Sökning: "oviposition"
Visar resultat 16 - 20 av 39 avhandlingar innehållade ordet oviposition.
16. Cryptic Female Choice and Male Mating Behaviour : Sexual Interactions in Beetles
Sammanfattning : The importance of cryptic female choice, i.e. female post-copulatory influence over male reproductive success, in driving the evolution of male traits remains controversial. The main aim of this thesis was to understand the post-copulatory consequences of sexual interactions and the importance of cryptic female choice in two species of beetle. LÄS MER
17. Stress responses of Arabidopsis plants with a varying level of non-photochemical quenching
Sammanfattning : When light energy input exceeds the capacity for photosynthesis the plant need to dissipate the excess energy and this is done through non-photo-chemical quenching (NPQ). Photochemical quenching (photosynthesis), NPQ and fluorescence are three alternative faiths of excited chlorophylls. PsbS associates to photosystem II and is involved in NPQ. LÄS MER
18. Modulation of olfactory information in the antennal lobe of Spodoptera littoralis
Sammanfattning : In order to respond appropriately to external stimuli, e.g. odours in the environment,insects have to evaluate these stimuli in a context of relevance and need. These decisions are, in turn, based on internal physiological status, such as mating status. LÄS MER
19. Gall midge olfaction and its role in speciation
Sammanfattning : With the swede midge (Contarinia nasturtii) as our main model species, we study two types of olfactory cues that are of importance for gall midges: 1) the pheromones emitted by the female to attract the male; 2) and the host plant volatiles that the females use when finding a host for oviposition. We found that both the blend of compounds and the enantioisomeric form are important for male attraction in the wind tunnel and in the field. LÄS MER
20. Out of and into Africa: Odour-mediated interaction and detection of the human commensal Drosophila melanogaster and the invasive fly Drosophila suzukii
Sammanfattning : Living organisms use their sense of smell to discriminate odours. Humans can sense females of the cosmopolitan Drosophila melanogaster, but whether humans can discriminate the cosmopolitan D. melanogaster strain from the conspecific Zimbabwe strain, was unknown. LÄS MER
