Sökning: "status signalling"
Visar resultat 1 - 5 av 60 avhandlingar innehållade orden status signalling.
1. β-Adrenergic Signalling Through mTOR
Sammanfattning : Adrenergic signalling is part of the sympathetic nervous system and is activated upon stimulation by the catecholamines epinephrine and norepinephrine. This regulates heart rate, energy mobilization, digestion and helps to divert blood flow to important organs. LÄS MER
2. Phylogeny and Signal Diversity in Widowbirds and Bishops (Euplectes spp.)
Sammanfattning : Although sexual selection for elaborate signals is well documented in numerous species, the extreme diversity in signal design and expression in many taxa is largely unexplained. This thesis explores phylogenetic, mechanistic and ontogenetic explanations for divergence in two classic condition-dependent signal traits in the African widowbirds and bishops (Euplectes spp. LÄS MER
3. Chemical signalling in the Drosophila brain : GABA, short neuropeptide F and their receptors
Sammanfattning : Gamma-aminobutyric acid (GABA) and short neuropeptide F (sNPF) are widespread signalling molecules in the brain of insects. In order to understand more about the signalling and to some extent start to unravel the functional roles of these two substances, this study has examined the locations of the transmitters and their receptors in the brain of the fruit fly Drosophila melanogaster using immunocytochemistry in combination with Gal4/UAS technique. LÄS MER
4. β-adrenergic signalling and novel effects in skeletal muscle
Sammanfattning : Skeletal muscles have, due to their large mass, a big impact on the whole body metabolism. There are many signals that can regulate the functions of skeletal muscles and one such signal is activation of α- and β-adrenoceptors (α- and β-ARs) by epinephrine and norepinephrine. LÄS MER
5. Cellular Resilience and Fragility in Response to Environmental and Gene Expression Perturbations
Sammanfattning : Cells are constantly subjected to perturbations. Whether these are extracellular or intracellular, they can be detrimental to cellular fitness. The cell has evolved elaborate systems and mechanisms that allow it to remain functional in the face of disturbances. LÄS MER
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