Search for dissertations about: "animal behaviour"

Showing result 21 - 25 of 190 swedish dissertations containing the words animal behaviour.

  2. 21. Round goby invasion of the Baltic Sea : the role of phenotypic variation

    Author : Magnus Thorlacius; Tomas Brodin; Göran Englund; Jost Borcherding; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Round goby Neogobius melanostomus ; behaviour; animal personality; dispersal; species invasions; colonisation; spread; sociability; activity; boldness; aggression; cortisol coping-styles; biology; biologi;

    Abstract : Biological invasions are a major threat to biodiversity world wide with annual economic costs up to 1.4 trillion dollars. The round goby (Neogobius melanostomus) is a particularly fierce invader that threatens ecological function of the Baltic Sea. READ MORE

  4. 22. Pigs for organic production : studies of sow behaviour, piglet-production and GxE interactions for performance

    Author : Anna Wallenbeck; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : .... READ MORE

  5. 23. Ley crop silage in diets to fattening pigs : How does it affect pig performance, nitrogen utilization, health and behaviour?

    Author : Johanna Friman; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : There is an increasing interest to use silage as a feed ingredient to pigs. The aim of this thesis was to study the effect of using silage in the diet to fattening pigs and how feeding strategy influenced pig performance, behaviour, gut health and nitrogen utilization. Two studies were performed. READ MORE

  6. 24. Behaviour under predation risk in birds

    Author : Cecilia Kullberg; Neil B Metcalfe; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Animal physiology; Zoofysiologi;

    Abstract : Predation is a major selective force in the evolution of both morphological and behavioural characters in animals. The flexibility in behavioural traits according to perceived predation risk has received much attention in recent years. READ MORE

  7. 25. Visually guided swimming in box jellyfish: A study of swimming behaviour in response to visual stimuli

    Author : Ronald Petie; Funktionell zoologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Vision; steering; swimming; behaviour; box jellyfish; Cubozoa; Tripedalia cystophora; biomechanics;

    Abstract : Most animals use eyes to guide their behaviour. Analysing, and understanding, visually guided behaviours gets more complicated the more advanced the animal gets. Box jellyfish provide a relatively simple system for understanding visually guided behaviours. READ MORE