Sökning: "reproductive success"

Visar resultat 6 - 10 av 123 avhandlingar innehållade orden reproductive success.

  1. 6. Lifestyle and Reproductive Health among Women prior to Conception

    Författare :Lana Salih Joelsson; Alkistis Skalkidou; Tanja Tydén; Anna Berglund; Kjell Wånggren; Staffan Nilsson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; lifestyle; pregnancy; infertility; in vitro fertilization; smoking; obesity; alcohol; Obstetrik och gynekologi; Obstetrics and Gynaecology;

    Sammanfattning : Health and lifestyle is of great importance when women intend to become pregnant, as well as during pregnancy. It is crucial that people seeking for infertility are aware of which lifestyle changes they can undertake to enhance the likelihood of treatment success. LÄS MER

  3. 7. Sex-role reversal in two pipefish (Syngnathidae) species : paternal care and male limitation of female reproductive success

    Författare :Ingrid Ahnesjö; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : .... LÄS MER

  4. 8. Pollination processes - maternal and offspring performance

    Författare :Kristina Holmén Bränn; Kari Lehtilä; Pia Mutikainen; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Pollination; Sinapis arvensis; Brassica napus; Raphanus raphanistrum; Succisa pratensis; Evolution of flower size; Maternal plant responses; Resource allocation; Reproductive success; Terrestrial ecology; Terrestisk ekologi; Plant Ecology; växtekologi;

    Sammanfattning : Pollination is one of the most important factors determining the reproductive success of plants. This thesis examines processes associated to varying pollination, with focus on plant responses. The first aim was to examine the possibility and constraints for short-term evolution of flower size in Raphanus raphanistrum. LÄS MER

  5. 9. Life History of the Common Gull (Larus canus) : A Long-Term Individual-Based Study

    Författare :Kalev Rattiste; Mats Björklund; Jon E Brommer; Jan-Åke Nilsson; Uppsala universitet; []
    Nyckelord :Ecology; longitudinal studies; reproductive success; survival; pair bond; indicator trait; breeding time; heritability; selection; Ekologi; Larus canus; ekologisk botanik; Ecological Botany;

    Sammanfattning : An individual’s life history is a sequence of events which eventually determine its contribution to the next generation, or fitness. These events are affected by environmental factors, genetic make-up and decisions made by an individual and its breeding partner. LÄS MER

  7. 10. Male and female selective mechanisms, reproductive success and gene flow

    Författare :Samuel Kiboi; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Växtekologi; Plant ecology; Cucumis sativus.; genetic marker; gene flow; reproduction; embryo abortion; resistance; maternal selection; sexual selection; pollen competition; selection;

    Sammanfattning : In this thesis, I have studied male and female selective mechanisms that can affect plant reproductive success and gene flow. I have focussed on sexually selected traits, mainly pollen competition and maternal sorting mechanisms, for example through non-random ovule abortion. LÄS MER