Vertical Food Web Interactions

A Plant-Insect Relationships: Life-History and Evolution of Tephritid Flies.- 1 The Sympatric Origin of Phytophagous Insects.- 2 Host Race Formation in Tephritis conura: Determinants from Three Trophic Levels.- 3 Symphagy Among Florivorous Fruit Flies (Diptera: Tephritidae) in Southern California.- 4 Establishment of Urophora cardui (Diptera: Tephritidae) on Canada Thistle, Cirsium arvense (Asteraceae), and Colony Development in Relation to Habitat and Parasitoids in Canada.- B Host-Parasite Interactions.- 5 Host Relationships at Reversed Generation Times: Margaritifera (Bivalvia) and Salmonids.- 6 The Community Structure of Ticks on Kudu, Tragelaphus strepsiceros, in the Eastern Cape Province of South Africa.- 7 The Epidemiology of Parasitic Diseases in Daphnia.- C Aspects of Chemical Ecology in Different Food Chains.- 8 Inter- and Intraspecific Transfer of Toxic Insect Compound Cantharidin.- 9 Survival in a Hostile Environment. Evaluation of the Developmental Success of the Oligophagous Leaf Beetle Chrysomela vigintipunctata (Scop).- 10 Ecdysteroids in Pycnogonids: Hormones and Interspecific Allelochemicals.- D Phytophages and Their Enemies: Interactions Between Aphids and Their Predators and Parasitoids.- 11 Growth and Development in Parasitoid Wasps: Adaptation to Variable Host Resources.- 12 Patch Quality and Fitness in Predatory Ladybirds.- 13 Interactions Between Ants and Aphid Parasitoids: Patterns and Consequences for Resource Utilization.- 14 The Relative Importance of Host Plants, Natural Enemies and Ants in the Evolution of Life-History Characters in Aphids.- E Community Organization and Diversity in Multitrophic Terrestrial Systems.- 15 Diversities of Aphidopha in Relationship to Local Dynamics of Some Host Alternating Aphid Species.- 16 Organization Patterns in a Tritrophic Plant-Insect System: Hemipteran Communities in Hedges and Forest Margins.- 17 Biodiversity in Three Trophic Levels of the Vineyard Agro-Ecosystem in Northern Switzerland.- 18