Search for dissertations about: "Vulpes vulpes"

Showing result 1 - 5 of 18 swedish dissertations containing the words Vulpes vulpes.

  2. 1. Population ecology of the red fox (Vulpes vulpes L.) in relation to food supply

    Author : Erik R. Lindström; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; red fox; Vulpes vulpes;

    Abstract : .... READ MORE

  4. 2. Cycles of voles, predators, and alternative prey in boreal Sweden

    Author : Birger Hörnfeldt; S. Erlinge; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; 3-4 year cycles; Clethrionomys glareolus; Clethrionomys rufocanus; Microtus agrestis; snap-trapping; rate of change; population regulation; delayed density-dependence; time-lag mechanism; seasonality; predation; food; predator avoidance; foraging behaviour; Aegolius funereus; nest boxes; numerical response; nomadism; Vulpes vulpes; Sarcoptes scabiei vulpes; Lepus timidus; Francisella tularensis; Tetraonidae; hunting statistics; zooekologi; Animal Ecology;

    Abstract : Bank voles, grey-sided voles, and field voles had synchronous 3-4 year density cycles with variable amplitudes which averaged about 200-fold in each species. Cycles of vole predators (red fox and Tengmalm's owl), and their (foxes') alternative prey (mountain hare and forest grouse) lagged behind the vole cycles. READ MORE

  5. 3. Population dynamics of the Swedish red fox, Vulpes vulpes (L.)

    Author : Jan Englund; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Rödräv;

    Abstract : .... READ MORE

  6. 4. Exploring Brain Gene Expression i Animal Models of Behaviour

    Author : Julia Lindberg; Elena Jazin; Peter Saetre; Jonathan Flint; Uppsala universitet; []
    Keywords : Biology; behavioural genetics; gene expression; brain; microarray analysis; domestication; animal model; haem; Canis familiaris; Vulpes vulpes; Mus musculus; Biologi;

    Abstract : The genetic basis for behavioural traits is largely unknown. The overall aim of this thesis was to find genes with importance for behavioural traits related to fear and anxiety. Microarray analysis was used to screen expression profiles of brain regions important for emotional behaviour in dogs, wolves, foxes and mice. READ MORE

  7. 5. Predator responses to non-stationary rodent cycles

    Author : Peter Hellström; Anders Angerbjörn; Xavier Lambin; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Buteo lagopus; Vulpes lagopus; Lemmus; Myodes; population cycles; predation; numerical response; functional response; arctic; lemmings; voles; fox; monitoring; raptors; zoologisk ekologi; Animal Ecology;

    Abstract : Regular fluctuations in population size, cycles, are common in small mammals and have important effects on predator populations and life histories. In this thesis, I identify long-term patterns and processes in two specialist predators, the arctic fox Vulpes lagopus and the rough-legged buzzard Buteo lagopus, in relation to their prey (lemmings and voles) and in the case of the arctic fox also to a dominant competitor, the red fox Vulpes vulpes. READ MORE