Search for dissertations about: "dragonflies"

Showing result 1 - 5 of 6 swedish dissertations containing the word dragonflies.

  2. 1. Micro- and macroevolutionary aspects of body size diversification and thermal adaptation in insects

    Author : John Waller; Evolutionär ekologi; []
    Keywords : Evolution; body size; Insects; dragonflies; damselflies; Odonata; Comparative methods; fossils;

    Abstract : Body size and body temperature are the two most important traits in biology. In this thesis I show how these twovariables have shaped the evolution of insects over the last 300 million years. READ MORE

  4. 2. The effects of exposure to microplastics and pollutants on the arthropod microbiome

    Author : Javier Edo Varg; Richard Svanbäck; Jarone Pinhassi; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; ecotoxicology; host microbiota; freshwater; anthropogenic pollution; microplastics; pesticides; pyrethroids; detergents; toxic metals; daphnids; chironomids; water boatmen; damselflies; dragonflies;

    Abstract : Anthropogenic pollution is widespread across various ecosystems. This disturbance can alter the interaction between a host and its associated microbiome, with repercussions for hosts traits such as health, behavior, and host evolution. READ MORE

  5. 3. The neural mechanisms of selective attention : Investigation of insect selective attention during visual object tracking using neurophysiology, neuroanatomy, computational modelling

    Author : Bo Bekkouche; Funktionell zoologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The brain simulates the world around us using sensory information and provides an estimation of reality in which actions can be executed. This estimation of reality is controlled by attention which decides which information is accepted, further processed and ignored. READ MORE

  6. 4. Neuropeptides Related to Tachykinins and Leucokinins in the Developing Nervous System of Insects

    Author : Kim Min Yung; Karoly Elekes; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; zoologi; Zoology;

    Abstract : In insects more than 300 neuropeptides have been identified and these have been implicated in a vast range of functional roles. These peptides have been grouped into families based on amino acid sequence similarities. READ MORE

  7. 5. Molecular phylogenetics and taxonomic issues in dragonfly systematics (Insecta: Odonata)

    Author : Rasmus Hovmöller; Thomas Pape; Mari Källersjö; Kjell Arne Johanson; Karl Kjer; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Systematics and phylogenetics; Systematik och fylogeni;

    Abstract : Dragonflies (Odonata) are one of the ancestral groups of extant insects. They represent one of the three most basal branches in the phylogeny of winged insects. The other two groups are the Ephemeroptera, mayflies, and Neoptera, the latter which covers the remaining winged insects. READ MORE