Search for dissertations about: "parasitoid"

Showing result 11 - 15 of 15 swedish dissertations containing the word parasitoid.

2. 11. Local and landscape-level impacts of agricultural intensification on arthropod communities and their interaction networks

   Author : Guillermo Aguilera Nuñez; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
   Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

   Abstract : Arthropods play a central role in agricultural landscapes being responsible for the delivery of many ecosystem services such as pollination, biological pest control, and nutrient cycling. But the current global decline of arthropods is intensified by habitat modification, loss and fragmentation, pesticide use and other intensive management practices. READ MORE

4. 12. Hidden Creatures – systematics of the Euphorinae (Hymenoptera)

   Author : Julia Stigenberg; Fredrik Ronquist; Johannes Bergsten; Andrew Austin; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Parasitic wasps; Braconidae; Euphorinae; systematics; phylogeny; molecular taxonomy; cryptic species; evolution; host preferences; identification keys; Systematic Zoology; zoologisk systematik och evolutionsforskning;

   Abstract : Parasitic wasps constitute one of the last remaining frontiers in the charting of animal diversity. The Braconidae is the second most species-rich family of parasitic wasps; the world fauna has been estimated at 40 000 species and the Swedish fauna is believed to include a little more than 2 000 species, 1 200 of which are currently documented. READ MORE

5. 13. Activation of the Cellular Immune Response in Drosophila melanogaster Larvae

   Author : Ines Anderl; Dan Hultmark; Paul Badenhorst; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Drosophila melanogaster; immunity; blood cells; hematopoiesis; flow cytometry; in vivo imaging; genetic screens; Tl10b; fat body; Toll signaling; molekylärbiologi; Molecular Biology;

   Abstract : During the last 40 years, Drosophila melanogaster has become an invaluable tool in understanding innate immunity. The innate immune system of Drosophila consists of a humoral and a cellular component. While many details are known about the humoral immune system, our knowledge about the cellular immune system is comparatively small. READ MORE

6. 14. Searching for food in complex environments : Integrating processes at multiple spatial scales

   Author : Thomas Alexander Verschut; Peter Hambäck; Peter Anderson; Ring Cardé; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Associational effects; Natal experiences; Olfaction; Oviposition; Plant Ecology; växtekologi;

   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

7. 15. Natural enemies: Functional aspects of local management in agricultural landscapes

   Author : Helena Hanson; Biodiversitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Agricultural intensification; sustainable agriculture; land use; management intensity; landscape scale; ecosystem services; biological control; species trait; pesticides; predatory arthropods; parasitoids; pollen beetles;

   Abstract : Agricultural intensification has raised the global food production but also caused major concerns about environmental and health effects, including contamination by pesticides. Pesticide applications may induce toxicity not only on the target pest species but especially on non-target species. READ MORE