Sökning: "växtparasitologi"

Visar resultat 1 - 5 av 7 avhandlingar innehållade ordet växtparasitologi.

  1. 1. Food selection and fitness optimisation in insects

    Detta är en avhandling från Helene Bracht Jørgensen, Lund University, Dep. of Animal Ecology, Ekologihuset, Sölvegatan 37, S-223 62 Lund, Sweden

    Författare :Helene Bracht Jörgensen; [2002]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; food preference; nested PCR; fungal DNA; växtparasitologi; plant parasitology; Entomology; Entomologi; fungi; seeds; ground beetles; collembolans;

    Sammanfattning : To optimise fitness is a continuous process which assists species survival in changing environments. Choosing an optimal diet is an essential part of the optimisation process and a key element of optimal foraging theory. LÄS MER

  2. 2. Insect Diversity in Changing Landscapes

    Detta är en avhandling från Ekologiska institutionen, Lunds universitet

    Författare :Markus Franzén; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; växtparasitologi; Entomologi; plant parasitology; Zoology; Zoologi; Entomology; Ekologi; Ecology; butterfly; bee; dispersal; extinction; Djurekologi; Animal ecology;

    Sammanfattning : During recent decades, concern about the loss of biodiversity has increased. To change this negative trend there is an urgent need for effective conservation measures and there are ample evidence that conservation of organisms without an understanding of their ecology and behaviour is impossible. LÄS MER

  3. 3. Olfaction in Desert Locusts- Anatomy, Function and Plasticity of the Central Olfactory System

    Detta är en avhandling från Feromongruppen, Sölvegatan 37, 223 62 Lund, Sweden

    Författare :Rickard Ignell; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hist; serotonin; immunocytochemistry; juvenile hormone; development; olfactometer; intracellular recording; evolution; projection neuron; receptor neuron; antennal lobe; aggregation pheromone; neuroethology; olfaction; Desert locust; Schistocerca gregaria; Ecology; Ekologi; Entomology; plant parasitology; Entomologi; växtparasitologi; Environmental chemistry; Miljökemi;

    Sammanfattning : The anatomy, function and plasticity of the primary olfactory centre, the antennal lobe (AL), of the desert locust Schistocerca gregaria was investigated using a number of neuroanatomical and neurophysiological methods. Anatomical characterisation of the AL in a number of orthopteran species made it possible to deduce a model concerning the evolution of microglomeruli. LÄS MER

  4. 4. Getting to know Trioza apicalis (Homoptera: Psylloidea) – a Specialist Host-Alternating Insect with a Tiny Olfactory System

    Detta är en avhandling från Chemical Ecology and Ecotoxicology, Department of Biology, Lund University

    Författare :Lina Kristoffersen; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physiology of invertebrates; Djurs anatomi och morfologi; Entomologi; plant parasitology; Entomology; Ekologi; Ecology; glomeruli; antennal lobe; olfactory receptor neurons electrophysiology; antennae; behaviour; olfaction; Sternorrhyncha; psyllid; Ryggradslösa djurs fysiologi; animal morphology; Animal anatomy; växtparasitologi;

    Sammanfattning : This thesis comprises ecological, morphological and physiological studies of the carrot psyllid Trioza apicalis (Homoptera: Psylloidea) with particular focus on olfaction. Data from inventories of winter habitats suggest that T. apicalis prefer Picea abies over Pinus sylvestris and Juniperus communis as winter hosts. LÄS MER

  5. 5. Neural Interfaces to the Odour World of Scarab Beetles

    Detta är en avhandling från Chemical Ecology and Ecotoxicology, Department of Biology, Lund University

    Författare :Mattias Larsson; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Djurekologi; Animal ecology; Intra; Antennal lobe; CNS; Attraction; Olfactometer; Behaviour; Mass spectrometry; Gas chromatography; Electrophysiology; Single sensillum; Receptor neuron; Plant volatile; Sex pheromone; Neuroethology; Odour detection; Olfaction; Coleoptera; Scarabaeidae; Entomology; plant parasitology; Entomologi; växtparasitologi; Environmental chemistry; Miljökemi;

    Sammanfattning : Antennal detection and central nervous integration of behaviourally relevant odours in scarab beetles (Coleoptera: Scarabaeidae) was investigated, using the two Japanese scarabs Anomala cuprea and Phyllopertha diversa (Rutelinae), and the Central African fruit chafer Pachnoda marginata (Cetoniinae) as model species. Electrophysiological single cell recordings in A. LÄS MER