Sökning: "Nosema"

Visar resultat 1 - 5 av 7 uppsatser innehållade ordet Nosema.

  1. 1. The impact of managed honeybees and commercial reared bumblebees on pathogens in wild bees

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Sofie Tinggren; [2020]
    Nyckelord :honey bee; bumblebee; diseases; commercial bees; bee intensity;

    Sammanfattning : Bees are important beneficial insects due to their ability to pollinate our crops and vegetables, as well as being critically important for maintaining wild floral biodiversity. Bees are important from both an economic perspective and an environmental perspective, which highlights the importance of having healthy and sustainable bee populations. LÄS MER

  3. 2. Undersökning av Nosema hos bin : utbredning och förekomst i Sverige

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Philippe Simon; [2019]
    Nyckelord :Nosema; Bees; Sweden; molecular identification;

    Sammanfattning : This report investigates the presence of Nosema in Sweden. Nosema is an intracellular parasite within the order Microsporidia and is considered a global threat. The most recent academic study on the presence of Nosema in Sweden was published in 2013, however in that study no presence of Nosema in the north of Sweden was reported. LÄS MER

  4. 3. Screening Swedish bees for pahogens shines new light on the parasite Gregarine

    Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Institutionen för kvinnors och barns hälsa

    Författare :Nellie Svedin; [2017]
    Nyckelord :;

    Sammanfattning : are under pressure from habitat loss, environmental stress and pathogens including viruses. Research have shown viral infections to be one of the major causes of colony losses. The purpose of this study was to screen three viruses; Deformed wing virus, Slow bee paralysis virus and Acute bee paralysis virus but also three parasites; Nosema spp. LÄS MER

  5. 4. Neonicotinoids and honeybee health : the effect of the neonicotinoid clothianidin, applied as a seed dressing in Brassica napus, on pathogen and parasite prevalence and quantities in free-foraging adult honeybees (Apis mellifera)

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Julia Goss; [2014]
    Nyckelord :honeybees; pathogens; parasites; virus; Nosema; Varroa; neonicotinoids; clothianidin;

    Sammanfattning : Sub-lethal doses of neonicotinoids have been shown to negatively impact the health of honeybees. However, most studies to date have exposed bees only artificially to these pesticides under laboratory conditions. LÄS MER

  7. 5. När bina tystnar : Colony Collapse Disorder bakom honungsbiets (Apis mellifera) försvinnande

    Kandidat-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Erik Persson; [2014]
    Nyckelord :Honungsbi; Apis mellifera; bidöd; Colony Collapse Disorder;

    Sammanfattning : Under vintrarna 2006/2007 och 2007/2008 vittnade man i USA om storskaliga förluster avhonungsbin (Apis mellifera). Gemensamma symptom för dessa förluster var att arbetarbinförsvann från kolonierna fastän det fanns rikligt med mat och inga tecken på infektion av någonparasit. LÄS MER