Search for dissertations about: "male reproductive success"
Showing result 1 - 5 of 40 swedish dissertations containing the words male reproductive success.
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1. Sex-role reversal in two pipefish (Syngnathidae) species : paternal care and male limitation of female reproductive success
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2. Male and female selective mechanisms, reproductive success and gene flow
Abstract : 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. READ MORE
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3. Breeding System Evolution and Pollination Success in the Wind-Pollinated Herb Plantago maritima
Abstract : In this thesis, I examined variation in sex expression and mating patterns in the sexually polymorphic, wind-pollinated herb Plantago maritima. With a combination of field studies, greenhouse experiments, and genetic analyses, I (a) examined factors influencing sex ratio variation in gynodioecious plants (in which hermaphrodites and females coexist), (b) discovered variation in breeding system, (c) investigated density-dependence of seed production, and (d) documented genetic variation within and among populations close to the northern range margin in Europe. READ MORE
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4. Male and female reproductive success in the hermaphroditic shrub Viburnum opulus (Caprifoliaceae)
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5. Cryptic Female Choice and Male Mating Behaviour : Sexual Interactions in Beetles
Abstract : 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. READ MORE