Sökning: "Mating Success"

Visar resultat 6 - 10 av 35 avhandlingar innehållade orden Mating Success.

  1. 6. Cryptic Female Choice and Male Mating Behaviour : Sexual Interactions in Beetles

    Författare :Martin Edvardsson; Göran Arnqvist; Paul Ward; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Cryptic female choice; Copulatory courtship; Harmful male traits; Nuptial gifts; Sperm competition; Sexual selection; Tribolium castaneum; Callosobruchus maculatus; Biologi; Biology; Biologi;

    Sammanfattning : The importance of cryptic female choice, i.e. female post-copulatory influence over male reproductive success, in driving the evolution of male traits remains controversial. The main aim of this thesis was to understand the post-copulatory consequences of sexual interactions and the importance of cryptic female choice in two species of beetle. LÄS MER

  3. 7. Visual mate detection and mating success by resident and nonresident males in a territorial woodland butterfly, Pararge aegeria

    Författare :Martin Bergman; Stockholms universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 8. Polyandry and the evolution of reproductive divergence in insects

    Författare :Tina Nilsson; Göran Arnqvist; David Hosken; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; Bruchidae; cryptic female choice; multiple mating; sexual conflict; sexually antagonistic coevolution; sexual selection; speciation; sperm competition; Tenebrionidae; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Sammanfattning : Multiple mating by females is common in nature. Yet, the evolution and maintenance of polyandry remains a bit of an evolutionary puzzle. It was my aim in this thesis to reach a greater understanding of this phenomenon as well as to investigate the consequences of polyandry on the evolution of reproductive divergence in insects. LÄS MER

  5. 9. Reproduction in the Hermaphrodite Aeolidiella glauca - A Tale of Two Sexes

    Författare :Anna Karlsson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Aeolidiella glauca; simultaneous hermaphrodite; mating behaviour; mate choice; sex allocation; Utvecklingsbiologi; Developmental biology; Utvecklingsbiologi; Animal Ecology; zooekologi;

    Sammanfattning : This thesis focuses on reproduction in a simultaneous hermaphrodite with internal fertilization; the nudibranch Aeolidiella glauca. Unlike most other nudibranchs, where copulation is the rule, A. glauca was found to transfer sperm via external spermatophores that were attached to the partner's back. LÄS MER

  7. 10. Sex in Murky Waters : Anthropogenic Disturbance of Sexual Selection in Pipefish

    Författare :Josefin Sundin; Anders Berglund; Gunilla Rosenqvist; Bob Wong; Uppsala universitet; []
    Nyckelord :Mating system; Mate choice; Courtship; Eutrophication; Turbidity; Hypoxia; Ocean acidification; Syngnathidae; Biologi med inriktning mot zooekologi; Biology with specialization in Animal Ecology;

    Sammanfattning : Animals experience variation in their environment because of natural changes. However, due to anthropogenic disturbance, the speed and severity of these changes have recently increased. This thesis investigates how reproductive behaviours may be affected by human induced environmental change. LÄS MER