Search for dissertations about: "Domestication"

Showing result 1 - 5 of 73 swedish dissertations containing the word Domestication.

  2. 1. Chicken domestication : Effects of tameness on brain gene expression and DNA methylation

    Author : Johan Bélteky; Per Jensen; Anna Kukekova; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Domestication greatly increases phenotypic variation in a short time span, with selection for a single phenotype and a plethora of associated phenotypic changes as an outcome of the process. The domestication process influences the underlying genomic architecture of a species, and the success and speed of the process is likely influenced by it. READ MORE

  4. 2. Early domestication? : Phenotypic alterations of Red Junglefowl selected for divergent fear of humans

    Author : Beatrix Agnvall; Per Jensen; Hannah Rowland; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Domestication is the process through which animals adapt to conditions provided by humans. The domesticated phenotype differs from wild ancestors in a number of traits relating to physiology, morphology and behaviour. READ MORE

  5. 3. The Physiology of Chicken Domestication : Involvement of the HPA-axis and the Autonomic Nervous System

    Author : Magnus Elfwing; Jordi Altimiras; Michael Axelsson; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Domestication; chickens; HPA-axis; autonomic nervous system; heart rate; allometry;

    Abstract : Domesticering är en urvalsprocess för önskvärda egenskaper hos djur som över tid förändrar deras utseende, beteende och genetik. Några exempel av djur som genomgått denna riktade avel är vargen, mufflon, uroxen, vildsvinet och den röda djungelhönan som vi idag känner som hunden, fåret, kon, grisen och slaktkycklingen. READ MORE

  6. 4. Domestication effects on foraging behaviour : consequences for adaptability in chickens

    Author : Christina Lindqvist; Per Jensen; Björn Forkman; Linköpings universitet; []
    Keywords : HUMANIORA; HUMANITIES; Etologi; chicken; domestication effects; behaviour; red jungle fowl RJF ; contrafreeloading CFL ; egg production; Ethnology; Etnologi;

    Abstract : The main aim of this thesis was to study domestication effects on foraging behaviour in chickens and to investigate whether and how domestication and selection for high production have influenced adaptability in chickens. Two domestic strains of chickens (egg layers and meat type chickens) and their wild ancestor, the red jungle fowl (RJF) were compared in different test situations with respect to foraging behaviour and adaptability. READ MORE

  7. 5. From wolf to dog: Behavioural evolution during domestication

    Author : Christina Hansen Wheat; Hans Temrin; Clive Wynne; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Domestication syndrome; behavioural evolution; behaviorual ontogeny; correlated traits; sociability; playfulness; aggression; fear; Canis familiaris; Canis lupus; artificial selection; etologi; Ethology;

    Abstract : Biologists since Darwin have recognized that domestication, where species are selected to live in human-controlled environments, exerts strong selection on organisms and dramatically impacts their evolutionary trajectories. Across domesticated mammal species, characteristic morphological, physiological and behavioural changes occur simultaneously, as correlated traits, a phenomenon known as the domestication syndrome. READ MORE