Sökning: "reproductive behaviour"

Visar resultat 1 - 5 av 100 avhandlingar innehållade orden reproductive behaviour.

  1. 1. Reproductive behaviour of a monogamous cichlid fish Tilapia mariae

    Författare :Erkki Schwanck; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ciklider;

    Sammanfattning : .... LÄS MER

  3. 2. Neuromolecular and behavioural profile of teleosts : - effects of boldness, agonistic behaviour and reproductive status

    Författare :Arshi Mustafa; Svante Winberg; Per Erik Olsson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Histamine receptor 1 hrh1 ; histamine receptor 2 hrh2 ; histamine receptor 3 hrh3 ; boldness; personality; aggression; Histaminergic activity; Serotonergic activty 5-HIAA 5-HT ; Dopaminergic activty DOPAC DA ; spiegeldanio spd ; wild caught zebrafish; AB zebrafish; behaviour; brain.;

    Sammanfattning : This thesis investigates if boldness is reflected in the function of brain histaminergic system in zebrafish (Danio rerio). Moreover, behavioural differences in AB line, spiegeldanio (spd) line and wild caught strain of zebrafish have also been explored apart from the winner-loser effect in AB and spd fish. LÄS MER

  4. 3. Sexually transmitted diseases and sexual behaviour among young Swedish women : a population-based study

    Författare :Monica Jonsson; Roger Karlsson; Viveca Odlind; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; population-based; women; symptoms; C.trachomatis; HPV; HSV-2; Chlamydia antibodies; wet smear; STD; sexual behaviour; risk behaviour;

    Sammanfattning : Most epidemiologic studies of sexually transmitted diseases (STD) are based on patients seeking help or advice at various health care settings. Because many STD:s are subclinical, epidemiologic surveys can be strengthened by a population-based approach. LÄS MER

  5. 4. Predation as a driver of reproductive isolation - from adaptive divergence to hybrid inviability

    Författare :Varpu Pärssinen; Enhet akvatisk ekologi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; reproductive isolation; ecological speciation; predation; adaptive radiation; evolution; behaviour; fish;

    Sammanfattning : Natural selection can play an important role in the origin of new species. When reproductive isolation evolves as a result of ecologically-based divergent natural selection, the process is referred to as ecological speciation. In most organisms, sufficient reproductive isolation is considered to be essential for the establishment of new species. LÄS MER

  7. 5. Brain Aromatase in the guppy, Poecilia reticulata : Distribution, control and role in behaviour

    Författare :Stefan Hallgren; Håkan Olsén; Bertil Borg; Julie Bakker; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Oestrogen production; behaviour; anatomy; endocrinology; bio markers; endocrine disruption; Organism biology; Organismbiologi; funktionell morfologi; Functional Zoomorphology; Biology;

    Sammanfattning : Oestrogens are produced by aromatisation of androgens by the aromatase enzyme. In the vertebrate brain this synthesis has vital functions in nerve protection, cell proliferation and nerve development during injury respectively brain development. LÄS MER