Sökning: "antipredationsbeteende"

Hittade 4 uppsatser innehållade ordet antipredationsbeteende.

  1. 1. Risky places and risky times : vegetation cover and carnivore olfactory cues influence patch selection and antipredator behavior of African ungulates

    Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Noé Müller-Rowold; [2017]
    Nyckelord :predation risk; African ungulates; savanna; visibility; scats; Hluhluwe-iMfolozi; patch selection; large carnivore; hunting modes; vigilance; group size;

    Sammanfattning : Foraging behaviour and vigilance of African ungulates are considered to be influenced by their perception of predation risk. In this experiment, I tried to obtain a better understanding of the relative importance of spatial and temporal drivers of perceived predation risk for African ungulates of various sizes. LÄS MER

  3. 2. Effekter av yttäckande is kontra ljusinsläpp på öringens (Salmo trutta) antipredationsbeteende under vinter

    Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Emelie Haraldsson; [2015]
    Nyckelord :brown trout; winter; ice cover; instream light; predation risk; öring; vinter; yttäckande is; ljusinläpp; predationsrisk;

    Sammanfattning : Previous studies have shown that ice cover has many positive effects on brown trout (Salmo trutta), including protection from endothermic predators. I tested whether it is the cover provided by the ice itself or the reduction in light that causes behavioral changes in juvenile brown trout. LÄS MER

  4. 3. Foraging and anti-predation behavior of Thomson’s gazelles (Gazella thomsoni) and Grant’s gazelles (Gazella granti) at a waterhole

    Kandidat-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Heidi Rautiainen; [2014]
    Nyckelord :betesbeteende; antipredationsbeteende; thomson s gasell; grant s gasell; gasell; foraging behavior; anti-predation behavior; gazelle;

    Sammanfattning : Prey species make behavioral decisions to reduce the perceived risk of predation and the time spent vulnerable to predation. Behavioral responses to predators are for example selection of specific habitat types and the presence of predators influence individual vigilance. LÄS MER

  5. 4. Stress hos tamdjur orsakad av rovdjur

    Kandidat-uppsats, SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Författare :Maja Månsby; [2013]
    Nyckelord :stress; tamdjur; rovdjur; glukokortikoider; rovdjursangrepp; kortisol;

    Sammanfattning : Det finns fem fredade rovdjur i Sverige: björn, varg, lo, järv och kungsörn. Riksdagen har beslutat att det ska finnas livskraftiga populationer av dessa djur i landet och rovdjursstammarna har ökat den senaste tiden. En viktig orsak till konflikt mellan människor och de stora rovdjuren är rovdjurens predation på våra tamdjur. LÄS MER