Search for dissertations about: "Mats Grahn"

Showing result 1 - 5 of 12 swedish dissertations containing the words Mats Grahn.

  2. 1. Immunoecology of the Great Snipe (Gallinago media) : Mate Choice, MHC Variation, and Humoral Immunocompetence in a Lekking Bird

    Author : Robert Ekblom; Jacob Höglund; Mats Grahn; Scott V. Edwards; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; Behaviour; Major histocompatibility complex class II B; Sexual selection; Evolution; Leks; Biologi; Biology; Biologi;

    Abstract : At the centre of the vertebrate immune system is a group of proteins called MHC (major histocompatibility complex) molecules. These function in self – non self recognition and activation of the immune defence against intruding parasites and pathogens. READ MORE

  4. 2. Genetic Aspects of Sexual Selection and Mate Choice in Salmonids

    Author : Lars Forsberg; Mats Grahn; Jacob Höglund; Claus Wedekind; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; mate choice; Mhc; Major histocompatibility complex; class IIB; disassortative; assortative; microsatellite; outbreeding; supportive breeding; population; population genetics; Biologi; Biology; Biologi;

    Abstract : The long-term genetic consequences of supportive breeding programs are not well understood. Nevertheless, stocking populations with hatchery-produced fish to compensate for losses of natural production are common practice, for example after constructions of hydroelectric power dams. READ MORE

  5. 3. Coping with environmental stress : from the individual and population perspective

    Author : Johanna Gardeström; Michael Tedengren; Tina Elfwing; Mats Grahn; Gary Carvalho; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Environmental stress; Genetic diversity; Multi-level approach; Invertebrates; Marine ecology; Marin ekologi; Systems Ecology; systemekologi;

    Abstract : Natural stress and disturbances are important factors affecting the structure and function of ecosystems. However the magnitude of stress has escalated due to anthropogenic activities. Environmental monitoring and toxicity assessments try to protect ecosystems from unwanted human alterations. READ MORE

  6. 4. Sex and symbionts : New discoveries in local and regional patterns of coral ecology and reproduction

    Author : Micaela Hellström; Michael Tedengren; Mats Grahn; John A. H. Benzie; Nancy Knowlton; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Indo-Pacific; S. elegans; G. fascicularis; Symbiodinium; size; reproduction; allozymes; ITS2; mtDNA; geography; environment; Marine ecology; Marin ekologi; marin ekotoxikologi; Marine Ecotoxicology;

    Abstract : Coral reefs belong to the most diverse and the most threatened ecosystems on earth. Anthropogenic stressors and climate change have led to mortalities at levels unprecedented in modern times. The aims of this thesis are to investigate aspects of the corals’ ability to reproduce, disperse, adapt and survive. READ MORE

  7. 5. Genetic connectivity of fish in the Western Indian Ocean

    Author : Oskar Henriksson; Mats Grahn; Anders Angebjörn; Filip Volckaert; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; population genetics; indian ocean; siganus sutor; valamugil buchanani; scarus ghobban; connectivity; aflp; mtDNA; d-loop; CO1; zoologisk ekologi; Animal Ecology;

    Abstract : An almost unbroken fringing reef runs along the east coast of Africa, the lagoon inside the reef is the foundation of almost all artisanal fisheries. It is a low-tech fishery conducted by many people. Some areas can have up to 19 fishermen per square kilometer. READ MORE