Search for dissertations about: "ostriches"

Found 3 swedish dissertations containing the word ostriches.

  2. 1. Cooperation and conflict over the struggle to reproduce in harsh environments : An experimental field study on ostriches

    Author : Julian Melgar; MEMEG; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; social; grupp; konkurrens; konflikt; fusk; värme; stress; tolerans; complexitet; variation; social; group; competition; conflict; cheating; heat; stress; tolerance; complexity; variation;

    Abstract : People are used to hearing that evolution is about the survival of the fittest. Theyimagine a world full of bullies that ruthlessly fight their way to the top in the struggle for life, leaving the weak behind. But this doesn’t need be the case. READ MORE

  4. 2. Evolutionary genomics of host-microbe interactions

    Author : Elin Videvall; MEMEG; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; host; microbiota; avian malaria; ostrich; parasite; dual RNA-seq;

    Abstract : The microbes living inside hosts have highly important consequences for host health and fitness. From the host’s perspective, some microbes exhibit mutualistic tendencies, others parasitic, and some commensal, but this is context-dependent and opportunistic lifestyles are widespread in nature. READ MORE

  5. 3. The evolution of sex chromosomes and sex-linked sequences in birds

    Author : Homa Papoli Yazdi; Hans Professor; Bengt Hansson; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; sex chromosomes; female heterogamety; recombination suppression; genetic map; inversions; genetic diversity; pseudoautosomal region; Biology with specialization in Evolutionary Genetics; Biologi med inriktning mot evolutionär genetik;

    Abstract : Identifying the processes involved in the evolution of suppressed recombination between sex chromosomes and understanding their consequences for the evolutionary dynamics of sex-linked loci have been major topics of research during the last century. In this thesis, I used the avian ZW system, where females are the heterogametic sex, to investigate the underlying processes in sex chromosome evolution in birds. READ MORE