Search for dissertations about: "speciation"

Showing result 1 - 5 of 252 swedish dissertations containing the word speciation.

  1. 1. Speciation genomics A perspective from vertebrate systems

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Nagarjun Vijay; Jochen. B.W Wolf; C. Alex Buerkle; [2016]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; evolution; speciation; genomics; vertebrate; adaptation; selection; linked selection; crow; killer whale; hybrid zone; transcriptomics; population genetics; behaviour; colouration; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Abstract : Species are vital entities in biology. Species are generally considered to be discrete entities, consisting of a group of (usually interbreeding) individuals that are similar in phenotype and genetic composition, yet differ in significant ways from other species. READ MORE

  2. 2. Avian speciation : investigations of chromosomes and proteins in relation to speciation in birds

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Hans Ryttman; [1981]

    Abstract : .... READ MORE

  3. 3. Speciation and Metabolic rate Insights from an avian hybrid zone

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : S. Eryn McFarlane; Anna Qvarnström; Jenny Boughman; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; resting metabolic rate; life history; hybridization; speciation; reproductive isolation; Ficedula flycatcher; Biologi med inriktning mot zooekologi; Biology with specialization in Animal Ecology;

    Abstract : The role of divergent climate adaptation in speciation has received surprisingly little scientific attention. My dissertation research focused on how resting metabolic rate (RMR) relates to the build up of prezygotic and postzygotic isolation in a natural Ficedula flycatcher hybrid zone. READ MORE

  4. 4. Evolution of the Biodiversity Hotspot of Madagascar from the Eye of Diving Beetles Phylogeny, colonization and speciation

    University dissertation from Stockholm : Department of Zoology, Stockholm University

    Author : Rasa Bukontaite; Johannes Bergsten; Ingi Agnarsson; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Dytiscidae; diving beetles; Biogeography; Phylogeny; Dating; phylogenetic informativeness; colonization; speciation; microendemism; Madagascar; Systematic Zoology; systematisk zoologi;

    Abstract : Dytiscidae, contains numerous endemic and non-endemic species on Madagascar. Their evolutionary history is largely unknown on the island. Herein, I use analyses to infer phylogenetic relationship among groups of diving beetles, with a focus on the subfamily Dytiscinae and endemic species in two other groups of Dytiscidae. READ MORE

  5. 5. Sexual Signals and Speciation A Study of the Pied and Collared Flycatcher

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Jon Haavie; Uppsala universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biology; Speciation; Sexual signals; Hybridization; Reinforcement; Song; Female preference; Sex-linkage; Biologi; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi;

    Abstract : Speciation is the process in which reproductive barriers evolve between populations. In this thesis I examine how sexual signals contribute to the maintenance, reinforcement or breakdown of reproductive barriers.Male pied flycatchers (Ficedula hypoleuca) and collared flycatchers (F. albicollis) differ in song and plumage traits. READ MORE