Sökning: "coevolution"

Visar resultat 6 - 10 av 28 avhandlingar innehållade ordet coevolution.

  1. 6. Selection on floral traits in Primula farinosa

    Författare :Didrik Vanhoenacker; Johan Ehrlén; Jon Ågren; Arjen Biere; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; coevolution; correlational selection; Falseuncaria ruficiliana; geographic mosaic; hand pollination; Hermann Müller; interaction strength; plant-insect interactions; pollen limitation; selection strength; spatiotempora; Uta stansburiana; Biology; Biologi; Plant Ecology; växtekologi;

    Sammanfattning : Flowers and inflorescences have evolved in relation to animals for at least 100 million years. Plants attract pollinators with large, conspicuous, bright-coloured or scented flowers. These display attributes, however, also attract herbivores. LÄS MER

  2. 7. Sexual conflict and male-female coevolution in the fruit fly

    Författare :Urban Friberg; Göran Arnqvist; Daniel Promislow; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cryptic male mate choice; Drosophila melanogaster; female mate choice; multiple mating; sexual conflict; sexually antagonistic coevolution; sexual selection; speciation; sperm competition; Biology; Biologi;

    Sammanfattning : Harmony and cooperation was for long believed to dominate sexual interactions. This view slowly started to change 25 years ago and is today replaced with a view where males and females act based on what is best from a costs-benefits perspective. LÄS MER

  3. 8. Male-female Coevolution in Bruchid seed beetles

    Författare :Johanna Liljestrand Rönn; Göran Arnqvist; Nina Wedell; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Biologi; Animal Ecology; zooekologi; Animal Ecology;

    Sammanfattning : Male-female coevolution is at the heart of biology. It is responsible for much of the diversity we see in behaviour and morphology, and it is thought to be an important engine of speciation. LÄS MER

  4. 9. Constructive cooperative coevolution for optimising interacting production stations

    Författare :Emile Glorieux; Bengt Lennartson; Fredrik Danielsson; Bo Svensson; Johan Ölvander; Högskolan Väst; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Manufacturing automation; metaheuristic optimasion algorithm; optimised production technology; algorithm design and analysis; interacting production stations; sheet metal press lines; Manufacturing and materials engineering; Produktions- och materialteknik;

    Sammanfattning : Engineering problems have characteristics such as a large number of variables, non-linear, computationally expensive, complex and black-box (i.e. unknown internal structure). These characteristics prompt difficulties for existing optimisation techniques. LÄS MER

  5. 10. Coevolution and molecular background of species interactions in geographic mosaics

    Författare :Xuyue Yang; Peter A. Hambäck; Michael R. Strand; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; transcriptomics; population genetics; insect immunology; parasitoid; genome assembly; natural selection; Ecology and Evolution; ekologi och evolution;

    Sammanfattning : In complex food webs, species often interact with each other indirectly through mediating species. As a result of geographic mosaic of coevolution, such interactions are often evolutionarily unstable and the traits governing the interaction sometimes vary over time. LÄS MER