Sökning: "mate choice"

Visar resultat 6 - 10 av 52 avhandlingar innehållade orden mate choice.

  1. 6. Mallard ducks : mate choice and breeding success

    Författare :Kerstin Holmberg; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  3. 7. Insights into the Evolution of Moth Pheromone Communication: Lessons from the European Corn Borer

    Författare :Jean-Marc Lassance; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; biosynthetic enzymes; evolution; Ostrinia nubilalis; mate choice; mate finding; olfaction; biosynthesis; speciation; moth; pheromone; olfactory receptors.;

    Sammanfattning : Chemical communication by means of sex pheromones is central to the mating systems of a wide range of organisms. Because reproductive isolation is often based on pheromone differences, understanding how pheromones diverge is necessary for a complete comprehension of the speciation process. LÄS MER

  4. 8. Pre- and post-copulatory sexual selection in the fowl, Gallus gallus

    Författare :Hanne Løvlie; Sven Jakobsson; Tommaso Pizzari; Matthew J. G. Gage; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cryptic female choice; Gallus; inbreeding avoidance; mate choice; sexual conflict; sexual selection; sperm competition; Ethology and behavioural ecology; Etologi och beteendeekologi; etologi; Ethology;

    Sammanfattning : The evolutionary goal of individuals is reproduction and sexual selection favours traits improving reproductive success. When males invest less than females in offspring, males have potentially a higher reproductive rate than females. LÄS MER

  5. 9. 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

  7. 10. The link between brain size, cognitive ability, mate choice and sexual behaviour in the guppy (Poecilia reticulata)

    Författare :Alberto Corral López; Niclas Kolm; Janette Boughman; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; sexual selection; artificial selection; brain evolution; optomotor test; decision-making; discrimination; assessment; optimal decisions; rational choice; behavioural flexibility; expensive tissue; predation; sex ratio; OSR; maintenance of variation; etologi; Ethology;

    Sammanfattning : Competition over access for mates has led to the evolution of many striking examples of morphological traits and behaviour in animals. The rapid development of the sexual selection field in recent decades have dramatically advanced our understanding of what traits make individuals more successful in attracting mates and how preferences for mates evolve over time. LÄS MER