Sökning: "mutual mate choice"

Hittade 4 avhandlingar innehållade orden mutual mate choice.

  1. 1. 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

  2. 2. 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

  3. 3. Sexual selection in Pomatoschistus – nests, sperm competition, and paternal care

    Detta är en avhandling från Stockholm : Zoologiska institutionen

    Författare :Ola Svensson; Stockholms universitet.; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Female choice; Filial cannibaism; Gobiidae; Nests; Paternal care; Pomatoschistus microps; Pomatoschistus minutus; Sexual selection; Sperm competition; Teleostei; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology; NATURVETENSKAP Biologi Terrestisk; limnisk och marin ekologi;

    Sammanfattning : Sexual selection arises through variation in reproductive success. This thesis investigates different aspects important in sexual selection, namely nest building, sperm competition, paternity and paternal care, and their mutual interrelationships. LÄS MER

  4. 4. The Preservation of Favoured Morphs in the Struggle Between Sexes

    Detta är en avhandling från Stockholm : Zoologiska institutionen

    Författare :Thomas Gosden; Lunds universitet.; Lund University.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sexual Selection; Polymorphism; Density-dependence; Population divergence; Zygoptera; Sexual Conflict;

    Sammanfattning : Sexual selection is particularly likely to promote population divergence, because sexual traits are expected to be subject to rapid evolutionary change. Identifying the relative roles of particular barriers to the amount of total reproductive isolation between populations or closely related species can provide important clues to the mechanisms of population divergence and speciation Phenotypic trait differences among populations are thought to reflect the interaction between the intensity of gene flow versus the strength of local selection and drift. LÄS MER