Search for dissertations about: "Asecodes"
Found 4 swedish dissertations containing the word Asecodes.
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1. Ecology and evolution in a host-parasitoid system : Host search, immune responses and parasitoid virulence
Abstract : In host-parasitoid systems, there is a continuous coevolutionary arms race where each species imposes a strong selection pressure on the other. The host needs to develop defence strategies in order to escape parasitism and the parasitoid must evolve counter-defence strategies in order to overcome the host’s immune defence and successfully reproduce. READ MORE
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2. Coevolution and molecular background of species interactions in geographic mosaics
Abstract : In complex food webs, species often interact with each other indirectly through mediating species. As a result of geographic mosaic of coevolution, such interactions are often evolutionarily unstable and the traits governing the interaction sometimes vary over time. READ MORE
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3. Searching for food in complex environments : Integrating processes at multiple spatial scales
Abstract : Resources are often unevenly distributed through the environment, resulting in a challenging task for insects to locate food, mates and oviposition sites. Consequently, there is an ongoing need to unravel how insects rely on behavioural and sensory traits while searching for resources in heterogeneous environments. READ MORE
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4. Trophic, Indirect, and Evolutionary Interactions in a Plant–Herbivore–Parasitoid System
Abstract : The aim of this thesis project was to elucidate patterns and processes associated with the biotic interactions in a natural plant–herbivore–parasitoid food web characterized by spatial and temporal heterogeneity with regard to species composition. The system examined is based on island populations of the perennial herb Meadowsweet (Filipendula ulmaria, Rosaceae), located in the Skeppsvik Archipelago. READ MORE