Search for dissertations about: "Diptera"
Showing result 1 - 5 of 26 swedish dissertations containing the word Diptera.
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1. Ultrastructural and systematic studies of cecidomyiidae (Diptera)
Abstract : Examination of the abdomen of the adult female and the head capsule of the mature larva indicates the grat utility of the Scanning Electron Microscope (SEM) in examining structures when searching for useful characters to deal with the taxonomy and phylogeny of gall midges (Diptera: Cecidomyiidae). Some of the structures found represent adaptations of limited value for phylogenetic considerations at higher levels. READ MORE
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2. Taxonomical and biological studies of Tephritis species (Diptera) and their parasitoids (Hymenoptera)
Abstract : .... READ MORE
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3. The Evolution of Sexually Homologous Ornaments : Selection via Male Mate Choice Coinciding with Male-Male Competition in a Neotropical Mosquito
Abstract : The evolution of elaborate male ornaments via sexual selection is well-understood while the selective pressures acting on female ornaments remains unresolved. Female ornaments in species with strong sexual selection on the male homologue of the ornament were originally thought to result from an intersexual genetic correlation. READ MORE
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4. Molecules and morphology in Empidoidea (Diptera) : Phylogenetic analysis and taxonomical implications
Abstract : The classification and evolutionary history of the superfamily Empidoidea (Diptera) have been far from straightforward subjects. Morphology based phylogenies of the superfamily have been unable to answer many questions raised by both systematists and biogeographers, as well as ecologists and ethologists, partly due to morphological modifications and adaptations difficult to interpret. READ MORE
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5. Suspension-feeding of mosquito larvae (Diptera: Culicinae) : morphological, behavioural and hydrodynamic aspects
Abstract : .... READ MORE