Search for dissertations about: "Funktionell zoologi"
Showing result 21 - 25 of 49 swedish dissertations containing the words Funktionell zoologi.
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21. The role of insulin signaling during development, reproductive diapause and aging in Drosophila Melanogaster
Abstract : The insulin/insulin-like growth factor signaling pathway exists from invertebrates to vertebrates and it can regulate various biological processes, including development, metabolism, stress resistance and lifespan. In Drosophila, eight insulin-like peptides (DILP1-8) have been found. READ MORE
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22. Regulation of insulin signaling and its developmental and functional roles on peptidergic neurons in the Drosophila central nervous system
Abstract : 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. READ MORE
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23. The sensory morphology of insect pollinators : From structure to behaviour and ecology
Abstract : Insect pollinators play an important role in balancing our ecosystems and maintaining plant and food diversity. Due to anthropogenic activities such as global warming, habitat loss and degradation, pesticides, and pathogens, many pollinator populations have been undergoing drastic declines in recent decades. READ MORE
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24. Reproductive physiology of the female three-spined stickleback, Gasterosteus aculeatus
Abstract : Reproduction in vertebrates, including fishes, is under control of the brain-pituitary-gonad (BPG) axis. The female three-spined stickleback, Gasterosteus aculeatus, produces egg clutches at intervals of a few days and spawns them in a nest built by male. READ MORE
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25. The brain-pituitary-gonadal axis of the three-spined stickleback, Gasterosteus aculeatus
Abstract : The seasonal reproduction of the three-spined stickleback is stimulated by long day photoperiod. As in other vertebrates, the reproductive system of stickleback is regulated by the brain-pituitary-gonadal (BPG) axis which is largely controlled by feedback effects. Both negative and positive feedback effects on the BPG axis have been found in fish. READ MORE