Search for dissertations about: "lizard"

Showing result 1 - 5 of 12 swedish dissertations containing the word lizard.

  2. 1. Island biogeography and population divergence in the Skyros wall lizard

    Author : Anna Runemark; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Podarcis gaigeae; inbreeding; predation release; polymorphism; island gigantism; the island rule; genetic drift; sexual selection; natural selection; island biology; Evolution;

    Abstract : Islands are cradles for new biodiversity and provide natural laboratories for the study of population divergence. In my thesis, I investigated the role of different evolutionary processes in the population divergence in the Skyros wall lizard (Podarcis gaigeae), a species where islet populations have strongly diverged morphologies. READ MORE

  4. 2. Development of central catecholaminergic neuronal systems in the lizard Anolis sagrei

    Author : Agneta Rehn; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; double labelling; immunohistochemistry; interplexiform cells; amacrine cells; catecholamines; development; retina; Reptiles; brain; Zoology; Zoologi;

    Abstract : Catecholamines, comprising the neurotransmitters dopamine (DA), noradrenaline (NA) and adrenaline (A) are synthesized by specific enzymes (tyrosine hydroxylase (TH), dopamine ß-hydroxylase (DBH), phenylethanolamine-N-methyltransferase (PNMT)) in the central nervous system. The development and distribution of different catecholaminergic systems have been described in both the brain and retina of the lizard Anolis sagrei. READ MORE

  5. 3. Sexual selection and reproductive strategies in the sand lizard, Lacerta agilis

    Author : Mats Olsson; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : .... READ MORE

  6. 4. Genetic diversity in disjunct Swedish populations of the sand lizard (Lacerta agilis)

    Author : Annica Gullberg; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; Ödlor; Lacertilia; Bryggödlor; Rhynchocephalia; Genetik;

    Abstract : .... READ MORE

  7. 5. Population Dynamics and Conservation of the Sand Lizard (Lacerta agilis) on the Edge of its Range

    Author : Sven-Åke Berglind; Pekka Pamilo; Per Sjögren-Gulve; Coulson Tim; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Ecology; demography; extinction; habitat; Lacerta agilis; management; metapopulation; peripheral populations; population dynamics; population viability analysis; reintroduction; reptiles; umbrella species; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

    Abstract : The sand lizard (Lacerta agilis) reaches the northern periphery of its distribution in south-central Sweden, where small, isolated relict populations occur in pine heath forests on sandy sediments. Modern forestry and fire suppression have reduced the amount of suitable open habitat for the species in this area and seem to be important for its decline. READ MORE