-seca, o que indica a presença de um sistema de acasalamento diferente da monogamia genética nas populações naturais dessas espécies. Relações de parentesco entre adultos e filhotes e entre supostos irmãos foram determinadas em famílias de colhereiro de três zoológicos dos EUA. Análises de atribuição de maternidade e paternidade por máxima verossimilhança revelaram erros nos registros dos zoológicos quanto às relações progenitor-progênie e identificaram acasalamentos entre indivíduos aparentados que não tinham sido registrados. Parâmetros genético-populacionais e processos demográficos foram investigados em populações de garça-branca-grande do Pantanal e do Rio Grande do Sul. Análises Bayesianas, testes de alocação de indivíduos, análises de variância molecular, estimativa de estatísticas F, exame da distribuição das freqüências alélicas e cálculo do índice de G-W permitiram identificar que: i) há diferenciação genética significativa entre colônias reprodutivas do Pantanal e do Rio Grande do Sul; ii) o padrão de isolamento pela distância não explica essa diferenciação; e iii) duas populações no Pantanal e uma população no RS apresentaram sinais genéticos de redução demográfica. Os resultados foram discutidos considerando que as populações de garça-branca-grande localizadas no Pantanal e no Rio Grande do Sul são unidades populacionais independentes e devem se tratar separadamente no planejamento e desenvolvimento de programas de manejo para a conservação da diversidade genética total da espécie.
438

Escape Motions: Rozšíření editoru Flame Painter / Escape Motions: Flame Painter Extensions

Piovarči, Rastislav January 2013 (has links)
Main goal of this master´s thesis is to propose and implement improvements to an original purely raster version of Flame Painter editor. An enhancement of the undo/redo system with emphasise to its functionality and memory requirements has been implemented. Moreover, the editor was extended by adding an ability to edit brush strokes using vector primitives which effectively assist the user in future stroke editing. This project was created in cooperation with employees of the Escape Motions Company.
439

Změny chování opylovačů v rostlinných populací o různé míře shlukovitosti / Changes in pollinator behaviour under different plant spatial aggregation

Štenc, Jakub January 2020 (has links)
Plants often occur aggregated into clusters and this spatial pattern is supposed to affect pollinator behaviour and pollen dispersal. Such pollinator reaction may influence reproductive success of zoogamous plant species both in terms of number of available mates and their genetic diversity (nearby growing plant individuals are also often closely related, especially in clonal plants). In the present thesis, I investigated the influence of plant spatial aggregation on pollinator behaviour and how this translates into pollen transfer. For that purpose, I carried three experiments. In the Experiment 1, I used potted plants placed into arrays and aggregated into four patches in order to track the pollen dispersal by means of a UV-dye pollen analogue. I manipulated distances between plants within clusters (dense × loose) and between clusters (near × far). I conducted this experiment for three plant species differing in their pollinator spectra. In the Experiment 2, I observed pollinator foraging sequences (sequences of visited plant individuals) under the same experimental design as for the first experiment, but I carried out this experiment for five plant species. In addition in one study species, Dianthus carthusianorum, I conducted the Experiment 3 to get better insight into pollination effectiveness...
440

Nutrient Effects on Sexual Selection and Comparison of Mating Calls in Katydids (Tettigoniidae)

Trozzo, Lara Rae 19 April 2013 (has links)
No description available.

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