Sökning: "parasitoid"
Visar resultat 6 - 10 av 15 avhandlingar innehållade ordet parasitoid.
6. Plant resistance ecology - the role of resistance in plant-insect mutualisms
Sammanfattning : Global food security is largely dependent on the use of synthetic pesticides for pest control. This extensive reliance on pesticides, however, has promoted widespread loss of insect diversity; thereby jeopardizing the provision of insect ecosystem services like pollination and biological control. LÄS MER
7. Biological control strategies against the cabbage root fly Delia radicum : effect of predators, parasitoids and pathogens
Sammanfattning : Contemporary intensified agroecosystems are contributing to a reduction in natural enemy (NE) populations. In conservation biological control (CBC), NEs are favoured by providing supporting resources. CBC could be complemented with inoculation biological control (IBC) to enhance the effect of NEs. LÄS MER
8. Love (eating) thy neighbour? Understanding and predicting food-web structure and dynamics
Sammanfattning : Food webs are networks of feeding interactions that provide the backbone of ecological communities. The structure - who eats whom - and dynamics - how population abundances fluctuate as a result - of food webs depend on the traits of the species present. LÄS MER
9. Trophic, Indirect, and Evolutionary Interactions in a Plant–Herbivore–Parasitoid System
Sammanfattning : 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. LÄS MER
10. Dynamics of the aphid-ant mutualism
Sammanfattning : An appreciation of the role of mutualism is essential when studying ecology and evolution in most ecosystems. Information covering aspects of mutualistic interactions can serve as a complement to the somewhat one-sided perspective from the 1950’s and 60’s that is used when teaching biology. LÄS MER