Sökning: "teleost"

Visar resultat 16 - 20 av 34 avhandlingar innehållade ordet teleost.

  1. 16. Evolution of Vertebrate Vision by Means of Whole Genome Duplications : Zebrafish as a Model for Gene Specialisation

    Författare :David Lagman; Dan Larhammar; Xesús M Abalo; Finn Hallböök; Stephan Neuhauss; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; phylogenetics; evolution; vision; visual opsin; transducin; PDE6; genome duplications; subfunctionalisation; Medicinsk vetenskap; Medical Science;

    Sammanfattning : The signalling cascade of rods and cones use different but related protein components. Rods and cones, emerged in the common ancestor of vertebrates around 500 million years ago around when two whole genome duplications took place, named 1R and 2R. LÄS MER

  3. 17. Evolution of acetylcholine receptors and study of the anatomy of the mouse brain reward system

    Författare :Julia Pedersen; Dan Larhammar; Arnaud Chatonnet; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Ventral Tegmental Area; Mesocorticolimbic system; Glutamate; Optogenetics; Histology; Acetylcholine; Receptor; Muscarininc; Nicotinic; G protein-coupled receptor; Gene duplication; Tetraploidization; Synteny; Paralogon; Ohnolog; Zebrafish; Spotted gar; Neuroscience; Neurovetenskap;

    Sammanfattning : This thesis work is divided in two parts. In the first part, I make use of the transgenic TRPV1-Cre mouse line as a tool to investigate the midbrain ventral tegmental area (VTA). LÄS MER

  4. 18. 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

  5. 19. Androgen receptors and endocrine disrupting substances

    Författare :Anders Larsson; Per-Erik Olsson; Björn Brunström; Örebro universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Androgen receptor; Brominated flame retardant; TBECH; Endocrine disruptor; Biology; Biologi; NATURAL SCIENCES; NATURVETENSKAP; Biology; Biologi;

    Sammanfattning : Throughout the animal kingdom, organisms are dependent on substances such as steroid hormones to help them maintain internal balances. Examples of important tasks that are under regulation of steroid hormones are somatic and gonadal development, sexual performance and behavior (both social and sexual) as well as sex differentiation. LÄS MER

  7. 20. Roles of Arginine-Vasotocin and Corticotropin-Releasing Hormone in Stress Responses and Agonistic Behaviour of Rainbow Trout

    Författare :Tobias Backström; Svante Winberg; Lynne Sneddon; Uppsala universitet; []
    Nyckelord :Zoophysiology; arginine-vasotocin AVT ; corticotropin releasing hormone CRH ; stress; stress coping; behaviour; rainbow trout; Zoofysiologi;

    Sammanfattning : The neuropeptides arginine-vasotocin (AVT) and corticotropin-releasing hormone (CRH) are involved in the hypothalamic-pituitary-interrenal (HPI) axis. During stress, the HPI axis is activated and cortisol is released into the blood. In addition to their role in the HPI axis, AVT and CRH also have behavioural effects. LÄS MER