Sökning: "Nosema"
Visar resultat 1 - 5 av 7 uppsatser innehållade ordet Nosema.
1. The impact of managed honeybees and commercial reared bumblebees on pathogens in wild bees
Master-uppsats, SLU/Dept. of EcologySammanfattning : 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
2. Undersökning av Nosema hos bin : utbredning och förekomst i Sverige
Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : 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
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 hälsaSammanfattning : 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
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 EcologySammanfattning : 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
5. När bina tystnar : Colony Collapse Disorder bakom honungsbiets (Apis mellifera) försvinnande
Kandidat-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildningSammanfattning : 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