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Visar resultat 1 - 5 av 16 avhandlingar som matchar ovanstående sökkriterier.

1. 1. How the sensory ecology of the bumblebee affects their functional traits

   Författare :Vun Wen Jie; Emily Baird; Mikael Carlsson; Martin How; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Bumblebee; functional morphological traits; intraspecific differences; allometry; DRA; micro-CT; co-existence; Functional Zoomorphology; funktionell zoomorfologi;

   Sammanfattning : Morphological traits are important for trait-based ecological studies as they allow for the prediction of biodiversity across the biosphere. Currently, the predictive power of trait-based ecology is not often applied to terrestrial arthropods, even though they provide us with important agricultural, ecological, and cultural value. LÄS MER

3. 2. Morphological and functional effects of insulin signaling and the bHLH transcription factor Dimmed on different neuron types in Drosophila

   Författare :Yiting Liu; Dick R. Nässel; Irene Miguel-Aliaga; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; insulin signaling; Dimm; neuropeptide; insulin receptor; insulin-like peptide; drosophila; funktionell zoomorfologi; Functional Zoomorphology;

   Sammanfattning : In Drosophila, the insulin signaling pathway is at the interface between dietary conditions and control of growth and development, reproduction, stress responses and life span. Eight insulin like peptides (Dilp1-8), an insulin tyrosine kinase receptor (dInR) and its downstream components, as well as a relaxin-like receptor type (Lgr3) form the core of this signaling. LÄS MER

4. 3. Regulation of insulin signaling and its developmental and functional roles on peptidergic neurons in the Drosophila central nervous system

   Författare :Jiangnan Luo; Dick Nässel; Susan Broughton; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Insulin; serotonin; octopamine; insulin receptor; Dimm; neuropeptide; funktionell zoomorfologi; Functional Zoomorphology;

   Sammanfattning : In Drosophila, eight insulin-like peptides (DILP1-8) are produced and secreted in different locations. They regulate many aspects of development and physiology, such as organism growth, metabolic homeostasis, reproduction, stress resistance and life span. LÄS MER

5. 4. Chemical signalling in the Drosophila brain : GABA, short neuropeptide F and their receptors

   Författare :Lina E. Enell; Dick Nässel; Jonathan Bacon; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Insect nervous system; Drosophila; GABA; sNPF; GPCR; ion channel receptor; feeding; metabolic stress; olfaction; antennal; lobe; mushroom body; Morphology; Morfologi; funktionell morfologi; Functional Zoomorphology;

   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

7. 5. Regulation of insulin producing cells, stress responses and metabolism in Drosophila

   Författare :Neval Kapan; Dick R. Nässel; Alberto Ferrus; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Insulin signaling; Drosophila melanogaster; peptide hormones; neuropeptides; GABA; funktionell zoomorfologi; Functional Zoomorphology;

   Sammanfattning : In Drosophila, neuropeptides have regulatory roles in development, growth, metabolism and reproduction. This study focused on GABA and the neuropeptides Drosophila tachykinin (DTK), short neuropeptide F (sNPF), adipokinetic hormone (AKH), corazonin (CRZ) and Drosophila insulin-like peptides (DILPs) as possible regulators of metabolic stress responses and homeostasis. LÄS MER