Sökning: "sexuell selektion"

Visar resultat 1 - 5 av 9 uppsatser innehållade orden sexuell selektion.

  1. 1. Color and wing size: identifying targets of sexual selection in Drosophila melanogaster

    Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Ellen Pääjärvi Våg; [2024]
    Nyckelord :Sexual selection; wing interference patterns; Drosophila melanogaster; visual signaling; sexuell selektion; vingmönster; bananfluga; visuell signalering;

    Sammanfattning : This study explores the relationship between wing size, coloration, and reproductivesuccess in Drosophila melanogaster, fruit flies. Sexual selection, a key aspect ofevolutionary biology, often involves visual signaling as a means of displaying geneticinformation. LÄS MER

  3. 2. The role of copulatory wound infliction on fitness in Drosophila melanogaster

    Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Dennis Leandersson; [2021]
    Nyckelord :Copulatory wounding; Fecundity; Drosophila; Fitness; Cryptic female choice; Adaptive harm hypothesis; Pleiotropic harm hypothesis;

    Sammanfattning : One of the more fascinating Darwinian puzzles in sexual selection is that of copulatory wounding. For those taxa displaying this behavior, and that does not engage in traumatic insemination, the function of wound infliction during copulation remains unknown. LÄS MER

  4. 3. Population structure of Puccinia graminis, the cause of stem rust on wheat, barley, and rye in Sweden

    Master-uppsats, SLU/Dept. of Forest Mycology and Plant Pathology

    Författare :Clara Kjellström; [2021]
    Nyckelord :plant pathology; plant disease; crop protection; fungi; P; graminis f.sp. tritci; P. graminis f.sp. secale; P. graminis f.sp. hordei;

    Sammanfattning : Rust fungi belong to the phylum Basidiomycetes, order Uredinales cause damage on almost all plants, including cereal crops. Some of the species within the genus Puccinia causes rust disease on cereal crops. One example of a disease from this genus is Puccinia graminis, which historically has caused severe damage in cereal crop production. LÄS MER

  5. 4. Parasite burden and reproductive success

    Kandidat-uppsats, SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Författare :Monica Höjerslev; [2018]
    Nyckelord :parasiter; parasitbelastning; reproduktion; reproduktionsframgång; sexuella signaler; ornament;

    Sammanfattning : Reproduction is fundamental for passing on genes and secure species survival. One crucial point of this is mate choice, mating with an unbeneficial partner, they risk less advantageous offspring than if a better mate had been chosen. To be able to make these choices, sexual signals, or ornaments, are very useful tools. LÄS MER

  7. 5. Vad har zebran för strategier för att undkomma rovdjur?

    Kandidat-uppsats, SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Författare :Philippa Lundahl; [2015]
    Nyckelord :zebror; rovdjur; ränder; camouflage; rörelse; betning; Equus; zebras; predators; stripes; camouflage; movement; grazing;

    Sammanfattning : Som bytesdjur måste zebran ständigt vara på sin vakt för att undvika att falla offer för ett rovdjur. De tre zebraarter som finns i världen är bergzebra, stäppzebra och Grevyzebra. De olika arterna lever på olika platser och de har även olika sociala strukturer. LÄS MER