Sökning: "mate choice"

Visar resultat 1 - 5 av 50 avhandlingar innehållade orden mate choice.

  1. 1. Chemical Communication and Mate Choice Investigations into the Meaning of a Fruit Fly Pheromone

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Björn G. Johansson; Uppsala universitet.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; Drosophila grimshawi; sexual selection; pheromone; mate choice; lekking; Ekologi; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology; NATURVETENSKAP Biologi Terrestisk; limnisk och marin ekologi;

    Sammanfattning : Chemical signals are the most widely used form of sexual communication throughout the living world. However, there is in general little knowledge about what these signals actually communicate. The role of chemical signals, i.e. LÄS MER

  2. 2. Mutual Mate Choice in the Deep Snouted Pipefish Syngnathus typhle

    Detta är en avhandling från Uppsala : Zooekologi

    Författare :Maria Widemo; Uppsala universitet.; [2003]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biology; Sexual selection; mutual mate choice; mate competition; sex role reversal; parental investment; Biologi; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Animal Ecology; zooekologi;

    Sammanfattning : This thesis integrates the fields of sexual selection, parental investment and sex role theory by investigating mutual mate choice and mate competition in the sex role reversed deep snouted pipefish Syngnathus typhle (Pisces: Syngnathidae) through a series of laboratory experiments. In S. LÄS MER

  3. 3. The Evolution of Sexually Homologous Ornaments Selection via Male Mate Choice Coinciding with Male-Male Competition in a Neotropical Mosquito

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Sandra South; Uppsala universitet.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; sexual selection; Sabethes cyaneus; Diptera; Culicidae; mosquito; mutual ornamentation; sexual selection; mutual mate choice; male mate choice; female ornament; ecology; animal behaviour; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Ethology and behavioural ecology; NATURVETENSKAP Biologi Terrestrisk; limnisk och marin ekologi Etologi och beteendeekologi; Zooekologi; Animal Ecology;

    Sammanfattning : The evolution of elaborate male ornaments via sexual selection is well-understood while the selective pressures acting on female ornaments remains unresolved. Female ornaments in species with strong sexual selection on the male homologue of the ornament were originally thought to result from an intersexual genetic correlation. LÄS MER

  4. 4. Genetic Aspects of Sexual Selection and Mate Choice in Salmonids

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Lars Forsberg; Södertörns högskola.; Uppsala universitet.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Biology; mate choice; Mhc; Major histocompatibility complex; class IIB; disassortative; assortative; microsatellite; outbreeding; supportive breeding; population; population genetics; Biologi;

    Sammanfattning : The long-term genetic consequences of supportive breeding programs are not well understood. Nevertheless, stocking populations with hatchery-produced fish to compensate for losses of natural production are common practice, for example after constructions of hydroelectric power dams. LÄS MER

  5. 5. Mallard ducks : mate choice and breeding success

    Detta är en avhandling från Stockholm : Stockholm University

    Författare :Kerstin Holmberg; Stockholms universitet.; [1991]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER